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Photoinduced gold recovery mediated by isopolymolybdate in strongly acidic HCl/NaCl solutions
https://repo.qst.go.jp/records/76414
https://repo.qst.go.jp/records/76414b3246ed2-9c92-4c42-9590-feeab8e99467
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-07-26 | |||||
| タイトル | ||||||
| タイトル | Photoinduced gold recovery mediated by isopolymolybdate in strongly acidic HCl/NaCl solutions | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Nakanishi, Ryuzo
× Nakanishi, Ryuzo× Saeki, Morihisa× Taguchi, Tomitsugu× Ohba, Hironori× Nakanishi, Ryuzo× Saeki, Morihisa× Taguchi, Tomitsugu× Oba, Hironori |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The laser-induced formation of gold nanoparticles (AuNPs) was studied in hydrochloric acid solutions containing isopolymolybdate. Aqueous solutions of HAuCl4 (0.5 mM) in HCl (0.1–1.0 M)/NaCl media containing ethanol (0.5% v/v) were irradiated with 355 nm laser pulses in the absence or presence of molybdate. The reaction progress was probed by UV-vis spectroscopy. Without molybdate, the formation of AuNPs is significantly hindered because a large excess of Cl− renders the AuCl4− precursor resistant to direct photoreduction with ethanol. The incorporation of molybdate into solution effectively mediates the photoinduced formation of AuNPs in 0.1–0.5 M HCl. For this range of acidity, photoirradiation generates the molybdenum blue (MB) species from the reaction of photoexcited Mo36O1128− (polyoxoanions) with ethanol, followed by the reduction of AuCl4− with the MB species. At a higher acidity, the formation of AuNPs is virtually undetectable because the MB species are no longer generated due to the absence of anionic molybdate precursors. | |||||
| 書誌情報 |
Journal of Photochemistry and Photobiology A: Chemistry 巻 383, p. 111994, 発行日 2019-10 |
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| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1010-6030 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.jphotochem.2019.111994 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.sciencedirect.com/science/article/abs/pii/S1010603019305404 | |||||
