Solution-phase synthesis of γ-In 2 Se 3 nanoparticles for highly efficient photocatalytic hydrogen generation under simulated sunlight irradiation

Hexagonal indium selenide (γ-In 2 Se 3 ) nanoparticles were successfully synthesized by a hot-injection method using triethylene glycol as a solvent. The structure and morphology of the obtained nanoparticles were characterized by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS...

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Bibliographic Details
Published in:RSC advances 2016, Vol.6 (108), p.106671-106675
Main Authors: Yang, Shuang, Xu, Cheng-Yan, Yang, Li, Hu, Sheng-Peng, Zhen, Liang
Format: Article
Language:English
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Summary:Hexagonal indium selenide (γ-In 2 Se 3 ) nanoparticles were successfully synthesized by a hot-injection method using triethylene glycol as a solvent. The structure and morphology of the obtained nanoparticles were characterized by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Phase-pure γ-In 2 Se 3 nanoparticles could be obtained at a relatively low temperature of 220 °C. Further increasing the reaction temperature leads to enhanced crystallinity of the γ-In 2 Se 3 nanoparticles, which favors improving the photocatalytic activity. The γ-In 2 Se 3 nanoparticles synthesized at 250 °C exhibit excellent and stable photocatalytic hydrogen generation under simulated sunlight irradiation, which might be attributed to the strong absorbance both in the UV and visible light regions as well as their nano-sized morphology.
ISSN:2046-2069
2046-2069
DOI:10.1039/C6RA21784B