Visible light photocatalytic properties of one-step SnO2-templated grown SnO2/SnS2heterostructure and SnS2nanoflakes

Chiu-Yen Wang; Yu-Kai Wu; Liang-Feng Tsai; Hou-Kuan Lee; Ya-Chu Hsu

doi:10.1088/1361-6528/abd8f6

Visible light photocatalytic properties of one-step SnO₂-templated grown SnO₂/SnS₂heterostructure and SnS₂nanoflakes

Nanotechnology. 2021 May 5;32(30). doi: 10.1088/1361-6528/abd8f6.

Authors

Chiu-Yen Wang¹, Yu-Kai Wu¹, Liang-Feng Tsai¹, Hou-Kuan Lee¹, Ya-Chu Hsu¹

Affiliation

¹ Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.

PMID: 33406508
DOI: 10.1088/1361-6528/abd8f6

Abstract

The nanoflakes of SnS₂/SnO₂heterostructure and SnS₂were synthesized by a one-step SnO₂-templated chemical vapor deposition method. The metal oxide-assisted growth mechanism of SnS₂/SnO₂heterostructure and SnS₂nanoflakes were realized through investigating serial microstructures of products with varied growth time. Furthermore, the photocatalytic activity for MB dyes degradation of varied growth time products was used to explore the effect of product microstructure under the visible light irradiation. The SnO₂/SnS₂heterostructure and the oxide vacancies of nanoflakes demonstrated an improved visible light photocatalytic performance for MB degradation, which was around twice of the pure SnS₂nanoflakes and better than P25. The results of different scavengers on the degradation efficiency for MB indicate the·O₂^-, and ·OH are the main active species in the photodegradation reaction. The one-step growth mechanism of SnS₂/SnO₂could prove a facile process to grow metal oxide-metal sulfide heterostructure.

Keywords: SnS2; heterostructure; nanoflake; orientated attachment; photocatalyst.