Efficient Photocatalytic Removal of Aqueous Ammonia Nitrogen by g-C3N4/CoP Heterojunctions Under Visible Light Illumination
文献类型： 外文期刊
作者： Wang, Dongxu 1 ; Mao, Wanfeng 1 ; Zhao, Lihong 1 ; Meng, Duo 1 ; Tang, Jiaqi 2 ; Wu, Tengfei 3 ;
作者机构： 1.Liaoning Univ Technol, Dept Civil & Architecture Engn, Jinzhou 121000, Peoples R China
2.Jinzhou Water Affairs Grp Co Ltd, Jinzhou 121000, Peoples R China
3.Guangdong Acad Agr Sci, Inst Agr Resources & Environm, Guangzhou 510640, Peoples R China
关键词： g-C3N4/CoP heterojunction; ammonia nitrogen removal; photocatalytic technology; nitrogen selectivity
期刊名称：NANOMATERIALS （ 影响因子：4.3； 五年影响因子：4.7 ）
ISSN：
年卷期： 2024 年 14 卷 24 期
页码：
收录情况： SCI
摘要： With the development of industry, agriculture, and aquaculture, excessive ammonia nitrogen mainly involving ionic ammonia (NH4+) and molecular ammonia (NH3) has inevitable access to the aquatic environment, posing a severe threat to water safety. Photocatalytic technology shows great advantages for ammonia nitrogen removal, such as its efficiency, reusability, low cost, and environmental friendliness. In this study, CP (g-C3N4/CoP) composite materials, which exhibited high-efficiency ammonia nitrogen removal, were synthesized through a simple self-assembly method. For the optimal CP-10 (10% CoP) samples, the removal rate of ammonia nitrogen reached up to 94.8% within 80 min under visible light illumination. In addition, the nitrogen selectivity S(N-2) is about 60% for all oxidative products. The high performance of the CP-10 photocatalysts can be ascribed to the effective separation and transmission of electron-hole pairs caused by their heterogeneous structure. This research has significance for the application of photocatalysis for the remediation of ammonia nitrogen wastewater.
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