In:
Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 112, No. 45 ( 2015-11-10), p. 13774-13778
Abstract:
Through phase transition-induced band edge engineering by dual doping with In and Mo, a new greenish BiVO 4 (Bi 1-X In X V 1-X Mo X O 4 ) is developed that has a larger band gap energy than the usual yellow scheelite monoclinic BiVO 4 as well as a higher (more negative) conduction band than H + /H 2 potential [0 V RHE (reversible hydrogen electrode) at pH 7]. Hence, it can extract H 2 from pure water by visible light-driven overall water splitting without using any sacrificial reagents. The density functional theory calculation indicates that In 3+ /Mo 6+ dual doping triggers partial phase transformation from pure monoclinic BiVO 4 to a mixture of monoclinic BiVO 4 and tetragonal BiVO 4 , which sequentially leads to unit cell volume growth, compressive lattice strain increase, conduction band edge uplift, and band gap widening.
Type of Medium:
Online Resource
ISSN:
0027-8424
,
1091-6490
DOI:
10.1073/pnas.1509674112
Language:
English
Publisher:
Proceedings of the National Academy of Sciences
Publication Date:
2015
detail.hit.zdb_id:
209104-5
detail.hit.zdb_id:
1461794-8
SSG:
11
SSG:
12
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