Citation: 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. doi: 10.11862/CJIC.2019.162 shu

Preparation of Coral-like Rutile Titania with Enhanced Photocatalytic Activity under UV and Visible Light

ZHU Jie ^1,, ,
GE Feng-Juan ¹ ,
CHEN Yan ¹ ,
XU Yan ¹ ,
ZHANG Xue-Yang ² ,
ZOU Wei-Xin ³ ,
DONG Lin ^3,,

1.
School of Chemistry and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu 221111, China
2.
School of Environmental Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu 221111, China
3.
Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

Corresponding author: ZHU Jie, zhujie19@qq.com DONG Lin, donglin@nju.edu.cn
Received Date: 21 January 2019
Revised Date: 22 May 2019

Figures(6)

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.
- solvothermal,
- rutile titania,
- heterogeneous catalysis,
- water splitting,
- photolysis,
- hydrogen generation
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