Open AccessSonochemical synthesis of SrTiO3/TiO2 heterojunction material
Author(s) -
Viurul Istighfarini,
Sri Aprilia,
Anton Prasetyo
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/456/1/012004
Subject(s) - heterojunction , materials science , anatase , band gap , photocatalysis , impurity , chemical engineering , sonication , nanotechnology , optoelectronics , chemistry , catalysis , organic chemistry , engineering
A composite SrTiO 3 /TiO 2 heterojunction photocatalyst was prepared by sonication methods. The heterojunction material SrTiO 3 /TiO 2 was synthesized using an ultrasonic cleaning bath for 4 hours, by mixing SrTiO 3 and TiO 2 with variations in the comparison of mol 1:1, 1:2, 1:4 and 1:6. Characterization using XRD shows heterojunction material consisting of SrTiO 3 and TiO 2 anatase without any impurities, with the morphological surface observed using SEM indicating the agglomerated small particles. The bandgap of heterojunction material with a variation in mol SrTiO 3 : TiO 2 of 1:1, 1:2, 1:4 and 1:6 are 3.11; 3.09; 3.07; and 3.07 eV respectively. The all of bandgap is lower than the SrTiO 3 and TiO 2 bandgap, i.e. 3.2 eV.