Abdulloh Fuad, Nandang Mufti, Markus Diantoro, Subakti, S. Septa Kurniawati
A simple method based on alkaline extraction followed by acid precipitation and acid dissolution has been developed to produce highly purified nanosilica from pyrophyllite materials. The reaction parameters such as molar ratio NaOH/SiO2, reaction time and reaction temperature are varied for obtaining maximum nanosilica convertion. About 99,45% highly purified precipitated nanosilica measure with ICP, 259m2/gr measure with BET surface area, 97% whiteness and 3ml/gr oil absorbtion from pyrophyllite materials has been achieved in closed system at 150°C within 180min. The physicals and chemical properties (such as X-Ray Diffraction from PANalytical, X-Ray Fluorescence Minipal4 from PANanalytical, BET surface area, Forier Transform Infra Red Spectroscopy from Hitachi, and SEM-EDS Inspect-S50 from FEI Company) of the highly purity nanosilica were studied. © 2016 AIP Publishing LLC.
Jurusan Fisika FMIPA Universitas Negeri Malang, Jl. Semarang No. 5, Malang, east Java, Indonesia
