Graphite carbon nitride (CN) is one of the most researched visible light photocatalysts, but it still cannot be used practically because of its low photoactivity resulting mainly from rapid photogenerated charge recombination. To accelerate charge separation, CN was herein electrostatically assembled with ReS₂, a two‐dimensional semiconductor to construct heterojunction for the first time. The electrostatic and coordination interactions between CN and defect‐rich ReS₂ make them close contact to form heterojunctions. The ReS₂/CN heterojunction exhibits higher photocatalytic performance in pollutant degradation owing to faster generation of reactive oxygen species than CN, as well as increased visible and near‐infrared light absorption because of strong photoabsorption of defect‐rich ReS₂. The accelerated reactive oxygen species generation for the heterojunction arises from accelerated charge separation, especially fast transfer of holes from CN to ReS₂ in assistance of interfacial electric field and great valance‐band edge difference. This work provides a novel CN‐based heterojunction for photoactivity improvement and illustrates significance of electrostatic attraction in fabricating heterojunctions.

中文翻译：

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通过静电组件轻松构建富缺陷的二硫化hen /石墨氮化碳异质结，以快速分离电荷并增强光活性

石墨碳氮化物（CN）是研究最多的可见光光催化剂之一，但由于其光活性较低，这主要是由于快速的光生电荷重组引起的，因此仍不能实际使用。为了加速电荷分离，本文首次将CN与二维半导体ReS _2进行了静电组装，以首次构建异质结。CN和富含缺陷的ReS ₂之间的静电和配位相互作用使它们紧密接触形成异质结。ReS ₂/ CN异质结在污染物降解中表现出较高的光催化性能，这是由于活性氧的生成速度快于CN，并且由于富含缺陷的ReS _2的强光吸收，可见光和近红外光的吸收也增加了。异质结加速生成活性氧的原因是加速了电荷的分离，尤其是在界面电场和较大价带边缘差的帮助下，空穴从CN到ReS _2的快速转移。这项工作为提高光活性提供了一种基于CN的新型异质结，并说明了在制造异质结中静电引力的重要性。