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Catalysts
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Advanced Nanomaterials for Emerging Contaminants Removal in the Environment and...
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Advanced Nanomaterials for Emerging Contaminants Removal in the Environment and Sustainable Development

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalysis for Sustainable Energy".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 2808

Special Issue Editors

Dr. Pham Thi Huong

E-Mail Website
Guest Editor
Department of Materials Science and Engineering, Gachon University, 1342 Seongnam-daero, Seongnam 13120, Republic of Korea
Interests: nanomaterials; organic compounds; inorganic compounds; photocatalysts, renewable energy
Dr. Minh Viet Nguyen

E-Mail Website
Guest Editor
Key Laboratory of Advanced Materials for Green Growth, VNU University of Science, Ha Noi, Vietnam
Interests: photocatalyst; nanomaterial; biochar; renewable energy

Special Issue Information

Dear Colleagues,

Advanced nanomaterials for the environment and green growth can help produce cleaner, more efficient, and valuable products to address our present environment-related concerns for a more sustainable future. Therefore, studies on the applications of advanced nanomaterials for green growth are hot topics in environmental chemistry, which involve the contaminated environment, chemicals that are naturally present, and their effects on the environment through the release of chemicals. Newly synthesized advanced nanomaterials or existing modified nanomaterials such as photocatalysts, carbon-based materials, and nanoporous materials have great potential for wastewater treatment, air purification, energy storage/conversion, CO2 storage/conversion, water splitting, and global warming mitigation. The aim of this Special Issue is to highlight recent advances in this area and provide a platform for future developments of novel multifunctional nanomaterials in design, synthesis, characterization, and their energy and environmental applications. Potential topics include, but are not limited to, the following: the development of nanostructured photocatalytic materials for environmental remediation and green growth; the development of catalytic nanomaterials and their applications in green chemical processes; the development of adsorbent materials for environmental pollution control; the development of nanocomposite and hybrid-nanocomposite materials, multifunctional materials, and their applications in environmental pollution control and green industries; the development of advanced materials for effective, environmentally friendly, and sustainable agriculture in accordance with low carbon agriculture orientation; and the development of advanced materials for water splitting and CO2 conversion.

Dr. Pham Thi Huong
Dr. Minh Viet Nguyen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • nanomaterial
  • photocatalysts
  • green growth
  • carbon-based materials
  • renewable energy
  • water treatment

Published Papers (2 papers)

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Research

26 pages, 7380 KiB  
Article
N-Doped TiO2-Nb2O5 Sol–Gel Catalysts: Synthesis, Characterization, Adsorption Capacity, Photocatalytic and Antioxidant Activity
by Maria E. K. Fuziki, Laura S. Ribas, Eduardo Abreu, Luciano Fernandes, Onélia A. A. dos Santos, Rodrigo Brackmann, Jose L. D. de Tuesta, Angelo M. Tusset and Giane G. Lenzi
Catalysts 2023, 13(9), 1233; https://doi.org/10.3390/catal13091233 - 23 Aug 2023
Cited by 1 | Viewed by 996
Abstract
TiO2-based semiconductors are formidable photocatalysts for redox reaction applications. Although N-doped TiO2-Nb2O5 catalysts have already been explored in the literature, studies on their antioxidant activity are scarce, and systematic investigations on the effects of synthesis parameters [...] Read more.
TiO2-based semiconductors are formidable photocatalysts for redox reaction applications. Although N-doped TiO2-Nb2O5 catalysts have already been explored in the literature, studies on their antioxidant activity are scarce, and systematic investigations on the effects of synthesis parameters over a wide range of %Nb and NH4OH concentrations are limited. In addition, the relationship between optimal pH and %Nb has not yet been adequately explored. In the present work, the sol–gel synthesis of N-doped TiO2-Nb2O5 catalysts was optimized using a design of experiments approach focused on photocatalysis, adsorption, and antioxidant applications. The samples were characterized by TGA, SEM/EDS, XRD, PZC tests, photoacoustic spectroscopy, and N2-adsorption/desorption experiments. The salicylic acid (SA) degradation tests and DPPH radical scavenging assays demonstrated the superior photocatalytic activity (up to 72.9% SA degradation in 30 min, pH 5) and antioxidant capacity (IC50 = 88.9 μg mL−1) of pure TiO2 compared to the N-doped TiO2-Nb2O5 catalysts. The photocatalytic activity, however, proved to be intensely dependent on the pH and %Nb interaction, and at pH 3, the 25Nb-1N-400 catalyst promoted more significant SA degradation (59.9%) compared to pure TiO2 (42.8%). In the methylene blue (MB) adsorption tests, the catalysts N-doped TiO2-Nb2O5 showed removals at least seven times greater than TiO2 catalysts without Nb. Full article
(This article belongs to the Special Issue Advanced Nanomaterials for Emerging Contaminants Removal in the Environment and Sustainable Development)
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21 pages, 13493 KiB  
Article
Photocatalytic Performances and Antifouling Efficacies of Alternative Marine Coatings Derived from Polymer/Metal Oxides (WO3@TiO2)-Based Composites
by Sunida Thongjamroon, Jatuphorn Wootthikanokkhan and Nuchthana Poolthong
Catalysts 2023, 13(4), 649; https://doi.org/10.3390/catal13040649 - 25 Mar 2023
Cited by 2 | Viewed by 1413
Abstract
This work concerns development of alternative antifouling paints for marine applications using composite metal oxides derived from TiO2 and WO3. Composite metal oxides with a variety of tungsten content were prepared via a sol–gel process using titanium isopropoxide and sodium [...] Read more.
This work concerns development of alternative antifouling paints for marine applications using composite metal oxides derived from TiO2 and WO3. Composite metal oxides with a variety of tungsten content were prepared via a sol–gel process using titanium isopropoxide and sodium tungstate dihydrate as the precursors. The crystalline phase, bandgap energy, morphology, surface structure, and electronic states of the synthesized products were then characterized and confirmed by XPS, XRD, UV/Vis spectroscopy, SEM-EDX, and TEM techniques. Photocatalytic performance polymer film loaded with composite metal oxides containing 10% by mole of WO3 (10%WO3@TiO2) was confirmed both under UV irradiation and in the dark. The results are discussed in light of oxygen vacancies and the presence of heterojunctions between the TiO2 and WO3 domains in the composites, which eventually lead to suppression of charges recombination. Finally, antifouling and the antimicrobial efficacy of the polymer film loaded with composite metal oxide particles (10%WO3@TiO2) were evaluated under static marine immersion conditions using Zobell Marine agar. After 30 days, the percentage fouling coverage (16.35%), colonies number (CFU value 12 × 103), and percentage reduction of colonies (92.94%), were obtained, which significantly outperformed those of the control (the bare substrate). Full article
(This article belongs to the Special Issue Advanced Nanomaterials for Emerging Contaminants Removal in the Environment and Sustainable Development)
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