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| Preparation of Coral-like Rutile Titania with Enhanced Photocatalytic Activity under UV and Visible Light |
| Author Name | Affiliation | E-mail | | ZHU Jie | School of Chemistry and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu 221111, China | zhujie19@qq.com | | GE Feng-Juan | School of Chemistry and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu 221111, China | | | CHEN Yan | School of Chemistry and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu 221111, China | | | XU Yan | School of Chemistry and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu 221111, China | | | ZHANG Xue-Yang | School of Environmental Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu 221111, China | | | ZOU Wei-Xin | Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China | | | DONG Lin | Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China | donglin@nju.edu.cn |
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| Abstract: Coral-like rutile titania (Rut-dg) was synthesized by solvothermal method in diethylene glycol solution. Scanning electron microscope (SEM) and X-ray diffraction (XRD) indicated the spherical particles were homogeneously dispersed with the diameter about 1 μm, consisting regular arranged branches on the surface with diameter less than 10 nm. The BET surface area was as large as 228 m2·g-1, more than 7 times of commercial rutile titania sample. Given its unique morphology, the Rut-dg showed superior photocatalytic activity with hydrogen evolution 25 000 μmol·g-1·h-1 under ultraviolet irradiation, 50% higher than P25 and 13 times of commercial rutile sample. The hydrogen production under visible light was 270 μmol·g-1·h-1, while P25 and commercial rutile had no obvious activity. Further investigation demonstrated that no organics could be detected on the surface of Rut-dg, indicating the coral-like structures played the key role for the photocatalytic activity. After calcined at 300℃, the coral-like structures were sintered obviously and the surface area decreased by 50%. Meanwhile, the hydrogen production decreased by 15%~25%, also implying that the coral-like structures facilitated the hydrogen production dramatically. |
| Keywords: solvothermal rutile titania heterogeneous catalysis water splitting photolysis hydrogen generation |
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| ZHU Jie,GE Feng-Juan,CHEN Yan,XU Yan,ZHANG Xue-Yang,ZOU Wei-Xin,DONG Lin.Preparation of Coral-like Rutile Titania with Enhanced Photocatalytic Activity under UV and Visible Light[J].Chinese Journal of Inorganic Chemistry,2019,35(8):1470-1476. |
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