期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 883, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.160743
关键词
Visible light photocatalysis; Piezoelectric effect; Nanostructure; SBTO; SnS2 hybrid
资金
- National Natural Science Foundation of China [21922202]
- Innovation and Entrepreneurship Training Project for Undergraduate of Jiangsu Higher Education Institutions [202013987014Y]
- Natural Science Research Project of Jiangsu Higher Education Institutions [19KJB150043]
In this study, SBTO/SnS2 hybrids were synthesized by decorating SnS2 nanostructures on SBTO nanosheets, significantly enhancing the light absorption capability, photocatalytic activity, and stability of the hybrids. The introduced periodic magnetic stirring helps resolve the electrostatic screening of ferroelectric, promoting the separation of electrons and holes, and further improving the photocatalytic activity.
Combining the ferroelectric with semiconductor photocatalyst has been demonstrated as an effective strategy to facilitate the separation of photogenerated electrons and holes, leading to superior synergistic catalytic performance. Herein, SrBi4Ti4O15 (SBTO)/SnS2 hybrids were synthesized, where SnS2 nanostructures were decorated on the surfaces of SBTO nanosheets through a hydrothermal method. The nanostructure of SnS2 could be controlled from nanoparticles to hollow nanoflowers and eventually nanoflowers with increasing concentration of SnCl4. The light absorption capability, photocatalytic activity, and stability of SBTO/SnS2 hybrids were tremendously enhanced, ascribing to the introduction of SnS2 and built-in electric field of ferroelectric SBTO. The introduced periodic magnetic stirring on ferroelectric could resolve the electrostatic screening and help maintain the constant effectiveness of built-in field, promoting the separation of electrons and holes and further improving photocatalytic activity. (c) 2021 Elsevier B.V. All rights reserved.
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