Recent Advances in Photocatalytic CO2 Reduction

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

Deadline for manuscript submissions: 31 May 2025 | Viewed by 1085

Special Issue Editors


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Guest Editor
School of Materials Science and Engineering, Institute for Advanced Materials, Jiangsu University, Zhenjiang 212013, China
Interests: photocatalysis; photocatalytic CO2 reduction; environmental catalysis

E-Mail Website
Guest Editor Assistant
College of Chemistry, Baicheng Normal University, Baicheng 137000, China
Interests: photocatalysis; photocatalytic CO2 reduction; membrane catalysis

Special Issue Information

Dear Colleagues,

The photocatalytic reduction of carbon dioxide has made significant progress in recent years as an effective means of reducing carbon dioxide emissions and converting energy. This technology utilizes solar energy to excite photocatalysts, converting carbon dioxide into fuel and valuable chemicals, with both environmental and sustainability benefits. Further research in this area is expected to gradually solve the challenges of low selectivity and low yield in the production of C1/C2+ products generated by photocatalytic reduction of CO2. These fields include, but are not limited to, the following:

  • Design and optimization of photocatalysts;
  • Investigation into the mechanisms of photocatalytic CO2 reduction;
  • Strategies for improving selectivity and yield of reduction products.

In fact, these rapid advances are significantly driving the application and development of photocatalytic technology. A deeper understanding of the structure-activity relationship and mechanism of photocatalysts is crucial for the development of new functional nanomaterials and their related devices.

This Special Issue will present the most recent and significant developments in photocatalytic CO2 reduction. Please join us in this endeavor to promote and disseminate eco-friendly practices in the field of photocatalysis as we work towards a more sustainable and environmentally conscious future. Original papers on the above topics and short reviews are welcome for submission.

If you would like to submit papers for publication in this Special Issue or have any questions, please contact the in-house Editor, Mr. Ives Liu (ives.liu@mdpi.com).

Dr. Xu Tang
Guest Editor

Dr. Bo Hu
Guest Editor Assistant

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Keywords

  • photocatalysts
  • photocatalytic CO2 reduction
  • surface and interface regulation
  • reaction microenvironment regulation
  • conversion of photovoltaic/thermal

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Published Papers (2 papers)

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Research

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16 pages, 5281 KiB  
Article
Photothermal Effect of Carbon-Doped Carbon Nitride Synergized with Localized Surface Plasmon Resonance of Ag Nanoparticles for Efficient CO2 Photoreduction
by Xianghai Song, Sheng Xu, Fulin Yang, Xiang Liu, Mei Wang, Xin Liu, Weiqiang Zhou, Jisheng Zhang, Yangyang Yang and Pengwei Huo
Catalysts 2025, 15(4), 369; https://doi.org/10.3390/catal15040369 - 10 Apr 2025
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Abstract
Converting carbon dioxide (CO2) into high-value fuels through the photothermal effect offers an effective approach to enhancing the carbon cycle and reducing the greenhouse effect. In this study, we developed Ag/C-TCN-x, a carbon nitride-based photocatalyst that integrates both photothermal and localized [...] Read more.
Converting carbon dioxide (CO2) into high-value fuels through the photothermal effect offers an effective approach to enhancing the carbon cycle and reducing the greenhouse effect. In this study, we developed Ag/C-TCN-x, a carbon nitride-based photocatalyst that integrates both photothermal and localized surface plasmon resonance (LSPR) effects. This material was synthesized through a three-step process involving hydrothermal treatment, calcination, and photo-deposition. Real-time infrared thermography monitoring revealed that Ag/C-TCN-2 reached a surface stabilization temperature of approximately 176 °C, which was 1.5 times higher than C-TCN and 2.2 times higher than g-C3N4. Under the same experimental conditions, Ag/C-TCN demonstrated a carbon monoxide (CO) release rate 3.3 times greater than that of pure g-C3N4. The composite sample Ag/C-TCN-2 maintained good photocatalytic activity in five cycling tests. The structural stability of the sample after the cycling tests was confirmed by X-ray diffraction (XRD) test. The unique tubular structure of Ag/C-TCN increased its specific surface area, facilitating enhanced CO2 adsorption. Carbon doping not only triggered the photothermal effect but also accelerated the conversion of carriers. Additionally, the LSPR effect of Ag nanoparticles, combined with carbon doping, optimized charge carrier dynamics and promoted efficient CO2 photoreduction. The CO2 reduction mechanism over Ag/C-TCN was further examined using in situ Fourier Transform Infrared (FT-IR) spectroscopy. This research offers valuable insights into how photothermal and LSPR effects can be harnessed to enhance the efficiency of CO2 photoreduction. Full article
(This article belongs to the Special Issue Recent Advances in Photocatalytic CO2 Reduction)
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Review

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28 pages, 10138 KiB  
Review
Carbon Nitride and Its Hybrid Photocatalysts for CO2 Reduction C1 Product Selectivity
by Zhi Zhu, Wei Wang, Hongping Li, Jun Zhao and Xu Tang
Catalysts 2025, 15(5), 408; https://doi.org/10.3390/catal15050408 - 22 Apr 2025
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Abstract
The transformation of abundant and cost-effective CO2 molecules into valuable chemical feedstocks or fuels represents an appealing yet challenging research objective. Artificial photosynthesis offers a promising pathway for CO2 reduction reactions (CO2RR) under mild and environmentally friendly conditions. Graphitic [...] Read more.
The transformation of abundant and cost-effective CO2 molecules into valuable chemical feedstocks or fuels represents an appealing yet challenging research objective. Artificial photosynthesis offers a promising pathway for CO2 reduction reactions (CO2RR) under mild and environmentally friendly conditions. Graphitic carbon nitride (g-C3N4) has attracted significant attention for its potential to enhance the efficiency and selectivity of CO2RR through synthesis and modification strategies. This review explores recent advancements in g-C3N4 and its hybrid photocatalysts for selective CO2 conversions. We examine key factors influencing CO2RR product selectivity, including electron count and reaction dynamics, CO2 and reduction intermediates adsorption/desorption, and proton regulation affecting competitive hydrogen evolution. By summarizing various strategies to enhance CO2 photoreduction performance, this work provides a comprehensive analysis of CO2RR selectivity mechanisms for each approach. This review aims to inspire research endeavors towards developing efficient artificial systems for enhanced CO2RR efficiency and product selectivity. Full article
(This article belongs to the Special Issue Recent Advances in Photocatalytic CO2 Reduction)
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