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Development of Sustainable Heterogeneous Catalysts for the Photocatalytic Treatment of Effluents

Author

Listed:
  • Herbet B. Sales

    (Laboratory of Materials Technology (LTM), Department of Materials Engineering, Federal University of Campina Grande (UFCG), Campina Grande, Paraíba 58429-900, Brazil)

  • Romualdo R. Menezes

    (Laboratory of Materials Technology (LTM), Department of Materials Engineering, Federal University of Campina Grande (UFCG), Campina Grande, Paraíba 58429-900, Brazil)

  • Gelmires A. Neves

    (Laboratory of Materials Technology (LTM), Department of Materials Engineering, Federal University of Campina Grande (UFCG), Campina Grande, Paraíba 58429-900, Brazil)

  • João J. N. de Souza

    (Laboratory of Characterization and Development of Nanomaterials (LANANO), Federal Institute of Paraiba (IFPB), João Pessoa, Paraíba 58011-000, Brazil)

  • Jailson M. Ferreira

    (Laboratory of Characterization and Development of Nanomaterials (LANANO), Federal Institute of Paraiba (IFPB), João Pessoa, Paraíba 58011-000, Brazil)

  • Laís Chantelle

    (Research and Extension Nucleus: Fuel and Materials Laboratory (NPE/LACOM), Department of Chemistry, Federal University of Paraiba (UFPB), João Pessoa, Paraíba 58051-900, Brazil)

  • André L. Menezes de Oliveira

    (Research and Extension Nucleus: Fuel and Materials Laboratory (NPE/LACOM), Department of Chemistry, Federal University of Paraiba (UFPB), João Pessoa, Paraíba 58051-900, Brazil)

  • Hélio de L. Lira

    (Laboratory of Materials Technology (LTM), Department of Materials Engineering, Federal University of Campina Grande (UFCG), Campina Grande, Paraíba 58429-900, Brazil)

Abstract

The inadequate discharge of effluents from different sources without prior treatment can impact the characteristics of soil and water, which reflect serious environmental problems. Advanced oxidative processes (AOP) appear as a viable alternative for environmental remediation, including wastewater treatment. Herein, α-MoO 3 and α-Fe 2 O 3 semiconductors were synthesized at low temperature by a Pechini-based method and then applied in photocatalysis. The catalytic efficiency was performed under visible light toward the degradation of an organic persistent pollutant (Rhodamine B dye, RhB), commonly present in industries wastewater. The results indicated that the synthesized α-MoO 3 or α-Fe 2 O 3 photocatalysts presented a pronounced activity and promoted an efficient RhB degradation after 15 min of reaction. α-MoO 3 had a degradation efficiency of 93% and 98%, while α-Fe 2 O 3 showed 67% and 100% RhB degradation without and with the addition of H 2 O 2 , respectively. These results suggest that the synthesized oxides have high oxi-reductive capacity, which can be used for a fast and effective photodegradation of RhB and other organic persistent pollutants to minimize environmental impacts.

Suggested Citation

  • Herbet B. Sales & Romualdo R. Menezes & Gelmires A. Neves & João J. N. de Souza & Jailson M. Ferreira & Laís Chantelle & André L. Menezes de Oliveira & Hélio de L. Lira, 2020. "Development of Sustainable Heterogeneous Catalysts for the Photocatalytic Treatment of Effluents," Sustainability, MDPI, vol. 12(18), pages 1-18, September.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:18:p:7393-:d:411001
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    References listed on IDEAS

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    1. Ong, Chin Boon & Ng, Law Yong & Mohammad, Abdul Wahab, 2018. "A review of ZnO nanoparticles as solar photocatalysts: Synthesis, mechanisms and applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 536-551.
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    Cited by:

    1. Zan Li & Hongkun Zhang & Wenrui Jiang, 2021. "Research on the Sustainable Heterogeneous Catalyst Development for Photocatalytic Treatment of Phenol," Sustainability, MDPI, vol. 13(9), pages 1-12, April.
    2. Jacqueline Roberta Tamashiro & Iara Souza Lima & Fábio Friol Guedes de Paiva & Lucas Henrique Pereira Silva & Daniela Vanessa Moris de Oliveira & Oswaldo Baffa & Angela Kinoshita, 2022. "Treatment of Sugarcane Vinasse Using Heterogeneous Photocatalysis with Zinc Oxide Nanoparticles," Sustainability, MDPI, vol. 14(23), pages 1-15, December.
    3. Siwei Yang & Yichao Zhuang & Yuanfang Shen & Weihang Han & Liangchen Chen & Qiang Sun & Di Wu & Hui Zheng, 2021. "Carbene Ligand-Doped Fe 2 O 3 Composite for Rapid Removal of Multiple Dyes under Sunlight," Sustainability, MDPI, vol. 13(22), pages 1-14, November.

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