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Preparation of porous CuS/modified-diatomite composite via a facile in situ loading process for efficient recovery of silver ion from aqueous solution

文献类型：期刊论文

作者Yuan, Weiwei1; Li, Mengyuan3; Chen, Haipeng1; Liu, Guilong1; Liu, Dong3; Chen, Xiangping1; Song, Wenwen1; Su, Yehua2
刊名APPLIED SURFACE SCIENCE
出版日期2024-01-30
卷号644页码:11
关键词CuS/modified-diatomite In situ loading Adsorption Silver ion
ISSN号0169-4332
DOI10.1016/j.apsusc.2023.158753
英文摘要The study on the recovery of silver ion (Ag+) from silver-containing wastewater is of great significance to heavy metal pollution control and noble metal retrieval. In this work, a porous CuS/modified-diatomite composite was prepared via a pre-modification followed by a mild in situ coating process. A layer of CuS nanosheets was evenly coated onto pre-modified diatomite, and porosity of the diatomite support reserved. Aperture analysis results suggested that the composite possessed a broader porous distribution, higher specific surface area and pore volume than pure CuS. The neosynthetic composite exhibited outstanding adsorption performance for Ag+, according to the Langmuir adsorption isotherm model, with a maximum adsorption capacity of 822.7 mg/g for Ag+, approximately 84 times greater than that of raw diatomite (9.87 mg/g). The highest removal efficiency of the composite for Ag+ reached 99.9 %, and pH values (3-8) and coexisting ions (Na+, K+, Ca2+ and Mg2+) had little influence on the removal of Ag+. Kinetic studies and adsorption product analysis demonstrated that removal of Ag+ on the composite was occupied by chemisorption, arising from that the abundant porosity of diatomite support prompts Ag+ to diffuse onto the composite, and the uniformly coated CuS nanosheets provide abundant active sites for Ag+ chemisorption.
WOS研究方向Chemistry ; Materials Science ; Physics
语种英语
WOS记录号WOS:001102807700001
源URL[http://ir.gig.ac.cn/handle/344008/78918]  
专题中国科学院矿物学与成矿学重点实验室
通讯作者Yuan, Weiwei
作者单位1.Luoyang Normal Univ, Coll Chem & Chem Engn, Key Lab Funct Oriented Porous Mat Henan Prov, Luoyang 471934, Peoples R China
2.Inner Mongolia Shijie Chem Co Ltd, Bayinaobao 014080, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Ctr Excellence Deep Earth Sci, CAS Key Lab Mineral & Metallogeny,Guangdong Prov K, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Yuan, Weiwei,Li, Mengyuan,Chen, Haipeng,et al. Preparation of porous CuS/modified-diatomite composite via a facile in situ loading process for efficient recovery of silver ion from aqueous solution[J]. APPLIED SURFACE SCIENCE,2024,644:11.
APA Yuan, Weiwei.,Li, Mengyuan.,Chen, Haipeng.,Liu, Guilong.,Liu, Dong.,...&Su, Yehua.(2024).Preparation of porous CuS/modified-diatomite composite via a facile in situ loading process for efficient recovery of silver ion from aqueous solution.APPLIED SURFACE SCIENCE,644,11.
MLA Yuan, Weiwei,et al."Preparation of porous CuS/modified-diatomite composite via a facile in situ loading process for efficient recovery of silver ion from aqueous solution".APPLIED SURFACE SCIENCE 644(2024):11.

入库方式： OAI收割

来源：广州地球化学研究所

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