Enhancement of g-C3N4 nanosheets photocatalysis by synergistic interaction of ZnS microsphere and RGO inducing multistep charge transfer
Enhancement of g-C3N4 nanosheets photocatalysis by synergistic interaction of ZnS microsphere and RGO inducing multistep charge transfer
复制标题
通过ZnS微球和RGO的协同相互作用诱导多步电荷转移增强g-C3N4纳米片光催化作用
DOI：
10.1016/j.apcatb.2016.05.056
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发表时间：
2016-12-05
影响因子：
22.1
通讯作者：
Chen, Min
中科院分区：
文献类型：
--
作者：
Shao, Leqiang;Jiang, Deli;Chen, Min
首次采用沉淀法制备了g-C3 N4/还原氧化石墨烯/ZnS（CN/RGO/ZS）三元纳米复合材料。在可见光照射下，CN/RGO/ZS复合材料对罗丹明B的光催化降解率明显提高（60 min后约为97%），分别是CN/RGO、CN/ZS和RGO/ZS的1.04、1.17和5.38倍。RGO/CN/ZS复合材料的光催化性能的增强来自于三个组分的协同效应：有效的电荷分离、CN/ZS异质结与RGO纳米片之间的多步转移以及增强的可见光吸收。通过活性种捕集和ESR分析研究了相关机理。该研究为设计和构建具有更高光催化活性的CN基三元复合光催化剂提供了有益的启示。(C)2016爱思唯尔B. V.保留所有权利。
The ternary nanocomposite of g-C3N4/reduced graphene oxide/ZnS (CN/RGO/ZS) has been prepared through a facile precipitation route for the first time. The as-prepared CN/RGO/ZS composite exhibit distinctly enhanced photocatalytic activities toward the degradation of Rhodamine B (about 97% after 60 min) under visible light irradiation, which was about 1.04, 1.17 and 5.38 times higher than those of CN/RGO, CN/ZS and RGO/ZS. The enhanced photocatalytic performance of RGO/CN/ZS composite arises from the synergistic effects of three components: effective charge separation, multistep transfer between CN/ZS heterojunction and RGO nanosheets, and enhanced visible-light absorption. The relative mechanism has been investigated by active species trapping and ESR analysis. This work may provide useful insights to design and construction of CN-based ternary composite photocatalysts with enhanced photocatalytic activity. (C) 2016 Elsevier B.V. All rights reserved.