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Affinitive Poly(vinylidene difluoride) Membranes for Enhancing Au(III) Separation with Extremely High Selectivity
Wang, XM; Li, L; Yang, CF; Wang, Xiaomin; Li, Lei; Yang, Chuanfang
2018
Source PublicationCHEMICAL ENGINEERING & TECHNOLOGY
ISSN0930-7516
Volume41Issue:2Pages:327
Abstract

Thiourea-poly(vinylidene difluoride) (Th-PVDF) resin was synthesized and then cast into affinitive microporous membranes for Au(III) adsorption. The addition degree of thiourea to the resin was promoted from 22.6% to 36.3% when using NaOH as the catalyst. Higher addition degrees resulted in enhanced resin adsorption capacity. It also led to increased membrane hydrophilicity, higher membrane loading capacity, and membrane utilization efficiency. The membrane exhibited an extremely high selectivity toward Au(III) over other metal ions, and was easily regenerated for reuse without performance deterioration within four adsorption-regeneration cycles. X-Ray photoelectron spectroscopy (XRS) analysis and scanning electron microscopy (SEM) observation revealed that Au(III) was partially bonded to the membrane as gold chloride and partially reduced to Au(0) as gold particles.

Other Abstract

The authors gratefully acknowledge the support for this study provided by the National Natural Science Foundation of China (21506222, 21706259), Chinese Academy of Sciences under the talented program, and the Youth Fund of GPE, CAS (GPE201405).

KeywordAffinitive Membrane Aqueous-solutions Gold Adsorption Copper Ions Grafting Degree Adsorption Thiourea-pvdf Resin Gold Chromatography Recovery Oxidation Lead
SubtypeArticle
DOI10.1002/ceat.201700479
Funding OrganizationNational Natural Science Foundation of China [21506222, 21706259] ; Chinese Academy of Sciences ; GPE, CAS [GPE201405]
WOS IDWOS:000423523200014
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26815
Collection中国科学院过程工程研究所
Recommended Citation
GB/T 7714
Wang, XM,Li, L,Yang, CF,et al. Affinitive Poly(vinylidene difluoride) Membranes for Enhancing Au(III) Separation with Extremely High Selectivity[J]. CHEMICAL ENGINEERING & TECHNOLOGY,2018,41(2):327.
APA Wang, XM,Li, L,Yang, CF,Wang, Xiaomin,Li, Lei,&Yang, Chuanfang.(2018).Affinitive Poly(vinylidene difluoride) Membranes for Enhancing Au(III) Separation with Extremely High Selectivity.CHEMICAL ENGINEERING & TECHNOLOGY,41(2),327.
MLA Wang, XM,et al."Affinitive Poly(vinylidene difluoride) Membranes for Enhancing Au(III) Separation with Extremely High Selectivity".CHEMICAL ENGINEERING & TECHNOLOGY 41.2(2018):327.
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