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High photocatalytic activity of Cu2O/TiO2/Pt composite films prepared by magnetron sputtering 认领 引用 被引量：4
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作者 Guang-Xiao Ren Bin Yu +3 位作者 Yi-Ming Liu Hong-Xia Wang Wang-Gang Zhang Wei Liang 《Rare Metals》 SCIE EI CAS CSCD 2017年第10期821-827,共7页
Cu2O/TiOa/Pt three-layer films were deposited on glass substrates using magnetron sputtering method. The surface morphology and the optical properties of the composite film were characterized by X-ray diffraction （XR... Cu2O/TiOa/Pt three-layer films were deposited on glass substrates using magnetron sputtering method. The surface morphology and the optical properties of the composite film were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, ultraviolet- visible spectroscopy （UV-Vis） and photoluminescence spectroscopy （PL）. The photocatalytic activity of the samples was evaluated by the photocatalytic degradation of methyl orange （MO） aqueous solution under visible light irradiation. The results indicate that the Cu2O/TiO2/Pt composite films are made up of three layers which are Pt layer, anatase-TiO2 layer and Cu2O layer from bottom to top. The surface of the films is even and composed of regular-shaped spherical particles. The photocatalytic activity of the Cu2O/TiO2/Pt three-layer film is much higher than that of the Cu2O/TiO2 double-layer film. Such enhancement is ascribed to the presence of Pt layer, which further inhibits the photogenerated electron-hole recombination, prolongs the lifetime of the photogenerated carriers, increases the quantum efficiency and hence improves the photocatalytic activity of the film effectively. 展开更多
关键词 Cu2O/TiO2/Pt Composite films Visible light Photocatalytic activity
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FeOOH/Cu 2 O复合粉体的制备及其光催化性能 认领 引用
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作者 邹欣伟 王雨 +1 位作者 王国斌 张旭明 《太原科技大学学报》 2026年第4期355-360,共6页
为提高氧化亚铜在可见光下的光催化效率,引入羟基氧化铁,制备出羟基氧化铁/氧化亚铜复合粉体材料。研究了羟基氧化铁的用量对氧化亚铜降解性能的影响,利用紫外可见漫反射光谱(UV-Vis)分析了复合材料的光吸收性能。结果表明:该复合粉体... 为提高氧化亚铜在可见光下的光催化效率,引入羟基氧化铁,制备出羟基氧化铁/氧化亚铜复合粉体材料。研究了羟基氧化铁的用量对氧化亚铜降解性能的影响,利用紫外可见漫反射光谱(UV-Vis)分析了复合材料的光吸收性能。结果表明:该复合粉体材料在光催化降解甲基橙中展现出优异的性能。其所构建的异质结结构和特殊的能带结构,有效地促进了光生电子-空穴的分离。同时,相比较于单一氧化亚铜,该复合粉体材料有效提升了光催化性能,在光反应150 min时对甲基橙溶液的降解速率达到70%. 展开更多
关键词 氧化亚铜 羟基氧化铁 复合粉体 光催化降解
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Cu/Cu2O催化剂的制备及其电催化硝酸盐产氨性能研究 认领 引用
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作者 李松泽 胡茂从 《现代化工》 CAS CSCD 北大核心 2026年第7期101-105,共5页
以泡沫铜为基底,经预处理、空气煅烧制备CuO电极。通过原位电化学重构法,在电解液中分别于-1.0、-1.4、-1.6 V(vs.Ag/AgCl)恒定电位下还原60 min,成功制备3种Cu/Cu2O复合催化剂。该催化剂由Cu0和Cu+共同组成,在电化学还原过程... 以泡沫铜为基底,经预处理、空气煅烧制备CuO电极。通过原位电化学重构法,在电解液中分别于-1.0、-1.4、-1.6 V(vs.Ag/AgCl)恒定电位下还原60 min,成功制备3种Cu/Cu2O复合催化剂。该催化剂由Cu0和Cu+共同组成,在电化学还原过程中发生表面价态变化与结构演变,其中由-1.4 V(vs.Ag/AgCl)还原的Cu/Cu2O复合催化剂表现出最优电催化硝酸盐还原制氨性能,氨产率达5704.6μg/(h·cm2),法拉第效率高达98.7%,为廉价高效制氨催化剂的设计提供了有效途径。 展开更多
关键词 泡沫铜 原位电化学重构 Cu/Cu2O复合催化剂
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ErCu/TiO2对N2O的催化分解性能与机理 认领 引用
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作者 高宇 李坤 《环境工程学报》 CAS CSCD 北大核心 2025年第4期978-987,共10页
为解决氨动力船舶的N2O排放问题,助力全球航运业加快绿色转型发展,该研究利用浸渍法合成出不同稀土元素改性的Cu/TiO2催化剂,考察了不同稀土元素对N2O去除性能的影响,优化了ErxCu/TiO2催化剂对N2O的去除性能。通过评... 为解决氨动力船舶的N2O排放问题,助力全球航运业加快绿色转型发展,该研究利用浸渍法合成出不同稀土元素改性的Cu/TiO2催化剂,考察了不同稀土元素对N2O去除性能的影响,优化了ErxCu/TiO2催化剂对N2O的去除性能。通过评估不同Er负载量对N2O催化分解性能的影响,获得了性能优化的Er10Cu/TiO2催化剂。利用X射线衍射、N2吸附-脱附、氧气程序升温脱附、氢气程序升温还原、原位漫反射红外傅立叶变换红外光谱等材料表征测试方法,深入探究相关反应机理。结果表明,相较于LaCu/TiO2、CeCu/TiO2、PrCu/TiO2、HoCu/TiO2催化剂,ErCu/TiO2催化剂具有更加优异的N2O催化分解性能。采用质量分数为10%的Er改性Cu/TiO2得到的Er10Cu/TiO2催化剂展现出优异的氧化还原性能和丰富的表面氧空位。Er10Cu/TiO2催化剂还具有较强的捕获和活化O2分子的能力,有利于增强对N2O的催化转化效率。 展开更多
关键词 氨动力船舶 N2O催化分解 Cu/TiO2催化剂 Er改性
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Utilization of steelwork off-gases through methanol synthesis:Sulfur-induced dynamic migration of ZnOx over industrial Cu/ZnO/Al2O3 catalyst and the poisoning mechanism 认领 引用
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作者 Yukun Tian Yu Zeng +5 位作者 Ziyang Chen Hua Tong Ming Chen Zhiyong Zhong Daiqi Ye Limin Chen 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2025年第12期659-673,共15页
The reduction of carbon emissions in the steel industry is a significant challenge,and utilizing CO2 from carbon intensive steel industry off-gases for methanol production is a promising strategy for decarbonizatio... The reduction of carbon emissions in the steel industry is a significant challenge,and utilizing CO2 from carbon intensive steel industry off-gases for methanol production is a promising strategy for decarbonization.However,steelwork off-gases typically contain various impurities,including H2S,which can deactivate commercial methanol synthesis catalysts,Cu/ZnO/Al2O3(CZA).Reverse water-gas shift(RWGS)reaction is the predominant side reaction in CO2 hydrogenation to methanol which can occur at ambient pressure,enabling the decouple of RWGS from methanol production at high pressure.Then,a series of activated CZA catalysts has been in-situ pretreated in 400 ppm H2S/Ar at 250℃and tested for both RWGS reaction at ambient pressure and CO2 hydrogenation to methanol at high pressure.An innovative decoupling strategy was employed to isolate the RWGS reaction from the methanol synthesis process,enabling the investigation of the evolution of active site structures and the poisoning mechanism through elemental analysis,X-ray Diffraction,X-ray Photoelectron Spectroscopy,Fourier Transform Infrared Spectroscopy,Temperature Programmed Reduction and CO2 Temperature Programmed Desorption.The results indicate that there are different dynamic migration behaviors of ZnOx in the two reaction systems,leading to different poisoning mechanisms.These interesting findings are beneficial to develop sulfur resistant and durable highly efficient catalysts for CO2 hydrogenation to methanol,promoting the carbon emission reduction in steel industry. 展开更多
关键词 Steelwork off-gases CO2hydrogenation to methanol H2S Cu/Zn O/Al2O3catalysts ZnOxmigration Deactivation and promotion mechanisms
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面向氨燃料发动机废气N2O去除的Cu/TiO2催化剂的性能及催化机理 认领 引用
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作者 高宇 李坤 《科学技术与工程》 EI 北大核心 2025年第13期5681-5688,共8页
推动绿氨燃料上船应用已被普遍认为是实现全球航运业绿色低碳转型可行途径。然而,船用氨燃料发动机存在的N2O排放问题已成为阻碍氨动力船舶发展的关键技术瓶颈之一。针对这一问题,采用浸渍法制备出一系列以TiO2为载体的过渡金属... 推动绿氨燃料上船应用已被普遍认为是实现全球航运业绿色低碳转型可行途径。然而,船用氨燃料发动机存在的N2O排放问题已成为阻碍氨动力船舶发展的关键技术瓶颈之一。针对这一问题,采用浸渍法制备出一系列以TiO2为载体的过渡金属氧化物催化剂,考察了过渡金属元素类型对催化剂N2O去除性能的影响,并研究获得了性能优化的Cux/TiO2催化剂。结果表明,与Fe5/TiO2、Mn5/TiO2、Co5/TiO2、Ni5/TiO2催化剂相比,Cu5/TiO2催化剂显示出优异的催化活性,其N2O转化率可在350℃达到100%。除此之外,Cu5/TiO2催化剂还具有良好的抗水性能。5%是最佳的铜负载量。采用X射线衍射、N2吸附脱附、H2程序升温还原、O2程序升温脱附、原位漫反射傅里叶变换红外光谱等表征手段对性能较优的Cu5/TiO2催化剂的物化性质和表面反应中间体进行了表征,从多角度深入讨论了相关催化反应机理。结果显示,与其他Cux/TiO2催化剂相比,Cu5/TiO2催化剂具有较高的活性物种分散度、比表面积、氧空位含量以及较强的氧化还原性能,有利于其展现出较优的催化活性。Cu5/TiO2催化剂表面的主要活性物种为Cu2+和Cu+,N2O的吸附和解离是催化反应的关键步骤。 展开更多
关键词 氨燃料发动机 废气处理 Cu/TiO2催化剂 N2O催化分解
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TiO2/Cu2O/Pt复合空心微球的制备及其光催化性能 认领 引用 被引量：7
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作者 刘峰强 王黎明 +2 位作者 范顶 徐丽慧 潘虹 《无机化学学报》 SCIE CAS CSCD 北大核心 2023年第2期300-308,共9页
以锐钛矿相TiO2溶胶为基底,采用沉淀法和液相沉积法制备了TiO2/Cu2O/Pt复合空心微球,通过改变nTi4+∶nCu2+和H2PtCl6·6H2O溶液的加入量对TiO2的形貌和结构进行调控,采用不同的方法对不同样品的物相及... 以锐钛矿相TiO2溶胶为基底,采用沉淀法和液相沉积法制备了TiO2/Cu2O/Pt复合空心微球,通过改变nTi4+∶nCu2+和H2PtCl6·6H2O溶液的加入量对TiO2的形貌和结构进行调控,采用不同的方法对不同样品的物相及结构、微观形貌和光学性能进行了对比分析。分析结果表明,复合材料中Pt与Cu2O的引入产生协同效应,不仅在一定程度上阻止了电子-空穴的复合,还降低了禁带宽度,在可见光区域光吸收明显增强。与TiO2、Cu2O和TiO2/Cu2O光催化剂相比较,TiO2/Cu2O/Pt降解有机污染物的能力显著增强,首次光照120 min可降解93%的甲基橙(MO)溶液,4次循环后降解率为71%,具有良好的光催化稳定性能。 展开更多
关键词 TiO2/Cu2O/Pt 空心微球 协同效应 光催化降解
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Cu_2O/TiO_2/Pt复合薄膜的制备及其性能 认领 引用 被引量：3
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作者 余彬 王红霞 +1 位作者 梁伟 张王刚 《中国表面工程》 CAS CSCD 北大核心 2014年第3期15-19,共5页
为了降解环境污染物,通过磁控溅射的方法在玻璃基底上溅射沉积Cu2O/TiO2/Pt复合薄膜。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、紫外可见分光光谱仪(UV-vis)和光致发光光谱仪(PL)对复合薄膜的表面形貌和光学性能进行分析。通过可见... 为了降解环境污染物,通过磁控溅射的方法在玻璃基底上溅射沉积Cu2O/TiO2/Pt复合薄膜。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、紫外可见分光光谱仪(UV-vis)和光致发光光谱仪(PL)对复合薄膜的表面形貌和光学性能进行分析。通过可见光下对甲基橙溶液的光催化降解试验研究了薄膜的光催化活性。结果表明:Cu2O/TiO2/Pt复合薄膜共有3层,从下到上依次为Pt层、锐钛矿型TiO2层和Cu2O层。薄膜表面平整致密,由形状规则的球形颗粒组成。Cu2O/TiO2/Pt复合薄膜的光催化活性高于Cu2O/TiO2复合薄膜的和纯TiO2薄膜的光催化活性。光催化活性的提高是由于Pt层的存在进一步抑制了光生电子与空穴的复合,延长了光生载流子的寿命,提高了量子产率,进而有效地改善了薄膜的光催化活性。 展开更多
关键词 Cu2O TiO2 Pt 复合薄膜 可见光 光催化活性
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Electronic and optical properties of Au-doped Cu_2O:A first principles investigation 认领 引用 被引量：6
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作者 姜中钱 姚钢 +4 位作者 安辛友 符亚军 曹林洪 吴卫东 王雪敏 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第5期470-477,共8页
The Cu2O and Au-doped Cu2O films are prepared on MgO （001） substrates by pulsed laser deposition. The X-ray photoelectron spectroscopy proves that the films are of Au-doped Cu2O. The optical absorption edge decrease... The Cu2O and Au-doped Cu2O films are prepared on MgO （001） substrates by pulsed laser deposition. The X-ray photoelectron spectroscopy proves that the films are of Au-doped Cu2O. The optical absorption edge decreases by 1.6% after Au doping. The electronic and optical properties of pure and Au-doped cuprite Cu2O films are investigated by the first principles. The calculated results indicate that Cu2O is a direct band-gap semiconductor. The scissors operation of 1.64 eV has been carried out. After correcting, the band gaps for pure and Au doped Cu2O are about 2.17 eV and 2.02 eV, respectively, decreasing by 6.9%. All of the optical spectra are closely related to the dielectric function. The optical spectrum red shift corresponding to the decreasing of the band gap, and the additional absorption, are observed in the visible region for Au doped Cu2O film. The experimental results are generally in agreement with the calculated results. These results indicate that Au doping could become one of the more important factors influencing the photovoltaic activity of Cu2O film. 展开更多
关键词 Cu2O electronic structure optical properties first-principles
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A density functional theory study on the adsorption of CO and O_2 on Cu-terminated Cu_2O(111) surface 认领 引用 被引量：6
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作者 李敏 张俊英 +1 位作者 张跃 王天民 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第6期456-461,共6页
The adsorptions of CO and 02 molecules individually on the stoichiometric Cu-terminatcd Cu20 （111） surface are investigated by first-principles calculations on the basis of the density functional theory. The calcula... The adsorptions of CO and 02 molecules individually on the stoichiometric Cu-terminatcd Cu20 （111） surface are investigated by first-principles calculations on the basis of the density functional theory. The calculated results indicate that the CO molecule preferably coordinates to the Cu2 site through its C atom with an adsorption energy of-1.69 eV, whereas the 02 molecule is most stably adsorbed in a tilt type with one O atom coordinating to the Cu2 site and the other O atom coordinating to the Cul site, and has an adsorption energy of -1.97 eV. From the analysis of density of states, it is observed that Cu 3d transfers electrons to 2π orbital of the CO molecule and the highest occupied 5σ orbital of the CO molecule transfers electrons to the substrate. The sharp band of Cu 4s is delocalized when compared to that before the CO molecule adsorption, and overlaps substantially with bands of the adsorbed CO molecule. There is a broadening of the 2π orbital of the 02 molecule because of its overlapping with the Cu 3d orbital, indicating that strong 3d-2π interactions are involved in the chemisorption of the 02 molecule on the surface. 展开更多
关键词 adsorption Cu2O （111） density function theory
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Pt-Cu/TiO2{001}纳米片用于CO2加氢制甲醇反应的研究 认领 引用 被引量：5
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作者 梁珑 张玉冬 +2 位作者 文进军 叶代启 陈礼敏 《环境科学学报》 CAS CSCD 北大核心 2020年第7期2408-2416,共9页
以高暴露{001}晶面的TiO2纳米片为载体,利用共还原法负载0.5%的Pt和一定量的Cu得到Pt-Cu/TiO2{001}催化剂,并在P=3.0 MPa,T=200~300℃,V(N2)∶V(H2)∶V(CO2)=8∶69∶23,空速(WHSV)=3600 mL·g-1·h-1反应... 以高暴露{001}晶面的TiO2纳米片为载体,利用共还原法负载0.5%的Pt和一定量的Cu得到Pt-Cu/TiO2{001}催化剂,并在P=3.0 MPa,T=200~300℃,V(N2)∶V(H2)∶V(CO2)=8∶69∶23,空速(WHSV)=3600 mL·g-1·h-1反应条件下评价了催化剂催化CO2加氢制甲醇的反应性能.XRD、XPS、EPR和CO2-TPD等的表征表明,与催化剂Cu/TiO2相比,引入Pt后,催化剂由于金属Pt的电子促进作用使负载的金属与载体之间的相互作用更强,进而有利于稳定Cu颗粒尺寸且载体形成了更多缺陷(如氧空位、Ti3+).因此,Pt-Cu/TiO2{001}催化剂的金属与载体界面上的活性位点更多,从而表现出更好的CO2活化能力和甲醇生成性能. 展开更多
关键词 CO2加氢 甲醇 Pt-Cu/TiO2{001}纳米片 电子促进作用 金属-载体强相互作用 缺陷
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Ordered mesoporous Cu-ZnO-Al_2O_3 adsorbents for reactive adsorption desulfurization with enhanced sulfur saturation capacity 认领 引用 被引量：6
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作者 Yaqing Liu a Yuan Pan b +2 位作者 Hongying Wang a Yunqi Liu a Chenguang Liu a 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2018年第9期1543-1551,共9页
To enhance sulfur adsorption and reactive activity, ordered mesoporous Cu-ZnO-Al2O3 adsorbents were prepared by a novel one-pot evaporation-induced self-assembly strategy using P123 as a structure-directing agent and ... To enhance sulfur adsorption and reactive activity, ordered mesoporous Cu-ZnO-Al2O3 adsorbents were prepared by a novel one-pot evaporation-induced self-assembly strategy using P123 as a structure-directing agent and ethanol as the solvent for reactive adsorption desulfurization. The metal oxide precursor molecules around P123 micellized, and self-assembly simultaneously occurred during evaporation from an ethanol solution at 60 °C, leading to the formation of the p6 mm hexagonal symmetry mesoporous structure. Characterization results prove that the Cu-ZnO-Al2O3 adsorbents possess an ordered mesoporous structure with high thermal stability, large surface area（386–226 m2/g）, large pore volume（0.60–0.46 cm3/g）, and good dispersion of ZnO and Cu, which is beneficial for transforming S-compounds to ZnO. The sulfur saturation capacity of the ordered-mesoporous-structure Cu-ZnO-Al2O3 adsorbents is larger（49.4 mg/g） than that of the unordered mesoporous structure（13.5 mg/g）. 展开更多
关键词 Cu‐ZnO‐Al2O3Or deredmesoporous structure One‐potevaporation‐induced self‐assembly Reactiveads orptiondesul furization Sulfursaturation capacity
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Insights into SO_2 and H_2O co-adsorption on Cu(100) surface with calculations of density functional theory 认领 引用 被引量：1
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作者 魏薪 董超芳 +3 位作者 陈章华 黄建业 肖葵 李晓刚 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第12期4102-4109,共8页
The co-adsorption behaviors of SO2 and H2 O on face-centered cubic Cu（100） ideal surface were studied using the GGA-r PBE method of density functional theory（DFT） with slab models. The optimized structures of sing... The co-adsorption behaviors of SO2 and H2 O on face-centered cubic Cu（100） ideal surface were studied using the GGA-r PBE method of density functional theory（DFT） with slab models. The optimized structures of single H2 O and SO2 on Cu（100） surface were calculated at the coverage of 0.25 ML（molecular layer） and 0.5 ML. The results show that there was no obvious chemical adsorption of them on Cu（100） surface. The adsorbed structures, adsorption energy and electronic properties including difference charge density, valence charge density, Bader charge analysis and partial density of states（PDOS） of co-adsorbed structures of H2 O and SO2 were investigated to illustrate the interaction between adsorbates and surface. H2 O and SO2 can adsorb on surface of Cu atoms chemically via molecule form at the coverage of 0.25 ML, while H2 O dissociated into OH adsorbed on surface and H bonded with SO2 which keeps away from surface at the coverage of 0.5 ML. 展开更多
关键词 SO2 H2O Cu density functional theory co-adsorption slab model adsorption energy charge transfer
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Performance optimization of self-powered visible photodetectors based on Cu2O/electrolyte heterojunctions 认领 引用
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作者 Zhi-Ming Bai Ying-Hua Zhang +2 位作者 Zhi-An Huang Yu-Kun Gao Jia Liu 《Chinese Physics B》 SCIE EI CAS CSCD 2020年第12期531-535,共5页
The performance of the self-powered photodetectors based on the Cu2O/electrolyte heterojunctions is optimized by adjusting morphology and structure of the Cu2O film.The Cu2O film with a deposition time of 2000 s posse... The performance of the self-powered photodetectors based on the Cu2O/electrolyte heterojunctions is optimized by adjusting morphology and structure of the Cu2O film.The Cu2O film with a deposition time of 2000 s possesses a largest current density of 559.6μA/cm2 under visible light illumination at zero bias,with a rising time of 5.2 ms and a recovering time of 9.0 ms.This optimized Cu2O film has a highest responsivity of about 25.8 mA/W for visible light,and a negligible responsivity for UV light.The high crystallinity and excellent charge transfer property are responsible for the improved photodetection performance. 展开更多
关键词 self-powered visible photodetector Cu2O photoelectrochemical
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TiO_2-Pt/CuS光电材料的制备及性能研究 认领 引用
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作者 韩严和 鲁承豪 +3 位作者 承启 刘承情 李亦涵 陈家庆 《功能材料》 EI CAS CSCD 北大核心 2015年第9期9086-9091,共6页
采用电化学沉积Pt和化学沉积CuS的方法对TiO2纳米管阵列电极进行复合修饰,获得了二元TiO2-Pt和三元TiO2-Pt/CuS纳米结构体系。用SEM和TEM-EDS对催化剂进行了表征,并用水和有机物作为目标物,评价所制备的催化剂的光电活性。结果表明,TiO... 采用电化学沉积Pt和化学沉积CuS的方法对TiO2纳米管阵列电极进行复合修饰,获得了二元TiO2-Pt和三元TiO2-Pt/CuS纳米结构体系。用SEM和TEM-EDS对催化剂进行了表征,并用水和有机物作为目标物,评价所制备的催化剂的光电活性。结果表明,TiO2在电化学和化学沉积后都能够保持原有形貌;Pt在纳米管内和阵列表面都有沉积,部分CuS与Pt形成混相复合状态。水的分解和有机物的降解的结果表明,所制备的光电材料的光电活性顺序为TiO2-Pt/CuS>TiO2-Pt>TiO2。 展开更多
关键词 复合半导体 TiO2 CuS 光电活性
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Pt-Cu_2O/TiO_2复合催化剂的制备及光催化制氢活性 认领 引用
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作者 涂盛辉 胡亚平 +2 位作者 戴策 王犇 杜军 《材料导报》 EI CAS CSCD 北大核心 2016年第22期5-9,15,共5页
采用化学沉积法制备了Cu_2O/TiO_2复合光催化剂。通过扫描电子显微镜(SEM)、能谱分析(EDS)、X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、紫外-可见漫反射光谱(DRS)表征复合催化剂的微观形貌、元素组成、结构和光学特性。以H_2PtCl_6... 采用化学沉积法制备了Cu_2O/TiO_2复合光催化剂。通过扫描电子显微镜(SEM)、能谱分析(EDS)、X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、紫外-可见漫反射光谱(DRS)表征复合催化剂的微观形貌、元素组成、结构和光学特性。以H_2PtCl_6为无机前驱体对复合材料进行Pt负载,研究了不同Cu_2O含量对制氢活性的影响及不同光源下的制氢活性。结果表明,该复合催化剂表现出较好的光催化制氢活性,当Cu_2O的含量为1%(质量分数)时,氢气的产生量最高。 展开更多
关键词 化学沉积法 光催化 制氢 Pt-Cu2O/TiO2
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A DFT Study of CO Adsorption on the Cu_2O(111) Surface with Oxygen Vacancy 认领 引用
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作者 孙宝珍 陈文凯 +1 位作者 李奕 陆春海 《Chinese Journal of Structural Chemistry》 SCIE CAS 2009年第3期311-314,共4页
First-principles calculations based on density functional theory （DFr） and the generalized gradient approximation （GGA） have been used to study the adsorption of CO molecule on the Cu2O（111） oxygen-vacancy surfa... First-principles calculations based on density functional theory （DFr） and the generalized gradient approximation （GGA） have been used to study the adsorption of CO molecule on the Cu2O（111） oxygen-vacancy surface. Calculations indicate that the C-O bond is weakened upon adsorption compared with that over perfect surface. In addition, with the density increase of the defective sites, the adsorption energies of the defect-CO configuration increase whereas the C-O bond nearly remains constant. 展开更多
关键词 Cu2O（111） first-principles calculations oxygen vacancy adsorption carbon monoxide
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Synthesis and Absorption Properties of Leaf-like Nd2Cu2O4+δ via a Coordination Complex Method with [NdCu(3,4-pdc)2(OAc)(H2O)5]·6.5H2O Precursor 认领 引用
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作者 ZHAO Yao YOU Jun-Hua +1 位作者 LV Wen-Quan FANG Ming 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2020年第4期737-746,共10页
Nd2Cu2O4+δnanosheets were synthesized via coordination complex method(CCM)by using[NdCu(3,4-pdc)2(OAc)(H2O)5]·6.5H2O(1,3,4-pdc=3,4-pyridinedicarboxylic acid)as the precursor.Compared to the particles prepared by... Nd2Cu2O4+δnanosheets were synthesized via coordination complex method(CCM)by using[NdCu(3,4-pdc)2(OAc)(H2O)5]·6.5H2O(1,3,4-pdc=3,4-pyridinedicarboxylic acid)as the precursor.Compared to the particles prepared by SSM(simple solution method),Nd2Cu2O4+δprepared by CCM showed leaf-like morphology composed of nanosheets with an average thickness of 50~80 nm and a BET surface area up to 17.9 m^2/g.The Nd2Cu2O4+δsamples exhibit selective adsorption towards malachite green(MG)with significant Qm(maximum adsorption capacity)values reaching up 1.55 g/g at room temperature,and the thermodynamic parameters of adsorption process were obtained.In addition,the properties of selective adsorption of the prepared samples were investigated by temperature change tests. 展开更多
关键词 Nd2Cu2O4+δ coordination-complex method simple solution method selective adsorption malachite green
Pt-RGO-Cu_2O/TiO_2催化剂的制备及光催化制氢活性 认领 引用
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作者 涂盛辉 戴策 +2 位作者 胡亚平 王犇 杜军 《南昌大学学报（工科版）》 CAS 2016年第4期307-312,共6页
采用化学沉积法和溶剂热法制备了RGO-Cu_2O/TiO_2复合光催化剂。通过扫描电子显微镜(SEM)、X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、紫外-可见漫反射光谱(DRS)表征复合催化剂的微观形貌、结构和光学特性。以H2Pt Cl6为无机前驱体... 采用化学沉积法和溶剂热法制备了RGO-Cu_2O/TiO_2复合光催化剂。通过扫描电子显微镜(SEM)、X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、紫外-可见漫反射光谱(DRS)表征复合催化剂的微观形貌、结构和光学特性。以H2Pt Cl6为无机前驱体对其进行Pt负载,研究了不同石墨烯含量对制氢活性的影响及不同光源下的制氢活性。结果表明:该复合催化剂表现出较好的光催化制氢活性,其中石墨烯的质量分数为0.5%,氢气的产生量最高。 展开更多
关键词 RGO-Cu2O/TiO2复合光催化剂 化学沉积法 溶剂热法 光催化 制氢
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湿化学法制备Cu2O/Cu空心球异质结光催化剂 认领 引用
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作者 贾相华 张辉霞 +1 位作者 刘艳凤 左桂鸿 《无机材料学报》 SCIE EI CAS CSCD 北大核心 2025年第4期397-404,共8页
窄带隙半导体作为可见光光催化剂,可以有效地将太阳能转化为化学能,在缓解能源短缺和环境污染方面具有潜在的应用前景。以氯化铜(CuCl2·H2O)为前驱体,盐酸羟胺(H3NO·HCl)和硼氢化钠(NaBH4)为还原剂,采用一锅无模... 窄带隙半导体作为可见光光催化剂,可以有效地将太阳能转化为化学能,在缓解能源短缺和环境污染方面具有潜在的应用前景。以氯化铜(CuCl2·H2O)为前驱体,盐酸羟胺(H3NO·HCl)和硼氢化钠(NaBH4)为还原剂,采用一锅无模板湿化学还原法制备Cu2O/Cu空心球异质结光催化剂。采用不同表征手段对样品形貌、晶体结构、组成、比表面积和光学性质进行分析。加入NaBH4使Cu2O/Cu形貌从中空截角八面体逐渐演化为中空纳米球。通过改变NaBH4加入量可以控制Cu2O表面Cu层厚度。NaBH4直接还原Cu2O使Cu2O和Cu界面紧密结合,这有利于载流子分离和传输,Cu的表面等离子体共振(SPR)效应使Cu2O/Cu对可见光的吸收能力增强,因此Cu2O/Cu对甲基橙(MO)和无色恩诺沙星(ENR)均表现出良好的光催化活性。连续循环使用5次,Cu2O/Cu对MO的降解率影响不大。捕获实验表明·O2-和空穴是降解MO过程中主要的活性物质。Cu2O/Cu的良好光催化活性归因于Cu2O和Cu的协同作用。本研究为异质结光催化剂的制备提供了一种策略。 展开更多
关键词 Cu2O/Cu异质结 纳米空心球 光催化 Cu层厚度
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