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Adsorption of Au(III) by amino-modified monodispersed PGMA microspheres and deposition of gold nanoparticles
Wang, Fu-Chun1; Zhao, Jun-Mei2; Wang, Wan-Kun1; Tong, Zi-Zheng2
2018-03-01
Source PublicationRARE METALS
ISSN1001-0521
Volume37Issue:3Pages:196-203
Abstract

Monodispersed poly(glycidyl methacrylate) (PGMA) microspheres with various amounts of amino groups (PGMA-NH2) were used to adsorb Au(III) from simulated wastewaters. Gold nanoparticle-coated PGMA functional microspheres can be directly obtained via the adsorption process. The adsorption kinetics follows pseudo-second model, and 10 min is enough for reaching at equilibrium. The adsorption isotherm follows Langmuir model, and the adsorption amounts for Au(III) are 8.25 and 21.75 mol center dot kg(-1) at 298 and 328 K, respectively. The relative separation coefficients between Au(III), Pt(VI), Pd(II) and Co(II), Cu(II), Ni(II), Fe(III) are all higher than 100 when 1 < pH < 3. Furthermore, the characterization analysis of X-ray diffraction (XRD), thermogravimetry-differential scanning calorimetry (TG-DSC), scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR) confirms that AuCl4 (-) has been reduced to Au-0 nanoparticles and deposited onto the surface of PGMA-NH2. The current work shows a good prospect for PGMA-NH2 to be a valid adsorbent for the recovery of gold and the possible fabrication of gold nanoparticles by reduction-deposition process without any reductant.

KeywordPgma Microspheres Aucl4- Amino Groups Adsorption Reduction-deposition Elemental Gold
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1007/s12598-017-0992-8
Indexed BySCI
Language英语
WOS KeywordPoly(Glycidyl Methacrylate) Microspheres ; High-capacity Adsorption ; Selective Recovery ; Cr(Vi) ; Polymerization ; Gold(Iii) ; Removal ; Template ; Facile ; Metals
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000427692800004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24125
Collection研究所(批量导入)
Affiliation1.Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Fu-Chun,Zhao, Jun-Mei,Wang, Wan-Kun,et al. Adsorption of Au(III) by amino-modified monodispersed PGMA microspheres and deposition of gold nanoparticles[J]. RARE METALS,2018,37(3):196-203.
APA Wang, Fu-Chun,Zhao, Jun-Mei,Wang, Wan-Kun,&Tong, Zi-Zheng.(2018).Adsorption of Au(III) by amino-modified monodispersed PGMA microspheres and deposition of gold nanoparticles.RARE METALS,37(3),196-203.
MLA Wang, Fu-Chun,et al."Adsorption of Au(III) by amino-modified monodispersed PGMA microspheres and deposition of gold nanoparticles".RARE METALS 37.3(2018):196-203.
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