IGGCAS OpenIR  > 岩石圈演化国家重点实验室
Selective adsorption and recovery of precious metal ions from water and metallurgical slag by polymer brush graphene-polyurethane composite
Xue, Dingshuai1; Li, Ting2; Liu, Yanhong1; Yang, Yueheng1; Zhang, Yuxing1; Cui, Jun3; Guo, Dongben3
2019-03-01
Source PublicationREACTIVE & FUNCTIONAL POLYMERS
ISSN1381-5148
Volume136Pages:138-152
AbstractAchieving flexible composite materials with high selectivity and adsorption capacity for gold and platinum group elements remains a challenging endeavor. In this study, a series of polyurethane foam (PUF) composites was synthesized using PUF as matrix. Scanning electron microscopy, Raman spectra, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy survey spectra, contact angle, and Brunauer-Emmett-Teller specific surface area were used for characterization. Solid-phase extraction of precious metal ions from acidic chloride solutions was performed via batch experiments. Results showed that cysteine polymer brush-grafted PDA@GPUF (poly-Cys-g-PDA@GPUF) contained a high concentration of hydroxyl, imine, and thiol groups on the surface, which endowed the composite with high separation performance for Au(III), Pd(II), Pt(IV), and Ru(III). Batch adsorption studies for poly-Cys-g-PDA@GPUF were performed with various parameters, such as solution pH, contact time, initial metal ion concentration, and temperature. The maximum adsorption capacity was found at pH 0 for Au(III), Pd (II), and Pt(IV) and at pH 3.0 for Ru(III). Langmuir, Freundlich, and Dubinin-Radushkevich isotherm models were applied to analyze the experimental data. The best interpretation for the experimental data was given by the Langmuir isotherm. The effects of solution acidity, contact time, initial concentration of metal ions, temperature, coexisting ions, and recovery behavior were reported. Pseudo-first-order, pseudo-second-order, and intraparticle diffusion models were used to determine the kinetic data. The pseudo-second-order kinetic model fitted the experimental data. Thermodynamic parameters, such as enthalpy (Delta H-0), Gibbs' free energy (Delta G(0)), and entropy (Delta S-0), were calculated for poly-Cys-g-PDA@GPUF. Poly-Cys-g-PDA@GPUF as solid-phase extractant was successfully applied for the preconcentration of Au(III), Pd(II), Pt(IV), and Ru(III) in aqueous samples, metallurgical slag, and certified sample with satisfactory results.
DOI10.1016/j.reactfunctpolym.2018.12.026
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordSOLID-PHASE EXTRACTION ; PLATINUM-GROUP METALS ; ATOMIC-ABSORPTION-SPECTROMETRY ; RARE-EARTH-ELEMENTS ; ACTIVATED CARBON ; GEOLOGICAL SAMPLES ; PERSIMMON TANNIN ; HIGHLY EFFICIENT ; OXIDE ; SEPARATION
Language英语
Funding ProjectNational Natural Science Foundation of China[41403021] ; National Natural Science Foundation of China[41525012] ; National Natural Science Foundation of China[41703021]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaChemistry ; Engineering ; Polymer Science
WOS SubjectChemistry, Applied ; Engineering, Chemical ; Polymer Science
WOS IDWOS:000459841700015
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90887
Collection岩石圈演化国家重点实验室
Corresponding AuthorXue, Dingshuai
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Capital Med Univ, Sch Publ Hlth, Beijing 100069, Peoples R China
3.Jilin Jien Nickel Ind Co LTD, Changchun 132311, Peoples R China
Recommended Citation
GB/T 7714
Xue, Dingshuai,Li, Ting,Liu, Yanhong,et al. Selective adsorption and recovery of precious metal ions from water and metallurgical slag by polymer brush graphene-polyurethane composite[J]. REACTIVE & FUNCTIONAL POLYMERS,2019,136:138-152.
APA Xue, Dingshuai.,Li, Ting.,Liu, Yanhong.,Yang, Yueheng.,Zhang, Yuxing.,...&Guo, Dongben.(2019).Selective adsorption and recovery of precious metal ions from water and metallurgical slag by polymer brush graphene-polyurethane composite.REACTIVE & FUNCTIONAL POLYMERS,136,138-152.
MLA Xue, Dingshuai,et al."Selective adsorption and recovery of precious metal ions from water and metallurgical slag by polymer brush graphene-polyurethane composite".REACTIVE & FUNCTIONAL POLYMERS 136(2019):138-152.
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