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Reactions
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Feature Papers in Reactions in 2026
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Feature Papers in Reactions in 2026

A special issue of Reactions (ISSN 2624-781X).

Deadline for manuscript submissions: 31 December 2026 | Viewed by 3708

Editor

Prof. Dr. Dmitry Yu. Murzin

E-Mail Website
Guest Editor
Faculty of Science and Engineering, Åbo Akademi University, 20500 Turku, Finland
Interests: heterogeneous catalysis; catalytic reaction engineering; biomass valorization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue, entitled “Feature Papers in Reactions in 2026”, invites the submission of high-quality papers in open access format upon invitation from Editorial Board Members, the Editorial Office, or the Editor-in-Chief. Both original research articles and comprehensive review papers are welcome. Contributions to this Special Issue will be published in open access format after peer review. The potential topics include, but are not limited to, the following:

  • Reaction mechanisms;
  • Reaction kinetics;
  • Complex reactions, including catalytic ones;
  • Single-atom catalysis;
  • Reaction and reactor engineering (bio-, electro-, photo-, environmental, and chemical);
  • Micro-reactors and micro-reaction engineering;
  • Hydrogen production reactions;
  • Photocatalysis.

Prof. Dr. Dmitry Yu. Murzin
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 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-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Reactions is an international peer-reviewed open access quarterly 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 1200 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

  • reaction mechanisms
  • reaction kinetics
  • complex reactions, including catalytic ones
  • single-atom catalysis
  • reaction and reactor engineering (bio-, electro-, photo-, environmental, and chemical)
  • micro-reactors and micro-reaction engineering
  • hydrogen production reactions
  • photocatalysis

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Related Special Issues

Published Papers (7 papers)

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Research

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17 pages, 4608 KB  
Article
Oxygen Vacancy-Enriched BiVO4/TiO2 S-Scheme Heterojunction for Efficient Visible-Light Photocatalytic Degradation of Tetracycline Hydrochloride
by Qiang Wang, Chao Zhou, Zhiyuan Zeng, Ying Tang, Tiantian Li, Min Gao, Xiaobo Yan, Jinfeng Yang, Xia Zhou and Feng Yu
Reactions 2026, 7(3), 43; https://doi.org/10.3390/reactions7030043 - 15 Jul 2026
Viewed by 235
Abstract
Tetracycline hydrochloride (TCH) contamination poses serious environmental risks due to its persistence and bioaccumulation. Here we present an oxygen-vacancy-enriched BiVO4/TiO2 S-scheme heterojunction (5% BVO/TO) synthesized via a one-step solvothermal method. Under visible light (λ  >  420 nm), this composite achieves [...] Read more.
Tetracycline hydrochloride (TCH) contamination poses serious environmental risks due to its persistence and bioaccumulation. Here we present an oxygen-vacancy-enriched BiVO4/TiO2 S-scheme heterojunction (5% BVO/TO) synthesized via a one-step solvothermal method. Under visible light (λ  >  420 nm), this composite achieves 78.8% TCH degradation in 80 min, outperforming TiO2 (69.5%) and BiVO4 (34.1%). Its rate constant (0.0198 min−1) is 1.4 and 4.0 times higher than TiO2 and BiVO4, respectively, while retaining over 70% activity after four cycles. XPS and EPR confirm that oxygen vacancies serve as electron traps to suppress recombination, and UPS combined with DFT calculations validates directional electron transfer from BiVO4 to TiO2. Radical scavenging tests and in situ EPR reveal h+ > •OH > •O2− as the dominant reactive species. This study offers a robust design strategy for OV-enhanced S-scheme photocatalysts toward efficient, sustainable degradation of antibiotic pollutants. Full article
(This article belongs to the Special Issue Feature Papers in Reactions in 2026)
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18 pages, 1311 KB  
Article
Elucidation of Possible Reaction Mechanism and Catalyst Design via Kinetic Modeling: Case Studies in Hydrogenation Reactions
by Philippe M. Heynderickx and Dmitry Yu. Murzin
Reactions 2026, 7(3), 41; https://doi.org/10.3390/reactions7030041 - 9 Jul 2026
Viewed by 381
Abstract
Catalyst materials are typically synthesized with distinct composition, and they are evaluated for their specific reaction in terms of conversion and selectivity. In this respect, it can be anticipated that an intermediate composition often leads to the best catalyst. In order to establish [...] Read more.
Catalyst materials are typically synthesized with distinct composition, and they are evaluated for their specific reaction in terms of conversion and selectivity. In this respect, it can be anticipated that an intermediate composition often leads to the best catalyst. In order to establish this specific composition, this work presents the practical use of kinetic modeling when typical conversion and selectivity versus reaction time experimental data are provided. Specific examples from catalytic hydrogenation reactions starting from citral, cinnamaldehyde, and dicyclopentadiene are used. In the first two cases, the effect of catalyst composition and the influence of prereduction treatment are linked to kinetic hydrogenation parameters, from which it was clear that, e.g., the prereduction speeds up both desired and unwanted reaction paths. For the latter example, it is shown that extracted kinetic data, together with physical characterizations, such as XPS, and chemical characterization such as H2-TPR, can serve as a basis for optimization of catalyst design leading to possible superior catalytic activity or selectivity. Full article
(This article belongs to the Special Issue Feature Papers in Reactions in 2026)
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24 pages, 9377 KB  
Article
Support Effects in Hydrogenation Catalysis Using Low-Loading Pd and Rh Catalysts
by Stefano Paganelli, Oreste Piccolo, Ludovico Scarpa and Alessandro Di Michele
Reactions 2026, 7(3), 39; https://doi.org/10.3390/reactions7030039 - 30 Jun 2026
Viewed by 343
Abstract
A sustainable and scalable one-pot impregnation protocol, avoiding high-temperature calcination/activation, was employed to prepare Pd/Al2O3 (0.24 wt%), Pd/TiO2 (0.18 wt%), Pd/ZrO2 (0.21 wt%), Pd/SiO2 (0.37 wt%), Rh/Al2O3 (0.18 wt%), and Rh/TiO2 (0.15 wt%). [...] Read more.
A sustainable and scalable one-pot impregnation protocol, avoiding high-temperature calcination/activation, was employed to prepare Pd/Al2O3 (0.24 wt%), Pd/TiO2 (0.18 wt%), Pd/ZrO2 (0.21 wt%), Pd/SiO2 (0.37 wt%), Rh/Al2O3 (0.18 wt%), and Rh/TiO2 (0.15 wt%). Support effects on activity, selectivity, and recyclability of these low-metal content heterogeneous catalysts were investigated, using (E)-cinnamaldehyde and levulinic acid as probe molecules. In cinnamaldehyde hydrogenation, Pd catalysts were highly effective for chemoselective C=C reduction to 3-phenylpropanal under mild conditions, with Pd/TiO2 displaying the highest activity and robust performance over several recycles. However, the Lewis acidity of TiO2 promoted a solvent-involving side reaction in 2-propanol, with hemiacetal and ether formation, highlighting that apparent selectivity is strongly shaped by support acidity and product residence time. Rh/Al2O3 exhibited lower activity than Pd analogues but near-quantitative selectivity to the saturated aldehyde, whereas Rh/TiO2 again favored hemiacetal formation. In levulinic acid hydrogenation, Pd catalysts were essentially inactive toward ketone hydrogenation even at elevated temperature and H2 pressure, while Rh catalysts achieved high productivity with exclusive formation of γ-valerolactone, Rh/Al2O3 being the most active at comparatively mild pressures. Full article
(This article belongs to the Special Issue Feature Papers in Reactions in 2026)
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11 pages, 2373 KB  
Article
Mechanochemical Synthesis of Silver Molybdate: Influence of Precursors and Milling Conditions
by Filip Brleković, Nikolina Miočić, Katarina Mužina and Stanislav Kurajica
Reactions 2026, 7(2), 33; https://doi.org/10.3390/reactions7020033 - 29 May 2026
Viewed by 516
Abstract
This study investigates the mechanochemical synthesis of silver molybdate (Ag2MoO4). Three silver precursors (AgCl, AgNO3, Ag2SO4) in combination with sodium molybdate dihydrate as the molybdenum precursor were used. Three corresponding sodium salts, which [...] Read more.
This study investigates the mechanochemical synthesis of silver molybdate (Ag2MoO4). Three silver precursors (AgCl, AgNO3, Ag2SO4) in combination with sodium molybdate dihydrate as the molybdenum precursor were used. Three corresponding sodium salts, which are also formed as byproducts, were employed as process control agents (PCAs) to investigate the possibility of obtaining fine-grained silver molybdate. Milling was performed in a planetary mill at 600 and 100 rpm, and for 2 h, 15 min, and 5 min. X-ray diffraction analysis (XRD) revealed that AgCl is completely unreactive in this type of reaction, whereas AgNO3 and Ag2SO4 form crystalline Ag2MoO4. Additional sample characterization included Fourier transform infrared spectroscopy (FTIR), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and simultaneous differential thermal and thermogravimetric analysis (DTA-TGA). The results indicate that the silver molybdate formation reaction is favorable and rapid. Even under the mildest conditions, including the presence of PCA, micron-sized silver molybdate particles were obtained. A greater rotation rate and longer milling time resulted in a decrease in particle size, but also an increase in sodium content. However, unlike the few existing reports on the mechanochemical synthesis of Ag2MoO4, which, despite harsh milling conditions, did not yield a phase-pure product, our approach produced well-crystallized and pure silver molybdate even under the mildest synthesis conditions. Full article
(This article belongs to the Special Issue Feature Papers in Reactions in 2026)
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Review

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40 pages, 9915 KB  
Review
Catalytic Oxidation Reactions for Environmental Applications: Review Article
by Sabrina Antonela Leonardi, María Laura Godoy, Eduardo Ernesto Miró and Viviana Guadalupe Milt
Reactions 2026, 7(3), 44; https://doi.org/10.3390/reactions7030044 - 15 Jul 2026
Viewed by 316
Abstract
Catalytic oxidation is one of the most effective technologies for controlling atmospheric pollutants like carbon monoxide (CO), volatile organic compounds (VOCs), and diesel soot. Catalyst performance is governed by the interplay between reaction mechanisms, physicochemical properties, and catalyst architecture. This review provides a [...] Read more.
Catalytic oxidation is one of the most effective technologies for controlling atmospheric pollutants like carbon monoxide (CO), volatile organic compounds (VOCs), and diesel soot. Catalyst performance is governed by the interplay between reaction mechanisms, physicochemical properties, and catalyst architecture. This review provides a comprehensive overview of the fundamental oxidation pathways, including Langmuir–Hinshelwood, Eley–Rideal, and Mars–van Krevelen mechanisms, highlighting their relationship with oxygen mobility, oxygen vacancies, redox behavior, and metal–support interactions. The catalytic roles of noble metals and transition metal oxides are comparatively discussed, with emphasis on the contribution of lattice oxygen and defect chemistry to oxidation activity. The review also examines recent advances in structured catalysts designed to improve heat and mass transfer, catalyst accessibility, and practical reactor performance. Particular attention is given to biomorphic fibers, electrospun nanofibers, catalytic ceramic papers, conventional monoliths, and additively manufactured (3D-printed) monolithic structures as emerging platforms for environmental catalysis. Unlike previous reviews focused primarily on catalyst composition or individual oxidation reactions, this review integrates oxidation mechanisms, catalyst chemistry, and emerging structured catalyst architectures to provide a unified perspective on the design of efficient, durable, and scalable catalytic systems for environmental oxidation applications, while identifying key challenges and future research directions. Full article
(This article belongs to the Special Issue Feature Papers in Reactions in 2026)
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40 pages, 22704 KB  
Review
Carbon Nanomaterials for Energy Storage in Chemical Industry
by Maria-Anna Gatou, Dimitra Petropoulou-Traka and Evangelia A. Pavlatou
Reactions 2026, 7(3), 42; https://doi.org/10.3390/reactions7030042 - 15 Jul 2026
Viewed by 266
Abstract
Over the past decade, there has been significant attention to the utilization of carbon nanomaterials (CNMs) and CNM-based materials towards energy storage applications. Research has focused on enhancing the electrochemical performance and cycle stability of these materials through modifications to existing electrode designs. [...] Read more.
Over the past decade, there has been significant attention to the utilization of carbon nanomaterials (CNMs) and CNM-based materials towards energy storage applications. Research has focused on enhancing the electrochemical performance and cycle stability of these materials through modifications to existing electrode designs. Contemporary energy storage systems rely on highly efficient sources that offer enhanced energy, as well as power densities. CNMs such as graphene, carbon nanotubes, and activated and porous carbon have garnered attention due to their unique structural characteristics, increased porosity, and excellent electromechanical properties, along with their large specific surface areas. These features make them ideal candidates for electrode materials in energy storage systems. This chapter examines the role of CNM-based materials in energy storage technologies, identifies current challenges that hinder their widespread commercialization, and discusses potential solutions and future research directions to advance the evolution and widespread use of these technologies to meet increasing energy demands. Full article
(This article belongs to the Special Issue Feature Papers in Reactions in 2026)
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21 pages, 2716 KB  
Review
Photocatalysis of Semiconductor Nano-Particles: Explicit Kinetics and Uniqueness of the Reactions
by Yoshio Nosaka
Reactions 2026, 7(2), 30; https://doi.org/10.3390/reactions7020030 - 6 May 2026
Viewed by 1025
Abstract
In this review, some special characteristics of the reactions in semiconductor photocatalysis are presented. At first, since a pair of the redox reactions take place at the same particle, a particle-based kinetic method was presented and applied for the Langmuir–Hinshelwood kinetics to describe [...] Read more.
In this review, some special characteristics of the reactions in semiconductor photocatalysis are presented. At first, since a pair of the redox reactions take place at the same particle, a particle-based kinetic method was presented and applied for the Langmuir–Hinshelwood kinetics to describe the photocatalytic oxidation as a function of both the reactant concentration and the light intensity. Since the surface electron transfer (ET) reactions are the subject of electrochemistry, the difference in the characteristics from particulate semiconductor photocatalysis was pointed out by showing each electric potential near the solid surface. Different from ET in electrochemistry, the ET frequency is limited by the photon absorption in photocatalysis. In the estimation of the reaction rate, the validity of Marcus theory in photocatalysis was argued. Almost all photocatalytic reactions are irreversible, because, before the charge recombination, the oxidation and/or reduction must take place at the same particle. Then, the kinetics for irreversible reaction was discussed. As an exception, the reversible reduction reaction of methylviologen with a hole scavenger was presented. By changing pH, the energy levels of thermalized electrons in TiO2 particles were estimated, and the difference of the flat band potentials between anatase and rutile was clearly explained. Thus, various uniqueness of photocatalytic reactions in aqueous suspension of semiconductor particles were demonstrated. Full article
(This article belongs to the Special Issue Feature Papers in Reactions in 2026)
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