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Enhancing photocatalytic CO2 reduction with TiO2-based materials: Strategies, mechanisms, challenges, and perspectives

Environmental science and ecotechnology, 2024-07, Vol.20, p.100368-100368, Article 100368 [Peer Reviewed Journal]

2023 The Authors 2023 ;ISSN: 2666-4984 ;ISSN: 2096-9643 ;EISSN: 2666-4984 ;DOI: 10.1016/j.ese.2023.100368

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  • Title:
    Enhancing photocatalytic CO2 reduction with TiO2-based materials: Strategies, mechanisms, challenges, and perspectives
  • Author: Yuan, Zhimin ; Zhu, Xianglin ; Gao, Xianqiang ; An, Changhua ; Wang, Zheng ; Zuo, Cheng ; Dionysiou, Dionysios D. ; He, Hong ; Jiang, Zaiyong
  • Subjects: Review
  • Is Part Of: Environmental science and ecotechnology, 2024-07, Vol.20, p.100368-100368, Article 100368
  • Description: The concentration of atmospheric CO2 has exceeded 400 ppm, surpassing its natural variability and raising concerns about uncontrollable shifts in the carbon cycle, leading to significant climate and environmental impacts. A promising method to balance carbon levels and mitigate atmospheric CO2 rise is through photocatalytic CO2 reduction. Titanium dioxide (TiO2), renowned for its affordability, stability, availability, and eco-friendliness, stands out as an exemplary catalyst in photocatalytic CO2 reduction. Various strategies have been proposed to modify TiO2 for photocatalytic CO2 reduction and improve catalytic activity and product selectivity. However, few studies have systematically summarized these strategies and analyzed their advantages, disadvantages, and current progress. Here, we comprehensively review recent advancements in TiO2 engineering, focusing on crystal engineering, interface design, and reactive site construction to enhance photocatalytic efficiency and product selectivity. We discuss how modifications in TiO2's optical characteristics, carrier migration, and active site design have led to varied and selective CO2 reduction products. These enhancements are thoroughly analyzed through experimental data and theoretical calculations. Additionally, we identify current challenges and suggest future research directions, emphasizing the role of TiO2-based materials in understanding photocatalytic CO2 reduction mechanisms and in designing effective catalysts. This review is expected to contribute to the global pursuit of carbon neutrality by providing foundational insights into the mechanisms of photocatalytic CO2 reduction with TiO2-based materials and guiding the development of efficient photocatalysts.
  • Publisher: Elsevier
  • Language: English
  • Identifier: ISSN: 2666-4984
    ISSN: 2096-9643
    EISSN: 2666-4984
    DOI: 10.1016/j.ese.2023.100368
  • Source: PubMed Central
    DOAJ Directory of Open Access Journals
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