Open AccessA preliminary study of phases, elemental mapping, and electrical properties on Na2FeSiO4 derived from rice husk silica
Author(s) -
Agus Riyanto,
Simon Sembiring,
Ayu Rizka Amalia,
Ayu Astika,
Roniyus Marjunus
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1572/1/012003
Subject(s) - husk , analytical chemistry (journal) , electrical resistivity and conductivity , impurity , phase (matter) , materials science , mineralogy , chemistry , physics , chromatography , botany , organic chemistry , quantum mechanics , biology
This work reports a preliminary investigation about the phase, element mapping, and electrical properties of Na 2 FeSiO 4 prepared from rice husk silica, (FeNO 3 ) 3 .9H 2 O, NaOH, and C 6 H 8 O 7 .H 2 O using the sol-gel method. A sample sintered at 800 °C with a holding time of 10 hours at peak temperature. The phases identification shows that the main phase of Na 2 FeSiO 4 had been formed in the sample accompanied by two impurity phases, i.e., Na 2 SiO 3 and SiO 2 . Elemental mapping shows that Na, Fe, Si, and O elements are evenly distributed over the entire surface of the sample. The band gap energy value of the sample is relatively small, around 2.58 eV - 2.87 eV. Its electrical conductivity varies depending on frequency, i.e., 6.13×10 −5 S/m at 1 Hz and decreases gradually up to 4.27×10 −5 S/m at 1000 Hz.