Unveiling the potential of step-scheme and Type II photocatalysts in dinitrogen reduction to ammonia

Alli, Yakubu Adekunle and Matebese, Funeka and Chkirida, Soulaima and Magida, Nokuthula E. and Ogunlaja, Adeniyi S. and Hanson, Enobong and Nwakile, Chukwuebuka and Bayazıt, Mustafa Kemal (2024) Unveiling the potential of step-scheme and Type II photocatalysts in dinitrogen reduction to ammonia. Science of the Total Environment, 957 . ISSN 0048-9697 (Print) 1879-1026 (Online)

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Abstract

Innovative photocatalytic systems designed to enhance efficiency of nitrogen fixation processes, specifically focusing on sustainable ammonia (NH3) production strategies via dinitrogen (N2) reduction into ammonia (NH3). This process is critical for sustainable agriculture and energy production. To improve photocatalyst activity, catalyst stability and reusability, reduction efficiency due to electron/hole recombination, and light-absorption efficiency has drawn extensive attention. Herein, a broad range of research progress and comprehensive overview of step-scheme/type-II heterojunctions focusing on dinitrogen (N2) reduction are reviewed with focus on general synthesis, characterization by their unique charge separation mechanisms that improve light absorption and electron-hole pair utilization. The review highlights recent advancements in material design, which have shown promising results in enhancing photocatalytic activity under visible light irradiation. A significant portion of the review delves into the underlying mechanisms which these heterojunctions operate. Despite the promising literature results, several challenges facing this field, such as scalability, stability of photocatalysts, and environmental impact under operational conditions were also discussed. In summary, this review provides valuable insights into the potential of step-scheme/type-II photocatalysts for dinitrogen reduction to ammonia. The need for interdisciplinary approaches to overcome existing challenges such as incorporation of piezoelectric biomaterials and unlocking the full potential of these materials in addressing global nitrogen demands sustainably are highlighted, outlining future directions for further research and innovations.
Item Type: Article
Uncontrolled Keywords: Ammonia production; Catalytic efficiency; Charge transfer mechanism; Dinitrogen reduction; Heterojunctions; Photocatalysis; Solar driven catalysis; Solar-to-chemical conversion; Step-scheme photocatalysts; Type-II photocatalyst
Divisions: Faculty of Engineering and Natural Sciences
Depositing User: Mustafa Kemal Bayazıt
Date Deposited: 06 Feb 2025 15:15
Last Modified: 06 Feb 2025 15:15
URI: https://research.sabanciuniv.edu/id/eprint/50824

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