期刊
ENVIRONMENTAL RESEARCH
卷 193, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.envres.2020.110587
关键词
Nb2CTx; Rod-like Nb2O5/Nb2CTx; Hydrothermal oxidation; Photocatalytic degradation; Organic pollutants
资金
- National Natural Science Foundation of China
- Civil Aviation Administration of China [U1833118]
- Sichuan Science and Technology Program [2019YFG0244]
The Nb2O5/Nb2CTx composite, synthesized through hydrothermal oxidation, shows superior photocatalytic activity in degrading Rhodamine B and tetracycline hydrochloride under visible light irradiation. The formation of a Schottky junction between Nb2O5 nanorods and Nb2CTx effectively separates photo-generated carriers, enhancing the photocatalytic performance.
The MXene-based transition metal oxide composite is a potential candidate for photocatalysts. Rod-like pseudohexagonal phase Nb2O5/Nb2CTx composites were synthesized by a simple hydrothermal oxidation of 2D layered Nb2CTx. The Nb2O5/Nb2CTx composites show superior photocatalytic activity for 98.5% of degradation of Rhodamine B (RhB) for 120 min and 91.2% of tetracycline hydrochloride (TC-HCl) for 180 min under visible light irradiation. The Schottky junction is formed between Nb2O5 nanorods and Nb2CTx and the photo-generated carriers are effectively separated, enhancing the photocatalytic activity of the Nb2O5/Nb2CTx. High photoactivity and cycle stability of Nb2O5/Nb2CTx composites indicate that hydrothermal oxidation of 2D layered Nb2CTx is an alternative to prepare efficient photocatalyst for degradation of organic pollutants.
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