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Substitutionally rhodium(IV)-doped titania showing photocatalytic activity toward organics oxidation under visible-light irradiation
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| Title: | Substitutionally rhodium(IV)-doped titania showing photocatalytic activity toward organics oxidation under visible-light irradiation |
| Authors: | Yang, Shubin Browse this author | | Ohtani, Bunsho Browse this author →KAKEN DB |
| Keywords: | Titania | | Rhodium(IV) doping | | Photocatalysis | | Visible-light irradiation |
| Issue Date: | 15-Nov-2021 |
| Publisher: | Elsevier |
| Journal Title: | Catalysis today |
| Volume: | 380 |
| Start Page: | 25 |
| End Page: | 31 |
| Publisher DOI: | 10.1016/j.cattod.2021.06.001 |
| Abstract: | In this study, an aqueous solution containing rhodium(IV) (Rh(IV)) was prepared by oxidation of rhodium(III) (Rh(III)) with solid sodium bismuthate in nitric acid and then used as a medium for hydrothermal titania preparation to obtain rhodium-doped titania (Rh-TiO2) composite. Rh(IV) species were observed in Rh-TiO2 in XPS analysis. Effect of rhodium/titanium molar ratio (Rh/Ti) on the photocatalytic activity was studied. The obtained characteristics suggest successful rhodium substitution and doping of titania to give visible-light absorption. The Rh-TiO2 composite exhibits enhanced photocatalytic activity for acetic acid decomposition and 2propanol oxidation under UV-vis (> 290 nm) and visible-light (> 450 nm) irradiation, respectively. The enhanced photocatalytic activity is attributable to the visible-light absorption induced by rhodium doping. These results indicate that Rh-TiO2 photocatalyst materials could be promising materials for high-efficiency photooxidation reactions under visible-light irradiation. |
| Rights: | © [2021]. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/90699 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 大谷 文章
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