Development of bifunctional SrTiO3/SrMoO4 heterojunction catalyst for efficient adsorption and photocatalytic performance evaluation
- Authors
- Basumatary, Phulmani; Saha, Sandip; Ramchiary, Anjalu; Konwar, Dimpul
- Issue Date
- May-2024
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Citation
- JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, v.188
- Journal Title
- JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
- Volume
- 188
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/91092
- DOI
- 10.1016/j.jpcs.2024.111939
- ISSN
- 0022-3697
1879-2553
- Abstract
- A new bifunctional heterojunction catalyst, SrTiO3/SrMoO4 was prepared using a hydrothermal method followed by a rigorous physical blending process. A thorough investigation of its performance in removing methylene blue and phenol contaminants was undertaken through both adsorption and photocatalytic approaches. The XRD analysis reveals the formation of a heterojunction composite material displaying exceptional crystalline properties. The investigation of the optoelectronic properties and phase composition of the synthesized catalysts was carried out employing UV-Vis-DRS, photoluminescence, and Raman spectroscopy. Furthermore, electron microscopy analysis of the catalysts unveiled a cuboid-like morphology with a uniform distribution of particle sizes. The XPS peak fitting of the constituent elements yielded valuable insights into the chemical composition and oxidation states of the atoms. The experimental results demonstrated a type II heterojunction at the SrTiO3/SrMoO4 interface, promoting substantial transfer of charge carriers across the junction while simultaneously reducing the recombination rate. The SrTiO3/SrMoO4 heterojunction catalyst exhibited excellent degradation efficiency and outstanding recyclability, with a degradation enhancement of 2-fold for MB dye and 4-fold for phenol compared to the pristine SrTiO3 counterpart. The current study presents an efficient catalytic system that offers a potential avenue for wastewater treatment.
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