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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 753 - 760 (8page)
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초록· 키워드
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Reducing the fast recombination of photogenerated electron-hole pairsof semiconductor photocatalyst is very important to improve itsphotocatalysis. In this paper we fabricate Cu2O nanocube-decoratedBiVO4 nanocrystal (denoted as BiVO4@Cu2O nanocrystal@nanocube)heterostructure photocatalyst by coupling n-type BiVO4 with p-type Cu2O. The BiVO4@Cu2O nanocrystal@nanocube photocatalysts show superiorphotocatalytic activities in photoelectrochemical (PEC) activity andphotocatalytic water oxidation to BiVO4 photocatalysts under visible lightillumination. The BiVO4@Cu2O nanocrystal@nanocube heterostructureelectrode achieves the highest photocurrent density of ~ 10 μA cm−2 at 0 Vversus Ag/AgCl, 5 times higher than that of BiVO4 nanocrystal electrode (~ 2 μA cm−2). The light induced evolution rate of O2generation for BiVO4@Cu2O nanocrystal@nanocube heterostructures is as high as 150 μmol h−1100 mg cat−1, more than 3times higher than that (48 μmol h−1100 mg cat−1) of BiVO4 nanocrystals. The enhanced photocatalysis activities of theBiVO4@Cu2O nanocrystal@nanocube photocatalysts are attributed to the efficient separation of the photoexcited electron-holepairs caused by inner electronic field (IEF) of p-n junction. This study opens up new opportunities in designing photoactivematerials with highly enhanced performance for solar energy conversion.
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참고문헌 (34)
참고문헌 신청
X. Chen / 2010 / Chem. Rev 111:6503
A. Paracchino / 2011 / Nat. Mater 10:456
M. G. Walter / 2010 / Chem. Rev 111:6446
Hyun Sik Kim / 2014 / Enhancing Photoelectrochemical Water Splitting Performance of TiO2 Nanotube Arrays by Controlling Morphological Properties / Electronic Materials Letters 10(2):345~349
Y. J. Lin / 2011 / J. Am. Chem. Soc 133:2398
A. Paracchino / 2011 / Nat. Mater 10:456
M. G. Walter / 2010 / Chem. Rev 111:6446
Hyun Sik Kim / 2014 / Enhancing Photoelectrochemical Water Splitting Performance of TiO2 Nanotube Arrays by Controlling Morphological Properties / Electronic Materials Letters 10(2):345~349
Y. J. Lin / 2011 / J. Am. Chem. Soc 133:2398
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