Surfactant-bridged forming of core-shell NaNbO3@g-C3N4 microcuboid: An approach to produce semiconductor heterojunction
Yu Qiu,
Hanyou Zhang,
Hao Xiong,
Ping Li,
Lingyan Lin,
Bo Wu,
Zhenjing Kang,
Linqin Jiang
Affiliations
Yu Qiu
Provincial Key Laboratory of Green Perovskites Application of Fujian Universities, Fujian Jiangxia University, Fuzhou, 350108, China; Institute of Advanced Energy and Semiconductor Technology, Fujian Jiangxia University, Fuzhou, 350108, China; Corresponding author. Provincial Key Laboratory of Green Perovskites Application of Fujian Universities, Fujian Jiangxia University, Fuzhou 350108, China.
Hanyou Zhang
College of Physics and Information Engineering, Fuzhou University, Fuzhou, 350108, China
Hao Xiong
Provincial Key Laboratory of Green Perovskites Application of Fujian Universities, Fujian Jiangxia University, Fuzhou, 350108, China
Ping Li
Provincial Key Laboratory of Green Perovskites Application of Fujian Universities, Fujian Jiangxia University, Fuzhou, 350108, China; Institute of Advanced Energy and Semiconductor Technology, Fujian Jiangxia University, Fuzhou, 350108, China
Lingyan Lin
Provincial Key Laboratory of Green Perovskites Application of Fujian Universities, Fujian Jiangxia University, Fuzhou, 350108, China; Institute of Advanced Energy and Semiconductor Technology, Fujian Jiangxia University, Fuzhou, 350108, China
Bo Wu
Multiscale Computational Materials Facility, School of Materials Science and Engineering, Fuzhou University, Fuzhou, 350100, China
Zhenjing Kang
Provincial Key Laboratory of Green Perovskites Application of Fujian Universities, Fujian Jiangxia University, Fuzhou, 350108, China
Linqin Jiang
Provincial Key Laboratory of Green Perovskites Application of Fujian Universities, Fujian Jiangxia University, Fuzhou, 350108, China; Corresponding author.
The separation of photoexcited carriers affects critically the photoelectric properties of semiconductor materials. Heterostructure forming between suitable semiconductors can drive effectively the carriers towards different directions at the interface thus promote the separation. In this research, various surfactants, including anionic sodium dodecyl sulphate, cationic polyethylenediamine and hexadecyltrimethylammonium bromide (CTAB), were applied to fabricate perovskite NaNbO3@graphitic carbon nitride (g-C3N4) heterostructures and the resulting photoelectric performances were compared. In the presence of CTAB, a core-shell microstructure with uniform g-C3N4 coating on NaNbO3 microcuboid was obtained and exhibited the highest photocatalytic, which is 33 times higher than that of pure NaNbO3, as well as the highest photoresponse properties among all the synthesized structures. The formation mechanism of core-shell NaNbO3@g-C3N4 composite and reasons for the photoelectric property enhancement were discussed based on the heterostructure model. Our results propose that surfactant-assisted method can provide a feasible approach to fabricate the semiconductor heterojunction by bridging the constructing components.
