摘要
为提高纯氮化碳的光催化性能,增强其在处理污水中抗生素的应用,采用水热一步合成法成功合成了CN/FeS_(2)、CN/Fe_(2)O_(3)、Fe_(2)O_(3)/FeS_(2)复合材料。XRD、FT-IR分析结果表明,复合材料被成功制备。阐述了Z型异质结CN/FeS_(2)中CN和FeS_(2)之间的电子传输方式。ESR测试结果表明,超氧自由基为催化过程中的主要活性物种,其中CN/FeS_(2)降解四环素效率高达97%,经过6次降解循环后效率降低11%。该研究为光催化合成、设计和净化污染物开辟了新途径。
In order to improve the photocatalytic performance of pure carbon nitride and enhance its application in wastewater treatment antibiotics,CN/FeS_(2),CN/Fe_(2)O_(3),and Fe_(2)O_(3)/FeS_(2) composites are successfully synthesized via hydrothermal one⁃step synthesis method.The results by XRD and FT⁃IR analysis show that the composites are successfully prepared,a Z⁃type heterojunction CN/FeS_(2) is suggested,and the electron transport mode between CN and FeS_(2) is described.ESR test show that superoxide free radicals represent the main active species in the catalytic process,and the efficiency of CN/FeS_(2) in degrading tetracycline is as high as 97%.After six degradation cycles,the efficiency declines by 11%.This study opens up a new way for photocatalytic synthesis,as well as the design and purification of pollutants.
作者
周彤
董国辉
ZHOU Tong;DONG Guo-hui(School of Environmental Science and Engineering,Shaanxi University of Science and Technology,Xi'an 843300,China)
出处
《现代化工》
CAS
CSCD
北大核心
2024年第4期106-111,共6页
Modern Chemical Industry
基金
国家自然科学基金项目(21876104,21603109)。
关键词
氮化碳
三氧化二铁
黄铁矿
光催化
四环素
carbon nitride
iron sesquioxide
pyrite
photocatalysis
tetracycline
