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Spontaneous formation of gold microplates during reduction‐coupled removal of noble metals using D owex M 4195 resin
Author(s) -
JermakowiczBartkowiak Dorota,
Cyganowski Piotr,
Leśniewicz Anna,
Tylus Wlodzimierz,
Chȩcmanowski Jacek,
Marcinowska Anna
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.42425
Subject(s) - sorption , x ray photoelectron spectroscopy , fourier transform infrared spectroscopy , rhenium , adsorption , materials science , chemistry , raman spectroscopy , nuclear chemistry , chemical engineering , inorganic chemistry , physics , optics , engineering
The present work reports the novel phenomenon of spontaneous formation of gold microplates. The effect is observed as a consequence ofAuCl 4 − ,PtCl 6 2 −,PdCl 4 2 −, andReO 4 −sorption on the Dowex M4195 resin. Therefore an attempt to explain the phenomenon mechanism is made. The research is covering sorption, kinetic and thermodynamic studies. The shapes of formed gold single plates are determined. The uptakes of Au(III), Pt(IV), Pd(II), and Re(VII) tests have been conducted using a batch method from single‐component metals solutions in 0.1 M HCl. The sorption‐reduction phenomenon has been assessed by executed SEM, FTIR, XRD, and XPS studies. The greatest sorption capacity, combined with reduction‐coupled removal phenomenon, has been achieved for gold (5.5 mmol Au·g −1 at 9°C). Executed SEM and XRD analyzes prove formation of gold single crystals during present process, furthermore reduction of rhenium is indicated by XPS analysis. Based on the obtained FTIR and Raman's spectra, the reduction phenomenon is probably followed by resins’ functional groups oxidation. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42425.