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Title: Substitution of V5 in BiVO4 with Ni2 and the Improved Photocatalytic Degradation of Crystal Violet Under White LED Light Irradiation.
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
Abstract: The effects of the substitution of V5+ with Ni2+ at the corresponding sites in BiVO4 on the crystal structures, optical properties, and photocatalytic efficiency of BiVO4 was investigated. Ni2+ cations doped at the V5+ sites in BiVO4 was confirmed by X-ray diffraction, Raman, X-ray photoelectron spectroscopy, ultraviolet–visible diffuse reflectance spectra, and photoluminescence spectra. Ni-doped BiVO4 exhibited excellent degradation of crystal violet (CV) compared with the bare BiVO4. For optimal Ni2+ 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.
Subjects: GENTIAN violet; PHOTODEGRADATION; IRRADIATION; X-ray photoelectron spectroscopy; PHOTOCATALYSTS; OPTICAL properties; CHARGE carriers
Publication: Topics in Catalysis, 2023, Vol 66, Issue 1-4, p2
ISSN: 1022-5528
Publication type: Academic Journal
DOI: 10.1007/s11244-022-01615-4

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Substitution of V<sup>5 </sup> in BiVO<sub>4</sub> with Ni<sup>2 </sup> and the Improved Photocatalytic Degradation of Crystal Violet Under White LED Light Irradiation.