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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.1c00638
|2 doi
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|a pubmed25n1085.xml
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|a eng
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| 100 |
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|a Lin, Wei
|e verfasserin
|4 aut
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| 245 |
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|a Oxygen Vacancy-Enhanced Photoelectrochemical Water Splitting of WO3/NiFe-Layered Double Hydroxide Photoanodes
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 01.06.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Photoelectrochemical (PEC) water splitting serves as one of the promising approaches for producing clean and renewable energy, and their solar-hydrogen energy conversion efficiency depends on the interfacial charge separation and carrier mobility. Herein, we report an effective strategy to promote the PEC performance by fabricating a WO3 photoanode rich in oxygen vacancies (Ov) modified by NiFe-based layered double hydroxide (LDH). When WO3-Ov/NiFe-LDH is used as a photoanode, the maximum photocurrent density at 1.8 V versus RHE has been significantly enhanced to 2.58 mA·cm-2, which is 4.3 times higher than that of WO3. In addition, analogues were studied in controlled experiments without Ov, which further demonstrated that the synergistic effect of NiFe-LDH and Ov resulted in increased carrier concentration and driving force. According to electrical impedance spectroscopy, X-ray photoelectron spectroscopy, and Mott-Schottky analysis, the built-in electronic field in WO3 homojunction, along with the accelerated hole capture by the NiFe-LDH cocatalyst contributes to the improved charge separation and transport in the WO3-Ov/NiFe-LDH electrode. This work proposes an efficient and valuable strategy for designing the structure of WO3-based photoelectrodes
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|a Journal Article
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1 |
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|a Yu, Yue
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fang, Yaoxun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Jianqiao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Xinran
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Jiangpeng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Yilin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Chao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Lin
|e verfasserin
|4 aut
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| 700 |
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|a Yu, Xuelian
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 37(2021), 21 vom: 01. Juni, Seite 6490-6497
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnas
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| 773 |
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|g volume:37
|g year:2021
|g number:21
|g day:01
|g month:06
|g pages:6490-6497
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|u http://dx.doi.org/10.1021/acs.langmuir.1c00638
|3 Volltext
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