Citation: Shen Yan-Fei, Zhang Cheng, Yan Chun-Guang, Chen Hui-Qin, Zhang Yuan-Jian. Fabrication of porous graphitic carbon nitride-titanium dioxide heterojunctions with enhanced photo-energy conversion activity[J]. Chinese Chemical Letters, ;2017, 28(6): 1312-1317. doi: 10.1016/j.cclet.2017.04.004 shu

Fabrication of porous graphitic carbon nitride-titanium dioxide heterojunctions with enhanced photo-energy conversion activity

a.
Medical School, Southeast University, Nanjing 210009, China
b.
School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210098, China
c.
Department of Electronic Engineering, Southeast University Chengxian Colleage, Nanjing 210088, China

Corresponding author: Shen Yan-Fei, Yanfei.Shen@seu.edu.cn
Received Date: 3 January 2017
Revised Date: 21 February 2017
Accepted Date: 4 April 2017
Available Online: 4 June 2017

Figures(6)

Porous graphite-phase polymeric carbon nitride (GPPCN)/TiO₂ donor-acceptor heterojunction was facilely fabricated through the combination of a template technique with a co-calcination process, which exhibited much higher photoelectric activity compared to pristine carbon nitride and TiO₂. The precursor of porous GPPCN (pGPPCN), porous melem, was prepared by using a green template, calcium carbonate, which could be easily removed by diluted hydrochloride. The pGPPCN/TiO₂ heterojunction was then obtained by the assembly and subsequent co-calcination of TiO₂ nanoparticles with porous melem. The formation of pGPPCN/TiO₂ donor-acceptor heterojunction prepared by this method showed improved surface area and light absorption. Moreover, the composite presented much higher photo-energy conversion activity than those of GPPCN, pGPPCN and TiO₂, which could be mainly ascribed to the high charge carrier separation efficiency. This study provides a new approach for the design and development of various photocatalysts with high efficiency for applications in energy fields.
- Carbon nitride,
- TiO₂,
- Semiconductor,
- Photoelectrochemistry,
- 7Heterojunction
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