Enhanced Solar Water Splitting by Swift Charge Separation in Au/FeOOH Sandwiched Single-Crystalline Fe2O3 Nanoflake Photoelectrodes | |
Department | ERC国家工程研究中心 |
Wang L(王蕾)1; Nhat Truong Nguyen2; Zhang YJ(张亚军)1; Bi YP(毕迎普)1; Patrik Schmuki2,3; Bi YP(毕迎普) | |
The second department | osso国家重点实验室 |
2017 | |
Source Publication | ChemSusChem |
ISSN | 1864-5631 |
Volume | 10Issue:13Pages:2720-2727 |
Abstract | In this work, single crystalline -Fe2O3 nanoflakes (NFs) are formed in a highly dense array by Au seeding of a Fe substrate by a thermal oxidation technique. The NFs are conformally decorated with a thin FeOOH cocatalyst layer. Photoelectrochemical (PEC) measurements show that this photoanode, incorporating -Fe2O3/FeOOH NFs rooted on the Au/Fe structure, exhibits significantly enhanced PEC water oxidation performance compared to the plain -Fe2O3 nanostructure on the Fe substrate. The -Fe2O3/FeOOH NFs on Au/Fe photoanode yields a photocurrent density of 3.1 mA cm−2 at 1.5 VRHE, and a remarkably low onset potential of 0.5–0.6 VRHE in 1 m KOH under AM 1.5G (100 mW cm−2) simulated sunlight illumination. The enhancement in PEC performance can be attributed to a synergistic effect of the FeOOH top decoration and the Au underlayer, whereby FeOOH facilitates hole transfer at the interface of electrode/electrolyte and the Au layer provides a sink for the electron transport to the back contact. This results in a drastically improved charge-separation efficiency in the single crystalline -Fe2O3 NF photoanode. |
Keyword | Electrocatalysis Gold Hematite Photoelectrodes Water Splitting |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1002/cssc.201700522 |
Funding Organization | the National Natural Science Foundation of China (21622310;21573264;21633013) |
Indexed By | SCI |
If | 7.226 |
Language | 英语 |
Funding Project | 能源与环境纳米催化材料研究组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/22103 |
Collection | 精细石油化工中间体国家工程研究中心(ERC) 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Patrik Schmuki; Bi YP(毕迎普) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Natl Engn Res Ctr Fine Petrochem Intermediates, State Key Lab Oxo Synth & Select Oxidat, 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 |
Recommended Citation GB/T 7714 | Wang L,Nhat Truong Nguyen,Zhang YJ,et al. Enhanced Solar Water Splitting by Swift Charge Separation in Au/FeOOH Sandwiched Single-Crystalline Fe2O3 Nanoflake Photoelectrodes[J]. ChemSusChem,2017,10(13):2720-2727. |
APA | Wang L,Nhat Truong Nguyen,Zhang YJ,Bi YP,Patrik Schmuki,&毕迎普.(2017).Enhanced Solar Water Splitting by Swift Charge Separation in Au/FeOOH Sandwiched Single-Crystalline Fe2O3 Nanoflake Photoelectrodes.ChemSusChem,10(13),2720-2727. |
MLA | Wang L,et al."Enhanced Solar Water Splitting by Swift Charge Separation in Au/FeOOH Sandwiched Single-Crystalline Fe2O3 Nanoflake Photoelectrodes".ChemSusChem 10.13(2017):2720-2727. |
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LZ01030345.pdf(1757KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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