The effect of crystal facets and induced porosity on the performance of monoclinic BiVO4 for the enhanced visible-light driven photocatalytic abatement of methylene blue

Iqrash Shafiq; Murid Hussain; Nasir Shehzad; Ibrahim M. Maafa; Parveen Akhter; Um E.Salma Amjad; Sumeer Shafique; Abdul Razzaq; Wenshu Yang; Muhammad Tahir; Nunzio Russo

doi:10.1016/j.jece.2019.103265

The effect of crystal facets and induced porosity on the performance of monoclinic BiVO₄ for the enhanced visible-light driven photocatalytic abatement of methylene blue

Iqrash Shafiq, Murid Hussain, Nasir Shehzad, Ibrahim M. Maafa, Parveen Akhter, Um E.Salma Amjad, Sumeer Shafique, Abdul Razzaq, Wenshu Yang, Muhammad Tahir, Nunzio Russo

Research output: Contribution to journal › Article › peer-review

56 Citations (Scopus)

Abstract

In this study, a unique two-step approach has been developed to synthesize mesoporous BiVO₄ (m-BiVO₄) photocatalysts. The synthesized photocatalysts were characterized by means of XRD, SEM, EDS, UV-vis, Raman, PL, DRS, and N₂-physiosorption analysis techniques. The hybrid BiVO₄/KIT-6 composite and m-BiVO₄ particles exhibited selective growth of the (040) crystal facet, a smaller size, high surface areas, a large pore volume as a result of the porosity induced by KIT-6 and, a greater number of active sites. The charge recombination rate of m-BiVO₄ was remarkably lower than that of conventional BiVO₄. In addition, the bandgap energy of m-BiVO₄ was 2.2eV, which is suitable for visible light irradiation. It was observed that the photocatalytic activity of m-BiVO₄ was superior to that of conventional BiVO₄ under visible-light illumination, due to the synergistic effect of the highly active monoclinic phase and large surface area of m-BiVO₄. Furthermore, the monoclinic m-BiVO₄ was also tested for photocatalytic degradation ability by using an anonymous industrial effluent for 3 h under visible light irradiation.

Original language	English
Article number	103265
Journal	Journal of Environmental Chemical Engineering
Volume	7
Issue number	4
DOIs	https://doi.org/10.1016/j.jece.2019.103265
Publication status	Published - Aug 2019
Externally published	Yes

Keywords

Dye degradation
Mesoporous BiVO
Mesoporous silica (KIT-6)
Monoclinic phase

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)
Waste Management and Disposal
Pollution
Process Chemistry and Technology

Access to Document

10.1016/j.jece.2019.103265

Cite this

Shafiq, I., Hussain, M., Shehzad, N., Maafa, I. M., Akhter, P., Amjad, U. E. S., Shafique, S., Razzaq, A., Yang, W., Tahir, M., & Russo, N. (2019). The effect of crystal facets and induced porosity on the performance of monoclinic BiVO₄ for the enhanced visible-light driven photocatalytic abatement of methylene blue. Journal of Environmental Chemical Engineering, 7(4), Article 103265. https://doi.org/10.1016/j.jece.2019.103265

The effect of crystal facets and induced porosity on the performance of monoclinic BiVO₄ for the enhanced visible-light driven photocatalytic abatement of methylene blue. / Shafiq, Iqrash; Hussain, Murid; Shehzad, Nasir et al.
In: Journal of Environmental Chemical Engineering, Vol. 7, No. 4, 103265, 08.2019.

Research output: Contribution to journal › Article › peer-review

Shafiq, I, Hussain, M, Shehzad, N, Maafa, IM, Akhter, P, Amjad, UES, Shafique, S, Razzaq, A, Yang, W, Tahir, M & Russo, N 2019, 'The effect of crystal facets and induced porosity on the performance of monoclinic BiVO₄ for the enhanced visible-light driven photocatalytic abatement of methylene blue', Journal of Environmental Chemical Engineering, vol. 7, no. 4, 103265. https://doi.org/10.1016/j.jece.2019.103265

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abstract = "In this study, a unique two-step approach has been developed to synthesize mesoporous BiVO4 (m-BiVO4) photocatalysts. The synthesized photocatalysts were characterized by means of XRD, SEM, EDS, UV-vis, Raman, PL, DRS, and N2-physiosorption analysis techniques. The hybrid BiVO4/KIT-6 composite and m-BiVO4 particles exhibited selective growth of the (040) crystal facet, a smaller size, high surface areas, a large pore volume as a result of the porosity induced by KIT-6 and, a greater number of active sites. The charge recombination rate of m-BiVO4 was remarkably lower than that of conventional BiVO4. In addition, the bandgap energy of m-BiVO4 was 2.2eV, which is suitable for visible light irradiation. It was observed that the photocatalytic activity of m-BiVO4 was superior to that of conventional BiVO4 under visible-light illumination, due to the synergistic effect of the highly active monoclinic phase and large surface area of m-BiVO4. Furthermore, the monoclinic m-BiVO4 was also tested for photocatalytic degradation ability by using an anonymous industrial effluent for 3 h under visible light irradiation.",

keywords = "Dye degradation, Mesoporous BiVO, Mesoporous silica (KIT-6), Monoclinic phase",

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AU - Hussain, Murid

AU - Shehzad, Nasir

AU - Maafa, Ibrahim M.

AU - Akhter, Parveen

AU - Amjad, Um E.Salma

AU - Shafique, Sumeer

AU - Razzaq, Abdul

AU - Yang, Wenshu

AU - Tahir, Muhammad

AU - Russo, Nunzio

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AB - In this study, a unique two-step approach has been developed to synthesize mesoporous BiVO4 (m-BiVO4) photocatalysts. The synthesized photocatalysts were characterized by means of XRD, SEM, EDS, UV-vis, Raman, PL, DRS, and N2-physiosorption analysis techniques. The hybrid BiVO4/KIT-6 composite and m-BiVO4 particles exhibited selective growth of the (040) crystal facet, a smaller size, high surface areas, a large pore volume as a result of the porosity induced by KIT-6 and, a greater number of active sites. The charge recombination rate of m-BiVO4 was remarkably lower than that of conventional BiVO4. In addition, the bandgap energy of m-BiVO4 was 2.2eV, which is suitable for visible light irradiation. It was observed that the photocatalytic activity of m-BiVO4 was superior to that of conventional BiVO4 under visible-light illumination, due to the synergistic effect of the highly active monoclinic phase and large surface area of m-BiVO4. Furthermore, the monoclinic m-BiVO4 was also tested for photocatalytic degradation ability by using an anonymous industrial effluent for 3 h under visible light irradiation.

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