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Characterization and photoelectrochemical performance of Zn-doped TiO_2 films by sol-gel method 认领 引用 被引量：14
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作者 Li-ying QIAO Feng-yu XIE +3 位作者 Ming-hui XIE Cai-hua GONG Wei-lang WANG Jia-cheng GAO 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第8期2109-2116,共8页
Zn-doped TiO2 (Zn?TiO2) thin films were prepared by the sol?gel method on titanium substrates with heat treatment at different temperatures. The effects of heat treatment temperatures and Zn doping on the structure, p... Zn-doped TiO2 (Zn?TiO2) thin films were prepared by the sol?gel method on titanium substrates with heat treatment at different temperatures. The effects of heat treatment temperatures and Zn doping on the structure, photocathodic protection and photoelectrochemical properties of TiO2 thin films were investigated. It is indicated that the photoelectrical performance of the Zn?TiO2 films is enhanced with the addition of Zn element compared with the pure-TiO2 film and the largest decline by 897 mV in the electrode potential is achieved under 300 °C heat treatment. SEM?EDS analyses show that Zn element is unevenly distributed in Zn?TiO2 films; XRD patterns reveal that the grain size of Zn?TiO2 is smaller than that of pure-TiO2; FTIR results indicate that Zn - O bond forms on Zn?TiO2 surface. Ultraviolet visible absorption spectra prove that Zn?TiO2 shifts to visible light region.Mott?Shottky curves show that the flat-band potential of Zn?TiO2 is more negative and charge carrier density is bigger than that ofpure-TiO2, implying that under the synergy of the width of the space-charge layer, carrier density and flat-band potential, Zn?TiO2 with 300 °C heat treatment displays the best photocathodic protection performance. 展开更多
关键词 TiO2 films Zn-doping photocathodic protection photoelectrochemical activity sol.gel method
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Influences of working pressure on properties for TiO_2 films deposited by DC pulse magnetron sputtering 认领 引用 被引量：11
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作者 ZHANG Can DING Wanyu +2 位作者 WANG Hualin CHAI Weiping JU Dongying 《Journal of Environmental Sciences》 SCIE EI CAS 2009年第6期741-744,共4页
TiO2 films were deposited at room temperature by DC pulse magnetron sputtering system.The crystalline structures,morphological features and photocatalytic activity of TiO2 films were systematically investigated by X-r... TiO2 films were deposited at room temperature by DC pulse magnetron sputtering system.The crystalline structures,morphological features and photocatalytic activity of TiO2 films were systematically investigated by X-ray diffraction（XRD）,atomic force microscopy（AFM） and ultraviolet spectrophotometer,respectively.The results indicated that working pressure was the key deposition parameter in？uencing the TiO2 film phase composition at room temperature,which directly affected its photocatalytic activity.With increasing working pressure,the target self-bias decreases monotonously.Therefore,low temperature TiO2 phase（anatase） could be deposited with high working pressure.The anatase TiO2 films deposited with 1.4 Pa working pressure displayed the highest photocatalytic activity by the decomposition of Methyl Orange solution,which the degradation rate reached the maximum（35%） after irradiation by ultraviolet light for 1 h. 展开更多
关键词 TiO2 film anatase UV induced photocatalysis DC pulse magnetron sputtering
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Properties of TiO_2 Thin Films Prepared by Magnetron Sputtering 认领 引用 被引量：9
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作者 WenjieZHANG YingLI 《Journal of Materials Science & Technology》 SCIE EI CAS 2002年第2期101-107,共7页
With rapid progressive application of TiO2 thin films, magnetron sputtering becomes a very interesting method to prepare such multi-functional thin films. This paper focuses on influences of various deposition process... With rapid progressive application of TiO2 thin films, magnetron sputtering becomes a very interesting method to prepare such multi-functional thin films. This paper focuses on influences of various deposition processes and deposition rate on the structures and properties of TiO2 thin films. Anatase, rutile or amorphous TiO2 films with various crystalline structures and different photocatalytic, optical and electrical properties can be produced by varying sputtering gases, substrate temperature, annealing process, deposition rate and the characteristics of magnetron sputtering. This may in turn affect the functions of TiO2 films in many applications. Furthermore, TiO2-based composites films can overcome many limitations and improve the properties of TiO2 films. 展开更多
关键词 TiO2 thin film magnetron sputtering deposition process composite film.
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Degradation of Pollutant and Antibacterial Activity of Waterborne Polyurethane/Doped TiO_2 Nanoparticle Hybrid Films 认领 引用 被引量：2
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作者 邱珊 DENG Fengxia +3 位作者 XU Shanwen LIU Peng MIN Xinmin 马放 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2015年第3期447-451,共5页
The waterborne polyurethane/doped Ti O2 nanoparticle hybrid films were prepared. Nd, I doped Ti O2 was prepared with a 50 nm particle size firstly. The hybrid film was prepared by mixing doped Ti O2 with waterborne po... The waterborne polyurethane/doped Ti O2 nanoparticle hybrid films were prepared. Nd, I doped Ti O2 was prepared with a 50 nm particle size firstly. The hybrid film was prepared by mixing doped Ti O2 with waterborne polyurethane, followed by heat treatment. The presence and nanometric distribution of doped Ti O2 nanoparticles in prepared membranes is evident according to SEM images. The photocatalytic activities of doped Ti O2 were signifi cantly enhanced compared with pure Ti O2 powders. After the hybrid fi lm fabrication, the photocatalytic activities were almost the same as the pure catalysts with kMB of 0.046. In the antibacterial testing, the hybrid fi lms can inhibit E. coli growth. A signifi cant decrease in membrane fl uidity and increase of permeability of E. coli were observed. 展开更多
关键词 doped TiO2 polyurethane hybrid film photocatalytic activity antibacterial
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Structural and optical properties of nano-spin coated sol-gel porous TiO_2 films 认领 引用 被引量：3
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作者 M.M.El-NAHASS M.H.ALI A.El-DENGLAWEY 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第12期3003-3011,共9页
Three thicknesses of TiO2 films, 174, 195, and 229 nm, were deposited onto quartz substrates by sol–gel spin coating method. The as-deposited thin films were characterized by nano-crystallite with different sizes (19... Three thicknesses of TiO2 films, 174, 195, and 229 nm, were deposited onto quartz substrates by sol–gel spin coating method. The as-deposited thin films were characterized by nano-crystallite with different sizes (19–46 nm) and relatively high porous structure. Optical constants were determined and showed the lowest refractive index of 1.66 for the as-prepared films that ever reported till now. Obtained results were discussed through current theoretical ideas. 展开更多
关键词 TiO2 films optical properties nanostructure electron microscopy thin films spin coating technique
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Preparation,structure and ferromagnetic properties of the nanocrystalline Ti1-xMn_xO_2 thin films grown by radio frequency magnetron co-sputtering 认领 引用 被引量：3
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作者 丁芃 刘发民 +1 位作者 杨新安 李建奇 《Chinese Physics B》 SCIE EI CAS 2008年第2期721-725,共5页
This paper reported that the Mn-doped TiO2 films were prepared by radio frequency （RF） magnetron cosputtering. X-ray diffraction measurements indicate that the samples are easy to form the futile structure, and the ... This paper reported that the Mn-doped TiO2 films were prepared by radio frequency （RF） magnetron cosputtering. X-ray diffraction measurements indicate that the samples are easy to form the futile structure, and the sizes of the crystal grains grow big and big as the Mn concentration increases. X-ray photoemlssion spectroscopy measurements and high resolution transmission electron microscope photographs confirm that the manganese ions have been effectively doped into the TiO2 crystal when the Mn concentration is lower than 21%. The magnetic property measurements show that the Ti1-xMnxO2 （x = 0.21） films are ferromagnetic at room temperature, and the saturation magnetization, coercivity, and saturation field are 16.0 emu/cm^3, 167.5 × 80 A/m and 3740 × 80 A/m at room temperature, respectively. The room-temperature ferromagnetism of the films can be attributed to the new futile Ti1-xMnxO2 structure formed by the substitution of Mn^4＋ for Ti^4＋ into the TiO2 crystal .lattice, and could be explained by O vacancy （Vo）-enhanced ferromagnetism model. 展开更多
关键词 RF magnetron sputtering Mn-doped TiO2 films room-temperature ferromagnetic properties
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Substrate temperature dependence of chemical state and magnetoresistance characteristics of Co–TiO2 nanocomposite films 认领 引用 被引量：1
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作者 Hao-yu CHEN Yi-wen ZHANG +3 位作者 Zhong WU Zhen-bo QIN Shan-shan WU Wen-bin HU 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2020年第9期2502-2509,共8页
Co−TiO2 nanocomposite films were prepared via magnetron sputtering at various substrate temperatures.The films comprise Co particles dispersed in an amorphous TiO2 matrix and exhibit coexisting ferromagnetic and super... Co−TiO2 nanocomposite films were prepared via magnetron sputtering at various substrate temperatures.The films comprise Co particles dispersed in an amorphous TiO2 matrix and exhibit coexisting ferromagnetic and superparamagnetic properties.When the substrate temperature increases from room temperature to 400℃,Co particles gradually grow,and the degree of Co oxidation significantly decreases.Consequently,the saturation magnetization increases from 0.13 to 0.43 T at the same Co content by increasing the substrate temperature from room temperature to 400℃.At a high substrate temperature,conductive pathways form among some of the clustered Co particles.Thus,resistivity rapidly declines from 1600 to 76μΩ·m.The magnetoresistive characteristic of Co−TiO2 films is achieved even at resistivity of as low as 76μΩ·m.These results reveal that the obtained nanocomposite films have low Co oxidation,high magnetization and magnetoresistance at room temperature. 展开更多
关键词 Co TiO2 nanocomposite films ferromagnetic property superparamagnetic property magnetoresistance
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Fabrication of nanoporous TiO_2 films with novel surface morphology on conducting glass(FTO) substrate 认领 引用 被引量：1
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作者 周艺 黄燕 +4 位作者 李荡 何文红 郭长春 吕彩霞 张世英 《Journal of Central South University》 SCIE EI CAS 2012年第10期2740-2745,共6页
The crystalline structure and surface morphology of TiO2 semiconductor coating play an important role in the conversion efficiency of dye-sensitized solar cells. In order to obtain TiO2 coating with controllable morph... The crystalline structure and surface morphology of TiO2 semiconductor coating play an important role in the conversion efficiency of dye-sensitized solar cells. In order to obtain TiO2 coating with controllable morphology and high porosity, nanoporous TiO2 films were fabricated on conducting glass （FTO） substrates, Ti thin films （1.5-2 gin） were deposited on conducting glass （FTO） substrates via the DC sputtering method, and then electrochemically anodized in NH4F/ethylene glycol solution. The crystalline structure and surface morphology of the samples were characterized by X-ray diffraction （XRD） and field emission scanning electron microscopy （FESEM）, respectively. The influences of anodizing potential, electrolyte composition, and pH value on the surface morphology of nanoporous TiO2 films were extensively studied. The growth mechanism of nanoporous TiO2 films was discussed by current density variations with anodizing time. The results demonstrate that nanoporous TiO2 films with high porosity and three-dimensional （3D） networks are observed at 30 V, when the NH4F concentration in ethylene glycol solution is 0.3% （mass fraction） and the electrolyte pH value is 5.0. 展开更多
关键词 nanoporous TiO2 films anodizing potential electrolyte composition pH conducting glass growth mechanism
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Atomic Force Microscopy Studies on the Chemical Treatment of Nanocrystalline Porous TiO_2 Films 认领 引用 被引量：1
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作者 Yuan LIN Feng Zhi JIANG +3 位作者 Jing Bo ZHANG Yan Lin SONG Lei JIANG Xu Rui XIAO 《Chinese Chemical Letters》 SCIE CAS 2002年第5期484-486,共3页
AFM has been utilized to study the surface topography and the local conductivity of nanocrystalline TiO2 films. Improving the local conductivity by Ti(iso-C3H7O)4 treatment is characterized by quantitative analysis of... AFM has been utilized to study the surface topography and the local conductivity of nanocrystalline TiO2 films. Improving the local conductivity by Ti(iso-C3H7O)4 treatment is characterized by quantitative analysis of the simultaneous current image. The mechanism of Ti(iso C3H7O)4 treatment is discussed. 展开更多
关键词 Nanocrystalline TiO2 films chemical treatments AFM topography local conductivity.
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Tuning Effect of N_2 on Atmospheric-Pressure Cold Plasma CVD of TiO_2 Photocatalytic Films 认领 引用 被引量：1
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作者 底兰波 李小松 +3 位作者 赵天亮 常大磊 刘倩倩 朱爱民 《Plasma Science and Technology》 SCIE EI CAS CSCD 2013年第1期64-69,共6页
To deposit TiO2 films through plasma CVD, the partial pressure ratio of O2 to TIC14 should be greater than the stoichiometric ratio （PO2/PTiCl4 〉 1）. However, this may lead to the formation of powder instead of fil... To deposit TiO2 films through plasma CVD, the partial pressure ratio of O2 to TIC14 should be greater than the stoichiometric ratio （PO2/PTiCl4 〉 1）. However, this may lead to the formation of powder instead of film on the substrate when using volume dielectric barrier discharge （volume-DBD） at atmospheric pressure. In this study, by adding N2 into the working gas Ar, TiO2 photocatalytic films were successfully fabricated in the presence of excess O2 （PO2/PTiC14 = 2.6） by using a wire-to-plate atmospheric-pressure volume-DBD. The tuning effect of N2 on the deposition of TiO2 film was studied in detail. The results showed that by increasing the N2 content, the deposition rate and particle size of the TiO2 film were reduced, and its photocatalytic activity was enhanced. The tuning mechanism of N2 is further discussed. 展开更多
关键词 plasma CVD TiO2 photocatalytic films atmospheric-pressure cold plasma,dielectric barrier discharge （DBD） optical emission spectra （OES）
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Microstructure and optical properties of TiO_2 thin films deposited at different oxygen flow rates 认领 引用 被引量：1
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作者 赵保星 周继承 荣林艳 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS 2010年第8期1429-1433,共5页
To research the influence of oxygen flow rate on the structural and optical properties of TiO2 thin film,TiO2 films on glass were deposited by reactive magnetron sputtering.The microstructure and optical properties we... To research the influence of oxygen flow rate on the structural and optical properties of TiO2 thin film,TiO2 films on glass were deposited by reactive magnetron sputtering.The microstructure and optical properties were measured by X-ray diffractometry,AFM and UV-VIS transmittance spectroscopy,respectively.The results show that the films deposited at oxygen flow rate of 10 mL/min has the lowest roughness and the highest transmittance.The absorption angle shifts to longer wavelengths as oxygen flow rates increase from 5 to 10 mL/min,then to shorter ones as the oxygen flow rate increase from 10 to 30 mL/min.The band gap is 3.38 eV,which is nearly constant in the experiment.For the TiO2 thin films deposited at 10 mL/min of oxyge flow rate,there are nano-crystalline structures,which are suitable for anti-reflection(AR) coating in the solar cells structure system. 展开更多
关键词 TiO2 film reactive magnetron sputtering anti-reflection coating solar cell
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Characterization of Sol-gel-derived TiO_2 and TiO_2-SiO_2 Films for Biomedical Applications 认领 引用 被引量：1
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作者 JingxiaoLIU FeiSHI DazhiYANG 《Journal of Materials Science & Technology》 SCIE EI CAS 2004年第5期550-554,共5页
In order to improve the corrosion resistance and biocompatibility of NiTi surgical alloy, TiO2 and TiO2-SiO2 thin films were prepared by sol-gel method. The surface characteristics of the film, which include surface c... In order to improve the corrosion resistance and biocompatibility of NiTi surgical alloy, TiO2 and TiO2-SiO2 thin films were prepared by sol-gel method. The surface characteristics of the film, which include surface composition, microstructure and surface morphology, were studied by X-ray diffraction (XRD), atomic force microscopy (AFM) and X-ray photoelectron spectra (XPS), respectively. A scratching test was used to assess the interface adhesive strength between the film and substrate. The corrosion resistance of NiTi alloy coated with oxide films were studied by anodic polarization curves measurement in biological solution. Additionally, a preliminary study of the in vitro bioactivity of the films was conducted. The results indicated that TiO2 and TiO2-SiO2 (Ti/Si=4:1) films have higher electrochemical corrosion resistance and can be used as protective layers on NiTi alloy. In addition, TiO2-SiO2 composite films have better bioactivity than TiO2 film. 展开更多
关键词 TiO2 TiO2-SiO2 Films Sol-gel process Biocompatibility
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Preparation and Properties of Ag-TiO_2 Thin Films on Glass Substrates 认领 引用 被引量：2
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作者 魏建红 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2002年第3期21-23,共3页
Ag TiO 2 thin films were prepared on glasses.The morphology and structure of Ag TiO 2 films were investigated by XRD, SEM and FT IR.The photocatalytic and hydrophilic properties of Ag TiO 2 thin films were also evalua... Ag TiO 2 thin films were prepared on glasses.The morphology and structure of Ag TiO 2 films were investigated by XRD, SEM and FT IR.The photocatalytic and hydrophilic properties of Ag TiO 2 thin films were also evaluated by examining photocatalytic degradation dichlorophos under sunlight illumination and the change of contact angle respectively.The research results show that the Ag TiO 2 thin film is mainly composed of 20-100nm Ag and TiO 2 particles.The Ag TiO 2 thin films possess a super hydrophilic ability and higher photocatalytic activity than that of pure TiO 2 thin film. 展开更多
关键词 Ag TiO 2 thin film microscope photocatalytic hydrophilic
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Preparation of Nanometer-structured TiO_2 Thin Films by Sol-Gel Method 认领 引用 被引量：2
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作者 何峰 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2002年第4期51-53,共3页
The transparent anatase TiO 2 nanometer thin films were prepared by the sol-gel method on soda-lime glass.X-ray diffraction,thermal analysis and UV-visible spectrophotometer were used to analyze the formation of the p... The transparent anatase TiO 2 nanometer thin films were prepared by the sol-gel method on soda-lime glass.X-ray diffraction,thermal analysis and UV-visible spectrophotometer were used to analyze the formation of the phases.Only increasing the heat-treatment time,the average grain size has no obvious change.The mechanism of grain growth in TiO 2 thin film is probably as follows:the grain of coating will become grain core later;TiO 2 sol constantly deposited on the surface of TiO 2 grain and formed membrane with increasing of coating cycle times;TiO 2 grain in the film grow steadily. 展开更多
关键词 TiO 2 sol-gel method nanometer thin films
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Enhanced Photoelectric Property of Mo-C Codoped TiO2 Films Deposited by RF Magnetron Cosputtering 认领 引用 被引量：2
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作者 罗胜耘 YAN Bingxi 沈杰 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2017年第2期223-228,共6页
Mo-C codoped TiO2 films were prepared by RF magnetron cosputtering. Ultraviolet-visible spectroscopy, atomic force microscopy, X-ray photoelectron spectroscopy, energy dispersive X-ray Analysis and X-Ray Diffraction w... Mo-C codoped TiO2 films were prepared by RF magnetron cosputtering. Ultraviolet-visible spectroscopy, atomic force microscopy, X-ray photoelectron spectroscopy, energy dispersive X-ray Analysis and X-Ray Diffraction were used to study the influences of codoping on energy gap, surface morphology, valence states of elements, ions content and crystal structure, respectively. The concentration of photogenerated carriers was measured by studying photocurrent density, while catalytic property was evaluated by observing degradation rate of methylene blue under visible light. A Mo-doped TiO2 film, whose content of Mo had been optimized in advance, was prepared and later used for subsequent comparisons with codoped samples. The result indicates that Mo-C codoping could curtail the energy gap and shift the absorption edge toward visible range. Under the illumination of visible light, codoped TiO2 films give rise to stronger photocurrent due to smaller band gaps. It is also found that Mo, C codoping results in a porous surface, whose area declines gradually with increasing carbon content. Carbon and Molybdenum doses were delicately optimized. Under the illumination of visible light, sample doped with 9.78at% carbon and 0.36at% Mo presents the strongest photocurrent which is about 8 times larger than undoped TiO2 films, and about 6 times larger than samples doped with Mo only. 展开更多
关键词 Mo-C codoping TiO2 film magnetron sputtering photoelectric photocatalytic property
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Surface Microstructure Characterization of Sol-gel Derived Porous TiO_2 Thin Films 认领 引用 被引量：3
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作者 Jiaguo Yu, Jimmy C. Yu, Bei Cheng, A. S. K. Li, Pak Kan Tse 1) Department of Chemistry, The Chinese University of Hong Kong, Hong Kong, China 2) State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, W 《Rare Metals》 SCIE EI CAS 2001年第3期157-163,共7页
Porous TiO2 thin films were prepared from alkoxide solutions with and without polyethylene glycol (PEG) by sol-get route on soda lime glass, and were characterized by atomic force microscopy (AFM), transmission electr... Porous TiO2 thin films were prepared from alkoxide solutions with and without polyethylene glycol (PEG) by sol-get route on soda lime glass, and were characterized by atomic force microscopy (AFM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results show that TiO2 film prepared from precursor solution without PEG is composed of spherical particles of about 100 nm and several nanometer mesoporous pores. With the increase of the amount of PEG added to the precursor solution, the diameter and the depth of the pores in the resultant films increas on the decomposition of PEG during heat-treatment, which lead to them increase of the surface roughness of the films. XRD and TEM results show that the single anatase phase is precipitated and there are some orientation effects in (101) direction. 展开更多
关键词 sol-gel route porous TiO2 thin films surface microstructure characterization
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Inverted organic solar cells with solvothermal synthesized vanadium-doped TiO2 thin films as efficient electron transport layer 认领 引用 被引量：1
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作者 Mehdi Ahmadi Sajjad Rashidi Dafeh +1 位作者 Samaneh Ghazanfarpour Mohammad Khanzadeh 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第9期406-410,共5页
We investigated the effects of using different thicknesses of pure and vanadium-doped thin films of TiO2 as the electron transport layer in the inverted configuration of organic photovoltaic cells based on poly（3-hex... We investigated the effects of using different thicknesses of pure and vanadium-doped thin films of TiO2 as the electron transport layer in the inverted configuration of organic photovoltaic cells based on poly（3-hexylthiophene） P3HT：[6-6] phenyl-（6） butyric acid methyl ester（PCBM）. 1% vanadium-doped TiO2nanoparticles were synthesized via the solvothermal method. Crystalline structure, morphology, and optical properties of pure and vanadium-doped TiO2 thin films were studied by different techniques such as x-ray diffraction, scanning electron microscopy, transmittance electron microscopy, and UV–visible transmission spectrum. The doctor blade method which is compatible with roll-2-roll printing was used for deposition of pure and vanadium-doped TiO2 thin films with thicknesses of 30 nm and 60 nm. The final results revealed that the best thickness of TiO2 thin films for our fabricated cells was 30 nm. The cell with vanadium-doped TiO2 thin film showed slightly higher power conversion efficiency and great Jsc of 10.7 mA/cm^2 compared with its pure counterpart. In the cells using 60 nm pure and vanadium-doped TiO2 layers, the cell using the doped layer showed much higher efficiency. It is remarkable that the external quantum efficiency of vanadium-doped TiO2 thin film was better in all wavelengths. 展开更多
关键词 inverted polymer solar cells electron transport layer vanadium-doped TiO2 thin films solvothermal
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STUDY ON PHOTOCATALYTIC MECHANISM OF SOL-GEL-DERIVED Pb-DOPED TiO_2 THIN FILMS 认领 引用 被引量：2
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作者 YU Jiaguo ZHAO Qingnan ZHAO Xiujian Wuhan University of Technology 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 1999年第4期1-8,共8页
Pb-doped TiO2 photocatalytic thin films were prepared on a soda-lime glass substrate via sol-gel method using TiO2 sol solution containing lead and characterized by X-ray photoelectron spectroscopy (XPS). The results ... Pb-doped TiO2 photocatalytic thin films were prepared on a soda-lime glass substrate via sol-gel method using TiO2 sol solution containing lead and characterized by X-ray photoelectron spectroscopy (XPS). The results showed that besides oxides of Ti(IV) there is a certain amount of oxides of To(?) and Ti(?) and Pb exists in the forms of PbTiO3 and PbO. The photocatalytic activity of the Pb-doped TiO2 films was evaluated by the photocatalytic decolorization of aqueous methyl orange and photocatalytic mechanism mas also analyzed. 展开更多
关键词 sol-gel method Pb-doped TiO2 thin films XPS photocatalytK mechanism
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Nanostructure Study of TiO2 Films Prepared by Dip Coating Process 认领 引用 被引量：2
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作者 S.M.Attia, Jue WANG, Guangming WU, Jun SHEN and Jianhua MAPohl Institute of Solid State Physics, Tongji University, Shanghai 200092, China 《Journal of Materials Science & Technology》 SCIE EI CAS 2002年第1期31-33,共3页
The microstructure properties of the sol-gel derived TiO2 films were studied by the atomic force microscopy (AFM). The films were prepared by dip coating process. The optical properties of the films were explained on ... The microstructure properties of the sol-gel derived TiO2 films were studied by the atomic force microscopy (AFM). The films were prepared by dip coating process. The optical properties of the films were explained on the basis of the microstructure of the films. 展开更多
关键词 Atomic force microscopy TiO2 thin film Sol-gel process
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Photocatalytic Activities of Amorphous TiO_2-Cr Thin Films Prepared by Magnetron Sputtering 认领 引用 被引量：1
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作者 黄佳木 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2008年第5期610-616,共7页
Chrome-doped titanium oxide films were prepared by reactive magnetron sputtering method. The films deposited on glass slides at room temperature were investigated by atom force microscope, X-ray diffractometer, X-ray ... Chrome-doped titanium oxide films were prepared by reactive magnetron sputtering method. The films deposited on glass slides at room temperature were investigated by atom force microscope, X-ray diffractometer, X-ray photoelectron spectroscopy, UV-Vis spectrophotometer, the photoluminescence （PL） and ellipse polarization apparatus. The results indicate that TiO2-Cr film exists in the form of amorphous. The prepared films possess a band gap of less than 3.20 eV, and a new absorption peak. The films, irradiated for 5 h under UV light, exhibit excellent photocatalytic activities with the optimum decomposition rate at 98.5% for methylene blue. Consequently, the thickness threshold on these films is 114 nm, at which the rate of photodegradation is 95% in 5 h. When the thickness is over 114 nm, the rate of photodegradation becomes stable. This result is completely different from that of crystalloid TiO2 thin film. 展开更多
关键词 amorphous TiO2 magnetron sputtering TiO2-Cr thin films photocatalysis threshold
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