Mechanism of gold adsorption by persimmon tannin gel.
نویسندگان
چکیده
Gold adsorption by persimmon tannin (PT) gel from a solution containing hydrogen tetrachloroaurate(III) was examined. A flow-rate examination in a column system indicated the reduction of Au(III) ion to Au(0). XRD patterns clarified the existence of Au(0) on the gel which adsorbed gold. The gel could also adsorb colloidal Au(0) prepared independently. A model consisting of ligand exchange, Au(III) reduction to Au(0), and resulting Au(0) adsorption by PT gel was presented for the gold adsorption mechanism.
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ورودعنوان ژورنال:
- Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
دوره 19 7 شماره
صفحات -
تاریخ انتشار 2003