Open AccessCobalt Doping on Zirconium Titanate as a Potential Photocatalyst with Visible-Light-Response
Author(s) -
Emilya Faridatul Sulaikhah,
Rian Kurniawan,
Mokhammad Fajar Pradipta,
Wega Trisunaryanti,
Akhmad Syoufian
Publication year - 2020
Publication title -
indonesian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.273
H-Index - 14
eISSN - 2460-1578
pISSN - 1411-9420
DOI - 10.22146/ijc.49459
Subject(s) - calcination , dopant , cobalt , fourier transform infrared spectroscopy , zirconium , photocatalysis , chemistry , scanning electron microscope , doping , nuclear chemistry , materials science , analytical chemistry (journal) , chemical engineering , inorganic chemistry , composite material , catalysis , organic chemistry , optoelectronics , engineering
Synthesis of cobalt-doped zirconium titanate (Co-doped ZrTiO4) as a potential photocatalyst with visible-light-response had been conducted. Materials used in this research were titanium tetraisopropoxide (TTIP) as a precursor of TiO2, ZrO2 as another semiconductor for coupling, and CoSO4·7H2O as the source of cobalt dopant. The composite was prepared by the sol-gel method with various cobalt contents and calcination temperatures. Composites with various Co dopant contents (0, 1, 3, 5, 7, and 9% (Co wt./Ti wt.)) were calcined at 500 °C for 4 h. In addition, the composite with 5% of dopant content was calcined at 700 and 900 °C to observe the influence of calcination temperature. All samples were characterized by using X-ray powder diffraction method (XRD), Fourier-transform infrared spectroscopy (FTIR), specular reflectance UV-Vis spectroscopy (SRUV), and scanning electron microscopy equipped with X-ray energy dispersive spectroscopy (SEM-EDS). Co-doped ZrTiO4 with the lowest bandgap (2.94 eV) was achieved in a sample containing 3% of cobalt content calcined at 500 °C.