Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 279, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2020.119341
Keywords
Photocatalysis; Hydrogen evolution reaction; Heterostructure; Tin oxide; Polypyrrole
Funding
- National Natural Science Foundation of China [21902081, 21875105, U1508202, 51627810, 51972164]
- National Key Research and Development Program of China [2018YFE0208500]
- Major Research Plan of the National Natural Science Foundation of China [91963206]
- Science and Technology Key Project of Henan Province [192102210031]
- Natural Science Foundation of Jiangsu Province [SBK2018022120]
- open fund of Wuhan National Laboratory for Optoelectronics [2018WNLOKF020]
- open fund of Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies [EEST2018-1]
- civil aerospace technology preliminary research project of the State Administration of Science, Technology and Industry for National Defense
- Key Science and Technology Research Program of Educational Committee of Henan Province of China [14A430025]
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Sn3O4 is a promising, low-cost, nontoxic catalyst with suitable bandgap structure for visible-light hydrogen evolution reaction (HER). The micro-structural modifications leading to more efficient charge separation is essential for improving the photocatalytic performance. In this study, a novel Sn3O4/polypyrrole (PPy) heterostructure photocatalyst with porous Sn3O4 nanosheets in-situ anchored on PPy hollow nano rod was constructed through a two-step method combining chemical oxidative polymerization and hydrothermal process. The best hydrogen photo-generation performance was obtained for Sn3O4/2.44 wt%PPy heterostructure reaching 481.05 mu mol g(cata)(lyst)(-1) H-2 within 5 h, which is 7.52 times higher than that of pure Sn3O4. The enhanced hydrogen photo-generation performance can be attributed to the effective charge transfer induced by the electron collector PPy which triggered the photo-induced e-directionally migration and the unique 3D microstructure of this Sn3O4/PPy photocatalyst.
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