Wang Chiu-Yen, Wu Yu-Kai, Tsai Liang-Feng, Lee Hou-Kuan, Hsu Ya-Chu
Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
Nanotechnology. 2021 May 5;32(30). doi: 10.1088/1361-6528/abd8f6.
The nanoflakes of SnS/SnOheterostructure and SnSwere synthesized by a one-step SnO-templated chemical vapor deposition method. The metal oxide-assisted growth mechanism of SnS/SnOheterostructure and SnSnanoflakes 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 SnO/SnSheterostructure and the oxide vacancies of nanoflakes demonstrated an improved visible light photocatalytic performance for MB degradation, which was around twice of the pure SnSnanoflakes and better than P25. The results of different scavengers on the degradation efficiency for MB indicate the·O, and ·OH are the main active species in the photodegradation reaction. The one-step growth mechanism of SnS/SnOcould prove a facile process to grow metal oxide-metal sulfide heterostructure.
采用一步法以SnO为模板的化学气相沉积法合成了SnS/SnO异质结构和SnS的纳米片。通过研究不同生长时间产物的系列微观结构，实现了SnS/SnO异质结构和SnS纳米片的金属氧化物辅助生长机制。此外，利用不同生长时间产物对MB染料降解的光催化活性，探究了可见光照射下产物微观结构的影响。SnO/SnS异质结构和纳米片的氧化物空位对MB降解表现出改善的可见光光催化性能，约为纯SnS纳米片的两倍，且优于P25。不同清除剂对MB降解效率的结果表明，·O和·OH是光降解反应中的主要活性物种。SnS/SnO的一步生长机制证明了一种生长金属氧化物-金属硫化物异质结构的简便方法。
