Open AccessHydrothermal synthesis of SnO 2 –Zn 2 SnO 4 –graphene composites with high activity for photodegradation of rhodamine B
Author(s) -
Wang Yan,
Li Gaojie,
Cao Jianliang
Publication year - 2015
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2015.0114
Subject(s) - rhodamine b , photodegradation , photocatalysis , materials science , raman spectroscopy , graphene , catalysis , hydrothermal circulation , aqueous solution , composite number , chemical engineering , x ray photoelectron spectroscopy , nuclear chemistry , photochemistry , composite material , nanotechnology , chemistry , organic chemistry , engineering , physics , optics
The SnO 2 –Zn 2 SnO 4 –graphene composite photocatalysts were successfully prepared by a facile hydrothermal reaction method in an ethanol–water solvent. The as‐prepared catalysts were characterised by techniques of X‐ray diffraction, Raman spectroscopy, transmission electron microscopy and N 2 ‐sorption. The catalytic activity test results show that this SnO 2 –Zn 2 SnO 4 –graphene composite possesses higher photocatalytic degradation of rhodamine B (RhB) activity than that of pure SnO 2 –Zn 2 SnO 4 under UV‐light irradiation in an aqueous solution. The improved photocatalytic activity may be due to the increased adsorbability for the RhB molecule, more active sites, more photocatalytic reaction centres and the prevention of the photogenerated electron–hole pair recombination.