A Facile Surface Passivation of Hematite Photoanodes with Iron Titanate Cocatalyst for Enhanced Water Splitting | |
Department | OSSO国家重点实验室 |
Wang, Lei1,2; Nhat Truong Nguyen1; Patrik Schmuki1,3 | |
The second department | erc国家工程研究中心 |
2016 | |
Source Publication | ChemSusChem |
ISSN | 1864-5631 |
Volume | 9Issue:16Pages:2048-2053 |
Abstract | The surface modification of semiconductor photoelectrodes with passivation overlayers has attracted great attention as an effective strategy to improve the charge separation and charge transfer processes across the semiconductor-electrolyte interface. In this work, a thin Fe2TiO5 layer was decorated on nanostructured hematite nanoflake and nanocoral photoanodes (by thermal oxidation of iron foils) by a facile water-based solution method. Photoelectrochemical measurements show that the Fe2O3/Fe2TiO5 heterostructure exhibits an obvious enhancement in photoelectrochemical water oxidation performance compared to the pristine hematite. For example, at 1.23 V versus the reversible hydrogen electrode (VRHE) in 1 m KOH under AM 1.5 G (100 mW cm−2) illumination, a 4–8× increase in the water oxidation photocurrent is achieved for Fe2O3/Fe2TiO5, and a considerable cathodic shift of the onset potential up to 0.53–0.62 VRHE is obtained. Moreover, the performance of the Fe2O3/Fe2TiO5 heterostructure can be further improved by decoration with a SnOx layer. The enhancement in photocurrent can be attributed to the synergistic effect of Fe2TiO5/SnOx overlayers passivating surface states, and thus reducing surface electron–hole recombination. |
Keyword | Hematite Iron Titanate Passivation Layer Tin Oxides Water Splitting |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1002/cssc.201600462 |
Funding Organization | SPP1613;DFG |
Indexed By | SCI |
If | 7.226 |
Language | 英语 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/20468 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) 精细石油化工中间体国家工程研究中心(ERC) |
Corresponding Author | Patrik Schmuki |
Affiliation | 1.Univ Erlangen Nuremburg, Dept Mat Sci & Engn, LKO WW4, Martensstr 7, D-91058 Erlangen, Germany 2.Chinese Acad Sci, State Key Lab Oxo Synth & Select Oxidat, Natl Engn Res Ctr Fine Petrochem Intermediates, Lanzhou Inst Chem Phys, Lanzhou 730000, Gansu, Peoples R China 3.King Abdulaziz Univ, Dept Chem, Jeddah, Saudi Arabia |
Recommended Citation GB/T 7714 | Wang, Lei,Nhat Truong Nguyen,Patrik Schmuki. A Facile Surface Passivation of Hematite Photoanodes with Iron Titanate Cocatalyst for Enhanced Water Splitting[J]. ChemSusChem,2016,9(16):2048-2053. |
APA | Wang, Lei,Nhat Truong Nguyen,&Patrik Schmuki.(2016).A Facile Surface Passivation of Hematite Photoanodes with Iron Titanate Cocatalyst for Enhanced Water Splitting.ChemSusChem,9(16),2048-2053. |
MLA | Wang, Lei,et al."A Facile Surface Passivation of Hematite Photoanodes with Iron Titanate Cocatalyst for Enhanced Water Splitting".ChemSusChem 9.16(2016):2048-2053. |
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LZ01029334.pdf(1466KB) | 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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