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Influence of nano-CeO_2 on coating structure and properties of electrodeposited Al/α-PbO_2/β-PbO_2 认领 引用 被引量：9
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作者 陈阵 余强 +2 位作者 廖登辉 郭忠诚 武剑 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第5期1382-1389,共8页
Al/α-PbO2/β-PbO2 composite electrodes doped with rare earth oxide （CeO2） were prepared by anodic oxidation method investigate the influence of nano-CeO2 dopants on the properties of Al/α-PbO2/β-PbO2-CeO2 electro... Al/α-PbO2/β-PbO2 composite electrodes doped with rare earth oxide （CeO2） were prepared by anodic oxidation method investigate the influence of nano-CeO2 dopants on the properties of Al/α-PbO2/β-PbO2-CeO2 electrodes and the impact of α-PbO2 as the intermediate layer. The results show that using α-PbO2 as the intermediate layer will benefit the crystallization of β-PbO2 and β-PbO2 is more suitable as the surface layer than α-PbO2. CeO2 dopants change the crystallite size and crystal structure, enhance the catalytic activity, and even change the deposition mechanism of PbO2. The doping of CeO2 in the PbO2 electrodes can enhance the electro-catalytic activity, which is helpful for oxygen evolution, and therefore reduce the cell voltage. 展开更多
关键词 rare earth CeO2 composite electrode material α-PbO2 β-PbO2 cell voltage inert anode
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Effect of Sb dopant amount on the structure and electrocatalytic capability of Ti/Sb-SnO_2 electrodes in the oxidation of 4-chlorophenol 认领 引用 被引量：24
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作者 KONG Jiang-tao SHI Shao-yuan +1 位作者 ZHU Xiu-ping NI Jin-ren 《Journal of Environmental Sciences》 SCIE EI CAS 2007年第11期1380-1386,共7页
Ti/Sb-SnO2 anodes were prepared by thermal decomposition to examine the influence of the amount of Sb dopant on the structure and electrocatalytic capability of the electrodes in the oxidation of 4-chlorophenol. The p... Ti/Sb-SnO2 anodes were prepared by thermal decomposition to examine the influence of the amount of Sb dopant on the structure and electrocatalytic capability of the electrodes in the oxidation of 4-chlorophenol. The physicochemical properties of the Sb-SnO2 coating were markedly influenced by different amounts of Sb dopant. The electrodes, which contained 5% Sb dopant in the coating, presented a much more homogenous surface and much smaller mud-cracks, compared with Ti/Sb-SnO2 electrodes containing 10% or 15% Sb dopant, which exibited larger mud cracks and pores on the surface. However, the main microstructure remained unchanged with the addition of the Sb dopant. No new crystal phase was observed by X-ray diffraction （XRD）. The electrochemical oxidation of 4-chlorophenol on the Ti/SnO2 electrode with 5% Sb dopant was inclined to electrochemical combustion; while for those containing more Sb dopant, intermediate species were accumulated. The electrodes with 5% Sb dopant showed the highest efficiency in the bulk electrolysis of 4-chlorophenol at a current density of 20 mA/cm^2 for 180 min; and the removal rates of 4-chlorophenol and COD were 51.0% and 48.9%, respectively. 展开更多
关键词 4-chlorophenol cyclic voltammogram electrochemical oxidation Sb dopant Ti/Sb-SnO2 electrode
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Effects of current density on preparation and performance of Al/conductive coating/α-PbO_2-Ce O_2-TiO_2/β-Pb O_2-MnO_2-WC-ZrO_2 composite electrode materials 认领 引用 被引量：6
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作者 杨海涛 陈步明 +5 位作者 郭忠诚 刘焕荣 张永春 黄惠 徐瑞东 付仁春 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第10期3394-3404,共11页
Al/conductive coating/α-Pb O2-Ce O2-Ti O2/β-PbO 2-MnO 2-WC-Zr O2 composite electrode material was prepared on Al/conductive coating/α-PbO 2-Ce O2-Ti O2 substrate by electrochemical oxidation co-deposition technique... Al/conductive coating/α-Pb O2-Ce O2-Ti O2/β-PbO 2-MnO 2-WC-Zr O2 composite electrode material was prepared on Al/conductive coating/α-PbO 2-Ce O2-Ti O2 substrate by electrochemical oxidation co-deposition technique. The effects of current density on the chemical composition, electrocatalytic activity, and stability of the composite anode material were investigated by energy dispersive X-ray spectroscopy（EDXS）, anode polarization curves, quasi-stationary polarization（Tafel） curves, electrochemical impedance spectroscopy（EIS）, scanning electron microscopy（SEM）, and X-ray diffraction（XRD）. Results reveal that the composite electrode obtained at 1 A/dm2 possesses the lowest overpotential（0.610 V at 500 A/m2） for oxygen evolution, the best electrocatalytic activity, the longest service life（360 h at 40 °C in 150 g/L H2SO4 solution under 2 A/cm2）, and the lowest cell voltage（2.75 V at 500 A/m2）. Furthermore, with increasing current density, the coating exhibits grain growth and the decrease of content of Mn O2. Only a slight effect on crystalline structure is observed. 展开更多
关键词 composite electrode material A1 substrate β-PbO2-MnO2-WC-ZrO2 electrochemical co-deposition current density
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Photoelectrochemical degradation of Methylene Blue with β-PbO_2 electrodes driven by visible light irradiation 认领 引用 被引量：4
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作者 Guoting Li HoYin Yip +3 位作者 Kin Hang Wong Chun Hu Jiuhui Qu Po Keung Wong 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2011年第6期998-1003,共6页
β-PbO2 electrodes were prepared by electro-deposition and characterized by scanning electron microscopy,X-ray diffraction,X-ray photoelectron spectroscopy,and linear sweep voltammetry.We confirmed pure β-PbO2 crysta... β-PbO2 electrodes were prepared by electro-deposition and characterized by scanning electron microscopy,X-ray diffraction,X-ray photoelectron spectroscopy,and linear sweep voltammetry.We confirmed pure β-PbO2 crystals were on the electrode and it had a high oxygen evolution potential.The photoactivity and photoelectrochemical（PEC） properties of the β-PbO2 electrode were investigated under visible light irradiation（λ 〉 420 nm） for the decolorization of Methylene Blue.Pseudo first-order kinetics parameter（Kapp） for dye decolorization using the β-PbO2 electrode achieved 6.71×10-4 min-1 under visible light irradiation,which indicated its excellent visible light-induced photoactivity.The Kapp of the PEC process was as much as 1.41×10-3 min-1 and was 1.71 times that of visible light irradiation or electrolysis even in the presence of the β-PbO2 electrode.A significant synergetic effect was observed in the PEC system.We also employed TiO2 modified β-PbO2 electrodes in this test,which revealed that the TiO2 immobilized on the β-PbO2 electrode inhibited the visible light-induced PEC efficiency despite the amount of TiO2 used for electrode preparation.The β-PbO2 electrode was also superior to the dimensionally stable anode（Ti/Ru0.3Ti0.7O2） in visible light-induced photoactivity and PEC efficiency. 展开更多
关键词 photocatalysis photoelectrochemical process visible light β-PbO2 electrode
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Preparation of the Ag_2O_2-PbO_2 Modified Electrode and Its Application towards Escherichia coli Fast Counting in Water 认领 引用 被引量：4
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作者 JingGU WenZHANG +3 位作者 YuFengYANG LeiZHENG ZiRongWU LiTongJIN 《Chinese Chemical Letters》 SCIE CAS 2005年第5期635-638,共4页
A novel nano crystalline Ag2O2-PbO2 film chemically modified electrode (CME) was prepared and the CME was characterized by X-ray diffractometer (XRD) and atomic force microscope (AFM). By chronoamperometry, the nano A... A novel nano crystalline Ag2O2-PbO2 film chemically modified electrode (CME) was prepared and the CME was characterized by X-ray diffractometer (XRD) and atomic force microscope (AFM). By chronoamperometry, the nano Ag2O2-PbO2 CME was used as bioelectro- chemical sensor to determine the population of Escherichia coli (E. coli) in water. Compared with conventional methods, it is found that the technique we used is fast and convenient in counting E. coli. 展开更多
关键词 Ag2O2-PbO2 modified platinum electrode Escherichia coli fast counting.
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Electrochemical oxidation of aniline by a novel Ti/TiOxHy/Sb-SnO2electrode 认领 引用 被引量：10
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作者 Xiaoliang Li Hao Xu Wei Yan 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2016年第11期1860-1870,共11页
Electrochemical oxidation of aniline in aqueous solution was investigated over a novel Ti/TiOxHy/Sb-SnO2 electrode prepared by the electrodeposition method.Scanning electron microscopy,X-ray diffraction,and electroche... Electrochemical oxidation of aniline in aqueous solution was investigated over a novel Ti/TiOxHy/Sb-SnO2 electrode prepared by the electrodeposition method.Scanning electron microscopy,X-ray diffraction,and electrochemical measurements were used to characterize its morphology,crystal structure,and electrochemical properties.Removal of aniline by the Ti/TiOxHy/Sb-SnO2electrode was investigated by ultraviolet-Visible spectroscopy and chemical oxygen demand(COD)analysis under different conditions,including current densities,initial concentrations of aniline,pH values,concentrations of chloride ions,and types of reactor.It was found that a higher current density,a lower initial concentration of aniline,an acidic solution,the presence of chloride ions(0.2wt%NaCl),and a three-dimensional(3D)reactor promoted the removal efficiency of aniline.Electrochemical degradation of aniline followed pseudo-first-order kinetics.The aniline(200 mL of 100mg·L-(-1))and COD removal efficiencies reached 100%and 73.5%,respectively,at a current density of 20 mA·cm-(-2),pH of 7.0,and supporting electrolyte of 0.5 wt%Na2SO4 after 2 h electrolysis in a 3D reactor.These results show that aniline can be significantly removed on the Ti/TiOxHy/Sb-SnO2electrode,which provides an efficient way for elimination of aniline from aqueous solution. 展开更多
关键词 Aniline Ti/TiOxHy/Sb-SnO2electrode Electrochemical oxidation Chloride ions Three-dimensional reactor
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退火法制备TiO2/Ti电极及其对有机含铀废水的电化学净化 认领 引用
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作者 彭超 李天宇 +4 位作者 吕慧涛 陈佳琪 颜永得 薛云 田国新 《原子能科学技术》 EI CAS CSCD 北大核心 2026年第1期148-157,共10页
高温气冷堆燃料元件生产过程中会产生相当量的偏碱性含铀废水,其中还含有一定浓度的尿素、聚乙烯醇、四氢糠醇等有机物。为实现有机含铀废水的净化,本研究针对这种废水开展铀去除研究。首先通过对Ti片进行680℃退火处理,制备了TiO2/T... 高温气冷堆燃料元件生产过程中会产生相当量的偏碱性含铀废水,其中还含有一定浓度的尿素、聚乙烯醇、四氢糠醇等有机物。为实现有机含铀废水的净化,本研究针对这种废水开展铀去除研究。首先通过对Ti片进行680℃退火处理,制备了TiO2/Ti电极,然后配制有机含铀模拟溶液,采用电化学法开展模拟溶液中铀的去除研究,探索了碳酸根浓度、pH、铀初始浓度、时间、电压等因素对铀去除率的影响,并推测了过程的反应机理。X射线光电子谱(XPS)、扫描电子显微镜(SEM)、电子能谱(EDS)和X射线衍射(XRD)分析表明,通过退火处理合成的TiO2/Ti电极表面被颗粒状金红石相TiO2覆盖,说明通过退火法能成功制备TiO2/Ti电极。电化学法去除模拟溶液(pH=9)中铀的最优条件为:碳酸钠浓度0.01 mol/L、电压10 V、时间5 h,此条件下铀去除率达95.43%。0.01 mol/L碳酸钠溶液中,铀的还原电位为-0.99 V(vs SCE),其还原过程为一步单电子过程,U(Ⅵ)得到1个电子还原为U(Ⅴ),再歧化为U(Ⅳ)和U(Ⅵ),铀是以UO2和U2O5的形态沉积在电极表面。在4种共存物中,硝酸铵、尿素和聚乙烯醇对铀去除有明显的抑制,而四氢糠醇则没有明显影响。它们共同存在时,在10 V条件下,铀去除率下降至36.75%,但通过提升电压至15 V,铀去除率上升至85.99%。本文所制备TiO2/Ti电极的重复利用性良好,重复使用8次后,铀去除率仍能达到90%以上,每次重复使用,铀的回收率基本能达90%以上。 展开更多
关键词 含铀废水 电化学 TiO2/Ti电极 有机物
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改性Ti/PbO2电极研究进展 认领 引用
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作者 尔古阿沙 高官金 +1 位作者 刘强兵 蒋新宇 《科技导报》 CAS CSCD 北大核心 2026年第5期103-111,共9页
Ti/PbO2电极具有低成本、耐腐蚀性强等优势,广泛用于有机化合物的电催化氧化领域。然而,传统的Ti/PbO2电极在实际应用中存在电流效率低、活性层比表面积小、电催化性能弱、使用寿命短等问题。从Ti/PbO2电极发展的角度,介绍了... Ti/PbO2电极具有低成本、耐腐蚀性强等优势,广泛用于有机化合物的电催化氧化领域。然而,传统的Ti/PbO2电极在实际应用中存在电流效率低、活性层比表面积小、电催化性能弱、使用寿命短等问题。从Ti/PbO2电极发展的角度,介绍了近年来在Ti基体表面刻蚀改性和形状调节、中间层改性、表面PbO2活性层构建及掺杂改性3个方面的重要研究成果,分别聚焦基体改性增强界面结合、引入新型中间层提升导电与稳定性以及活性层掺杂改性优化催化性能。在系统梳理这些成果的基础上,从电极结构稳定性与催化活性协同增强的角度,归纳并提出了提升Ti/PbO2电极综合电化学性能:一是优化基体刻蚀参数与形状设计,构建粗糙且均匀的表面结构,强化基体与中间层的结合强度;二是筛选适配性优良的中间层材料,抑制界面反应与氧化膜生成,提升电荷传输效率;三是精准调控活性层晶型结构,合理掺杂金属或非金属元素,实现催化活性与稳定性的同步提升。最后,对Ti/PbO2电极的发展趋势进行了展望,预计未来将在电极材料改性、结构优化等方面取得关键突破,以进一步提升其电化学性能与稳定性,同时拓展其在复杂体系中的规模化应用范围,加速其工业化进程。 展开更多
关键词 Ti/PbO2电极 电催化氧化 掺杂改性 钛阳极
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水热法制备Nd掺杂Ti/SnO2-Sb电极参数优化研究 认领 引用
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作者 张忱 李阳 《广州化工》 CAS 2026年第15期56-60,共5页
Ti/SnO2-Sb电极具有高催化活性和低成本的优势,其使用寿命偏短的劣势可以通过向活性涂层中掺杂Nd得到解决,但活性涂层中金属盐配比和反应条件的差异均会导致制备电极性能发生明显改变,需要进一步探究。采用水热法制备Ti/SnO2-SbN... Ti/SnO2-Sb电极具有高催化活性和低成本的优势,其使用寿命偏短的劣势可以通过向活性涂层中掺杂Nd得到解决,但活性涂层中金属盐配比和反应条件的差异均会导致制备电极性能发生明显改变,需要进一步探究。采用水热法制备Ti/SnO2-SbNd电极,以电催化降解硝基苯(NB)过程中NB去除率和槽电压增幅(或加速寿命)为参考指标,优化电极制备参数。结果表明,当Sn4+浓度为0.10 mol/L,水热反应温度、时间分别为180℃和16 h,退火时间为2.0 h时,Ti/SnO2-Sb电极综合性能最佳,NB去除率和槽电压增幅分别为94.1%和0.3 V;进一步掺杂2%Nd(相对Sn4+摩尔比),制备出催化活性和稳定性更高的Ti/SnO2-Sb-Nd纳米球状电极,其析氧电位、加速寿命分别为2.24 V和28 min,催化降解NB去除率为96.7%。 展开更多
关键词 Ti/SnO2-Sb电极 Nd掺杂 水热法 催化活性 稳定性
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Enhancing Capacitance Performance of Ti3C2Tx MXene as Electrode Materials of Supercapacitor: From Controlled Preparation to Composite Structure Construction 认领 引用 被引量：23
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作者 Xiaobei Zang Jiali Wang +5 位作者 Yijiang Qin Teng Wang Chengpeng He Qingguo Shao Hongwei Zhu Ning Cao 《Nano-Micro Letters》 SCIE EI CAS CSCD 2020年第6期152-175,共24页
Ti3C2Tx,a novel two-dimensional layer material,is widely used as electrode materials of supercapacitor due to its good metal conductivity,redox reaction active surface,and so on.However,there are many challenges to be... Ti3C2Tx,a novel two-dimensional layer material,is widely used as electrode materials of supercapacitor due to its good metal conductivity,redox reaction active surface,and so on.However,there are many challenges to be addressed which impede Ti3C2Tx obtaining the ideal specific capacitance,such as restacking,re-crushing,and oxidation of titanium.Recently,many advances have been proposed to enhance capacitance performance of Ti3C2Tx.In this review,recent strategies for improving specific capacitance are summarized and compared,for example,film formation,surface modification,and composite method.Furthermore,in order to comprehend the mechanism of those efforts,this review analyzes the energy storage performance in different electrolytes and influencing factors.This review is expected to predict redouble research direction of Ti3C2Tx materials in supercapacitors. 展开更多
关键词 Ti3C2Tx MXene Capacitance performance Storage mechanism Electrode materials Supercapacitor
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A high activity of Ti/SnO_2-Sb electrode in the electrochemicaldegradation of 2,4-dichlorophenol in aqueous solution 认领 引用 被引量：5
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作者 Junfeng Niu Dusmant Maharana +2 位作者 Jiale Xu Zhen Chai Yueping Bao 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2013年第7期1424-1430,共7页
Electrochemicaldegradation of2,4-dichlorophenol （2,4-DCP） in aqueous solutionwas investigated over Ti/SnO2-Sb anode. The factors influencing thedegradation rate, such as applied currentdensity （2-40 mA/cm2 ）, pH ... Electrochemicaldegradation of2,4-dichlorophenol （2,4-DCP） in aqueous solutionwas investigated over Ti/SnO2-Sb anode. The factors influencing thedegradation rate, such as applied currentdensity （2-40 mA/cm2 ）, pH （3-11） and initial concentration （5-200 mg/L）were evaluated. Thedegradation of2,4-DCP followed apparent pseudo first-order kinetics. Thedegradation ratio on Ti/SnO2 -Sb anode attained 〉 99.9% after 20 min of electrolysis at initial 5-200 mg/L concentrations at a constant currentdensity of 30 mA/cm2 with a 10 mmol/L sodium sulphate （Na2SO4 ） supporting electrolyte solution. The results showed that 2,4-DCP （100 mg/L）degradation and total organic carbon （TOC） removal ratio achieved 99.9% and 92.8%, respectively, at the optimal conditions after 30 min electrolysis. Under this condition, thedegradation rate constant （k） and thedegradation half-life （t1/2 ）were 0.21 min1 and （2.8 ± 0.2） min, respectively. Mainly carboxylic acids （propanoic acid, maleic acid, propanedioic acid, acetic acid and oxalic acid） weredetected as intermediates. The energy efficiencies for2,4-DCPdegradation （5-200 mg/L）with Ti/SnO2-Sb anode ranged from 0.672 to 1.602 g/kWh. The Ti/SnO2-Sb anodewith a high activity to rapid organic oxidation could be employed todegrade chlorophenols, particularly2,4-DCP inwastewater. 展开更多
关键词 2 4-dichlorphenol Ti/SnO2 -Sb electrode electrochemicaldegradation total organic carbon
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Preparation and application of pharmaceutical wastewater treatment by praseodymium doped SnO_2/Ti electrocatalytic electrode 认领 引用 被引量：16
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作者 韩国成 刘峥 王永燎 《Journal of Rare Earths》 SCIE EI CAS 2008年第4期532-537,共6页
Praseodymium was selected as a promoter for SnO2/Ti electrode to improve the electrocatalytic performance by electrodeposition in pharmaceutical wastewater treatment; the micrograph and the structure were characterize... Praseodymium was selected as a promoter for SnO2/Ti electrode to improve the electrocatalytic performance by electrodeposition in pharmaceutical wastewater treatment; the micrograph and the structure were characterized by SEM and XRD. Mixture uniform design was used in the optimization of the electrolytic conditions; mathematical model was established according to the rate of wiping COD off, which revealed the relationship between the current intensity, time of electrolysis, the amount of doped Pr, and the ratio of area （SnOJTi：Al）. On the basis of the analysis of the empirical model, the optimized parameters had been obtained; the rate of wiping COD off was up to 94.9%, it decreased from 392 to 20 mg/L. Experimental results showed that the electrocatalytic performance of the electrode doped with Pr was superior for the treatment of pharmaceutical wastewater. 展开更多
关键词 SnO2/Ti electrode electrocatalytic mixture uniform design pharmaceutical wastewater rare earths
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β-PbO2/Sb-SnO2/Ti电极的苯酚电催化性能研究 认领 引用 被引量：3
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作者 李鹏 赵跃民 +2 位作者 王立章 张延乐 芦兆青 《电化学》 CSCD 北大核心 2014年第5期493-498,共6页
采用刷涂热解-电镀工艺制得了β-PbO2/Sb-SnO2/Ti电极.采用X射线衍射（X-ray Diffraction,XRD）和扫描电镜（Scanning Electron Microscope,SEM）进行物相组成分析与微观形貌观察.Sb-SnO2中间层抑制PbF2的生成,NaF促进二氧化铅晶粒的成... 采用刷涂热解-电镀工艺制得了β-PbO2/Sb-SnO2/Ti电极.采用X射线衍射（X-ray Diffraction,XRD）和扫描电镜（Scanning Electron Microscope,SEM）进行物相组成分析与微观形貌观察.Sb-SnO2中间层抑制PbF2的生成,NaF促进二氧化铅晶粒的成型与分散,消除了β-PbO2聚团.据谢乐公式（Scherrer）计算晶粒尺寸为25.2 nm,电极表面结晶度高达100%.极化测试显示,β-PbO2/Sb-SnO2/Ti电极扩散段电位区、析氧电位和Tafel斜率分别为1.85～2.15 V、2.08 V和0.84,优于β-PbO2/Ti电极的1.40～1.80 V、1.75 V和0.36.使用β-PbO2/Sb-SnO2/Ti、β-PbO2/Ti电极在9 mA·cm-2电流密度对苯酚模拟废水处理240 min,前者COD（Chemical Oxygen Demand）去除率、电流效率（Instant Current Efficiency）高达90.1%和63.28%,优于后者66.9%和44.96%.强化寿命测试表明,β-PbO2/Sb-SnO2/Ti电极与β-PbO2/Ti电极相比延长10倍,工业寿命可达8.6a,有较高的工程应用价值. 展开更多
关键词 Sb-SnO2中间层 β-PbO2/Ti 极化特性 电流效率 加速寿命测试
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电沉积条件对Ti/Sb-SnO_2/β-PbO_2电极性能的影响 认领 引用 被引量：3
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作者 杨卫华 王鸿辉 +1 位作者 付芳 黄婷婷 《华侨大学学报（自然科学版）》 CAS 北大核心 2010年第3期297-301,共5页
采用电沉积法镀制Ti/Sb-SnO2/β-PbO2电极,研究电沉积时间、镀液温度、pH值、NaF浓度,以及电流密度等因素对电极催化活性和稳定性的影响规律.结果表明,当电沉积时间为1 h,镀液温度为60℃,镀液pH值为1,NaF浓度为0.04 mol.L-1,组合电流密... 采用电沉积法镀制Ti/Sb-SnO2/β-PbO2电极,研究电沉积时间、镀液温度、pH值、NaF浓度,以及电流密度等因素对电极催化活性和稳定性的影响规律.结果表明,当电沉积时间为1 h,镀液温度为60℃,镀液pH值为1,NaF浓度为0.04 mol.L-1,组合电流密度为600/400 A.m-2(梯度电流密度)时,电极性能最佳,对苯酚降解率达91.4%,强化寿命为23 h. 展开更多
关键词 电沉积 Ti/Sb-SnO2/-βPbO2电极 电催化活性 稳定性
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Electrochemical oxidation of Rhodamine B with cerium and sodium dodecyl benzene sulfonate co-modified Ti/Pb02electrodes:Preparation,characterization,optimization,application 认领 引用 被引量：3
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作者 Zhen Wei Xuanqi Kang +3 位作者 Shangyuan Xu Xiaokang Zhou Bo Jia Qing Feng 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2021年第4期191-202,共12页
Regulation of the electronic structure and interface property becomes a major strategy in the preparation of electrocatalyst.This paper reports the synthesis of cerium(Ce)and sodium dodecyl benzene sulfonate(SDBS)como... Regulation of the electronic structure and interface property becomes a major strategy in the preparation of electrocatalyst.This paper reports the synthesis of cerium(Ce)and sodium dodecyl benzene sulfonate(SDBS)comodified Ti/PbO2electrodes(Ti/PbO2CeSDBS).Ce and SDBS could greatly change the electronic structure and interface property of PbO2.Ti/PbO2CeSDBS exhibited excellent electrocatalytic activity and stability in Rhodamine B(RhB)electrocatalytic oxidation reaction.The improved electrocatalytic activity associates with the synergistic effect of electronic and interface factors.In the electrochemical degradation of RhB,the removal efficiencies of RhB and COD are about 0.880 and 0.694 respectively after the electrolysis of 220 min with Ti/PbO2Ce4SDBS40,which are higher than the contrast Ti/PbO2electrodes.In the meantime,the accelerated lifetime of Ti/PbO2Ce4SDBS40 is more than 6.2 times than that of Ti/PbO2. 展开更多
关键词 Ti/PbO2electrodes Electrocatalytic oxidation
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Ti/Ag-PbO2/Co电极的制备及其电催化苯酚降解性能研究 认领 引用
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作者 王建彬 卫新来 王磊 《现代化工》 CAS CSCD 北大核心 2025年第9期106-112,共7页
为获得较高的催化效果,通过在钛网上镀银并在PbO2活性层中掺杂Co元素制备出Ti/Ag-PbO2/Co电极。首先对电极进行表征分析和电化学性能测试,随后对比了不同电极在苯酚去除中的效果。结果表明,镀银处理可以增加PbO2晶体的结晶度... 为获得较高的催化效果,通过在钛网上镀银并在PbO2活性层中掺杂Co元素制备出Ti/Ag-PbO2/Co电极。首先对电极进行表征分析和电化学性能测试,随后对比了不同电极在苯酚去除中的效果。结果表明,镀银处理可以增加PbO2晶体的结晶度和含量,Co掺杂处理可以使PbO2晶体尺寸变小,这些均有利于增强电极的催化活性和使用寿命。当两者共同作用时,电极的电子转移阻力明显减小,电化学性能更强。将其应用于电催化苯酚性能研究,确定了Ti/Ag-PbO2/Co电极在氯化钠添加量2 g/L、电流密度10 mA/cm2、搅拌速度120 r/min下对260 mL初始浓度为100 mg/L的苯酚模拟废水进行催化降解,效果最佳,反应30 min时苯酚去除率为99.8%,能耗仅为1.0 kWh/m3。该电极进行10次重复试验后对苯酚去除率没有明显降低,表明电极具有较高的稳定性。 展开更多
关键词 电催化氧化 Ti/PbO2电极 苯酚 废水降解
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Electrochemical treatment of COD in biologically pretreated coking wastewater using Ti/RuO2-IrO2 electrodes combined with modified coke 认领 引用 被引量：3
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作者 HE Xu-wen LIU Li-yuan GONG Jing-wen WANG Jian-bing QIN Qiang WANG Hao 《Journal of Coal Science & Engineering(China)》 2011年第4期426-430,共5页
The electrochemical treatment of COD contained in biologically pretreated coking wastewater treated by a three-dimensional electrode system with modified coke as the particle electrode was investigated. And the electr... The electrochemical treatment of COD contained in biologically pretreated coking wastewater treated by a three-dimensional electrode system with modified coke as the particle electrode was investigated. And the electrochemical perromance of the coke modified with various active components was studied. The results show that the coke modified with Fe（NO3）2 has the lowest energy consumption and higher COD removal rate under the same condition, and the modified coke has better surface characteristics for the purpose of this study. In addition, the kinetic constant was also calculated. The study shows that the three-dimensional electrode system with Fe （NO3）z-modified coke can give a satisfactory solution in biologically pretreated coking wastewater. 展开更多
关键词 three-dimensional electrode Ti/RuO2-IrO2 anode Fe （NO3）2-modified coke coking wastewater
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Electro-catalytic degradation properties of Ti/SnO_2–Sb electrodes doped with different rare earths 认领 引用 被引量：6
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作者 Fu-Liang Zhu Yan-Shuang Meng Xiu-Yang Huang 《Rare Metals》 SCIE EI CAS CSCD 2016年第5期412-418,共7页
Ti/SnO2–Sb electrode has a good effect on the removal of organic pollutants. But its short service life limits its large-scale application in industry. Electro-catalytic degradation performances and service life of t... Ti/SnO2–Sb electrode has a good effect on the removal of organic pollutants. But its short service life limits its large-scale application in industry. Electro-catalytic degradation performances and service life of the electrode can be significantly improved by doping rare earth（RE） ions into the oxide coating of Ti/SnO2–Sb electrode. Ti/SnO2–Sb electrodes doped with different RE elements（Ce, Dy, La, and Eu） were prepared by the thermal decomposition method at 550 ℃. Electro-catalytic degradation performances of electrodes doped with different RE elements were evaluated by linear sweep voltammetry（LSV） and Tafel curves. During the electrolysis,the conversion of p-nitrophenol was performed with these electrodes as anodes under galvanostatic control. The structures and morphologies of the surface coating of the electrodes were characterized by scanning electron microscope（SEM）. The results demonstrate that the electro-catalytic degradation performances of Ti/SnO2–Sb electrodes are improved to different levels by doping different RE ions. Improved Ti/SnO2–Sb electrodes by the introduction of different RE have higher oxygen evolution potential, better electro-catalysis ability, better coverage,and longer electrode life. 展开更多
关键词 Ti/SnO_2–Sb electrode Rare earth doped Thermal decomposition method Catalytic degradation
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Sn掺杂Ti/RuO2⁃IrO2电极的制备及电催化氧化苯酚性能分析 认领 引用
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作者 任巧琳 王晓鹏 +5 位作者 严文君 杨涛 陈泽红 王家信 郑利军 王忠德 《高校化学工程学报》 EI CAS CSCD 北大核心 2025年第5期937-946,共10页
针对焦化废水对环境造成的污染问题,提出利用基于热解法制备的Sn掺杂Ti/RuO2⁃IrO2电极(SE)处理焦化废水。对材料的形貌、结构和性能等进行系统的表征和分析,通过试验考察了电解质种类、电流密度、电解质浓度、苯酚初始浓度和溶液... 针对焦化废水对环境造成的污染问题,提出利用基于热解法制备的Sn掺杂Ti/RuO2⁃IrO2电极(SE)处理焦化废水。对材料的形貌、结构和性能等进行系统的表征和分析,通过试验考察了电解质种类、电流密度、电解质浓度、苯酚初始浓度和溶液初始pH对SE降解苯酚性能的影响。结果表明,SE在最佳条件下(电流密度为20 mA·cm-2、NaCl质量浓度为900 mg·L-1、苯酚质量浓度为300 mg·L-1且溶液pH无需调节)表现出良好的电催化活性且苯酚降解过程符合分段一级动力学模型,同时探究了反应过程中存在的活性物种和苯酚可能的降解路径。此外,SE具有良好的稳定性和实际应用性,为开发焦化废水处理新技术提供参考。 展开更多
关键词 Sn掺杂Ti/RuO2⁃IrO2电极 苯酚 废水处理 电催化氧化
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改性Ti/SnO2-Sb电极电催化降解硝基苯研究 认领 引用
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作者 李阳 陈平 +2 位作者 丁家正 李晋 李敏 《应用化工》 CAS 北大核心 2025年第10期2547-2552,2559,共6页
硝基苯(NB)作为一种生物毒性高、生化性能差的化工原料,常规氧化剂难以将其分解。通过水热法制备出具有大量三维球形颗粒的Ti/Ti O2-NTs/Sn O2-Sb-Nd-Pt电极,由线性伏安曲线和加速寿命测试得出析氧电位为2.03 V、加速寿命为94.7 ... 硝基苯(NB)作为一种生物毒性高、生化性能差的化工原料,常规氧化剂难以将其分解。通过水热法制备出具有大量三维球形颗粒的Ti/Ti O2-NTs/Sn O2-Sb-Nd-Pt电极,由线性伏安曲线和加速寿命测试得出析氧电位为2.03 V、加速寿命为94.7 h。改性电极在单室电解槽中对NB、COD去除率分别为88.9%和73.5%,去除1 g NB所需电荷量为16.0 Ah,远低于现有文献报道电极;相同反应条件下,双室电解槽阳极室中NB、COD去除率分别为63.7%和55.2%,阴极室中NB、COD去除率分别为89.5%和26.3%,阴极室生成苯胺(248 mg/L)是其矿化率低的主要原因。结果说明,相较于双室电解槽,单室电解槽可以同时利用电催化还原和电催化氧化技术,实现NB的更高效降解。淬灭实验表明电催化降解NB主要通过羟基自由基(·OH)机制,形成中间产物苯酚、硝基苯酚、苯二酚和苯醌,最终转化为CO2和H2O。此外,NB还可通过还原生成亚硝基苯和苯胺,进一步氧化为偶氮苯或联苯胺,最终被矿化。 展开更多
关键词 Ti/SnO2-Sb电极 电催化 硝基苯 降解机理
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