Cu2O NPs/Bi2O2CO3 flower-like complex photocatalysts with enhanced visible light photocatalytic degradation of organic pollutants
Cu2O NPs/Bi2O2CO3 flower-like complex photocatalysts with enhanced visible light photocatalytic degradation of organic pollutants
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Cu2O NPs/Bi2O2CO3花状复合光催化剂增强可见光光催化降解有机污染物
DOI：
10.1016/j.cattod.2017.01.032
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发表时间：
2017-11-15
期刊：
影响因子：
5.3
通讯作者：
Zhang, Zisheng
中科院分区：
文献类型：
--
作者：
Lin, Shuanglong;Cui, Wenquan;Zhang, Zisheng
提出了一种简便可行的界面自组装方法来制备花状Cu2O/Bi2O2CO3微复合材料。通过对亚甲基蓝(MB)的降解来评价复合材料在可见光下的光催化活性。与Bi2O2CO3相比，花状Cu2O/Bi2O2CO3微复合材料具有更高的光催化活性。此外，我们的结果还表明，Cu2O/Bi2O2CO3复合材料的光催化活性依赖于Cu2O的负载量。光照20min后，Cu2O/Bi2O2CO3光催化性能最高，达到94%，分别是纯Cu2O(按Cu2O/Bi2O2CO3的当量Cu2O含量计算)和纯Bi2O2CO3的3~5倍。在此基础上提出了Cu2O/Bi2O2CO3光催化降解亚甲基蓝的机理。我们的结果为设计基于Cu2O/铋及其相关功能材料的高可见响应性光催化剂提供了宝贵的方法，在半导体复合材料和新能源应用中具有广阔的应用前景。(C)2017年，由爱思唯尔出版。
A facile and feasible interfacial self-assembly approach was developed to synthesize flower-like Cu2O/Bi2O2CO3 micro-composites. Degradation of methylene blue (MB) was used to evaluate the photocatalytic activity of composite under visible light. When compared to Bi2O2CO3, the flower-like Cu2O/Bi2O2CO3 micro-composites show higher photocatalytic activity. Additionally, our results indicate that the photocatalytic activity of Cu2O/Bi2O2CO3 composites is dependent on Cu2O loading. The highest photocatalytic performance of Cu2O/Bi2O2CO3 micro-composites is 94% after irradiation for 20min, which is 3-5 times that of pure Cu2O (calculated based on the equivalent Cu2O content in Cu2O/Bi2O2CO3) and pure Bi2O2CO3 respectively. Photocatalytic mechanism for the degradation of MB over Cu2O/Bi2O2CO3 was proposed based on the above. Our results provide an invaluable methodology for designing high visible-responsive photocatalysts based on Cu2O/bismuth and related functional materials, which is promising for semiconductor composites and new energy applications. (C) 2017 Published by Elsevier B.V.