Single platinum atoms anchored on holy carbon nitride for efficient photodegradation of sulfonylurea herbicide

文献类型： 外文期刊

第一作者： Liu, Xue

作者： Liu, Xue;Yu, Weisong;Fang, Song;Zhang, Jiguang;Qiu, Jun;Kong, Fanyu;Wang, Shuaijun;Zhang, Jinqiang;Duan, Xiaoguang

作者机构：

关键词： Single platinum atom; Carbon nitride; Photocatalytic degradation; Sulfonylurea herbicide; Phytotoxicity

期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：16.744； 五年影响因子：14.61 ）

ISSN： 1385-8947

年卷期： 2022 年 446 卷

页码：

收录情况： SCI

摘要： The photocatalytic performances of graphitic carbon nitride (GCN) are dramatically limited by rapid charge carriers' combination and the low utilization of photo-excited electrons and holes thereafter. To address this, we employed a wet impregnation approach to anchor single platinum atoms onto holy carbon nitride nanosheets (PtSA-HCNNS). The X-ray absorption fine structure and density functional theory calculations illustrated that PtSA-HCNNS was equipped with Pt-N4 coordination, which was favorable for oxygen absorption and the generation of reactive oxidation species. As a result, PtSA-HCNNS exhibited significantly enhanced photocatalytic activity for evolving reactive species and degrading herbicide (halosulfuron-methyl) than pristine GCN and Pt cluster-decorated GCN. In addition, PtSA-HCNNS was capable of simultaneously removing five commonly used sulfonylurea herbicides and reducing their phytotoxicity toward soybean seedlings. This work offers a facile approach to developing high-performance porous carbon nitride with single Pt doping for sustainable photocatalytic purification.

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