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15th Anniversary of Catalysts: Shaping a Sustainable Future Through...
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15th Anniversary of Catalysts: Shaping a Sustainable Future Through Catalysis

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalysis in Organic and Polymer Chemistry".

Deadline for manuscript submissions: 31 March 2026 | Viewed by 1971

Special Issue Editors

Prof. Dr. Kotohiro Nomura

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Guest Editor
Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University (TMU), 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
Interests: catalysis; organometallic chemistry; polymer chemistry
Special Issues, Collections and Topics in MDPI journals
Dr. Mário Manuel Quialheiro Simões

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Guest Editor
LAQV-Requimte, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
Interests: catalysis; green chemistry; metalloporphyrins; MOFs; zeolites
Special Issues, Collections and Topics in MDPI journals
Dr. Werner Oberhauser

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Guest Editor
Istituto di Chimica dei Composti Organometallici (CNR-ICCOM), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
Interests: synthesis of heterogenous catalysts for hydrogenation and aerobic oxidation reactions; characterization of nanostructured material by X-ray diffraction
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Raffaella Mancuso

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Guest Editor
Department of Chemistry and Chemical Technology, University of Calabria, Via Pietro Bucci 12/C, 87036 Arcavacata di Rende, CS, Italy
Interests: carbonylation; catalysis; heterocycles; materials; organic synthesis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are thrilled to invite you to contribute to an upcoming Special Issue celebrating the 15th Anniversary of Catalysts! As we mark this significant milestone, we are particularly focused on the pivotal role that catalysis will play in sustainability and green chemistry in the coming decades. This Special Issue, organized by members of the Catalysts Editorial Board, will highlight advancements in catalysis that directly address global environmental challenges. We welcome manuscripts that explore innovative catalytic solutions for a more sustainable future, including, but not limited to, eco-friendly catalytic processes for efficient and waste-reducing synthesis, novel catalysts for renewable energy production and storage, sustainable polymerization techniques and the development of circular polymers, mechanistic insights into catalytic reactions, catalysis for pollution prevention and remediation, and bio-inspired and biocatalytic approaches for sustainable chemical transformations. To achieve the widest possible impact, we strongly encourage submissions from a diverse array of authors. We also invite you to reach out to colleagues and collaborators who are leaders in these critical areas. We look forward to receiving your contributions and jointly shaping the future of catalysis to create a healthier planet.

Prof. Dr. Kotohiro Nomura
Dr. Mário Manuel Quialheiro Simões
Dr. Werner Oberhauser
Prof. Dr. Raffaella Mancuso
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 250 words) can be sent to the Editorial Office for assessment.

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 2200 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

  • catalysis
  • sustainability
  • organic chemistry
  • polymer chemistry
  • green chemistry

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Published Papers (3 papers)

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Research

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15 pages, 2042 KB  
Article
Bi-Dentate Pyridyl Amine-Derived Complexes of Aluminium: Synthesis, Structure and ROP Capability
by Shunsuke Sato, Ignas Motuzis, Mark R. J. Elsegood, Kotohiro Nomura and Carl Redshaw
Catalysts 2025, 15(12), 1119; https://doi.org/10.3390/catal15121119 - 1 Dec 2025
Viewed by 286
Abstract
The pyridylamines 2,6-Me2C6H3NHCR2-C5H5H-2 (R = H, L1H; Me, L2H) on treatment with Me3Al (one equivalent) afforded the complexes [Al(Me)2(L1)] (1 [...] Read more.
The pyridylamines 2,6-Me2C6H3NHCR2-C5H5H-2 (R = H, L1H; Me, L2H) on treatment with Me3Al (one equivalent) afforded the complexes [Al(Me)2(L1)] (1) and [Al(Me)2L2] (2), respectively. Use of excess L1H led to [Al(Me)(L1)2] (3). The molecular structures of 1–3 are reported, and the three complexes, as well as the parent compounds L1H and L2H, have been screened, in the presence of benzyl alcohol (BnOH), as catalysts for the ring opening polymerization (ROP) of ε-caprolactone and δ-valerolactone. Results revealed that these ROPs proceed in a controlled nature (Đ ≤ 1.33 for ε-CL and ≤1.48 for δ-VL) in the process without catalyst deactivation, whilst the products formed were predominantly linear with OBn/OH end groups; L1H and L2H exhibited little or no activity. Full article
(This article belongs to the Special Issue 15th Anniversary of Catalysts: Shaping a Sustainable Future Through Catalysis)
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15 pages, 2832 KB  
Article
Halloysite@Polydopamine Nanoplatform for Ultrasmall Pd and Cu Nanoparticles: Suitable Catalysts for Hydrogenation and Reduction Reactions
by Marina Massaro, Chiara D’Acunzi, Stefano Paganelli, Maria Laura Alfieri, Leonarda F. Liotta, Alberto Lopez-Galindo, Raquel de Melo Barbosa, Oreste Piccolo, Rita Sánchez-Espejo, César Viseras and Serena Riela
Catalysts 2025, 15(11), 1029; https://doi.org/10.3390/catal15111029 - 1 Nov 2025
Viewed by 420
Abstract
The design of sustainable nanomaterials for catalysis is a key challenge in green chemistry. Herein, we report the synthesis of halloysite nanotube (Hal)-based nanomaterials selectively functionalized with a bio-inspired polydopamine (PDA) coating, which enables the controlled anchoring of palladium and copper nanoparticles (PdNPs [...] Read more.
The design of sustainable nanomaterials for catalysis is a key challenge in green chemistry. Herein, we report the synthesis of halloysite nanotube (Hal)-based nanomaterials selectively functionalized with a bio-inspired polydopamine (PDA) coating, which enables the controlled anchoring of palladium and copper nanoparticles (PdNPs and CuNPs). This mild and ecofriendly strategy yields highly dispersed and ultrasmall (<5 nm) metal nanoparticles without the need for surfactants or harsh reagents. The resulting materials, Hal@PDA/PdNPs and Hal@PDA/CuNPs, were evaluated in two well-established model reactions commonly employed to probe catalytic performance: cinnamaldehyde hydrogenation and 4-nitrophenol reduction. Hal@PDA/PdNPs displayed complete conversion and >90% selectivity toward hydrocinnamaldehyde at low Pd loading (0.8 wt%) and maintained its efficiency over six catalytic cycles (TOF up to 0.1 s−1), while Hal@PDA/CuNPs retained high activity through eight consecutive runs in the reduction of 4-nitrophenol. Hal@PDA/CuNPs proved to be an excellent recyclable catalyst for the reduction of 4-nitrophenol, retaining high activity through eight consecutive runs. Overall, this study introduces a robust and modular approach to fabricating halloysite-based nanocatalysts, demonstrating their potential as green platforms for metal nanoparticle-mediated transformation. Full article
(This article belongs to the Special Issue 15th Anniversary of Catalysts: Shaping a Sustainable Future Through Catalysis)
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Review

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36 pages, 3007 KB  
Review
Calcium Oxide Nanoparticles as Green Nanocatalysts in Multicomponent Heterocyclic Synthesis: Mechanisms, Metrics, and Future Directions
by Surtipal Sharma, Ruchi Bharti, Monika Verma, Renu Sharma, Adília Januário Charmier and Manas Sutradhar
Catalysts 2025, 15(10), 970; https://doi.org/10.3390/catal15100970 - 11 Oct 2025
Viewed by 986
Abstract
The growing demand for sustainable and efficient synthetic methodologies has brought nanocatalysis to the forefront of modern organic chemistry, particularly in the construction of heterocyclic compounds through multicomponent reactions (MCRs). Among various nanocatalysts, calcium oxide nanoparticles (CaO NPs) have gained significant attention because [...] Read more.
The growing demand for sustainable and efficient synthetic methodologies has brought nanocatalysis to the forefront of modern organic chemistry, particularly in the construction of heterocyclic compounds through multicomponent reactions (MCRs). Among various nanocatalysts, calcium oxide nanoparticles (CaO NPs) have gained significant attention because of their strong basicity, thermal stability, low toxicity, and cost-effectiveness. This review provides a comprehensive account of the recent strategies using CaO NPs as heterogeneous catalysts for the green synthesis of nitrogen- and oxygen-containing heterocycles through MCRs. Key reactions such as Biginelli, Hantzsch, and pyran annulations are discussed in detail, with emphasis on atom economy, reaction conditions, product yields, and catalyst reusability. In many instances, CaO NPs have enabled solvent-free or aqueous protocols with high efficiency and reduced reaction times, often under mild conditions. Mechanistic aspects are analyzed to highlight the catalytic role of surface basic sites in facilitating condensation and cyclization steps. The performance of CaO NPs is also compared with other oxide nanocatalysts, showcasing their benefits from green metrics evaluation like E-factor and turnover frequency. Despite significant progress, challenges remain in areas such as asymmetric catalysis, industrial scalability, and catalytic stability under continuous use. To address these gaps, future directions involving doped CaO nanomaterials, hybrid composites, and mechanochemical approaches are proposed. This review aims to provide a focused and critical perspective on CaO NP-catalyzed MCRs, offering insights that may guide further innovations in sustainable heterocyclic synthesis. Full article
(This article belongs to the Special Issue 15th Anniversary of Catalysts: Shaping a Sustainable Future Through Catalysis)
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