期刊
LANGMUIR
卷 35, 期 3, 页码 779-786出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.8b03867
关键词
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资金
- National Natural Science Foundation of China [51572239, 51372224, 91333203]
- Program for Innovative Research Team in University of Ministry of Education of China [IRT13037]
- National Science and Technology Support Program [2012BAC08B08]
- Major Project of Zhejiang Natural Science Foundation of China [LD18E020002]
In this work, g-C3N4@TiO2 nanostructures with hollow sphere morphology, small grain size, high crystalline quality, and high surface area are successfully synthesized by the annealing method using melamine and hollowsphere precursor, which could be a universal method to synthesis hollow sphere nanoheterojunction. Excellent photocatalytic property was observed from the as prepared g-C3N4@TiO2 nanostructure with 466.43 mu mol.g(-1).h(-1) hydrogen generation rate under visible light irradiation (>420 nm), which was 5.5 times as much as the control couple, nanoparticle nanoheterojunction g-C3N4@TiO2. No apparent deactivation was found during the follow-up cycle performance test. The special morphology and the heterojunction construction contribute to both visible light absorption and photogenerated electron hole pair separation efficiency and finally to the photocatalytic property. The content of g-C3N4 was proved to be an important parameter for the promotion of the photocatalytic property. Overlarge content may lead to lower photogenerated electron hole pair separation efficiency.
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