Open AccessPreparation and Characterization of Nano silica Prepared by Different Precipitation Methods
Author(s) -
Sabah M. Thahab Al-Abboodi,
Eman Jabber Abed Al-Shaibani,
Enass. A. Alrubai
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/978/1/012031
Subject(s) - silanol , calcination , husk , materials science , fourier transform infrared spectroscopy , precipitation , nano , silica gel , nuclear chemistry , chemical engineering , chemistry , composite material , catalysis , organic chemistry , botany , physics , meteorology , engineering , biology
Agricultural waste Rice husk ash (RHA) is large and massive by the output of rice milling manufacture and contains a high amount of silica. Taking into account this verdant technology is utilized to get SiO 2 Nanoparticles from rice shell ash. In this research, studies on the extraction methods of Nano-silica by combustion rice shell for 2 h at 700 °C were carried out and investigated. However, the Rice shell ash was undergoing to precipitation methods and sol gel method to manufacture Nano silica. precipitation methods involve refluxing silica from Rice shell ash in boiled (1.0,2.0 N NaOH). While the sol-gel method involves calcination of RHA was treated with HCl at 700 °C for 2 h followed by chemical treatment. Results of The Infrared spectral (IR) information display the presence of hydrogen-bonded silanol group and the siloxane groups in silica. The Optical properties through UV-visible spectroscopy of the Nano silica samples show a wide bandgap value and absorption peaks located in the UV region. As well as, the particles size analysis with values of (13.02, 16.83 and 23.96 nm) for the samples (1NSiO 2 , 2NSiO 2 , and acid leaching) were obtained respectively.