Citation: HE Hui-Juan, ZHANG Bin, ZHONG Zi-Jun, TAN Shao-Zao, HUANG Lang-Huan. Ag-NaTaO₃-RGO Composite: Synthesis and Improved Photocatalytic Hydrogen Production Property[J]. Chinese Journal of Inorganic Chemistry, ;2018, 34(2): 397-403. doi: 10.11862/CJIC.2018.015 shu

Ag-NaTaO₃-RGO Composite: Synthesis and Improved Photocatalytic Hydrogen Production Property

Department of Chemistry, Jinan University, Guangzhou 510632, China

Corresponding author: HUANG Lang-Huan, thuanglh@jnu.edu.cn
Received Date: 11 July 2017
Revised Date: 22 September 2017

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The fabrication and characterization of Ag-NaTaO₃-reduced graphene oxide (RGO) composite as an effective photocatalyst are presented. The Ag-NaTaO₃-RGO composites with enhanced photocatalytic efficiency were synthesized by a three-step method. The photocatalytic activity of the samples was evaluated by photocatalytic water splitting hydrogen-evolution under ultraviolet light irradiation. Compared with NaTaO₃, Ag-NaTaO₃, and NaTaO₃-RGO, the as-prepared 0.2Ag-NaTaO₃-RGO composite exhibits the highest H₂ production rate which was around 5.64, 1.97 and 1.48 times higher than that of pure NaTaO₃, Ag-NaTaO₃ and NaTaO₃-RGO. The enhancement of H₂ production can be mainly attributed to the following three factors:(ⅰ) the efficient separation of electron-hole pairs originated from the excellent electron transfer property of graphene. (ⅱ) the further improvement of electron-hole separation rate due to Ag nanoparticle acted as electron traps. (ⅲ) the enhancement of light absorption over the entire range of wavelengths with the introduction of graphene. In addition, plausible mechanism for the enhanced photocatalytic hydrogen production over the Ag-NaTaO₃-RGO composite was proposed. This work demonstrates that rational composite of two or more phases of semiconductor should be a good strategy to design efficient photocatalysts.
- photocatalysis,
- NaTaO₃,
- graphene,
- hydrogen production,
- Ag nanoparticles
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Ag-NaTaO3-RGO Composite: Synthesis and Improved Photocatalytic Hydrogen Production Property

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Ag-NaTaO₃-RGO Composite: Synthesis and Improved Photocatalytic Hydrogen Production Property