Photocatalytic recovery of noble metals from waste solutions using a polyoxometallate (POM)-based hybrid photocatalyst

Tetsuya Kida, Hiromasa Matsufuji, Masayoshi Yuasa, Kengo Shimanoe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We attempted the photo-chemical recovery of noble metals from solutions using inorganic-organic hybrid photocatalysts based on polyoxometallates (POMs) such as PMo12O40 3-, SiW12O40 4-, and γ-SiW10O36 8- coupled with a cationic surfactant, dimethyldioctadecylammonium (DODA). We also used γ-SiW10O36-O(SiC18H37)2 as a photocatalyst. The four different photocatalysts dissolved in chloroform successfully photoreduced gold ions dissolved in water in a two-phase (chloroform/water) system under UV irradiation (λ< 475 nm). The γ-SiW10O36/DODA photocatalyst exhibited the best activity and was able to recover gold from solution. It was suggested that one-electron reduced γ-SiW10O36 9-, which was formed by UV irradiation, reduced gold ions to produce large two-dimensional particles. The formation of sheet-like particles indicates that the reduction of gold ions occurred at the interface between chloroform and water.

Original languageEnglish
Title of host publicationMulti-Functional Materials and Structures IV
Pages518-521
Number of pages4
DOIs
Publication statusPublished - Oct 4 2013
Event4th International Conference on Multi-Functional Materials and Structures, MFMS 2013 - Sathorn-Taksin, Bangkok, Thailand
Duration: Jul 14 2013Jul 17 2013

Publication series

NameAdvanced Materials Research
Volume747
ISSN (Print)1022-6680

Other

Other4th International Conference on Multi-Functional Materials and Structures, MFMS 2013
CountryThailand
CitySathorn-Taksin, Bangkok
Period7/14/137/17/13

Fingerprint

Photocatalysts
Precious metals
Chlorine compounds
Gold
Recovery
Ions
Irradiation
Water
Cationic surfactants
Electrons

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Kida, T., Matsufuji, H., Yuasa, M., & Shimanoe, K. (2013). Photocatalytic recovery of noble metals from waste solutions using a polyoxometallate (POM)-based hybrid photocatalyst. In Multi-Functional Materials and Structures IV (pp. 518-521). (Advanced Materials Research; Vol. 747). https://doi.org/10.4028/www.scientific.net/AMR.747.518

Photocatalytic recovery of noble metals from waste solutions using a polyoxometallate (POM)-based hybrid photocatalyst. / Kida, Tetsuya; Matsufuji, Hiromasa; Yuasa, Masayoshi; Shimanoe, Kengo.

Multi-Functional Materials and Structures IV. 2013. p. 518-521 (Advanced Materials Research; Vol. 747).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kida, T, Matsufuji, H, Yuasa, M & Shimanoe, K 2013, Photocatalytic recovery of noble metals from waste solutions using a polyoxometallate (POM)-based hybrid photocatalyst. in Multi-Functional Materials and Structures IV. Advanced Materials Research, vol. 747, pp. 518-521, 4th International Conference on Multi-Functional Materials and Structures, MFMS 2013, Sathorn-Taksin, Bangkok, Thailand, 7/14/13. https://doi.org/10.4028/www.scientific.net/AMR.747.518
Kida T, Matsufuji H, Yuasa M, Shimanoe K. Photocatalytic recovery of noble metals from waste solutions using a polyoxometallate (POM)-based hybrid photocatalyst. In Multi-Functional Materials and Structures IV. 2013. p. 518-521. (Advanced Materials Research). https://doi.org/10.4028/www.scientific.net/AMR.747.518
Kida, Tetsuya ; Matsufuji, Hiromasa ; Yuasa, Masayoshi ; Shimanoe, Kengo. / Photocatalytic recovery of noble metals from waste solutions using a polyoxometallate (POM)-based hybrid photocatalyst. Multi-Functional Materials and Structures IV. 2013. pp. 518-521 (Advanced Materials Research).
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