Enhancing the Photocatalytic Hydrogen Evolution Activity of Mixed-Halide Perovskite CH3NH3PbBr3–xIx Achieved by Bandgap Funneling of Charge Carriers
Yaqiang Wu
1
,
Peng Wang
1
,
Zihan Guan
1
,
Jun Xue Liu
2
,
Zeyan Wang
1
,
Zhaoke Zheng
1
,
Shengye Jin
2
,
Ying-yi Dai
3
,
M.-H. Whangbo
4
,
Publication type: Journal Article
Publication date: 2018-09-27
scimago Q1
wos Q1
SJR: 3.782
CiteScore: 19.5
Impact factor: 13.1
ISSN: 21555435
General Chemistry
Catalysis
Abstract
Powder samples of mixed halide perovskite MAPbBr3–xIx (MA = methylammonium ion, CH3NH3+) were prepared by employing a facile light-assisted halide-exchange method in aqueous halide solution at room temperature. It is found that the distribution of iodide ions in the MAPbBr3–xIx particles tends to be largest on the surface and becomes lower on going into the interior so that they have a correct bandgap funnel structure that is needed for transferring photogenerated charge carriers from the interior to the surface. Consequently, the MAPbBr3–xIx/Pt powder sample (250 mg) exhibits an enhanced photocatalytic activity for a H2 evolution under visible light (100 mW cm–2, λ ≥ 420 nm) with the rate of 651.2 μmol h–1 and a solar-to-chemical conversion efficiency of 1.05%.
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206
Total citations:
206
Citations from 2024:
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(26.22%)
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GOST
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Wu Y. et al. Enhancing the Photocatalytic Hydrogen Evolution Activity of Mixed-Halide Perovskite CH3NH3PbBr3–xIx Achieved by Bandgap Funneling of Charge Carriers // ACS Catalysis. 2018. Vol. 8. No. 11. pp. 10349-10357.
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Wu Y., Wang P., Guan Z., Liu J. X., Wang Z., Zheng Z., Jin S., Dai Y., Whangbo M., Huang B. Enhancing the Photocatalytic Hydrogen Evolution Activity of Mixed-Halide Perovskite CH3NH3PbBr3–xIx Achieved by Bandgap Funneling of Charge Carriers // ACS Catalysis. 2018. Vol. 8. No. 11. pp. 10349-10357.
Cite this
RIS
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TY - JOUR
DO - 10.1021/acscatal.8b02374
UR - https://doi.org/10.1021/acscatal.8b02374
TI - Enhancing the Photocatalytic Hydrogen Evolution Activity of Mixed-Halide Perovskite CH3NH3PbBr3–xIx Achieved by Bandgap Funneling of Charge Carriers
T2 - ACS Catalysis
AU - Wu, Yaqiang
AU - Wang, Peng
AU - Guan, Zihan
AU - Liu, Jun Xue
AU - Wang, Zeyan
AU - Zheng, Zhaoke
AU - Jin, Shengye
AU - Dai, Ying-yi
AU - Whangbo, M.-H.
AU - Huang, Baibiao
PY - 2018
DA - 2018/09/27
PB - American Chemical Society (ACS)
SP - 10349-10357
IS - 11
VL - 8
SN - 2155-5435
ER -
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@article{2018_Wu,
author = {Yaqiang Wu and Peng Wang and Zihan Guan and Jun Xue Liu and Zeyan Wang and Zhaoke Zheng and Shengye Jin and Ying-yi Dai and M.-H. Whangbo and Baibiao Huang},
title = {Enhancing the Photocatalytic Hydrogen Evolution Activity of Mixed-Halide Perovskite CH3NH3PbBr3–xIx Achieved by Bandgap Funneling of Charge Carriers},
journal = {ACS Catalysis},
year = {2018},
volume = {8},
publisher = {American Chemical Society (ACS)},
month = {sep},
url = {https://doi.org/10.1021/acscatal.8b02374},
number = {11},
pages = {10349--10357},
doi = {10.1021/acscatal.8b02374}
}
Cite this
MLA
Copy
Wu, Yaqiang, et al. “Enhancing the Photocatalytic Hydrogen Evolution Activity of Mixed-Halide Perovskite CH3NH3PbBr3–xIx Achieved by Bandgap Funneling of Charge Carriers.” ACS Catalysis, vol. 8, no. 11, Sep. 2018, pp. 10349-10357. https://doi.org/10.1021/acscatal.8b02374.