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Molecules
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Innovative Chemical Pathways for CO2 Conversion
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Innovative Chemical Pathways for CO2 Conversion

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Green Chemistry".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 586

Special Issue Editors

Dr. Guillermo Díaz-Sainz

E-Mail Website
Guest Editor
Department of Chemical and Biomolecular Engineering, University of Cantabria, 39005 Santander, Spain
Interests: CO2 capture and utilization; electromembrane reactors; photo/electroreduction; photo/electrooxidation; electrochemistry
Special Issues, Collections and Topics in MDPI journals
Dr. Juqin Zeng

E-Mail Website
Guest Editor
Department of Applied Science and Technology, Politecnico di Torino, 10129 Turin, Italy
Interests: nanomaterials; electrocatalysts; electrocatalysis; carbon dioxide conversion; oxygen reduction reaction; water splitting
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are pleased to invite you to submit your scientific research to this Special Issue of Molecules, titled “Innovative Chemical Pathways for CO2 Conversion”. It covers a diverse range of cutting-edge research topics related to CO2 conversion, emphasizing recent advancements in the field, their alignment with the Sustainable Development Goals (SDGs), and the ambitious targets established during the recent 29th UN Climate Change Conference (COP29).

The aim of this Special Issue is to compile medium-length review articles or original research papers that highlight significant recent developments and achievements in CO2 conversion. Topics of interest include, but are not limited to, the development and application of novel chemical processes for CO2 conversion; CO2 utilization; CO2 reduction; etc.

We encourage submissions of original research and review articles that contribute to this important and rapidly evolving field.

Dr. Guillermo Díaz-Sainz
Dr. Juqin Zeng
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. Molecules is an international peer-reviewed open access semimonthly 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

  • CO2 conversion
  • chemical reactions
  • CO2 utilization
  • CO2 reduction
  • green chemistry
  • sustainable chemistry
  • CO2 recycling
  • carbon neutrality
  • renewable energy
  • carbon footprint reduction
  • environmental impact
  • carbon-based fuels
  • sustainable processes
  • climate change mitigation
  • CO2 emissions
  • energy transition

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Published Papers (2 papers)

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Research

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17 pages, 3155 KiB  
Article
Tailoring Catalysts for CO2 Hydrogenation: Synthesis and Characterization of NH2–MIL–125 Frameworks
by Leidy Figueroa-Quintero, Tomás Cordero-Lanzac, Enrique V. Ramos-Fernandez, Unni Olsbye and Javier Narciso
Molecules 2025, 30(7), 1458; https://doi.org/10.3390/molecules30071458 - 25 Mar 2025
Viewed by 414
Abstract
Copper nanoparticles have been integrated onto the framework of modified NH2–MIL–125(Ti), a metal–organic framework (MOF), and evaluated as catalysts for converting CO2 into valuable products. The modified MOF was achieved through a post-synthetic modification process involving the partial replacement of [...] Read more.
Copper nanoparticles have been integrated onto the framework of modified NH2–MIL–125(Ti), a metal–organic framework (MOF), and evaluated as catalysts for converting CO2 into valuable products. The modified MOF was achieved through a post-synthetic modification process involving the partial replacement of titanium with zirconium or cerium within the MOF’s structure. The objective behind this alteration is to create a synergistic effect between the MOF, serving as a support matrix, and the embedded copper nanoparticles, thereby enhancing the performance of the catalyst. The obtained catalysts were characterized and evaluated in the hydrogenation of CO2 to methanol under different experimental conditions, reaching CO2 conversions of up to 5%, with a selectivity towards methanol that reached values of up to 60%. According to the obtained results, the catalyst composed of Ti, Zr and Cu stood out for having the highest CO2 conversion and selectivity towards methanol, in addition to practically inhibiting the production of methane. These results demonstrate that the interaction of the framework with the Cu nanoparticles, and thus its catalytic properties, can be changed by modifying the properties of the MOF. Full article
(This article belongs to the Special Issue Innovative Chemical Pathways for CO2 Conversion)
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Review

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27 pages, 4612 KiB  
Review
Recent Progress in Heteroatom-Containing Metalloporphyrin-Based Catalysts for CO2 Reduction
by Zhuo Li, Qianqian Wei, Zhixin Ren and Jing Xie
Molecules 2025, 30(11), 2287; https://doi.org/10.3390/molecules30112287 - 23 May 2025
Abstract
Metalloporphyrins, owing to their structural resemblance to natural enzyme active sites and highly tunable coordination environments, have emerged as promising catalysts for converting CO2 into value-added chemicals and fuels. Considerable efforts have been made to modify metalloporphyrins to improve their catalytic capability [...] Read more.
Metalloporphyrins, owing to their structural resemblance to natural enzyme active sites and highly tunable coordination environments, have emerged as promising catalysts for converting CO2 into value-added chemicals and fuels. Considerable efforts have been made to modify metalloporphyrins to improve their catalytic capability for CO2 reduction. One approach involves modifying the metal coordination environment (known as the first coordination sphere) to generate heteroatom-containing metalloporphyrins, particularly N-confused and O/S-substituted variants. While heteroatom-containing metalloporphyrins were first synthesized in 1989, their use in CO2 reduction catalysis was not reported until after 2020. Herein, we review the recent progress in the design, catalytic performance, and mechanistic studies of N-confused and O/S-substituted metalloporphyrins towards CO2 reduction. This review encompasses both experimental and theoretical computational work, as well as the use of porphyrins as catalysts in photocatalysis and electrocatalysis. Finally, based on the current research advances, we present critical recommendations and future research directions, with a focus on theoretical studies, in the hope of facilitating the rational design of novel catalysts for sustainable energy conversion and environmental remediation. Full article
(This article belongs to the Special Issue Innovative Chemical Pathways for CO2 Conversion)
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