Open AccessPENGARUH PENAMBAHAN CO-DOPING Mg/La TERHADAP KARAKTERISASI TiO2 SEBAGAI FOTOELEKTRODA
Author(s) -
Nurul Azmi,
Ismail Ismail,
Mursal Mursal
Publication year - 2021
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.v9i1.2633
Subject(s) - doping , materials science , dopant , fourier transform infrared spectroscopy , analytical chemistry (journal) , nuclear chemistry , substrate (aquarium) , chemistry , chemical engineering , chromatography , oceanography , optoelectronics , engineering , geology
The effect of Mg/La co-doping addition on the caracteristics of TiO2 as photoelectrode have been studied. This study aims to investigate the effect of Mg/La co-doping concentration on the characteristics of TiO2. This study aims investigate the effect of Mg/La co-doping concentration on the characteristics of TiO2. Mg/La was varied from 0% mol, 0.4 / 0.6% mol, and 0.6 / 0.4% mol. Synthesis of TiO2 co-doping Mg/La was done by sol gel method. The resulting of powder pure TiO2 and co-doping Mg/La was made to paste, and was deposited on a glass substrate with a size of 2.5 x 2.5 cm and sintered at 600°C for 1 hour. Mg / La co-doped TiO2 layers were characterized using XRD, UV-Vis, and FTIR spectrometers. The results showed that TiO2 was the mos dominan phase appeared in pure TiO2 sample. The phase of MgO, MgTiO3, Mg2TiO4, and La2O3 were found in Mg/La co-doped TiO2 samples. The crystal size of Mg/La co-doped TiO2 was varied from 8.85 to 7.70 nm. In this research, we obtained that the energy gap was varied from 3.52 to 3.5 eV depent on co-dopant concentration. FTIR measurement showed groups of Ti-O, Ti-O-Ti, Ti-O-O, and H-O.