@article{scholars16040,
           pages = {530--538},
          volume = {208},
           title = {Crystal violet degradation over BiVO4 photocatalyst under visible light irradiation},
          number = {4},
             doi = {10.1080/00986445.2019.1674823},
       publisher = {Taylor and Francis Ltd.},
            year = {2021},
         journal = {Chemical Engineering Communications},
            note = {cited By 5},
            issn = {00986445},
          author = {Nong, L. X. and Nguyen, V. H. and Bach, L. G. and Tran, T. V. and Hong, S. S. and Abdullah, B. and Hien, N. K. and Nguyen, T. D.},
        keywords = {Chromium compounds; Crystals; Equilibrium constants; Image enhancement; Irradiation; Light; Nanocrystalline materials; Photocatalysts; Photocatalytic activity; Photodegradation; Rate constants; Scanning electron microscopy; Tungstate minerals, Adsorption equilibrium constants; BiVO4; Crystal violet; Hydrothermal methods; Langmuir-Hinshelwood models; UV-vis diffuse reflectance spectra; Visible light; Visible-light irradiation, Bismuth compounds},
        abstract = {Sigle phase scheelite-monoclinic BiVO4 materials with different morphologies were successfully fabricated via a facile hydrothermal process by controlling pH of the precursor. The photocatalytic properties of the as-prepared materials were assessed via the photodecomposition of crystal violet (CV) solution under a 60 W LED (Cree-L6) visible light irradiation. The Langmuir-Hinshelwood model was utilized to present kinetic behavior. The obtained BiVO4 exhibited a monoclinic crystalline structure and narrow bandgap energy (Eg = 2.3{\^a}??2.6 eV), which were confirmed by the X-ray diffraction (XRD), Raman and UV-vis diffuse reflectance spectra (UV-vis DRS) results. From the scanning electron microscopy (SEM) results, BiVO4 morphologies could be facilely controlled by turning the pH value of the precursor. When pH = 0.3, the BiVO4 products showed spherical morphologies with particle sizes in the range of 1{\^a}??5 {\^A}um. Rod- and spherical like-BiVO4 products were obtained when the pH of the precursor was adjusted to 3. Moreover, BiVO4 with nanoparticles could be prepared under the pH of 5{\^a}??7, whereas leaf-like morphologies could be achieved when pH = 9. The photocatalytic test showed that the adsorption equilibrium constant depended on the morphologies of the BiVO4 products and the reaction rate constant was reached the highest level at pH = 3. This outcome indicated that the enhanced performance of BiVO4 significantly depended on the morphologies of the BiVO4 products and the effective suppression of photo-excited electrons and holes. {\^A}{\copyright} 2019 Taylor \& Francis Group, LLC.},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85076457821&doi=10.1080\%2f00986445.2019.1674823&partnerID=40&md5=44e13b1ada55e052dca3e136318155d0}
}