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Optical and Photocatalytic Properties of Spinel ZnCr 2 O 4 Nanoparticles Synthesized by a Hydrothermal Route
Author(s) -
Peng Cheng,
Gao Lian
Publication year - 2008
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2008.02417.x
Subject(s) - hydrothermal circulation , nanoparticle , photocatalysis , methylene blue , materials science , spinel , band gap , excited state , chemical engineering , irradiation , hydrothermal synthesis , degradation (telecommunications) , mineralogy , nuclear chemistry , nanotechnology , catalysis , chemistry , optoelectronics , metallurgy , physics , organic chemistry , electronic engineering , nuclear physics , engineering
In this paper, a simple hydrothermal route has been developed to synthesize ZnCr 2 O 4 nanoparticles. Experimental results show that the as‐prepared ZnCr 2 O 4 nanoparticles have an average particle size of <5 nm. The ZnCr 2 O 4 nanoparticles have a direct band gap about 3.46 eV and exhibit blue emission in the range of 300–430 nm, centered at 358 nm when excited at 220 nm. Furthermore, the nanoparticles show apparent photocatalytic activities for the degradation of methylene blue under UV light irradiation.