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

Porous Sn3O4 nanosheets on PPy hollow rod with photo-induced electrons oriented migration for enhanced visible-light hydrogen production
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PPy 空心棒上的多孔 Sn3O4 纳米片具有光致电子定向迁移,可增强可见光产氢

DOI:
10.1016/j.apcatb.2020.119341
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发表时间:
2020-12
期刊:
Applied Catalysis B: Environmental
影响因子:
--
通讯作者:
Zhigang Zou
Zhigang Zou
中科院分区:
其他
文献类型:
--
作者:
Liuqing Yang;Manfei Lv;Yan Song;Kunyin Yin;Xiangliang Wang;Xinlei Cheng;Kesheng Cao;Songtian Li;Cheng Wang;Yingfang Yao;Wenjun Luo;Zhigang Zou

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Sn 3 O 4是一种低成本、无毒、具有合适能带结构的可见光析氢催化剂。微观结构的修饰导致更有效的电荷分离是提高光催化性能的关键。采用化学氧化聚合和水热法相结合的两步法,将Sn 3 O 4纳米片原位锚定在聚吡咯(PPy)中空纳米棒上,制备了一种新型Sn 3 O 4/PPy异质结构光催化剂。Sn 3 O 4/2.44wt%PPy异质结构的光生氢性能最好,在5 h内可达到481.05 μmol g催化剂-1H2,是纯Sn 3 O 4的7.52倍。光生氢性能的提高归因于电子收集剂PPy引发的有效电荷转移和Sn 3 O 4/PPy光催化剂独特的三维微结构。
Sn3O4is 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 Sn3O4nanosheetsin-situanchored 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 μmol gcatalyst−1H2within 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 micro-structure of this Sn3O4/PPy photocatalyst.
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