TY - JOUR
T1 - Biogenerated silica nanoparticles synthesized from sticky, red, and brown rice husk ashes by a chemical method
AU - Sankar, S.
AU - Sharma, Sanjeev K.
AU - Kaur, Narinder
AU - Lee, Byoungho
AU - Kim, Deuk Young
AU - Lee, Sejoon
AU - Jung, Hyun
N1 - Publisher Copyright:
© 2015 Elsevier Ltd and Techna Group S.r.l.
PY - 2016/3/1
Y1 - 2016/3/1
N2 - An inexpensive chemical method was used to synthesize biogenic mesoporous silica (m-SiO2) from rice husk ash (RHA). A comparative study was carried out to produce silica nanoparticles (S-SiO2, R-SiO2, and B-SiO2) from three type of rice husk ashes (sticky, red, and brown). The microstructure of m-SiO2 was dependent on the geographical provenance and the types of RHA. An analysis of the SEM and TEM micrographs reveals that the S-SiO2 nanoparticles had a clustered spherical shape, while R-SiO2 and B-SiO2 nanoparticles were found to be purely spherical. The average crystallite size of S-SiO2, R-SiO2 and B-SiO2 nanoparticles evaluated from the TEM measurements were observed to be 50, 20 and 10 nm, respectively. The XRD pattern of silica nanopowders had an absence of sharp peaks that confirmed the amorphous nature of the material. The Fourier transform infrared (FTIR) spectra of silica nanoparticles showed the symmetric Si-O and O-Si-O stretching bond vibrations at 462, 1088, and 1098 cm-1. The surface area of S-SiO2, R-SiO2 and B-SiO2 nanopowders was measured to be 7.5513, 201.45, and 247.18 m2 g-1, respectively. The surface area of uniformly-distributed spherical nanoparticles of B-SiO2 was observed the highest, which can be applied for the application of energy storage and drug delivery systems.
AB - An inexpensive chemical method was used to synthesize biogenic mesoporous silica (m-SiO2) from rice husk ash (RHA). A comparative study was carried out to produce silica nanoparticles (S-SiO2, R-SiO2, and B-SiO2) from three type of rice husk ashes (sticky, red, and brown). The microstructure of m-SiO2 was dependent on the geographical provenance and the types of RHA. An analysis of the SEM and TEM micrographs reveals that the S-SiO2 nanoparticles had a clustered spherical shape, while R-SiO2 and B-SiO2 nanoparticles were found to be purely spherical. The average crystallite size of S-SiO2, R-SiO2 and B-SiO2 nanoparticles evaluated from the TEM measurements were observed to be 50, 20 and 10 nm, respectively. The XRD pattern of silica nanopowders had an absence of sharp peaks that confirmed the amorphous nature of the material. The Fourier transform infrared (FTIR) spectra of silica nanoparticles showed the symmetric Si-O and O-Si-O stretching bond vibrations at 462, 1088, and 1098 cm-1. The surface area of S-SiO2, R-SiO2 and B-SiO2 nanopowders was measured to be 7.5513, 201.45, and 247.18 m2 g-1, respectively. The surface area of uniformly-distributed spherical nanoparticles of B-SiO2 was observed the highest, which can be applied for the application of energy storage and drug delivery systems.
KW - Microstructural analysis
KW - Rice husk ash
KW - Silica nanoparticles
KW - Surface and pore area measurements
KW - Thermo gravimetric analysis
UR - http://www.scopus.com/inward/record.url?scp=84955565916&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2015.11.172
DO - 10.1016/j.ceramint.2015.11.172
M3 - Article
AN - SCOPUS:84955565916
SN - 0272-8842
VL - 42
SP - 4875
EP - 4885
JO - Ceramics International
JF - Ceramics International
IS - 4
ER -