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Preparation of TiO_2/Ti mesh photoelectrode and properties 认领 引用 被引量：6
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作者 LIUHui-ling LIXuan-dong +2 位作者 ZHOUDing LIXiang-zhong YUEPing-tao 《Journal of Environmental Sciences》 SCIE EI CAS 2003年第3期311-314,共4页
An innovative photoelectrode, TiO_2/Ti mesh electrode, was prepared by anodisation. In anodisation, 0.5 mol/L H_2SO_4 was used as electrolytic solution, the current had been constantly 1A from the beginning of the oxi... An innovative photoelectrode, TiO_2/Ti mesh electrode, was prepared by anodisation. In anodisation, 0.5 mol/L H_2SO_4 was used as electrolytic solution, the current had been constantly 1A from the beginning of the oxidation until reaching a designed voltage. Results showed that the photocatalytic activity of electrode was better when the designed voltage was 160 V. The morphology and the crystalline texture of the TiO_2 film on mesh electrode were examined by scanning electronic microscopy and Raman spectroscopy respectively. The examination results indicated that the structure and properties of the film depended on anodisation rate, and the anatase was the dominant component under the controlled experimental conditions. Degradation of Rhodamine B in photocatalytic (PC) and photoelectrocatalytic (PEC) reaction was investigated. 展开更多
关键词 mesh photoelectrode anodisation TiO_2 photoelectrocatalytic oxidation rhodamine B
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Nanocarbon-Enhanced 2D Photoelectrodes:A New Paradigm in Photoelectrochemical Water Splitting 认领 引用 被引量：9
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作者 Jun Ke Fan He +9 位作者 Hui Wu Siliu Lyu Jie Liu Bin Yang Zhongjian Li Qinghua Zhang Jian Chen Lecheng Lei Yang Hou Kostya Ostrikov 《Nano-Micro Letters》 SCIE EI CAS CSCD 2021年第2期45-73,共29页
Solar-driven photoelectrochemical(PEC)water splitting systems are highly promising for converting solar energy into clean and sustainable chemical energy.In such PEC systems,an integrated photoelectrode incorporates a... Solar-driven photoelectrochemical(PEC)water splitting systems are highly promising for converting solar energy into clean and sustainable chemical energy.In such PEC systems,an integrated photoelectrode incorporates a light harvester for absorbing solar energy,an interlayer for transporting photogenerated charge carriers,and a co-catalyst for triggering redox reactions.Thus,understanding the correlations between the intrinsic structural properties and functions of the photoelectrodes is crucial.Here we critically examine various 2D layered photoanodes/photocathodes,including graphitic carbon nitrides,transition metal dichalcogenides,layered double hydroxides,layered bismuth oxyhalide nanosheets,and MXenes,combined with advanced nanocarbons(carbon dots,carbon nanotubes,graphene,and graphdiyne)as co-catalysts to assemble integrated photoelectrodes for oxygen evolution/hydrogen evolution reactions.The fundamental principles of PEC water splitting and physicochemical properties of photoelectrodes and the associated catalytic reactions are analyzed.Elaborate strategies for the assembly of 2D photoelectrodes with nanocarbons to enhance the PEC performances are introduced.The mechanisms of interplay of 2D photoelectrodes and nanocarbon co-catalysts are further discussed.The challenges and opportunities in the field are identified to guide future research for maximizing the conversion efficiency of PEC water splitting. 展开更多
关键词 Advanced nanocarbons Co-catalysts 2D layered structure Integrated photoelectrodes Photoelectrochemical water splitting
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3D Black TiO2NTs电极制备及光电催化降解有机废水研究 认领 引用
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作者 高春莉 戴凯 +4 位作者 余欣雨 汪志成 陈佳宇 王嘉琪 徐迈 《现代化工》 CAS CSCD 北大核心 2026年第3期98-103,共6页
以钛网为基底,采用两步法(阳极氧化和电还原)成功制备了三维黑色TiO2纳米管(3D Black TiO2NTs)光电极。通过扫描电子显微镜(SEM)和X射线衍射(XRD)分别对3D Black TiO2NTs光电极的表面形貌和结构进行了表征。结果表明,Black TiO... 以钛网为基底,采用两步法(阳极氧化和电还原)成功制备了三维黑色TiO2纳米管(3D Black TiO2NTs)光电极。通过扫描电子显微镜(SEM)和X射线衍射(XRD)分别对3D Black TiO2NTs光电极的表面形貌和结构进行了表征。结果表明,Black TiO2NTs管径约为130 nm,管壁厚度为10 nm。通过线性伏安扫描(LSV)和电化学交流阻抗(EIS)对光电极的光电催化电化学活性进行了研究。研究发现在TiO2NTs晶格引入Ti3+之后,可以提高光生载流子的产生与分离速度,从而使得光电流密度显著提高。同时,Ti3+自掺杂也有效增强了材料的电荷分离与传输性能,从而大大提高了电极的光电催化活性。将该光电极应用于光电催化降解亚甲基蓝(MB),降解120 min后MB完全降解,总有机碳(TOC)降解率高达86%。研究表明,3D Black TiO2NTs光电极在有机废水处理中具有广阔的应用前景。 展开更多
关键词 光电极 3D Black TiO2NTs 光电催化 光降解 有机废水
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Kinetics of photoelectrocatalytic degradation of endocrine disrupting chemicals using sulfur-doped TiO_2 /Ti photoelectrodes 认领 引用
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作者 孙海健 金玉苹 +3 位作者 王斌 刘惠玲 陈超 韩蕾 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2010年第4期516-520,共5页
In this study,sulfur-doped TiO2 /Ti photoelectrodes were prepared by anodization. The morphology, crystalline structure,composition of sulfur-doped TiO2 /Ti film and light absorption property were examined by SEM,XRD,... In this study,sulfur-doped TiO2 /Ti photoelectrodes were prepared by anodization. The morphology, crystalline structure,composition of sulfur-doped TiO2 /Ti film and light absorption property were examined by SEM,XRD,XRF,XPS and UV/VIS respectively. Dimethyl phthalate( DMP) ,one kind of environmental disrupting chemicals( EDCs) ,was degraded by the optimized photoelectrodes. Power of xenon light,initial concentration of DMP,photoelectrocatalytic( PEC) area of photoelectrode and bias were investigated in the study on kinetics of PEC degradation of DMP. Hence,this study concluded that the optimum conditions were power of xenon light 150 W,initial concentration of DMP 1 mg/L,PEC area of sulfur-doped TiO2 /Ti photoelectrode 10 cm2,bias 1. 3 V in the PEC reaction system. 展开更多
关键词 sulfur-doped TiO2 /Ti photoelectrodes anodization photoelectrocatalytic ( PEC) degradation dimethyl phthalate( DMP) kinetics
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TiO2 Nanoparticles Produced by Electric-Discharge-Nanofluid-Process as Photoelectrode of DSSC 认领 引用
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作者 陈希立 苏宏庭 +2 位作者 张合 卓清松 冯啸儒 《Chinese Journal of Chemical Physics》 SCIE EI CAS 2010年第2期231-236,I0002,共6页
Self-made TiO2 nanoparticles were used as photoelectrode material of dye sensitized solar cell. The TiO2 thin film coats through spreading nanoparticles evenly onto the ITO glass via self-made spin-heat platform, and ... Self-made TiO2 nanoparticles were used as photoelectrode material of dye sensitized solar cell. The TiO2 thin film coats through spreading nanoparticles evenly onto the ITO glass via self-made spin-heat platform, and then TiO2 thin film is soaked in the dye N-719 more than 12 h to prepare the photoelectrode device. The TiO2 nanoparticles produced by electric-discharge-nanofluid-process have premium anatase crystal property, and its diameter can be controlled within a range of 20-50 nm. The surface energy zeta potential of nanofluid is from -22 mV to -28.8 mV, it is a stable particle suspension in the deionized water. A trace of surfactant Triton X-100 put upon the surface of ITO glass can produce a uniform and dense TiO2 thin film and heating up the spin platform to 200 oC is able to eliminate mixed surfac-tant. Self-made TiO2 film presents excellent dye absorption performance and even doesn＇t need heat treatment procedure to enhance essential property. Results of energy analysis show the thicker film structure will increase the short-circuit current density that causes higher conversion efficiency. But, as the film structure is large and thick, both the open-circuit voltage and fill factor will decline gradually to lead bad efficiency of dye-sensitized solar cell. 展开更多
关键词 Electric-discharge-nanofluid-process Photoelectrode TiO2 film Anatase Energy conversion efficiency
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Physicochemical Characterization of Photoelectrodes of Ti/TiO2Prepared by Thermal Oxidation of Titanium 认领 引用
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作者 Marcos M. Pedemonte Alberto L. Capparelli 《Energy and Power Engineering》 2015年第9期403-411,共9页
The preparation and study of supported TiO2 for photocatalytic application in solar cell devices is a relevant research field. Thin films of TiO2 prepared on Ti by thermal oxidation in a wide range of temperatures (45... The preparation and study of supported TiO2 for photocatalytic application in solar cell devices is a relevant research field. Thin films of TiO2 prepared on Ti by thermal oxidation in a wide range of temperatures (450&deg;C - 900&deg;C) were characterized by electrochemical impedance spectroscopy, potentiometry and amperometry. This material presents photoelectrochemical activity, which depends dramatically of the oxidation temperature and the exposition time at the studied temperatures. The flatband potential as well as the donor density and the resistance to the charge transfer were measured. All these parameters are temperature dependent, and the optimal values are observed on the photoelectrodes prepared at 750&deg;C. This result is consistent with the photochemical response reported in the literature for thin films of Ti/TiO2 prepared under similar conditions. 展开更多
关键词 Ti/TiO2 Photoelectrodes Flatband Potential Mott-Schottky and Nyquist Diagrams
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Enhanced photocatalytic degradation of methyl orange by CdS quantum dots sensitized platelike WO_3 photoelectrodes 认领 引用 被引量：2
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作者 文瑾 刘灿军 +2 位作者 杜勇 胡传跃 田修营 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第12期4551-4559,共9页
CdS quantum dots sensitized platelike WO_3 photoelectrodes were successfully synthesized by a facile hydrothermal method and a modified chemical bath deposition(CBD) technique.To further improve the stability of the p... CdS quantum dots sensitized platelike WO_3 photoelectrodes were successfully synthesized by a facile hydrothermal method and a modified chemical bath deposition(CBD) technique.To further improve the stability of the photoelectrodes in alkaline environment,the platelike WO_3 films were treated with TiCl_4 to form a nano-TiO_2 buffer layer on the WO_3 plate surface before loading CdSQDs.The resulting electrodes were characterized by using XRD,SEM,HR-TEM and UV-vis spectrum.The photocatalytic activity of the resulting electrodes was investigated by degradation of methyl orange(MO) in aqueous solution.The photoelectrochemical(PEC) property of the resulting electrodes was also characterized by the linear sweep voltammetry.The results of both the degradation of MO and photocurrent tests indicated that the as-prepared CdSQDs sensitized WO_3 platelike photoelectrodes exhibit a significant improvement in photocatalytic degradation and PEC activity under visible light irradiation,compared with unsupported CdSQDs electrodes.Significantly,coating the WO_3 plates with nano-TiO_2 obviously facilitate the charge separation and retards the charge-pair recombination,and results in a highest activity for QDsCdS/TiO_2/WO_3 photoelectrodes. 展开更多
关键词 photocatalytic degradation cadmium sulfide platelike WO3 photoelectrode Nano-TiO2 buffer layer
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SiO_2掺杂对Ru-TiO_2催化剂的结构及其对丁二酸湿式氧化活性的影响 认领 引用 被引量：5
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作者 张世鸿 涂学炎 +1 位作者 王伟 李自弘 《环境化学》 CAS 北大核心 2004年第6期626-630,共5页
在TiO2粉末中掺杂SiO2,制备0—20%的SiO2TiO2载体.利用浸渍法在载体上负载Ru,制备Ru/SiO2TiO2催化剂.结果表明,催化剂的晶相以锐钛矿为主,晶粒尺寸为30—50nm.掺杂的SiO2主要为无定型,以5—15nm分散于催化剂中,比表面积随SiO2掺杂量的... 在TiO2粉末中掺杂SiO2,制备0—20%的SiO2TiO2载体.利用浸渍法在载体上负载Ru,制备Ru/SiO2TiO2催化剂.结果表明,催化剂的晶相以锐钛矿为主,晶粒尺寸为30—50nm.掺杂的SiO2主要为无定型,以5—15nm分散于催化剂中,比表面积随SiO2掺杂量的增加显著增大,但对TiO2的晶体结构无明显影响,也未形成Si—O—Ti键.Ru因粒径细化及含量过低未产生衍射峰.在300ml间歇式反应釜中,反应温度210—270℃,初始氧分压085MPa条件下,对丁二酸(74g·l-1,COD=7000mg·l-1)的催化湿式氧化结果表明,SiO2掺杂量对COD的去除率有显著影响,掺杂10%SiO2的催化剂对COD的去除率最高.在连续十次运行中,COD的去除率保持在85%左右,活性未见降低. 展开更多
关键词 SiO2 Ru-TiO2 催化剂 湿式氧化活性 COD 对丁二酸 水处理工艺 比表面积
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Ru-TiO_2光电极的研制与性能研究 认领 引用 被引量：2
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作者 王理明 姚秉华 裴亮 《分析科学学报》 CAS 北大核心 2010年第6期645-648,共4页
采用阳极氧化法制备Ru-TiO2光电极,通过紫外-可见漫反射吸收(UV-Vis-DRS)、X-射线衍射(XRD)和交流阻抗(EIS)对光电极的性能进行表征,探讨了氧化电压、煅烧温度、钌掺杂量的影响。结果表明:Ru掺杂后TiO2结晶更完全,光吸收强度明显提高。... 采用阳极氧化法制备Ru-TiO2光电极,通过紫外-可见漫反射吸收(UV-Vis-DRS)、X-射线衍射(XRD)和交流阻抗(EIS)对光电极的性能进行表征,探讨了氧化电压、煅烧温度、钌掺杂量的影响。结果表明:Ru掺杂后TiO2结晶更完全,光吸收强度明显提高。在HF电解液中,阳极氧化制备Ru-TiO2光电极的最佳条件为:氧化电压为20V,热处理温度600℃,钌掺杂量1%。不同条件Ru-TiO2光电极对甲基橙溶液进行脱色效果依次为:光电催化>光催化>电催化。 展开更多
关键词 Ru-TiO2光电极 阳极氧化 光电催化
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BiZnx/Si光电阴极的制备及其CO2还原性能研究 认领 引用 被引量：2
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作者 李成金 薛怡 +1 位作者 周晓霞 陈航榕 《无机材料学报》 SCIE EI CAS CSCD 北大核心 2022年第10期1093-1101,I0002-I0007,共9页
将CO2转化为高附加值的化学品是实现碳循环,缓解能源危机和环境问题的有效途径之一。金属与半导体复合电极,利用光电耦合技术为CO2转化提供了一种新思路。本研究通过电沉积的方法在碱刻蚀处理后的Si片上制备了双金属Bi、Zn共修饰... 将CO2转化为高附加值的化学品是实现碳循环,缓解能源危机和环境问题的有效途径之一。金属与半导体复合电极,利用光电耦合技术为CO2转化提供了一种新思路。本研究通过电沉积的方法在碱刻蚀处理后的Si片上制备了双金属Bi、Zn共修饰的Si基光电阴极(BiZnx/Si),用于CO2的光电催化还原。研究表明,引入金属Bi和Zn能够改善光的吸收性能,降低电化学阻抗,提高电化学活性比表面积(ECSA)。其中,BiZn2/Si最优的光电极电化学比表面积可达0.15 mF·cm-2。除此之外,研究发现双金属共同作用有助于增强电极对中间体*OCHO的吸附作用,在-0.8 V(vs.RHE)电势下,最优的光电阴极BiZn2/Si生成HCOOH的法拉第效率高达96.1%。更重要的是,光电阴极BiZn2/Si的光电流强度在10 h内维持-13 mA·cm-2,表现出良好的性能稳定性。 展开更多
关键词 CO2还原 HCOOH 光电极 BiZnx
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WO3@Fe2O3 Core-Shell Heterojunction Photoanodes for Efficient Photoelectrochemical Water Splitting 认领 引用 被引量：1
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作者 Guobing Mao Heng Wu +4 位作者 Tianyang Qiu Dingjie Bao Longjie Lai Wenguang Tu Qi Liu 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2022年第8期25-30,共6页
Photoelectrochemical(PEC) hydrogen production from water splitting is a green technology to convert solar energy into renewable hydrogen fuel. The construction of host/guest architecture in semiconductor photoanodes h... Photoelectrochemical(PEC) hydrogen production from water splitting is a green technology to convert solar energy into renewable hydrogen fuel. The construction of host/guest architecture in semiconductor photoanodes has been proven to be an effective strategy to improve solar-to-fuel conversion efficiency. In this study, WO3@Fe2O3 core-shell nanoarray heterojunction photoanodes are synthesized from the in-situ decomposition of WO3@Prussian blue(WO3@PB) and then used as host/guest photoanodes for photoelectrochemical water splitting, during which Fe2O3 serves as guest material to absorb visible solar light and WO3 can act as host scaffolds to collect electrons at the contact. The prepared WO3@Fe2O3 shows the enhanced photocurrent density of 1.26 m A cm-2(under visible light) at 1.23 V. vs RHE and a superior IPEC of 24.4% at 350 nm, which is higher than that of WO3@PB and pure WO3(0.43 m A/cm-2 and 16.3%, 0.18 m A/cm-2 and 11.5%) respectively, owing to the efficient light-harvesting from Fe2O3 and the enhanced electron-hole pairs separation from the formation of type-Ⅱ heterojunctions, and the direct and ordered charge transport channels from the one-dimensional(1D) WO3 nanoarray nanostructures. Therefore, this work provides an alternative insight into the construction of sustainable and cost-effective photoanodes to enhance the efficiency of the solar-driven water splitting. 展开更多
关键词 host/guest photoelectrodes WO3 a-Fe2O3 core-shell nanostructures one-dimensional nanoarray
Bi2MoO6/TiO2纳米棒阵列异质结构的制备及光电化学性能研究 认领 引用 被引量：1
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作者 周小桔 蒋鑫 +1 位作者 胡正龙 任一鸣 《电子元件与材料》 CAS CSCD 北大核心 2022年第9期923-932,共10页
为提高TiO2光电极的光电化学性能,采用水热/溶剂热两步法在TiO2纳米棒阵列上合成BiMoO/TiO2异质结构。通过XRD、SEM、TEM、HRTEM、XPS、UV-Vis、PL对样品的物相、形貌、微结构、元素价态和光学性能进行分析,结果表明成功制备了... 为提高TiO2光电极的光电化学性能,采用水热/溶剂热两步法在TiO2纳米棒阵列上合成BiMoO/TiO2异质结构。通过XRD、SEM、TEM、HRTEM、XPS、UV-Vis、PL对样品的物相、形貌、微结构、元素价态和光学性能进行分析,结果表明成功制备了BiMoO/TiO2纳米棒阵列异质结构,BiMoO修饰TiO2拓宽了光谱响应范围。电化学工作站测试表明,BiMoO与TiO2形成异质结构有利于光生载流子的有效分离,获得了增强的光电化学性能。BiMoO/TiO2异质结构(样品BMT-3)具有最大的光电流密度为2.589 mA/cm2,约为TiO2(0.143 mA/cm2)的18倍,具有最大的光转换效率0.287%和最小的电荷转移电阻。能带结构表明,TiO2的导带和价带电位比BiMoO的导带和价带更正。TiO2和BiMoO形成的type Ⅱ型能带结构与可见光的扩展吸收之间的协同作用是光电化学性能提升的内在机理。 展开更多
关键词 Bi2MoO6/TiO2纳米棒阵列 光电极 typeⅡ型异质结构 光电化学性能
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g-C3N4modified MoS2photoelectrodes for stable photo-assisted zinc-ion capacitors 认领 引用
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作者 Changhua Mi Xin Sun +4 位作者 Xiaojing Yin Jiahao Yang Yanlong Lv Xiaojun Lv Meicheng Li 《Science China Materials》 SCIE EI CAS CSCD 2025年第4期1082-1090,共9页
Photo-assisted capacitors are attractive devices for solar energy conversion and storage,while the behavior of photoelectrodes limits their performance.In this work,MoS2photoelectrodes were modified by g-C3N4... Photo-assisted capacitors are attractive devices for solar energy conversion and storage,while the behavior of photoelectrodes limits their performance.In this work,MoS2photoelectrodes were modified by g-C3N4,exhibiting enhanced photo-rechargeable properties.Our results show that the introduction of g-C3N4increases the surface area of MoS2photoelectrodes and promotes the transport of charge carriers,which can boost the specific capacity and cycle stability of capacitors.The as-prepared zinc-ion capacitors with g-C3N4/MoS2photoelectrodes show a specific capacity of 380.93 F/g at 1 A/g under AM 1.5 G illumination.Remarkably,after 3000 cycles at 10 A/g,the capacity of the photo-assisted zinc-ion capacitor retains above 99%. 展开更多
关键词 g-C3N4/MoS2heterojunction photo-assisted capacitor zinc-ion capacitor photogenerated carriers photoelectrode
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Synthesis of nano-TiO2 assisted by diethylene glycol for use in high efficiency dye-sensitized solar cells 认领 引用 被引量：1
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作者 Lin Liu Xiang-Mei Yu +2 位作者 Bao Zhang Shu-Xian Meng Ya-Qing Feng 《Chinese Chemical Letters》 SCIE CAS CSCD 2017年第4期765-770,共6页
The performance of dye-sensitized solar cells（DSSCs） consisting of anatase TiO_2 nanoparticles that were synthesized via a hydrothermal method was studied.The synthesized TiO_2 nanoparticles were characterized by X-... The performance of dye-sensitized solar cells（DSSCs） consisting of anatase TiO_2 nanoparticles that were synthesized via a hydrothermal method was studied.The synthesized TiO_2 nanoparticles were characterized by X-ray diffraction（XRD）,nitrogen sorption analysis,scanning electron microscopy（SEM）,high resolution transmission electron microscopy（HRTEM）,and UV-vis spectroscopy.Then the J-Vcurve,electrochemical impedance spectroscopy（EIS）,and open-circuit voltage decay（OCVD） measurement were applied to evaluate the photovoltaic performance of DSSCs.Compared with the commercial TiO_2nanoparticles（P25）,the synthesized-TiO_2 nanoparticles showed better performance.By adding diethylene glycol（DEG） before the hydrothermal process,the synthesized TiO_2 nanoparticles（hereafter referred to as TiO_2-DEG particles） shows narrower size distribution,larger specific surface area,higher crystallinity,and less surface defects than TiO_2（DEG free） particles.The analysis of photovoltaic properties of DSSCs based on TiO_2-DEG particles showed that the recombination of electron-hole pairs was decreased and the trapping of carries in grain boundaries restrained.It was believed that the photoelectrode fabricated with the as-prepared TiO_2 nanoparticles improved the loading amount of dye sensitizers（N719）.and enhanced the photocurrent of the DSSCs.As a result,the TiO_2-DEG particle based cells achieved a photo-to-electricity conversion efficiency（η） of 7.90%,which is higher than 7.53%for the cell based on TiO2（DEG free） and 6.59%for the one fabricated with P25. 展开更多
关键词 Hydrothermal TiO2 Diethylene glycol Photoelectrode Dye-sensitized solar cells
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粒子转移法制备CuFeO2光阴极用于光电化学水分解 认领 引用
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作者 孙睿远 秦伟龙 周扬 《化学试剂》 CAS 2024年第11期74-80,共7页
光电化学(PEC)水分解是一种利用太阳能制氢的先进技术,被广泛认为是与目前工业上其他制氢技术比较更具有潜力和环境友好性的方法。粒子转移法制备的颗粒光电极因其优越的光电化学性能表现,被认为是一种太阳能分解水器件光电极的有效制... 光电化学(PEC)水分解是一种利用太阳能制氢的先进技术,被广泛认为是与目前工业上其他制氢技术比较更具有潜力和环境友好性的方法。粒子转移法制备的颗粒光电极因其优越的光电化学性能表现,被认为是一种太阳能分解水器件光电极的有效制备方法之一。通过探索制备稳定和高效的颗粒型光阴极的研究,阐述光阴极在光电化学分解水中的关键问题及其在实现太阳能水分解中的潜在应用。通过采用粒子转移法成功制备了颗粒型CuFeO2光阴极,并将其用于太阳能水还原反应。实验结果表明,在酸性缓冲液测试条件下,CuFeO2光阴极表现出较高的光电流密度和稳定性。此外,将Pt作为助催化剂负载在CuFeO2光阴极表面,光阴极的光电流密度提高近40倍。 展开更多
关键词 光电化学 粒子转移法 光阴极 CuFeO2 颗粒光电极 助催化剂
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Visible Light Photoelectrocatalytic Degradation of Rhodamine B Using Ti/TiO2-NiO Photoanode 认领 引用 被引量：1
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作者 Sayekti Wahyuningsih Candra Purnawan +4 位作者 Teguh Endah Saraswati Edi Pramono Ari Handono Ramelan Setyo Pramono Ari Wisnugroho 《Journal of Environmental Protection》 2014年第17期1630-1640,共11页
The method of Ti/TiO2-NiO photoelectrode prepared by using sol-gel method continued by calcination process was introduced. The prepared TiO2-NiO film was observed with XRD and TEM. The anatase-rutile TiO2 was mainly o... The method of Ti/TiO2-NiO photoelectrode prepared by using sol-gel method continued by calcination process was introduced. The prepared TiO2-NiO film was observed with XRD and TEM. The anatase-rutile TiO2 was mainly on the prepared TiO2-NiO composite surface electrode. In addition to NiO, the composite also formed NiTiO3 that increased with increasing calcination temperature. Photoelectrocatalytic degradation of Rhodamine B (RB) using this electrode was investigated, and anodic potential and pH were optimized. RB degradation was investigated under different conditions, and it showed that photoelectrocatalytic degradation could achieve efficient and complete mineralization of organic pollutant. Through comparison of the photoelectrocatalytic oxidation using the Ti/TiO2-NiO electrode operated by single photoanode with the Ti/TiO2-NiO electrode operated by several photoanode, it was found that the photoelectrocatalytic efficiency of that by series photoanodes was higher. Additionally, photoelectrocatalytic system was performed at the several different photoelectrodes, which verified the higher photocatalytic activity compared with the single photoelectrode. 展开更多
关键词 Ti/TiO2-NiO Photoelectrode Visible Light Photoelectrocatalysis Degradation Rhodamine B
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Effect of Tantalum Doping on TiO2Nanotube Arrays for Water-Splitting 认领 引用
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作者 Alfonso Pozio 《Modern Research in Catalysis》 2015年第1期1-12,共12页
This work is intended to define a new possible methodology for TiO2 doping through the use of electrochemical deposition of tantalum directly on the titanium nanotubes obtained by a previous galvanostatic anodization ... This work is intended to define a new possible methodology for TiO2 doping through the use of electrochemical deposition of tantalum directly on the titanium nanotubes obtained by a previous galvanostatic anodization treatment in an ethylene glycol solution. This method does not seem to cause any influence on the nanotube structure, showing final products with news and interesting features with respect to the unmodified sample. Together with a decrease in the band gap and flat band potential of the TiO2 nanotubes, the tantalum doped specimen reports an increase of the photo conversion efficiency under UV light. 展开更多
关键词 Nanotube TiO2 Water Photoelectrolysis Photoelectrode OER
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A review on metal-organic frameworks for photoelectrocatalytic applications 认领 引用 被引量：4
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作者 Feihu Mu Benlin Dai +3 位作者 Wei Zhao Lili Zhang Jiming Xu Xujing Guo 《Chinese Chemical Letters》 SCIE CAS CSCD 2020年第7期1773-1781,共9页
Semiconductor-based photoelectrocatalytic processes have attracted considerable research interest for solar energy collection and storage.Photoelectrocatalysis is a heterogeneous photocatalytic process in which a bias... Semiconductor-based photoelectrocatalytic processes have attracted considerable research interest for solar energy collection and storage.Photoelectrocatalysis is a heterogeneous photocatalytic process in which a bias potential is applied to a photoelectrode,and thus the photoelectrocatalytic performance is closely related to the photoelectrode prepared by semiconductors.Among various semiconductors,metal-organic frameworks(MOFs)have attracted more and more attention because of their unique properties such as optical properties and adjustable structure.Herein,a comprehensive review on different MOFs(Ti-based,Zn-based,Co-based,Fe-based,Cu-based,and mixed metal-based MOFs)for heterogeneous photoelectrocatalysis is carried out and,in particular,the application of this technique for CO2 conversion and water splitting is discussed.In addition,the challenges and development prospects of MOFs in photoelectrocatalysis are also presented. 展开更多
关键词 MOFs Photoelectrocatalysis Photoelectrode CO2 conversion Water splitting
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Current trending and beyond for solar-driven water splitting reaction on WO3photoanodes 认领 引用 被引量：5
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作者 Magno B.Costa Moisés A.de Araújo +2 位作者 Marcos V.de Lima Tinoco Juliana F.de Brito Lucia H.Mascaro 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2022年第10期88-113,I0003,共26页
This review shows the importance of WO3photoanode as a potentially low-cost,efficient,stable,and photoactive material for light-driven water splitting.For such,this manuscript aims to review the most recent publica... This review shows the importance of WO3photoanode as a potentially low-cost,efficient,stable,and photoactive material for light-driven water splitting.For such,this manuscript aims to review the most recent publications regarding the strategies to improve the phoelectroactivity of WO3films for water oxidation.In addition,this review aims to graphically highlight and discuss the general trendings of the photocurrent density response and stability test of the recent outstanding studies in the literature for photoelectrochemical water splitting application.The strategies covered in this review will not only concern the WO3morphology and crystal plane growth,but also the many arrangements possibilities to improve the WO3efficiency for water photoelectrooxidation,such as defect engineering based on oxygen vacancies,doping,decorations,and homo and heterojunctions.All these strategies are compared by the photocurrent density results and by the stability of these photocatalysts.The best results in this sense were observed in cases where the use of heterojunction was applied together with a desired morphology and crystal plane of the WO3photoanode.However,the modifications that caused a decrease in the photocurrent density reaching values that are even lower than the pure WO3were also discussed.In this way,this review intends to improve the knowledge about the synthesis and design of WO3photoanodes to further obtain an efficient photocatalyst to minimize the recombination losses or losses across the interfaces and improve the photoelectroactivity for water splitting in the large-scale application. 展开更多
关键词 Solar energy H2production N-type semiconductor Photoelectrode design Oxygen evolution reaction
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Effect of HF Treatment on the Photoelectrochemical Properties of a Hematite Thin Film Photoanode for Water Splitting 认领 引用 被引量：3
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作者 HU Yu-Xiang JIANG Chun-Xiang +4 位作者 FANG Liang ZHENG Fen-Gang DONG Wen SU Xiao-Dong SHEN Ming-Rong 《物理化学学报》 SCIE CAS CSCD 北大核心 2014年第6期1099-1106,共8页
The effects of HF treatment on the photoelectrochemical(PEC)properties of sol-gel prepared hematite(α-Fe2O3)thin films were investigated.Pores and interstices between the grains developed on the film surface as... The effects of HF treatment on the photoelectrochemical(PEC)properties of sol-gel prepared hematite(α-Fe2O3)thin films were investigated.Pores and interstices between the grains developed on the film surface as the HF etching time increased.The photocurrent density of theα-Fe2O3photoanode decreased within the first 5 min of etching,and then increased quickly as the etching time increased.At longer time than 15 min the photocurrent density deteriorated.Re-annealing the etched samples significantly enhanced the photocurrent density.Based on electrochemical impedance spectroscopy,Raman and X-ray photoelectron spectroscopies,we propose that two factors contribute to photocurrent density reversely:the porosity and the lowered crystal inity of theα-Fe2O3surface because of HF treatment.A schematic model was compiled to explain the enhanced PEC activities of the etched plus re-annealedα-Fe2O3photoanode.The PEC and water splitting measurements showed that the etched plus re-annealed photoanode is more stable than the as-prepared one. 展开更多
关键词 α-Fe2O3photoelectrode Surface treatment Photoelectrochemical property
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