Understanding the growth mechanism of wurtzite Cu2ZnSnS4 nanocrystals and the photodegradation properties
Understanding the growth mechanism of wurtzite Cu2ZnSnS4 nanocrystals and the photodegradation properties
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了解纤锌矿Cu2ZnSnS4纳米晶体的生长机制和光降解性能
DOI：
10.1016/j.matdes.2017.03.012
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发表时间：
2017-06-05
影响因子：
8.4
通讯作者：
Zou, Zhengguang
中科院分区：
文献类型：
--
作者：
Gao, Yao;Long, Fei;Zou, Zhengguang
高质量纤锌矿Cu2ZnSnS4(W-CZTS)纳米晶(NCS)。可以通过一个简单的绿色一锅反应过程轻松获得。用X射线衍射仪和拉曼光谱对纳米晶的形成机理进行了研究。结果表明，W-CZTS的形成始于Cu2S的形核，然后Sn4+扩散到Cu2S中形成Cu2SnS3，最后锌离子扩散到Cu2SnS3中得到W-CZTS。光催化和光催化结果表明，贫铜组分的W-CZTS纳米晶具有较好的光催化活性(对亚甲基蓝的降解率可达81.79%)。此外，这种无需注入的一锅法可以进一步推广，成为合成其他四元纤锌矿Cu2MSnS4(M=Fe+，Co2+，Ni2+，Mn2+，Mg2+)纳米晶的通用方法。(C)2017爱思唯尔有限公司。保留所有权利。
High quality wurtzite Cu2ZnSnS4 (W-CZTS) nanocrystals (NCs). could be easily obtained by a simple green one pot reaction process. Forming mechanism of the nanocrystals was investigated by XRD and Raman characterization. It demonstrated that forming W-CZTS started with nucleation of Cu2S, then Sn4+ diffused into Cu2S to form the Cu2SnS3, finally Zn2+ diffused into Cu2SnS3 to obtain W-CZTS. The optical and photocatalytic results of the WCZTS NCs indicated that W-CZTS nanocrystals with copper-poor composition showed a better photocatalytic activity (the degradation of MB (methylene blue) could reach up to 81.79%). Moreover, this non-injected one-pot method could be further popularized and become a common approach to synthesize other quaternary wurtzite Cu2MSnS4 (M = Fe+, Co2+, Ni2+, Mn2+, Mg2+) nanocrystals. (C) 2017 Elsevier Ltd. All rights reserved.