Volume 16 Issue 1
Mar.  2023
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Article Navigation >  Water Science and Engineering  > 2023  >  16(1): 76-82
Leena V. Bora, Sonal P. Thakkar, Kevin S. Vadaliya, Nisha V. Bora. 2023: Waste fly ash—ZnO as a novel sunlight-responsive photocatalyst for dye discoloration. Water Science and Engineering, 16(1): 76-82. doi: 10.1016/j.wse.2022.11.001
Citation: Leena V. Bora, Sonal P. Thakkar, Kevin S. Vadaliya, Nisha V. Bora. 2023: Waste fly ash—ZnO as a novel sunlight-responsive photocatalyst for dye discoloration. Water Science and Engineering, 16(1): 76-82. doi: 10.1016/j.wse.2022.11.001
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Waste fly ash—ZnO as a novel sunlight-responsive photocatalyst for dye discoloration

doi: 10.1016/j.wse.2022.11.001

  • a Nirma University, Ahmedabad, Gujarat 382481, India;

  • b Government Engineering College, Modasa, Gujarat 383315, India

  • Received Date: 2022-05-20
  • Accepted Date: 2022-11-03
  • Rev Recd Date: 2022-10-24
    Abstract
  • Treating waste with a waste material using freely available solar energy is the most effective way towards sustainable future. In this study, a novel photocatalyst, partly derived from waste material from the coal industry, was developed. Fly ash hybridized with ZnO (FA—Zn) was synthesized as a potential photocatalyst for dye discoloration. The synthesized photocatalyst was characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and ultraviolet—visible/near infra-red spectroscopy. The photocatalytic activity was examined with the discoloration of methylene blue used as synthetic dye wastewater. All the experiments were performed in direct sunlight. The photocatalytic performance of FA—Zn was found to be better than that of ZnO and the conventionally popular TiO2. The Langmuire—Hinshelwood model rate constant values of ZnO, TiO2, and FA—Zn were found to be 0.016 min-1, 0.017 min-1, and 0.020 min-1, respectively. There were two reasons for this: (1) FA—Zn was able to utilize both ultraviolet and visible parts of the solar spectrum, and (2) its Brunauere—Emmette—Teller surface area and porosity were significantly enhanced. This led to increased photon absorption and dye adsorption, thus exhibiting an energy-efficient performance. Therefore, FA—Zn, partly derived from waste, can serve as a suitable material for environmental remediation and practical solar energy applications.

     

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  • An, N., Ma, Y., Ma, H., Yang, J., Zhang, Q., 2018. Enhanced visible-light photocatalytic oxidation capability of carbon-doped TiO2 via coupling with fly ash. Chin. J. Catal. 39(12), 1890-1900. https://doi.org/10.1016/S1872-2067(18)63152-3.
    Autthawong, T., Namsar, O., Yu, A., Sarakonsri, T., 2020. Cost-effective production of SiO2/C and Si/C composites derived from rice husk for advanced lithium-ion battery anodes. J. Mater. Sci. Mater. Electron. 31, 9126-9132. https://doi.org/10.1007/s10854-020-03442-3.
    Barman, S., Chakraborty, R., 2021. Sustainable HMF synthesis from waste cooked rice water using fly-ash based Al2SiO5 supported nanophotocatalyst under halogen-ultrasound synergistic-energy: LCA and DFT based simulation. J. Environ. Chem. Eng. 9(6), 106736. https://doi.org/10.1016/j.jece.2021.106736.
    Butler, M.A., 1977. Photoelectrolysis and physical properties of the semiconducting electrode WO2. J. Appl. Phys. 48, 1914-1920. https://doi.org/10.1063/1.323948.
    Chen, S., Zhao, W., Liu, W., Zhang, S., 2008. Preparation, characterization and activity evaluation of pen junction photocatalyst p-ZnO/n-TiO2. Appl. Surf.Sci. 255(5), 2478-2484. https://doi.org/10.1016/j.apsusc.2008.07.115.
    Chen, S., Zhao, W., Liu, W., Zhang, H., Yu, X., 2009. Preparation, characterization and activity evaluation of pen junction photocatalyst pCaFe2O4/n-ZnO. Chem. Eng. J. 155, 466-473. https://doi.org/10.1016/j.cej.2009.07.009.
    Chuaicham, C., Inoue, T., Balakumar, V., tian, Q., Ohtani, B., Sasaki, K., 2022.Visible light-driven ZnCr double layer oxide photocatalyst composites with fly ashes for the degradation of ciprofloxacin. J. Environ. Chem. Eng. 10(1), 106970. https://doi.org/10.1016/j.jece.2021.106970.
    Fouad, M., Alalm, M.G., El-Etriby, H.K., Boffito, D.C., Ookawara, S., Ohno, T., Fujii, M., 2021. Visible-light-driven photocatalytic disinfection of raw surface waters (300-5000 CFU/mL) using reusable coated Ru/WO3/ZrO2. J. Hazard Mater. 402, 123514. https://doi.org/10.1016/j.jhazmat.2020.123514.
    Fujishima, A., 2008. TiO2 photocatalysis and related surface phenomena. Surf.Sci. Rep. 63(12), 515-582. https://doi.org/10.1016/j.surfrep.2008.10.001.
    Herrmann, J.-M., 1995. Heterogeneous photocatalysis: An emerging discipline involving multiphase systems. Catal. Today 24(1-2), 157-164. https://doi.org/10.1016/0920-5861(95)00005-Z.
    Herrmann, J.-M., 2010a. Fundamentals and misconceptions in photocatalysis.J. Photochem. Photobiol. Chem. 216, 85-93. https://doi.org/10.1016/j.jphotochem.2010.05.015.
    Herrmann, J.-M., 2010b. Photocatalysis fundamentals revisited to avoid several misconceptions. Appl. Catal. B Environ. 99(3-4), 461-468.https://doi.org/10.1016/j.apcatb.2010.05.012.
    Huo, P., Yan, Y., Li, S., Li, H., Huang, W., 2010. Floating photocatalysts of flyash cenospheres supported AgCl/TiO2 films with enhanced Rhodamine B photodecomposition activity. Desalination 256(1-3), 196-200. https://doi.org/10.1016/j.desal.2010.01.012.
    Li, J., Liu, B., Han, X., Liu, B., Jiang, J., Liu, S., Zhang, J., Shi, H., 2021a.Direct Z-scheme TiO2-x/AgI heterojunctions for highly efficient photocatalytic degradation of organic contaminants and inactivation of pathogens. Separ. Purif. Technol. 261, 118306. https://doi.org/10.1016/j.seppur.2021.118306.
    Li, X., Wang, J., Zhang, J., Zhao, C., Wu, Y., He, Y., 2022. Cadmium sulfide modified zinc oxide heterojunction harvesting ultrasonic mechanical energy for efficient decomposition of dye wastewater. J. Colloid Interface Sci. 607, 412-422. https://doi.org/10.1016/j.jcis.2021.09.004.
    Li, Z., Zhang, Q., Wang, L., Yang, J., Wu, Y., He, Y., 2021b. Novel application of Ag/PbBiO2I nanocomposite in piezocatalytic degradation of rhodamine B via harvesting ultrasonic vibration energy. Ultrason. Sonochem. 78, 105729. https://doi.org/10.1016/j.ultsonch.2021.105729.
    Liu, S., Zhu, J., Guo, X., Ge, J., Wu, H., 2015. Preparation of a-Fe2O3-TiO2/fly ash cenospheres photocatalyst and its mechanism of photocatalytic degradation. Colloids Surf. A Physicochem. Eng. Asp. 484, 434-440.https://doi.org/10.1016/j.colsurfa.2015.08.033.
    Murgolo, S., Ceglie, C.D., Iaconi, C.D., Mascolo, G., 2021. Novel TiO2-based catalysts employed in photocatalysis and photoelectrocatalysis for effective degradation of pharmaceuticals (PhACs) in water: A short review.Current Opinion in Green and Sustainable Chemistry 30, 100473. https://doi.org/10.1016/j.cogsc.2021.100473.
    Shi, T., Hao, X., Ma, J., Liu, H., Gai, G., Zhang, Y., 2017. Preparation of Ag2O/TiO2/fly-ash cenospheres composite photocatalyst. Mater. Lett. 183, 444-447. https://doi.org/10.1016/j.matlet.2016.07.079.
    Tian, C., Zhang, Q., Jiang, B., Tian, G., Fu, H., 2011. Glucose-mediated solution-solid route for easy synthesis of Ag/ZnO particles with superior photocatalytic activity and photostability. J. Alloy. Compd. 509, 6935-6941. https://doi.org/10.1016/j.jallcom.2011.04.005.
    Wang, L., Wang, J., Ye, C., Wang, K., Zhao, C., Wu, Y., He, Y., 2021. Photodeposition of CoOx nanoparticles on BiFeO3 nanodisk for efficiently piezocatalytic degradation of rhodamine B by utilizing ultrasonic vibration energy. Ultrason. Sonochem. 80(5), 105813. https://doi.org/10.1016/j.ultsonch.2021.105813.
    Ye, S., Chen, Y., Yao, X., Zhang, J., 2021. Simultaneous removal of organic pollutants and heavy metals in wastewater by photoelectrocatalysis: A review. Chemosphere 273, 128503. https://doi.org/10.1016/j.chemosphere. 2020.128503.
    Yuan, Y., Guo, R., Hong, L., Ji, X., Lin, Z., Li, Z., Pan, W., 2021. A review of metal oxide-based Z-scheme heterojunction photocatalysts: Actualities and developments. Mater. Today Energy 21, 100829. https://doi.org/10.1016/j.mtener.2021.100829.
    Zhang, Y., Liu, L., 2013. Fly ash-based geopolymer as a novel photocatalyst for degradation of dye from wastewater. Particuology 11(3), 353-358.https://doi.org/10.1016/j.partic.2012.10.007.
    Zheng, S., Li, X., Zhang, J., Wang, J., Zhao, C., Hu, X., Wu, Y., He, Y., 2023.One-step preparation of MoOx/ZnS/ZnO composite and its excellent performance in piezocatalytic degradation of Rhodamine B under ultrasonic vibration. J. Environ. Sci. 125, 1-13. https://doi.org/10.1016/j.jes.2021.10.028.
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