Knowledge Management System Of Guangzhou Institute of Geochemistry,CAS
Yuan, Weiwei1; Li, Mengyuan2; Chen, Haipeng1; Liu, Guilong1; Liu, Dong2; Chen, Xiangping1; Song, Wenwen1; Su, Yehua3 | |
Preparation of porous CuS/modified-diatomite composite via a facile in situ loading process for efficient recovery of silver ion from aqueous solution | |
Source Publication | APPLIED SURFACE SCIENCE |
ISSN | 0169-4332 |
2024-01-30 | |
Volume | 644Pages:11 |
DOI | 10.1016/j.apsusc.2023.158753 |
Language | 英语 |
WOS Research Area | Chemistry ; Materials Science ; Physics |
Abstract | 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. |
Keyword | CuS/modified-diatomite In situ loading Adsorption Silver ion |
WOS ID | WOS:001102807700001 |
Indexed By | SCI |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.gig.ac.cn/handle/344008/78919 |
Collection | 中国科学院矿物学与成矿学重点实验室 |
Corresponding Author | Yuan, Weiwei |
Affiliation | 1.Luoyang Normal Univ, Coll Chem & Chem Engn, Key Lab Funct Oriented Porous Mat Henan Prov, Luoyang 471934, Peoples R China 2.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 3.Inner Mongolia Shijie Chem Co Ltd, Bayinaobao 014080, Peoples R China |
Recommended Citation 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. |
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