纳米金负载的磁性微球吸附汞的研究  

Adsorption of Mercury by Gold NanoparticlesSupported Magnetic Carbon Microspheres

作　　者：甄博如 张媛媛 张聪 张升晓[3] ZHEN Boru;ZHANG Yuanyuan;ZHANG Cong;ZHANG Shengxiao(Hua’neng Shandong Power Design Co.LTD,Yantai 264002;Ecological Environment Monitoring Center,Yantai 264000;School of Chemistry and Materials Science,Ludong University,Yantai 264039)

机构地区：[1]华能山东电力设计有限公司,山东烟台264002 [2]山东省烟台生态环境监测中心,山东烟台264000 [3]鲁东大学化学与材料科学学院,山东烟台264039

出　　处：《鲁东大学学报（自然科学版）》2023年第1期83-88,共6页Journal of Ludong University:Natural Science Edition

基　　金：国家自然科学基金(21207059);烟台市科技计划项目(2022XDRH009)。

摘　　要：采用溶剂热法制备纳米四氧化三铁(Fe_(3)O_(4)),其粒径大约在200~300 nm之间,利用聚多巴胺(PDA)对其进行包覆,再在其上原位还原生成金纳米颗粒,制得Fe_(3)O_(4)@PDA@Au复合材料,然后灼烧炭化制得Fe_(3)O_(4)@C@Au,考察其对Hg^(2+)的吸附性能。结果表明Fe_(3)O_(4)@C@Au在溶液pH为1~7的范围内对Hg^(2+)都有较高的吸附容量,其等温吸附符合Langmuir吸附模型,最大吸附容量为473.9 mg·g^(-1),动力学数据符合伪二级动力学模型。该研究为吸附去除Hg^(2+)开辟了新的道路。Fe_(3)O_(4)nanoparticles were prepared by solvothermal method,and its particle size was about 200~300 nm.Fe_(3)O_(4)was encapsulated by polydopamine(PDA),and then gold nanoparticles were modified by in-situ reduction to obtain Fe_(3)O_(4)@PDA@Au,and it was transformed into Fe_(3)O_(4)@C@Au by calcination.The adsorption performance of Hg^(2+)on Fe_(3)O_(4)@C@Au was investigated.The results showed that the adsorption capacity of Hg^(2+)on Fe_(3)O_(4)@C@Au was high in the pH range of 1~7,and the isothermal adsorption data were in accordance with the Langmuir model,and the calculated maximum adsorption capacity was 473.9 mg·g^(-1).The kinetic adsorption data fitted well with the pseudo-second-order kinetic model.The study opens up a new way for the removal of Hg^(2+)by adsorption.

关 键 词：四氧化三铁 金纳米颗粒 Hg^(2+) 吸附 

分 类 号：X52[环境科学与工程—环境工程]