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Citation: Lili Ling, Longfei Liu, Yawei Feng, Jian Zhu, Zhenfeng Bian. Synthesis of TiO₂ mesocrystal film with enhanced photocatalytic activity[J]. Chinese Journal of Catalysis, ;2018, 39(4): 639-645. doi: 10.1016/S1872-2067(17)62980-2 shu

Synthesis of TiO₂ mesocrystal film with enhanced photocatalytic activity

Education Ministry Key and International Joint Lab of Resource Chemistry and Shanghai Key Lab of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China

Received Date: 30 November 2017
Revised Date: 13 December 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (21237003, 21407106, 21522703, 21377088), Shanghai Government (14ZR1430800, 13SG44, 15520711300), International Joint Laboratory on Resource Chemistry (IJLRC), and Ministry of Education of China (PCSIRT_IRT_16R49), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning and Shuguang Research Program of Shanghai Education Committee.

TiO₂ mesocrystals can considerably enhance charge separation owing to their oriented superstructures, with fewer internal defects and porous properties providing more active sites. In this work, we prepared TiO₂ mesocrystal films by a direct annealing method. The morphology and crystal phase of the film were controlled by adjusting the ratio of NH₄F and the calcination temperature. Moreover, we found that Au nanoparticles loaded on a TiO₂ mesocrystal film enabled highly efficient visible light photocatalytic properties. The photocatalytic activities were studied by hydrogen generation and photoreduction of Cr(VI). This work represents a considerable advance in the development and application of the TiO₂ mesocrystals.
- TiO₂ mesocrystals film,
- Photocatalysis,
- Hydrogen generation,
- Cr(VI) reduction
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Synthesis of TiO₂ mesocrystal film with enhanced photocatalytic activity