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

Hexagonal indium selenide ( gamma -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 (X...

Full description

Saved in:
Bibliographic Details
Published in:RSC advances 2016-01, Vol.6 (108), p.106671-106675
Main Authors: Yang, Shuang, Xu, Cheng-Yan, Yang, Li, Hu, Sheng-Peng, Zhen, Liang
Format: Article
Language:English
Subjects:
Hydrogen
Morphology
Nanoparticles
Photocatalysis
Sunlight
Synthesis
Transmission electron microscopy
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Hexagonal indium selenide ( gamma -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 gamma -In2Se3 nanoparticles could be obtained at a relatively low temperature of 220 degree C. Further increasing the reaction temperature leads to enhanced crystallinity of the gamma -In2Se3 nanoparticles, which favors improving the photocatalytic activity. The gamma -In2Se3 nanoparticles synthesized at 250 degree 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
DOI:10.1039/c6ra21784b