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Advances in the Synthesis of Nanostructured High-Porosity-Based Adsorbents and Catalysts for Water Purification

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Porous Materials".

Deadline for manuscript submissions: closed (20 March 2024) | Viewed by 2729

Special Issue Editors


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Guest Editor
School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
Interests: energy storage; water electrolysis; environmental chemistry; polymer chemistry; materials chemistry; nanomaterials
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
Interests: water splitting; electrocatalysis; photocatalysis; materials chemistry; organic synthesis

E-Mail Website
Guest Editor
School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
Interests: nanomaterials; water splitting; electrocatalysis; photocatalysis; materials chemistry

Special Issue Information

Dear Colleagues,

Water is a crucial to the survival of humans and other aquatic animals. However, modern industrialization has contaminated the world's freshwater supplies with various contaminants, including organic wastes, oils, pharmaceutical wastes, heavy metals, dyes, fluoride, agricultural wastes, and more. This contamination could seriously threaten the environment. Due to its toxicity in concentrations beyond the permissible limit, the issue of elevated water contamination caused by these contaminants is a well-known global environmental concern. Therefore, wastes from the relevant industry should be removed in order to ensure that they do not enter natural surface waterways. The application of porous structured materials can considerably remove the quantities of these contaminants. Novel materials and feasible techniques must be developed in order to remove contaminants from water. As a result, due to their high porosity and high surface areas, the synthesis of high-porosity nanostructured materials over the past decade has advanced numerous disciplines, including water purification. The processes employed include the sol–gel method, extraction, co-precipitation, solvothermal, hydrothermal and sono-chemical methods, and chemical vapor deposition. High-porosity nanostructured materials can be produced easily and effectively for water treatment. Additionally, more effective hybrid nanostructured materials that can be employed in low-cost processes might be created, which would be useful for water purification. This Special Issue aims to present the latest research into various effective nanostructured materials that can be utilized to inexpensively clean water.

  • Potential topics include, but are not limited to, the following:
  • Nanocomposites for dye removal;
  • Synthesis of high-porosity materials;
  • Modification of materials for water purification;
  • Photocatalysts for degradation of organic pollutants;
  • Mechanism of adsorption;
  • Mechanism of photodegradation;
  • High-adsorption-capacity-based adsorbents;
  • Effective removal of organic dyes;
  • Universal water purification.

Dr. Sriram Ganesan
Dr. Karuppaiah Selvakumar
Dr. Muthuraj Arunpandian
Guest Editors

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Keywords

  • pollutants
  • removal
  • adsorbents
  • nanomaterials
  • adsorption
  • photocatalyst
  • advanced oxidation process
  • nanostructured materials
  • high porous materials

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Published Papers (1 paper)

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Research

16 pages, 6757 KiB  
Article
Design of V2O5 Blocks Decorated with Garlic Peel Biochar Nanoparticles: A Sustainable Catalyst for the Degradation of Methyl Orange and Its Antioxidant Activity
by Perumal Sarojini, Karuppasamy Leeladevi, Thavuduraj Kavitha, Krishnamoorthy Gurushankar, Ganesan Sriram, Tae Hwan Oh and Karthik Kannan
Materials 2023, 16(17), 5800; https://doi.org/10.3390/ma16175800 - 24 Aug 2023
Cited by 28 | Viewed by 2368
Abstract
In this study, novel V2O5-decorated garlic peel biochar (VO/GPB) nanocomposites are prepared via the facile hydrothermal technique. As-synthesized VO/GPB is characterized by various spectroscopic and analytical techniques. The surface morphology of the as-prepared samples was predicted by SEM analysis, [...] Read more.
In this study, novel V2O5-decorated garlic peel biochar (VO/GPB) nanocomposites are prepared via the facile hydrothermal technique. As-synthesized VO/GPB is characterized by various spectroscopic and analytical techniques. The surface morphology of the as-prepared samples was predicted by SEM analysis, which shows that the block-like V2O5 was uniformly decorated on the stone-like GPB surface. The elemental mapping analysis confirms the VO/GPB composite is composed of the following elements: C, O, Na, Mg, Si, P, K, and V, without any other impurities. The photocatalytic activity of the VO/GPB nanocomposite was examined by the degradation of methyl orange (MO) under the irradiation of visible light; 84% degradation efficiency was achieved within 30 min. The reactive oxidative species (ROS) study reveals that hydroxyl and superoxide radicals play an essential role in MO degradation. Moreover, the antioxidant action of the VO/GPB nanocomposite was also investigated. From the results, the VO/GPB composite has higher antioxidant activity compared to ascorbic acid; the scavenging effect increased with increasing concentrations of VO/GPB composite until it reached 40 mg/L, where the scavenging effect was the highest at 93.86%. This study will afford innovative insights into other photocatalytic nanomaterials with effective applications in the field of photocatalytic studies with environmental compensation. Full article
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