Phase-controlled synthesis and photocatalytic properties of SnS, SnS₂ and SnS/SnS₂ heterostructure nanocrystals

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• 作者：Xianghua Hu ; Guosheng Song ; Wenyao Li ; Yanling Peng ; Lin Jiang ; Yafang Xue ; Qian Liu ; Zhigang Chen ; Junqing Hu ; ^{hu.junqing@dhu.edu.cn}
• 关键词：A. Chalcogenides ; A. Nanostructures ; B. Chemical synthesis ; C. X-ray diffraction
• 刊名：Materials Research Bulletin
• 出版年：2013
• 出版时间：June, 2013
• 年：2013
• 卷：48
• 期：6
• 页码：2325-2332
• 全文大小：1733 K

文摘

A phase-controlled synthesis of well-defined tin sulphides, including SnS, SnS₂ and SnS/SnS₂ heterostructured materials, was developed by one-step pyrolysis method. Such a phase-controlled process was realized by changing the amount of CS₂ in the precursor, in which pure SnS and SnS₂ flakes were obtained upon no CS₂ involved or CS₂ excessively existed, while SnS/SnS₂ heterostructured material formed by adding a suitable amount of CS₂ to the precursor, following the Ostwald ripening. As-prepared tin sulphides materials showed a wide-range UV-vis absorption (300-800 nm) and excellent photoresponse property; particularly, SnS/SnS₂ heterostructured material showed improved photocatalytic performance on photodegrading organic dyes, compared with that of as-synthesized pure phases of SnS and SnS₂ materials.