Zhang, W;
Ma, J;
Xiong, L;
Jiang, H-Y;
Tang, J;
(2020)
Well-Crystallized alpha-FeOOH Cocatalysts Modified BiVO4 Photoanodes for Efficient and Stable Photoelectrochemical Water Splitting.
ACS Applied Energy Materials
, 3
(6)
pp. 5927-5936.
10.1021/acsaem.0c00834.
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Abstract
Monoclinic bismuth vanadate (BiVO4) is a potential photoanode for photoelectrochemical (PEC) water splitting, but it suffers from poor electron–hole separation. Here, a reproducible chemical bath deposition method was employed to immobilize well-crystallized α-FeOOH on the BiVO4 photoanode, resulting in a nearly unity faradaic efficiency and more than 21-fold higher solar to fuel conversion efficiency compared with pure BiVO4 photoanode. The precursor containing Fe2+ ions has been identified to be crucial for preparation of this well-crystallized α-FeOOH cocatalyst. Systematic studies revealed that the high efficiency and excellent stability of the α-FeOOH(P-II)/BiVO4 photoanode were attributed to the well-crystallized α-FeOOH that facilitated the charge carrier separation and transfer for PEC water splitting. Our findings thus not only demonstrated a highly stable and efficient photoanode for PEC water splitting but also provided a promising strategy for the rational design of well-crystallized α-FeOOH.
| Type: | Article |
|---|---|
| Title: | Well-Crystallized alpha-FeOOH Cocatalysts Modified BiVO4 Photoanodes for Efficient and Stable Photoelectrochemical Water Splitting |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acsaem.0c00834 |
| Publisher version: | https://doi.org/10.1021/acsaem.0c00834 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Technology, Chemistry, Physical, Energy & Fuels, Materials Science, Multidisciplinary, Chemistry, Materials Science, crystallized alpha-FeOOH, BiVO4, photoanode, stability, water splitting, OXYGEN EVOLUTION CATALYSTS, CHARGE SEPARATION, NANORODS, LAYER, HETEROJUNCTION, NANOSTRUCTURE, PERFORMANCE, FABRICATION, NANOLAYERS, FILMS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10112321 |
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