CaTiO3 Perovskite in the Photocatalysis of Textile Wastewater

Abstract

Perovskite-type CaTiO3 material was synthesized by the polymeric precursor method and characterized. The powder was applied as a promising alternative to TiO2 photocatalyst. Photocatalytic reaction parameters were optimized by surface analysis methodology on the degradation of methylene blue under UV radiation. After optimization, complex textile- and tannery wastewaters were treated and the COD reduction was evaluated. At optimized conditions (pH=11.2 and 1 g L-1 of catalyst concentration), the results obtained for the photodegradation of the real wastewater after 240 min of irradiation were 45% COD reduction for both effluents. The reactions were adjusted to the pseudo first order kinetic and the rate constants were 2.07 x 10-3 (min-1) and 2.23 x 10- 3 (min-1) for COD reduction for textile- and tannery wastewaters, respectively.

Photocatalysis and perovskite oxide-based materials: a remedy for a clean and sustainable future

“…Fe-doped CaTiO 3 efficiently degraded the methyl blue using the visible light source. 166 The doping of the Fe in the CaTiO 3 increased the absorption ability of CaTiO 3 . The photocatalytic activity also depends upon the calcination temperature and the irradiation time of the light.…”

“…The wide bandgap of CaTiO 3 (3.0–3.5 eV) responds only to the UV light and efficiently degrade the brilliant green (BG), methyl blue (MG), and rhodamine B (RHb). 88,166 The synthesis route and the morphology of the CaTiO 3 structure change the bandgap and thus affect the photocatalytic performance for pollutant degradation. CaTiO 3 nanocuboid showed the excellent photodegradation of the RhB dye upon visible light irradiation.…”

Oxysulfide perovskites: reduction of the electronic band gap of RbTaO3 by sulfur substitution

“…Several oxide Perovskites, including NaTaO 3 [7], KTaO 3 [8], BaZrO 3 [9], SrTiO 3 [10], BaTiO 3 [11], CaTiO 3 [12], and LaFeO 3 [13], EuAlO 3 [14] and YMnO 3 [15] have demonstrated favorable optical, electrical, structural, and thermal properties. These Perovskite materials offer diverse properties that make them valuable in various fields, including energy harvesting, electronics, catalysis, sensing, and information storage.…”

A Review on Synthesis, Properties, and Environmental Application of Fe-Based Perovskite

“…e development of nanomaterials and their novel properties enforced the scientists to downsize the perovskite structures to nanoregime to foster its performance and applications [8]. Nanoperovskites have better catalytic efciency [9] and more enhanced conductivity than bulk due to their large amount of grain boundaries [10], dielectrics [11], and so forth.…”