Review on photocatalytic conversion of carbon dioxide to value-added compounds and renewable fuels by graphitic carbon nitride-based photocatalysts

• Published in: Catalysis reviews. Science and engineering Vol. 61; no. 4; pp. 595 - 628
• Main Authors: Akhundi, Anise, Habibi-Yangjeh, Aziz, Abitorabi, Masoud, Rahim Pouran, Shima
• Format: Journal Article
• Language: English
• Published: New York Taylor & Francis 02.10.2019; Taylor & Francis Ltd
• Subjects: Carbon dioxide; Carbon nitride; Catalytic activity; Conversion; Copolymerization; environmental pollution; Fuels; g-C; Heterojunctions; Nanocomposites; Noble metals; Photocatalysis; Photocatalysts; Production methods; reduction; Selectivity; State-of-the-art reviews
• ISSN: 0161-4940; 1520-5703
• DOI: 10.1080/01614940.2019.1654224

Photocatalytic reduction of CO 2 is known as one of the most promising methods to produce valuable fuels and value-added compounds. To overcome selectivity and efficiency downsides, various photocatalysts have been designed and developed. This review discusses the state-of-the-art in photo-conversion of CO 2 over graphitic carbon nitride (g-C 3 N 4 )-based composites. The modification strategies to improve photocatalytic activity of g-C 3 N 4 were classified into different categories and discussed as structural modifications, elemental doping, copolymerization, fabricating heterojunctions between g-C 3 N 4 and other semiconductors, Z-scheme heterojunctions, noble metal/g-C 3 N 4 photocatalysts, and design of ternary nanocomposites based on g-C 3 N 4 . Finally, perspectives and future research works in this field were also outlined.