Substitution of V5+ in BiVO4 with Ni2+ and the Improved Photocatalytic Degradation of Crystal Violet Under White LED Light Irradiation

The effects of the substitution of V 5+ with Ni 2+ at the corresponding sites in BiVO 4 on the crystal structures, optical properties, and photocatalytic efficiency of BiVO 4 was investigated. Ni 2+ cations doped at the V 5+ sites in BiVO 4 was confirmed by X-ray diffraction, Raman, X-ray photoelect...

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Bibliographic Details
Published in:Topics in catalysis 2023, Vol.66 (1-4), p.2-11
Main Authors: Pham, Van Thinh, Dao, Bach-Tuyet T., Nguyen, Hong-Tham T., Tran, Ngoc Quyen, Hang, Dang Thi Le, Trung, Nguyen Dinh, Lee, Taeyoon, Bach, Long Giang, Nguyen, Trinh Duy
Format: Article
Language:English
Subjects:
Bismuth oxides
Catalysis
Catalytic activity
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Crystal defects
Crystal structure
Current carriers
Doping
Industrial Chemistry/Chemical Engineering
Light emitting diodes
Light irradiation
Optical properties
Original Paper
Pharmacy
Photocatalysis
Photodegradation
Photoelectrons
Photoluminescence
Physical Chemistry
Spectra
Substitutes
Ultraviolet reflection
Vanadates
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Summary:The effects of the substitution of V 5+ with Ni 2+ at the corresponding sites in BiVO 4 on the crystal structures, optical properties, and photocatalytic efficiency of BiVO 4 was investigated. Ni 2+ cations doped at the V 5+ sites in BiVO 4 was confirmed by X-ray diffraction, Raman, X-ray photoelectron spectroscopy, ultraviolet–visible diffuse reflectance spectra, and photoluminescence spectra. Ni-doped BiVO 4 exhibited excellent degradation of crystal violet (CV) compared with the bare BiVO 4 . For optimal Ni 2+ doping of 5%, the degradation rate of CV, which reached about 95% within 180 min of LED light irradiation, was obtained. Ni doping can introduce advantageous defect states that significantly increase the separation and diffusion efficiency of the photo-induced charge carriers, thereby boosting the photocatalytic activity of crystal structures.
ISSN:1022-5528
1572-9028
DOI:10.1007/s11244-022-01615-4