1. MWCNT supported V 2 O 5 quantum dot nanoparticles decorated Bi 2 O 3 nanosheets hybrid system: Efficient visible light driven photocatalyst for degradation of ciprofloxacin.
- Author
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V V, Alsawalha M, Alomayri T, Allehyani S, Hu YB, Fu ML, and Yuan B
- Subjects
- Bismuth chemistry, Ciprofloxacin, Light, Nanotubes, Carbon, Quantum Dots
- Abstract
A novel composite of multiwall carbon nanotube (MWCNT) supported V
2 O5 quantum dots decorated Bi2 O3 hybrid was prepared by the simple wet-impregnation method, and the photocatalytic performance of the prepared samples was investigated against the photodegradation of ciprofloxacin (CIP). Herein, different samples of pristine, V2 O5 /Bi2 O3 and MWCNT@V2 O5 /Bi2 O3 hybrid photocatalyst were prepared and systematically characterized by various physicochemical techniques. The characterization results demonstrated that the introduction of MWCNT can change the energy band gap of V2 O5 /Bi2 O3 , and the band energies vary with a constituent of MWCNT@V2 O5 /Bi2 O3 catalyst, in which MWCNT@V2 O5 /Bi2 O3 -5 (0.05 g@0.50 g:0.50 g) has the optimal band gap energy of 2.46 eV. The photocatalytic test demonstrates that the MWCNT@V2 O5 /Bi2 O3 -5 hybrid composites exhibited enhanced photocatalytic activity in CIP degradation compared to that pure and other photocatalyst and its degradation efficiency did not decrease significantly even after five cyclic experiments. The enhanced photocatalytic activity was due to the formation of heterojunction among MWCNT, V2 O5 and Bi2 O3 , which distinctly improved the separation efficiency of the photogenerated charge carrier, thus increasing the degradation performance. This work gives a new approach to designing an efficient photocatalyst for contaminants degradation., (Copyright © 2022 Elsevier Ltd. All rights reserved.)- Published
- 2022
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