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

63 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.

KW - Dye degradation

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KW - Mesoporous silica (KIT-6)

KW - Monoclinic phase

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