罗丹明B
光催化
材料科学
石墨烯
图层(电子)
热液循环
复合数
降级(电信)
化学工程
催化作用
逐层
复合材料
纳米技术
化学
有机化学
电信
计算机科学
工程类
作者
Jiemin Gu,Jia Yan,Zhigang Chen,Haiyan Ji,Yanhua Song,Yamin Fan,Hui Xu,Huaming Li
出处
期刊:Dalton Transactions
[Royal Society of Chemistry]
日期:2017-01-01
卷期号:46 (34): 11250-11258
被引量:61
摘要
Novel two-dimensional (2D) metal-free few-layer BN/graphene-like g-C3N4 (2D BN/g-C3N4) composites have been synthesized by a simple hydrothermal method. The construction of a 2D/2D structure between BN and g-C3N4 could shorten the migration distance of charge transfer, and provide a large contact surface. By introducing few-layer BN nanosheets into g-C3N4, the as-prepared 2D BN/g-C3N4 composites exhibited a much enhanced photocatalytic performance than that of pure g-C3N4. The 0.5% 2D BN/g-C3N4 composite possessed the most wonderful ability towards Rhodamine B (RhB) degradation irradiated by visible light, which could achieve a highest degradation efficiency of 98.2% within 120 min. Further studies revealed that modifying g-C3N4 with few-layer BN could not only facilitate the separation and transfer of photo-induced holes and electrons, but also exposed the fact that the (002) facet edges of BN terminated with -OH groups could act as catalytic sites, and thus enhance the photocatalytic activities. Moreover, the successful preparation of 2D BN/g-C3N4 composites may pave the way for fabricating other 2D composites with a layer-by-layer architecture.
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