化学工程2026，Vol.54Issue(5)：20-26,7.DOI:10.3969/j.issn.1005-9954.2026.05.004
氧化铜和硫、磷共掺杂g-C3N4降解盐酸四环素性能
S/P-doping coupled with CuO co-modified g-C3N4 for photocatalytic degradation of tetracycline hydrochloride
摘要
Abstract
Photocatalytic degradation technology is a powerful tool for wastewater treatment due to its high efficiency and environmental friendliness.In this paper,CN-SP(S/P co-doping g-C3N4)was synthesized via thermal polymerization using melamine,ammonium phosphate,and thiourea as precursors.Subsequently,a composite photocatalyst,CN-SP-CuO,was constructed by forming a heterojunction through ball-mill modification of CN-SP and CuO.The morphology and physical properties of CN-SP-CuO composites were characterized and analyzed by SEM,XRD,BET,XPS,UV-Vis DRS,PL and photoelectrochemical measurements.The results demonstrate that S/P co-doping increases the specific surface area of g-C3N4,while both S/P co-doping and CuO heterojunction modification enhance the visible-light absorbance of g-C3N4,suppress the recombination rate of photogenerated electron-hole pairs,and improve the photocatalytic activity.In the photocatalytic degradation of tetracycline hydrochloride,the optimal sample,CN-SP-CuO-2,achieves a degradation rate of 89.4％under visible light.Radical quenching experiments reveal that superoxide radicals(·O2-)play a predominant role in the photocatalytic degradation process.关键词
光催化/石墨相氮化碳/S/P共掺杂改性/异质结/盐酸四环素Key words
photocatalysis/graphite phase carbon nitride/S/P co-doping for modification/heterostructure construction/tetracycline hydrochloride分类
资源环境引用本文复制引用
白江蕊,高莉宁,李立,薛蓬勃,崔子航,何锐..氧化铜和硫、磷共掺杂g-C3N4降解盐酸四环素性能[J].化学工程,2026,54(5):20-26,7.基金项目
陕西省重点研发计划项目(2023-YBGY-495) （2023-YBGY-495）
陕西省交通科研项目(23-22K) （23-22K）
长安大学中央高校基本科研业务费专项资金资助项目(300102312402) （300102312402）
