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Effects of Au loading, catalyst dosage and types of hole scavenger on the photocatalytic gold recovery were investigated under ultraviolet\u2013visible (UV\u2013Vis) light irradiation at room temperature. It was found that different Au loadings tuned the light absorption capacity of the synthesized photocatalysts and enhanced the photocatalytic activity in comparison with the bare TiO\n                    <jats:sub>2<\/jats:sub>\n                    NPs. The addition of CH\n                    <jats:sub>3<\/jats:sub>\n                    OH, C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>5<\/jats:sub>\n                    OH, C\n                    <jats:sub>3<\/jats:sub>\n                    H\n                    <jats:sub>8<\/jats:sub>\n                    O, and Na\n                    <jats:sub>2<\/jats:sub>\n                    S\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>3<\/jats:sub>\n                    as a hole scavenger significantly promoted the photocatalytic activity of the gold recovery, while the H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    did not. Among different hole scavengers employed in this work, the CH\n                    <jats:sub>3<\/jats:sub>\n                    OH exhibited the highest capability to promote the photocatalytic gold recovery. In summary, the Au\n                    <jats:sub>0.5<\/jats:sub>\n                    \/TiO\n                    <jats:sub>2<\/jats:sub>\n                    NPs exhibited the best photocatalytic activity to completely recover gold ions within 30\u00a0min at the catalyst dosage of 0.5\u00a0g\/L, light intensity of 3.20 mW\/cm\n                    <jats:sup>2<\/jats:sup>\n                    in the presence of 20 vol% CH\n                    <jats:sub>3<\/jats:sub>\n                    OH as hole scavenger. The photocatalytic activity slightly decreased after the 5th cycle of recovery process, indicating its high reusability.\n                  <\/jats:p>","DOI":"10.1038\/s41598-022-24290-7","type":"journal-article","created":{"date-parts":[[2022,12,19]],"date-time":"2022-12-19T13:23:36Z","timestamp":1671456216000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":33,"title":["Photosynthesis of Au\/TiO2 nanoparticles for photocatalytic gold recovery from industrial gold-cyanide plating wastewater"],"prefix":"10.1038","volume":"12","author":[{"given":"Naphaphan","family":"Kunthakudee","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Prakorn","family":"Ramakul","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karn","family":"Serivalsatit","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mali","family":"Hunsom","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2022,12,19]]},"reference":[{"key":"24290_CR1","unstructured":"Yongpisanphob, W. 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