Open AccessPengaruh Variasi H2SO4 Pada Pembentukan Nanosilika Berbasis Batu Apung
Author(s) -
Riska Trisuraini,
Posman Manurung,
Suprihatin Suprihatin
Publication year - 2019
Publication title -
jurnal teori dan aplikasi fisika/jurnal teori dan aplikasi fisika
Language(s) - English
Resource type - Journals
eISSN - 2549-1156
pISSN - 2303-016X
DOI - 10.23960/jtaf.v7i2.1954
Subject(s) - pumice , calcination , diffractometer , materials science , anorthite , nuclear chemistry , mineralogy , albite , analytical chemistry (journal) , amorphous solid , particle size , scanning electron microscope , metallurgy , chemistry , crystallography , composite material , chromatography , geology , biochemistry , quartz , volcano , seismology , catalysis
Nanosilica was extracted by using NaOH, H2SO4 and HCl. The amounth of NaOH and HCl are 3,0 M and 1,0 M respectively. The titration using H2SO4 was varied of 4,0 M; 4,5 M; 5,0 M; 5,5 M; 6,0 M. The pumice powder was calcined for 4 hours at 500 ºC and the nanosilica powder was calcined for 5,5 hours at 800 ºC. The results of X-Ray Flouresence (XRF) showed nanosilica with the highest purity in variation of H2SO4 5,0 M at 95,32%. The results of the X-Ray Diffractometer (XRD) showed that pumice consistent the anorthite and albite phase. The variation of H2SO4 5,0 M produced an amorphous phase. The results of Transmission Electron Microscopy (TEM) show nanosilica particle size with variations of H2SO4 5,0 M in the range 4,8-11,3 nm with an average (7,62 ± 2,15) nm.