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Ultrasound-assisted synthesis of a feathery-shaped BiOCl with abundant oxygen vacancies and efficient visible-light photoactivity.
- Source :
- New Journal of Chemistry; 12/21/2018, Vol. 42 Issue 24, p19571-19577, 7p
- Publication Year :
- 2018
-
Abstract
- A feathery-shaped form of BiOCl (BOC-M) with a high concentration of oxygen vacancies was successfully synthesized using the ultrasound method at room temperature with maltitol as a surfactant. BOC-M was found to exhibit excellent visible-light photocatalytic activities for the degradations of the antibiotic tetracycline hydrochloride (TC-HCl) and rhodamine B (RhB), whose reaction rate was found to be approximately 3 times higher than that using bulk BiOCl (BOC). The enhanced visible photocatalytic performance of BOC-M was ascribed to its high concentration of oxygen vacancies, large specific surface area and strong hydrophilicity. Moreover, the photocatalytic reaction mechanism was further revealed by performing radical- and hole-trapping experiments and electron spin resonance spectroscopy (ESR). The results suggested that ṖO<subscript>2</subscript><superscript>−</superscript> was the main active species during the degradation process. This work provided a facile and scalable method to synthesize maltitol-assisted Bi-based photocatalysts and shed light on the highly efficient catalysis offered by BiOCl resulting from the oxygen vacancies produced by the new synthetic route we developed. [ABSTRACT FROM AUTHOR]
- Subjects :
- OXYCHLORIDES
OXYGEN
INORGANIC synthesis
Subjects
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 42
- Issue :
- 24
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 133398901
- Full Text :
- https://doi.org/10.1039/c8nj04165b