摘要
2,3,7,8-四氯二苯并对二噁英(2,3,7,8-TCDD)是二噁英家族中危害人类和环境最显著的一种.设计一种高效,灵敏的吸附剂来检测和去除2,3,7,8-TCDD对人类和环境的影响是亟需解决的问题.本研究利用基于密度泛函理论(DFT)的计算模拟方法探索了本征磷烯对2,3,7,8-TCDD的吸附机理,并详细考察了掺杂Ti,Fe,Ca,Al金属原子后磷烯对2,3,7,8-TCDD吸附的影响.研究结果表明2,3,7,8-TCDD初始构型会影响磷烯对其吸附,当平躺于磷烯表面时有较大的吸附.而且掺杂金属原子的磷烯对2,3,7,8-TCDD的吸附也存在较大的影响,掺杂金属原子均增大了磷烯对2,3,7,8-TCDD的吸附,其中Ca掺杂磷烯>Fe掺杂磷烯>Ti掺杂磷烯>Al掺杂磷烯.研究结论对于2,3,7,8-TCDD的处理带来了新的思考方向,有望为二噁英的检测和去除提供有用的理论指导.
2,3,7,8-tetrachlorodibenzo-p-dioxin(2,3,7,8-TCDD)is one of the most significant one in dioxin families that harms humans and environment.It is an urgent problem to design an efficient and sensitive adsorbent in order to detect and remove the effects of 2,3,7,8-TCDD on humans and the environment.In this study,the first-principles method based on density Functional theory(DFT)was used to explore the adsorption mechanism of 2,3,7,8-TCDD on intrinsic phosphorene,and the effect of doping Ti,Fe,Ca,Al metal atoms into intrinsic phosphorene on the 2,3,7,8-TCDD adsorption was investigated in detail.The results demonstrated that the initial configuration of 2,3,7,8-TCDD affects the adsorption,and the adsorption is greater when lying flat on the intrinsic phosphorene surface.Moreover,the doping of metal atoms also has a great influence on the adsorption of 2,3,7,8-TCDD on the phosphorene surface.The metal atoms doping increases the adsorption between intrinsic phosphorene and 2,3,7,8-TCDD.Ca doped phosphorene>Fe doped phosphorene>Ti doped phosphorene>Al doped phosphorene.The conclusion brings new thinking for the treatment of 2,3,7,8-TCDD and is expected to provide useful theoretical guidance for the detection and removal of dioxins.
作者
王群
赵虹林
崔德鑫
王聪
覃庆雨
赖国琴
任涵琳
孙静
周乃武
孙玉希
WANG Qun;ZHAO Hong-Lin;CUI De-Xin;WANG Cong;QIN Qing-Yu;LAI Guo-Qin;REN Han-Lin;SUN Jing;ZHOU Nai-Wu;SUN Yu-Xi(Ecological Security and Protection Key Laboratory of Sichuan Province,Mianyang Teachers’College,Mianyang 621000,China;College of Life Science and Technology,Mianyang Teachers’College,Mianyang 621000,China;College of Chemistry and Chemical Engineering,Mianyang Teachers’College,Mianyang 621000,China;Key Laboratory of Photoinduced Functional Materials,Mianyang Teachers’College,Mianyang 621000,China;Key Laboratory of Life-Organic Analysis,Qufu Normal University,Qufu 273165,China;Beijing Key Laboratory of Flavor Chemistry,Beijing Technology and Business University(BTBU),Beijing 100048,China)
出处
《原子与分子物理学报》
CAS
北大核心
2024年第2期61-67,共7页
Journal of Atomic and Molecular Physics
基金
绵阳师范学院2019年校级科研启动项目(QD2019A20)
绵阳师范学院校级一流本科课程(Mnu-JY220012)
绵阳师范学院校级“课程思政”示范课程(Mnu-JY2031)
2021年国家级和四川省大学生创新创业训练计划(202110639024,S202110639057)
绵阳师范学院2022年度大学生创新创业计划训练项目(2022354,2022371)
四川省教育厅高校思想政治工作队伍培训研修中心(西南交通大学)思想政治教育研究课题(高校辅导员专项)(CJSFZ22-26)。
