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Advanced Catalytic Materials (Second Edition)
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Advanced Catalytic Materials (Second Edition)

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Materials Science".

Deadline for manuscript submissions: 20 November 2025 | Viewed by 3322

Special Issue Editor

Dr. Julio Macedo

E-Mail Website
Guest Editor
Institute of Chemistry, University of Brasilia, Brasilia, DF, Brazil
Interests: inorganic chemistry; nanomaterials; porous materials; catalysts; green chemistry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Catalytic processes are commonly utilized in the chemical industry, and the development of advanced materials has an important economic impact on our society. The design of new experimental synthetic methodologies is a key component in catalyst research, leading to the development of structures with morphology control at the nanometer scale. The engineering of different shapes, sizes, crystal structures and physicochemical properties can potentially result in highly active and selective catalytic materials. Therefore, this Special Issue welcomes original research papers describing advancements in the synthesis and characterization of novel catalytic materials. Potential topics include, but are not limited to, the following:

  • New synthetic methodologies for the development of advanced catalytic materials;
  • The development of cleaner and sustainable reaction processes using heterogeneous catalysts;
  • Biomass conversion to fine chemicals using catalytic materials;
  • Biofuel production by heterogeneous catalysts;
  • Photocatalytic processes using advanced new materials;
  • The design of porous and/or supported materials for environmental remediation;
  • The application of homogeneous and heterogeneous catalysts in fine chemistry;
  • The production of composites or hybrid materials for heterogeneous catalysis.

Prof. Dr. Julio Lemos de Macedo
Guest Editor

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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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

  • synthetic routes
  • nanomaterials
  • catalysis
  • sustainability
  • biomass
  • biofuel
  • photocatalysis
  • fine chemistry

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Related Special Issue

Published Papers (3 papers)

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Research

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18 pages, 5258 KiB  
Article
Heterogeneous Activation of NaClO by Nano-CoMn2O4 Spinel for Methylene Blue Decolorization
by Tongwen Zhao, Gang Han, Juan Bai and Xiaogang Wu
Int. J. Mol. Sci. 2025, 26(3), 940; https://doi.org/10.3390/ijms26030940 - 23 Jan 2025
Viewed by 658
Abstract
In this study, the nano-spinel CoMn2O4 was synthesized by coprecipitation pyrolysis and employed to heterogeneously activate hypochlorite (NaClO) for the oxidative decolorization of methylene blue (MB). The crystal structure, elemental composition, surface morphology, and microstructure of the prepared CoMn2 [...] Read more.
In this study, the nano-spinel CoMn2O4 was synthesized by coprecipitation pyrolysis and employed to heterogeneously activate hypochlorite (NaClO) for the oxidative decolorization of methylene blue (MB). The crystal structure, elemental composition, surface morphology, and microstructure of the prepared CoMn2O4 nano-spinel were analyzed using a series of characterization techniques. The pyrolysis temperature was screened on the basis of MB decolorization efficiency and the leaching of metal ions during the reaction. The MB decolorization efficiency was compared using different catalysts and process. The impacts of CoMn2O4 dosage, effective chlorine dose, MB concentration, and initial pH on MB decolorization were explored. The catalytic mechanism of MB oxidation was elucidated through quenching experiments combined with radical identification. The degradation pathway of MB was preliminarily proposed based on the detection of the intermediates. The reusability of recycled CoMn2O4 was finally investigated. The results revealed that maximal MB oxidation efficiency and minimal leaching of Co and Mn ions were achieved at the calcination temperature of 600 °C. Complete oxidative decolorization of MB within 40 min was obtained at an initial MB concentration of 50 mg/L, a CoMn2O4 dosage of 1 g/L, an effective chlorine dose of 0.1%, and an initial pH of 4.3. Superoxide radical (O2•−) was found to be dominantly responsible for MB decolorization according to the results of radical scavenging experiments and electron paramagnetic resonance. The CoMn2O4 spinel can be recycled for five cycles with the MB removal in the range of 90.6~98.7%. Full article
(This article belongs to the Special Issue Advanced Catalytic Materials (Second Edition))
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23 pages, 4787 KiB  
Article
The Facile Production of p-Chloroaniline Facilitated by an Efficient and Chemoselective Metal-Free N/S Co-Doped Carbon Catalyst
by Juan-José Villora-Picó, Gema Gil-Muñoz, Antonio Sepúlveda-Escribano and M. Mercedes Pastor-Blas
Int. J. Mol. Sci. 2024, 25(17), 9603; https://doi.org/10.3390/ijms25179603 - 4 Sep 2024
Viewed by 1659
Abstract
The catalytic hydrogenation of the toxic and harmful p-chloronitrobenzene to produce the value-added p-chloroaniline is an essential reaction for the sustainable chemical industry. Nevertheless, ensuring satisfactory control of its chemoselectivity is a great challenge. In this work, a N/S co-doped metal-free [...] Read more.
The catalytic hydrogenation of the toxic and harmful p-chloronitrobenzene to produce the value-added p-chloroaniline is an essential reaction for the sustainable chemical industry. Nevertheless, ensuring satisfactory control of its chemoselectivity is a great challenge. In this work, a N/S co-doped metal-free carbon catalyst has been fabricated by using cysteine as a source of C, N, and S. The presence of calcium citrate (porogen agent) in the mixture subjected to pyrolysis provided the carbon with porosity, which permitted us to overcome the issues associated with the loss of heteroatoms during an otherwise necessary activation thermal treatment. Full characterization was carried out and the catalytic performance of the metal-free carbon material was tested in the hydrogenation reaction of p-chloronitrobenzene to selectively produce p-chloroaniline. Full selectivity was obtained but conversion was highly dependent on the introduction of S due to the synergetic effect of S and N heteroatoms. The N/S co-doped carbon (CYSCIT) exhibits a mesoporous architecture which favors mass transfer and a higher doping level, with more exposed N and S doping atoms which act as catalytic sites for the hydrogenation of p-chloronitrobenzene, resulting in enhanced catalytic performance when compared to the N-doped carbon obtained from melamine and calcium citrate (MELCIT) used as a reference. Full article
(This article belongs to the Special Issue Advanced Catalytic Materials (Second Edition))
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Review

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19 pages, 2074 KiB  
Review
Biphasic Catalytic Conversion of Olefins in Aqueous Media: A Systematic Review
by Angeliki Chira and Nikolaos C. Kokkinos
Int. J. Mol. Sci. 2025, 26(9), 4028; https://doi.org/10.3390/ijms26094028 - 24 Apr 2025
Viewed by 385
Abstract
Aqueous biphasic catalysis has gained recognition as a sustainable and efficient method that combines the advantages of both homogeneous and heterogeneous catalytic systems. This approach enables the separation and recycling of catalysts, leading to reduced environmental impact and lower operational costs. A key [...] Read more.
Aqueous biphasic catalysis has gained recognition as a sustainable and efficient method that combines the advantages of both homogeneous and heterogeneous catalytic systems. This approach enables the separation and recycling of catalysts, leading to reduced environmental impact and lower operational costs. A key component of this method is the use of transition metal catalysts, which are crucial for facilitating various reactions when paired with different types of ligands, primarily hydrophiles. This combination is essential for achieving high success rates in recyclable catalytic systems. The reaction conditions, including temperature, pressure, and pH, significantly influence catalytic performance. However, challenges such as limited substrate solubility and catalyst leaching persist, underscoring the need for further research into advanced ligand design, catalyst immobilization techniques, and scalable process integration. This review systematically examines recent experiments in the aqueous biphasic catalysis of olefins, following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses framework. From an initial pool of 597 articles, 104 were found to be relevant and focused specifically on aqueous biphasic catalysis. The study investigates key reactions, the factors that influence these biphasic reactions, and the catalytic systems that facilitate them. By highlighting both progress and ongoing challenges, this work underscores the potential of aqueous biphasic catalysis to bridge the gap between green chemistry principles and industrial applications. Full article
(This article belongs to the Special Issue Advanced Catalytic Materials (Second Edition))
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