摘要
阿米替林是一种被广泛使用的抗抑郁药,阿米替林及其代谢产物对水生生物和人体健康产生危害。阿米替林作为一种新兴污染物,其去除方法的研究受到广泛关注。研究采用水热法制备石墨烯量子点/二氧化钛(GQDs/TiO_(2))复合催化剂,通过X射线粉末衍射(XRD)、扫描电镜(SEM)和比表面测试(BET)表征了复合物的结构和形貌。催化剂可见光催化降解阿米替林性能表明,当GQDs的负载量为4%,溶液pH为11,催化剂投加量为0.08 g,阿米替林的初始浓度为5μmol/L时,GQDs/TiO_(2)对阿米替林的降解性能达到最优,为93.1%。GQDs的引入促进了光生电子空穴对的有效分离和转移,超氧阴离子自由基(·O_(2)^(-))是光催化过程中最主要的活性物种,其次是电子(e^(-))和羟基自由基(·OH)。
Amitriptyline is a widely used antidepressant,amitriptyline and its metabolites would threat to the aquatic organisms and human health.As an emerging pollutant,amitriptyline has received widespread attention in its removal methods.Hydrothermal method was used to prepare graphene quantum dots/titanium dioxide (GQDs/TiO_(2)) composite catalyst,its structure and morphology was characterizes by X-ray powder diffraction (XRD),scanning electron microscopy (SEM),and specific surface area testing (BET).The catalytic degradation performance of the catalyst for amitriptyline visible light shown that when the loading amount of GQDs was 4%,the solution pH was 11,the catalyst dosage was 0.08 g,and the initial concentration of amitriptyline was 5μmol/L,the degradation performance of GQDs/TiO_(2) reached the optimal level,which was 93.1%.The introduction of GQDs promoted the effective separation and transfer of photogenerated electron-hole pairs,superoxide anion radicals (·O_(2)^(-)) was the most active speciesin the photocatalytic process,followed by electrons (e^(-)) and hydroxyl radicals (·OH).
作者
梁伟夏
林香凤
李可成
谢威
LIANG Weixia;LIN Xiangfeng;LI Kecheng;XIE Wei(School of Medicine and Health,Guangxi Vocational&Technical Institute of Industry,Nanning 530001,China;School of Environment and Resource,Guangxi Normal University,Guilin 541004,China;School of Intelligent Manufacturing Institute,Guangxi Vocational&Technical Institute of Industry,Nanning 530001,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2024年第8期33-37,共5页
Technology of Water Treatment
基金
广西重点研发计划资助项目(AB20238014)
广西自然科学基金(2019GXNSFAA185061)
广西自然科学基金(2017GXNSFBA198216)
广西高校中青年教师科研基础能力提升项目(2021KY1269)。
作者简介
梁伟夏(1980-),女,副教授,研究方向为光催化材料、水污染治理等,电子邮件:liangwxabc@163.com;通讯作者:李可成,副教授,电子邮件:182854753@qq.com。
