Open AccessSynthesis of mono‐dispersed ceria hollow nanospheres by a hydrothermal method
Author(s) -
Jiang Xueliang,
Zhang Jiao,
Yu Lu,
Chen Ruiqi,
Xu Xiong
Publication year - 2016
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.2015.0455
Subject(s) - polyvinylpyrrolidone , materials science , cerium , cerium nitrate , methyl orange , hydrothermal circulation , ethylene glycol , scanning electron microscope , chemical engineering , adsorption , aqueous solution , transmission electron microscopy , fourier transform infrared spectroscopy , x ray photoelectron spectroscopy , calcination , nuclear chemistry , inorganic chemistry , nanotechnology , photocatalysis , chemistry , polymer chemistry , organic chemistry , catalysis , composite material , engineering , metallurgy
Mono‐dispersed ceria (CeO 2 ) hollow nanospheres about 400 nm have been prepared via a facile one‐step hydrothermal method, wherein cerium nitrate hexahydrate (Ce(NO 3 ) 3 ·6H 2 O) was used as cerium sources with the assistance of polyvinylpyrrolidone (PVP) in the ethylene glycol aqueous solution. X‐ray diffraction, X‐ray photoelectron spectra, scanning electron microscope, transmission electron microscope, nitrogen adsorption–desorption and Fourier transform infrared results indicate that PVP can improve the dispersion and control the morphology and sizes of CeO 2 hollow nanospheres as a surfactant, and the internal diameter of CeO 2 hollow nanosphere gradually increases with reaction time. Based on the time‐dependent experiment, the formation mechanism was proposed and discussed. These CeO 2 hollow nanospheres show an excellent adsorption rate of heavy metal ions for Cr(VI) and the adsorption rate is about 70%. The CeO 2 hollow nanospheres also had exhibited superior performance in the degradation of methyl orange dye.