Hematite Photoanodes: Synergetic Enhancement of Light Harvesting and Charge Management by Sandwiched with Fe2TiO5/Fe2O3/Pt Structures | |
Wang L(王蕾)1; Nhat Truong Nguyen2; Huang XJ(黄晓卷)1; Patrik Schmuki2,3; Bi YP(毕迎普)1; Bi YP(毕迎普) | |
刊名 | Advanced Functional Materials |
2017 | |
卷号 | 27期号:46页码:1703527(1-8) |
关键词 | Charge Separation Hematite Photoanodes Light Absorption Photoelectrochemical Water Splitting Pt Nanopillars |
ISSN号 | 1616-301X |
DOI | 10.1002/adfm.201703527 |
英文摘要 | Efficient charge separation and transport as well as high light absorption are key factors that determine the efficiency of photoelectrochemical (PEC) water splitting devices. Here, a PEC device consisting of a hematite nanoporous film deposited on Pt nanopillars, followed by the decoration with an Fe2TiO5 passivation layer, is designed and fabricated. This structure can largely improve the light absorption in the composite materials, and significantly enhance the water oxidation performance of hematite photoanodes. The Fe2TiO5 thin shell and Pt underlayer significantly improve the interfacial charge transfer while minimizing the hole‐migration length in Fe2O3 photoanodes, leading to a drastically increased photocurrent density. Specially, the Fe2TiO5/Fe2O3/Pt photoanode yields an excellent photoresponse for PEC water splitting reactions with 1.0 and 2.4 mA cm−2 obtained at 1.23 and 1.6 VRHE under AM 1.5G illumination in 1 m KOH. The resulting photocurrents are 2.5 times enhanced compared to a pristine Fe2O3 photoanode of the same geometry. These results demonstrate a synergistic charge transfer effect of Fe2TiO5 and Pt layers on hematite for the improvement of PEC water oxidation. |
学科主题 | 物理化学与绿色催化 |
资助项目 | 能源与环境纳米催化材料研究组;日常管理与大型仪器组 |
语种 | 英语 |
WOS记录号 | WOS:000417187200010 |
资助机构 | the National Science Foundation of China (21622310;21573264;21633013;21603247) |
内容类型 | 期刊论文 |
源URL | [http://ir.licp.ac.cn/handle/362003/23783] |
专题 | 兰州化学物理研究所_ERC国家工程研究中心 兰州化学物理研究所_OSSO国家重点实验室 |
通讯作者 | Patrik Schmuki; Bi YP(毕迎普) |
作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Natl Engn Res Ctr Fine Petrochem Intermediates, Lanzhou 730000, Peoples R China 2.Univ Erlangen Nurnberg, Dept Mat Sci & Engn, LKO WW4, Martensstr 7, D-91058 Erlangen, Germany 3.King Abdulaziz Univ, Dept Chem, Jeddah 80203, Saudi Arabia |
推荐引用方式 GB/T 7714 | Wang L,Nhat Truong Nguyen,Huang XJ,et al. Hematite Photoanodes: Synergetic Enhancement of Light Harvesting and Charge Management by Sandwiched with Fe2TiO5/Fe2O3/Pt Structures[J]. Advanced Functional Materials,2017,27(46):1703527(1-8). |
APA | Wang L,Nhat Truong Nguyen,Huang XJ,Patrik Schmuki,Bi YP,&毕迎普.(2017).Hematite Photoanodes: Synergetic Enhancement of Light Harvesting and Charge Management by Sandwiched with Fe2TiO5/Fe2O3/Pt Structures.Advanced Functional Materials,27(46),1703527(1-8). |
MLA | Wang L,et al."Hematite Photoanodes: Synergetic Enhancement of Light Harvesting and Charge Management by Sandwiched with Fe2TiO5/Fe2O3/Pt Structures".Advanced Functional Materials 27.46(2017):1703527(1-8). |
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