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Ultra-fast synthesis of the high performance photocatalytic Ti3+ self-doped strontium titanate by an electrochemical assist in molten salt: effect of electrochemical potential.
- Source :
- Journal of Materials Chemistry A; 3/14/2024, Vol. 12 Issue 10, p6087-6092, 6p
- Publication Year :
- 2024
-
Abstract
- A simple and fast synthesis of highly photocatalytic Ti<superscript>3+</superscript> self-doped SrTiO<subscript>3</subscript> is favorable for applications. In this paper, an electrochemically assisted ultra-fast synthesis of Ti<superscript>3+</superscript> self-doped SrTiO<subscript>3</subscript> of only 5 minutes in molten SrCl<subscript>2</subscript>–NaCl with SrO was developed, which greatly reduced the traditional synthesis time. During the process, a metallic titanium anode and an iron oxide cathode were dissolved and reduced to form Ti<superscript>n+</superscript> and O<superscript>2−</superscript> ions under a constant potential, respectively, and self-assembled with SrO dissolved in SrCl<subscript>2</subscript>–NaCl. The effect of electrochemical potential on the structure and photocatalytic performance of the Ti<superscript>3+</superscript> self-doped SrTiO<subscript>3</subscript> was investigated. The results indicated that the photocatalytic performance of STO-U was improved with increasing potential. The product prepared at a high constant potential of 1.8 V is a regular cubic particle of 30–100 nm with oxygen vacancy defects of 21.31%, specific surface area of 21.3826 m<superscript>2</superscript> g<superscript>−1</superscript>, band gap of 3.03 eV, and strong absorption in the wavelength range of 400 to 800 nm. Its degradation rate for RhB reached 96.85% within 210 minutes, and showed good performance in five-cycle stability tests. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507488
- Volume :
- 12
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry A
- Publication Type :
- Academic Journal
- Accession number :
- 175855281
- Full Text :
- https://doi.org/10.1039/d3ta07933c