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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
发表期刊RARE METALS
ISSN1001-0521
卷号37期号:3页码:196-203
摘要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.
关键词Pgma Microspheres Aucl4- Amino Groups Adsorption Reduction-deposition Elemental Gold
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1007/s12598-017-0992-8
收录类别SCI
语种英语
关键词[WOS]POLY(GLYCIDYL METHACRYLATE) MICROSPHERES ; HIGH-CAPACITY ADSORPTION ; SELECTIVE RECOVERY ; CR(VI) ; POLYMERIZATION ; GOLD(III) ; REMOVAL ; TEMPLATE ; FACILE ; METALS
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号WOS:000427692800004
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/24125
专题研究所(批量导入)
作者单位1.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
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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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