Solution-phase synthesis of γ-In2Se3 nanoparticles for highly efficient photocatalytic hydrogen generation under simulated sunlight irradiation

Shuang Yang; Cheng-Yan Xu; Li Yang; Sheng-Peng Hu; Liang Zhen

doi:10.1039/C6RA21784B

Solution-phase synthesis of γ-In₂Se₃ nanoparticles for highly efficient photocatalytic hydrogen generation under simulated sunlight irradiation†

Shuang Yang,^ab Cheng-Yan Xu,*^ab Li Yang,^a Sheng-Peng Hu^abc and Liang Zhen*^ab

* Corresponding authors

^a School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
E-mail: cy_xu@hit.edu.cn, lzhen@hit.edu.cn
Fax: +86-451-8641-3921
Tel: +86-451-8641-2133

^b MOE Key Laboratory of Micro-System and Micro-Structures Manufacturing, Harbin Institute of Technology, Harbin 150080, China

^c School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China

Abstract

Hexagonal indium selenide (γ-In₂Se₃) 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-In₂Se₃ nanoparticles could be obtained at a relatively low temperature of 220 °C. Further increasing the reaction temperature leads to enhanced crystallinity of the γ-In₂Se₃ nanoparticles, which favors improving the photocatalytic activity. The γ-In₂Se₃ 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.

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DOI: https://doi.org/10.1039/C6RA21784B
Article type: Paper
Submitted: 31 Aug 2016
Accepted: 02 Nov 2016
First published: 02 Nov 2016

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RSC Adv., 2016,6, 106671-106675

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Solution-phase synthesis of γ-In₂Se₃ nanoparticles for highly efficient photocatalytic hydrogen generation under simulated sunlight irradiation

S. Yang, C. Xu, L. Yang, S. Hu and L. Zhen, RSC Adv., 2016, 6, 106671 DOI: 10.1039/C6RA21784B

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Solution-phase synthesis of γ-In₂Se₃ nanoparticles for highly efficient photocatalytic hydrogen generation under simulated sunlight irradiation†

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Solution-phase synthesis of γ-In₂Se₃ nanoparticles for highly efficient photocatalytic hydrogen generation under simulated sunlight irradiation

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