研究者情報 | 神奈川大学

ホリ　ヒサオ Hori Hisao 堀　久男所属神奈川大学理学部理学科神奈川大学大学院理学研究科理学専攻（化学領域）職種教授
言語種別	英語
発行・発表の年月	2022/05
形態種別	学術雑誌
査読	査読あり
標題	Recovery of platinum and rhenium using selective precipitation induced by two-stage photochemical treatment
執筆形態	共著
掲載区分	国外
出版社・発行元	Elsevier
巻・号・頁	211,pp.105883
著者・共著者	Hisao Hori, Yuki Yonezato, Kei Ito
概要	Platinum(IV) and rhenium(VII) can be selectively recovered as precipitates from aqueous solution by means of UV-visible light irradiation in the presence of 2-propanoland acetone. When an aqueous solution (pH 13.2) containing platinum(IV) (10.9 mM) and rhenium(VII) (11.5 mM) was irradiated with 60 mW cm−2 light for 3 h, 95% of initial platinum content was recovered in the precipitate in its zerovalent state with high selectivity (the recovery efficiency was 24 times that of rhenium), while 96% of the initial rhenium content remained in the reaction solution. To recover the rhenium in the remaining solution, the platinum-containing precipitate was removed, and the collected solution was further irradiated in another photochemical cell. After 12 h of the second irradiation, 82% of the rhenium content in the initial solution (before the first irradiation) was recovered as a precipitate with a recovery efficiency that was 16 times that of platinum.
DOI	10.1016/j.hydromet.2022.105883