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One-step electrodeposition preparation of boron nitride and samarium co-modified Ti/PbO2 anode with ultra-long lifetime: highly efficient degradation of lincomycin wastewater.
- Source :
- Environmental Science & Pollution Research; Sep2023, Vol. 30 Issue 43, p97195-97208, 14p
- Publication Year :
- 2023
-
Abstract
- Lincomycin (LC) is an extensively applied broad-spectrum antibiotic, and its considerable residues in wastewater have caused a series of environmental problems, which makes degradation of LC wastewater extremely urgent. In this work, we have constructed a novel boron nitride (BN) and samarium (Sm) co-modified Ti/PbO<subscript>2</subscript> as anode for high-performance degradation of LC wastewater. Compared with Ti/PbO<subscript>2</subscript>, Ti/PbO<subscript>2</subscript>-Sm, and Ti/PbO<subscript>2</subscript>-BN electrodes, Ti/PbO<subscript>2</subscript>-BN-Sm electrode with smaller pyramidal particles possesses higher oxygen evolution potential (2.32 V), excellent accelerated service life (103 h), and outstanding electrocatalytic activity. The single-factor experiments demonstrate that under optimized conditions (current density of 20 mA.cm<superscript>-2</superscript>, 6.0 g L<superscript>-1</superscript> Na<subscript>2</subscript>SO<subscript>4</subscript>, pH 9, and temperature of 30°C), removal rate and COD degradation rate of LC at 3 h have reached 92.85% and 89.11%, respectively. At the same time, degradation of LC is in accordance with the primary kinetic model. Based on the analysis of high-performance liquid chromatography-mass spectrometry (HPLC-MS), four possible degradation pathways are hypothesized. Therefore, efficient electrochemical degradation of LC by using an extremely long-life Ti/PbO<subscript>2</subscript> electrode with high catalytic activity may be a promising method. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09441344
- Volume :
- 30
- Issue :
- 43
- Database :
- Complementary Index
- Journal :
- Environmental Science & Pollution Research
- Publication Type :
- Academic Journal
- Accession number :
- 171883104
- Full Text :
- https://doi.org/10.1007/s11356-023-28819-9