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硫化铜空心纳米球的融硫修饰及其对水中Hg^2+的高选择性吸附富集
引用本文:胡铭华,田华,贺军辉.硫化铜空心纳米球的融硫修饰及其对水中Hg^2+的高选择性吸附富集[J].无机化学学报,2020,36(4):695-702.
作者姓名:胡铭华  田华  贺军辉
作者单位:中国科学院理化技术研究所, 微纳材料与技术研究中心, 功能纳米材料实验室, 北京 100190;中国科学院大学, 北京 100049,中国科学院理化技术研究所, 微纳材料与技术研究中心, 功能纳米材料实验室, 北京 100190,中国科学院理化技术研究所, 微纳材料与技术研究中心, 功能纳米材料实验室, 北京 100190
基金项目:国家重点研发计划项目(No.2017YFA0207102)、国家自然科学基金资助项目(No.91963104,21571182,21271177)、北京市高等学校高水平人才交叉培养"实培计划"和中国科学院光化学转换与功能材料重点实验室资助。
摘    要:通过简单便捷的方法合成出了单质硫改性的CuS空心球纳米材料(CuS@S HSs),并研究了该材料对水中典型重金属污染物Hg^2+的吸附富集性能及机理。研究结果表明,当硫的投料质量比值(wS/wCuS))为30%时,CuS@S HSs对Hg^2+的吸附量高达1207mg·g^-1,较未负载单质硫时提高了229%。CuS@S HSs可以在15 min内将水中超过99%的Hg^2+富集分离。最重要的是,在多种重金属离子(Pb^2+、Ni^2+、Cd^2+、Cr^3+)共存的情况下,CuS@S HSs对Hg^2+表现出优异的单一选择吸附性。

关 键 词:汞离子  硫化铜    吸附  富集
收稿时间:2019/10/25 0:00:00
修稿时间:2020/1/8 0:00:00

Sulfur-Infused Modification and Highly Selective Enrichment of Hg2+ from Aqueous Solutions of CuS Hollow Nanospheres
HU Ming-Hu,TIAN Hua and HE Jun-Hui.Sulfur-Infused Modification and Highly Selective Enrichment of Hg2+ from Aqueous Solutions of CuS Hollow Nanospheres[J].Chinese Journal of Inorganic Chemistry,2020,36(4):695-702.
Authors:HU Ming-Hu  TIAN Hua and HE Jun-Hui
Institution:Functional Nanomaterials Laboratory, Center for Micro/Nanomaterials and Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China,Functional Nanomaterials Laboratory, Center for Micro/Nanomaterials and Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China and Functional Nanomaterials Laboratory, Center for Micro/Nanomaterials and Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Abstract:Sulfur-infused CuS hollow nanospheres (denoted as CuS@S HSs) were synthesized through a facile sublimation method. Compared to pure CuS hollow nanospheres, the sulfur-infused CuS nanospheres exhibited better enrichment performance toward Hg2+, one of the most toxic heavy metal pollutants in the aquatic environment. Under an optimal sulfur mass loading of wS/wCuS=30%, CuS@S HSs exhibited a super mercury adsorption capacity of 1 207 mg·g-1, 229% higher than that without sulfur-infusion. Additionally, CuS@S HSs demonstrated highly rapid removal of Hg2+, over 99% of Hg2+ could be captured just within 3 min. Besides, CuS@S HSs captured Hg2+ selectively among other toxic heavy metal ions such as Pb2+, Ni2+, Cd2+, and Cr3+.
Keywords:mercury ion  copper sulfide  sulfur  adsorption  enrichment
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