TY - GEN
T1 - Synthesis of ZnO-SiO2 nanocomposite particles and their characterization by sonochemical method
AU - Widiyastuti, W.
AU - Machmudah, Siti
AU - Nurtono, Tantular
AU - Winardi, Sugeng
AU - Okuyama, Kikuo
N1 - Publisher Copyright:
© 2017 Author(s).
PY - 2017/5/24
Y1 - 2017/5/24
N2 - ZnO-SiO2 nanocomposite particles were prepared by sonochemical method under continuous ultrasound irradiation for an hour. Zinc nitrate and sodium silicate were used as zinc oxide and silica sources, respectively. Silica concentration was varied to investigate the effect of silica on the characteristics of the generated composite particles and they were also compared to ZnO particles. Morphology, crystallinity, chemical bonding analysis, photoluminescence spectra, and photocatalytic activity were characterized by scanning electron microscopy (SEM), X-Ray diffraction, Fourier Transform Infrared (FTIR), luminescence spectrophotometer, and UV-Vis spectrophotometer, respectively. Nanorod structures were observed for pure ZnO, ZnO-SiO2 particles with 250 ppm and 750 ppm silica addition during synthesis. Spherical agglomerated particles were found for particle with 0.1 M silica addition. The crystalline size and photocalytic activity decreased with the silica addition. A strongest chemical bonding for ZnO and SiO2 was also observed for particle with 0.1 M silica addition based on FTIR spectra. However, the highest photoluminescence emission by excitation wavelength at 250 nm, was observed for ZnO-SiO2 particles with 750 ppm silica addition with emission peak at 515 nm wavelength.
AB - ZnO-SiO2 nanocomposite particles were prepared by sonochemical method under continuous ultrasound irradiation for an hour. Zinc nitrate and sodium silicate were used as zinc oxide and silica sources, respectively. Silica concentration was varied to investigate the effect of silica on the characteristics of the generated composite particles and they were also compared to ZnO particles. Morphology, crystallinity, chemical bonding analysis, photoluminescence spectra, and photocatalytic activity were characterized by scanning electron microscopy (SEM), X-Ray diffraction, Fourier Transform Infrared (FTIR), luminescence spectrophotometer, and UV-Vis spectrophotometer, respectively. Nanorod structures were observed for pure ZnO, ZnO-SiO2 particles with 250 ppm and 750 ppm silica addition during synthesis. Spherical agglomerated particles were found for particle with 0.1 M silica addition. The crystalline size and photocalytic activity decreased with the silica addition. A strongest chemical bonding for ZnO and SiO2 was also observed for particle with 0.1 M silica addition based on FTIR spectra. However, the highest photoluminescence emission by excitation wavelength at 250 nm, was observed for ZnO-SiO2 particles with 750 ppm silica addition with emission peak at 515 nm wavelength.
UR - http://www.scopus.com/inward/record.url?scp=85020431799&partnerID=8YFLogxK
U2 - 10.1063/1.4982306
DO - 10.1063/1.4982306
M3 - Conference contribution
AN - SCOPUS:85020431799
T3 - AIP Conference Proceedings
BT - International Seminar on Fundamental and Application of Chemical Engineering 2016, ISFAChE 2016
A2 - Widiyastuti, null
A2 - Taufany, Fadlilatul
A2 - Nurkhamidah, Siti
PB - American Institute of Physics Inc.
T2 - 3rd International Seminar on Fundamental and Application of Chemical Engineering 2016, ISFAChE 2016
Y2 - 1 November 2016 through 2 November 2016
ER -