Porous Sn3O4 nanosheets on PPy hollow rod with photo-induced electrons oriented migration for enhanced visible-light hydrogen production

被引：69
作者：
Yang, Liuqing [1 ,2 ]
Lv, Manfei [2 ]
Song, Yan [2 ]
Yin, Kunyin [2 ]
Wang, Xiangliang [2 ]
Cheng, Xinlei [2 ]
Cao, Kesheng [2 ]
Li, Songtian [2 ]
Wang, Cheng [1 ]
Yao, Yingfang [3 ]
Luo, Wenjun [3 ]
Zou, Zhigang [1 ,3 ,4 ,5 ]
机构：
[1] Nanjing Univ, Ecomat & Renewable Energy Res Ctr ERERC, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct,Sch Phys, 22 Hankou Rd, Nanjing 210093, Jiangsu, Peoples R China
[2] Pingdingshan Univ, Sch Chem & Environm Engn, Pingdingshan 467000, Henan, Peoples R China
[3] Nanjing Univ, Coll Engn & Appl Sci, 22 Hankou Rd, Nanjing 210093, Jiangsu, Peoples R China
[4] Chinese Univ Hong Kong, Sch Sci & Engn, 2001 Longxiang Blvd, Shenzhen 518172, Peoples R China
[5] Macau Univ Sci & Technol, Macau Inst Syst Engn, Macau 999078, Peoples R China
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2020年 / 279卷
基金：
中国国家自然科学基金;
关键词：
Photocatalysis; Hydrogen evolution reaction; Heterostructure; Tin oxide; Polypyrrole; PHOTOCATALYTIC ACTIVITY; EFFICIENT; NANOSTRUCTURES; DEGRADATION; COMPOSITES; NANOTUBES; EVOLUTION; G-C3N4; HETEROSTRUCTURES; NANOCOMPOSITE;
D O I：
10.1016/j.apcatb.2020.119341
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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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页数：12
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