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Efficient photodegradation of organic dyes from industrial wastewater using novel Ni-decorated g-C3N4-TiO2 photocatalysts

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Abstract

Industrial wastewater has detrimental impacts on aquatic ecosystems and the environment. Among the significant contributors to water pollution are organic dyes, which are frequently released into untreated outflow water. Hence, effective degradation of these dyes and their derivatives using heterogeneous photocatalysts is imperative before discharge. In this study, we successfully synthesized a novel nanocomposite by g-C3N4 coupled with TiO2 and decorated it with Ni followed by cost-effective methods. Immaculate g-C3N4 coupled with TiO2 (TiO2+) and modified with nickel (Ni+) was synthesized through melamine calcination followed by hydrothermal processing. Characterization through diverse electro-analytical techniques, including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR), and Brunauer-Emmett-Teller (BET), was conducted on the novel photocatalysts. XRD results revealed their high crystallinity, enhanced through modification. The effectiveness of these photocatalysts in degrading the organic dye methylene blue (MB) under UV–Vis light was thoroughly investigated. It also investigated how the results were affected by important factors involving contact time, dye and photocatalyst dosages, pH, and reusability. Among the photocatalysts, the composite g-C3N4-TiO2s, decorated with Ni, exhibited exceptional performance, displaying substantial degradation efficacy. The findings demonstrate that the novel g-C3N4-based photocatalysts are highly efficient at degrading organic dyes, so the work is expected to be the best contribution in the photodegradation study of organic contaminants.

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The data and materials that support the findings of this study are available from the corresponding authors upon reasonable request.

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Authors and Affiliations

  1. National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian, 223003, People’s Republic of China

    Li Jin & Cao Haotian

  2. Department of Chemistry, Hazara University, Mansehra, KPK, 21300, Pakistan

    Qazi Tanzeel, Umar Arif, Farman Ali & Yasir Akbar

  3. Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Centre for Deep Utilization Technology of Rock-salt Resource, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian, 223003, China

    Nisar Ali

  4. School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, People’s Republic of China

    Sahid Mehmood

  5. School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, People’s Republic of China

    Fazal Raziq

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  1. Li Jin
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Contributions

Qazi Tanzeel: Conceptualization; Methodology; Validation; Writing—original draft; Umar Arif and Yasir Akbar: Writing—review & editing; Visualization. Sahid Mehmood: Data curation; Writing—review & editing. Nisar Ali: Writing—review & editing; Visualization. Cao Haotian and Fazal Raziq: Conceptualization; Methodology; Validation; Formal analysis. Farman Ali and Li Jin: Writing—review & editing, Supervision; Project administration.

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Correspondence to Li Jin, Farman Ali or Sahid Mehmood.

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Jin, L., Tanzeel, Q., Arif, U. et al. Efficient photodegradation of organic dyes from industrial wastewater using novel Ni-decorated g-C3N4-TiO2 photocatalysts. Colloid Polym Sci 302, 487–502 (2024). https://doi.org/10.1007/s00396-023-05211-0

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