Open AccessSynthesis of silica nanoparticles from rice husk ash
Author(s) -
Nhung Dang,
Trinh Thi Ai Nguyen,
Truong Khoa Phan,
Hoa Nhu Thi Tran,
Phu Van Dang,
Hien Q. Nguyen
Publication year - 2018
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v20ik7.1211
Subject(s) - calcination , husk , fourier transform infrared spectroscopy , materials science , nanoparticle , dynamic light scattering , amorphous solid , transmission electron microscopy , particle size distribution , chemical engineering , particle size , nuclear chemistry , nanotechnology , chemistry , organic chemistry , catalysis , botany , engineering , biology
Silica nanoparticles (SiO2 NPs) were synthesized from rice husk ash (RHA) by chemical treatment and calcination. The size of SiO2 NPs evaluated by transmission electron microscope (TEM) was of 20 - 50 nm and the size distribution of SiO2 NPs measured by dynamic laser scattering (DLS) was of Gaussian mode. The X-ray diffraction (XRD) pattern with only one peak at 2θ ~ 220 confirmed the amorphous phase of SiO2 NPs. The Fourier transform infrared (FTIR) and energydispersive X-ray (EDX) spectra were also used to evaluate the functional groups and the purity of SiO2 NPs. The SiO2 NPs powder with high purity could be suitably produced by calcination of acid treated RHA at 7000C for 2h. The obtained SiO2 NPs product can be potentially used for numerous purposes of application, especially as filler in paints.