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Catalysts
Special Issues
Advances in Photocatalytic and Photothermal Catalytic CO2 Reduction
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Advances in Photocatalytic and Photothermal Catalytic CO2 Reduction

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Photocatalysis".

Deadline for manuscript submissions: 6 June 2024 | Viewed by 4587

Special Issue Editor

Dr. Fernando Fresno

E-Mail Website
Guest Editor
Instituto de Catálisis y Petroleoquímica (ICP), CSIC, Marie Curie, 2, Cantoblanco, 28049 Madrid, Spain
Interests: photocatalysis; photothermal catalysis; inorganic semiconductors; photoreforming; CO2 conversion
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Controlling climate change and developing an efficient and sustainable global energy system are two of the main current scientific challenges. One of the potential strategies that can be used to achieve this goal is the use of CO2 mimicking nature’s carbon-neutral cycle but on a manageable time scale. The main challenge for CO2 valorisation is related to the high stability of this molecule, requiring a large amount of energy to be activated. Therefore, a key aspect for the proliferation of CO2 transformation technologies is their integration with sustainable energy sources. One of the most promising approaches for this strategy is photocatalytic reduction, one of the so-called artificial photosynthetic processes aiming at producing fuels and chemicals from carbon dioxide and water using sunlight as the only energy input. In addition, photothermal catalysis, working at the interface between photocatalysis and the more classical thermal catalysis, has become a rapidly expanding research field, especially for the conversion of CO2 into useful molecules. This Special Issue is devoted to providing an insightful view on the recent advancements in both approaches to achieve light-driven CO2 conversion—photocatalytic and photothermal catalytic—with special attention given to the study of the catalysts and the properties governing their activity and selectivity towards different products.

Dr. Fernando Fresno
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. 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

  • CO2 conversion
  • photocatalysis
  • photothermal catalysis
  • artificial photosynthesis
  • solar fuels
  • solar chemicals

Published Papers (2 papers)

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16 pages, 5317 KiB  
Article
Carbon Nitride-Based Catalysts for High Pressure CO2 Photoreduction
by Francesco Conte, Elisa I. García-López, Giuseppe Marcì, Claudia L. M. Bianchi, Gianguido Ramis and Ilenia Rossetti
Catalysts 2022, 12(12), 1628; https://doi.org/10.3390/catal12121628 - 12 Dec 2022
Cited by 1 | Viewed by 1469
Abstract
In the current research, the productivity of CO2 photoreduction has been boosted by performing the reaction in an innovative photocatalytic reactor, which allows for operation up to 20 bar. A set of photocatalysts were used, including three types of pristine TiO2 [...] Read more.
In the current research, the productivity of CO2 photoreduction has been boosted by performing the reaction in an innovative photocatalytic reactor, which allows for operation up to 20 bar. A set of photocatalysts were used, including three types of pristine TiO2, i.e., one commercially prepared (Evonik P25), one home-prepared by flame spray pyrolysis (FSP), and one obtained by the hydrolysis of TiCl4 (TiO2exCl), a bare thermo-exfoliated carbon nitride (C3N4-TE), and binary materials composed of TiO2 and C3N4-TE. The photoreduction was carried out in water at pH 14 and in the presence of Na2SO3 as a hole scavenger. Hydrogen and very small amounts of CO were detected in the head space of the photoreactor, while in the liquid phase, the main product was formic acid, along with traces of methanol and formaldehyde. The composites P25/TE and TiO2exCl/TE were found to have a higher productivity if compared to its single constituents used alone, probably due to the heterojunction formed by coupling the two materials. Moreover, the high pressure applied in the photoreactor proved to be very effective in boosting the yield of the organic products. Full article
(This article belongs to the Special Issue Advances in Photocatalytic and Photothermal Catalytic CO2 Reduction)
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17 pages, 6267 KiB  
Perspective
Porphyrins Acting as Photosensitizers in the Photocatalytic CO2 Reduction Reaction
by Yusuke Kuramochi and Akiharu Satake
Catalysts 2023, 13(2), 282; https://doi.org/10.3390/catal13020282 - 27 Jan 2023
Cited by 8 | Viewed by 2532
Abstract
The success of the photocatalytic CO2 reduction using sunlight depends on how visible light is captured and utilized. Zn porphyrins, which are synthetic analogues of chlorophyll and bacteriochlorophyll, have very intense absorption bands in the visible region and are high potential candidates [...] Read more.
The success of the photocatalytic CO2 reduction using sunlight depends on how visible light is captured and utilized. Zn porphyrins, which are synthetic analogues of chlorophyll and bacteriochlorophyll, have very intense absorption bands in the visible region and are high potential candidates as photosensitizers for CO2 reduction. However, the use of zinc porphyrins had been limited due to their poor stability under the photocatalytic reduction conditions. We found that the durability of porphyrin during the photocatalytic CO2 reduction reaction is dramatically improved by combining a metal complex catalyst with the porphyrin so that two or more electrons are not accumulated on the porphyrin. In this perspective, we describe the molecular design of systems that combine Re complexes and porphyrins in detail and their unique reaction mechanisms in the photocatalytic CO2 reduction. Full article
(This article belongs to the Special Issue Advances in Photocatalytic and Photothermal Catalytic CO2 Reduction)
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