Visible-Light-Promoted Photocatalytic Applications of Carbon Dots: A Review
Deepika Saini, Anjali Kumari Garg, Chumki Dalal, Satyesh Raj Anand, Sumit Kumar Sonkar, Amit Kumar Sonker, Gunnar Westman
Abstract
The same carbon-based nanomaterials have shown their potential photocatalytic applications toward environmental and energy-related problems based on their excellent light absorption abilities. Herein, we summarized the findings associated with visible light and sunlight-induced photocatalysis, specifically using carbon dots (CD), doped-CD, and their nanocomposite as an advanced photocatalytic material. Doped-CD and CD-based composite have improved light absorption abilities compared to bare CD, which is the essential parameter for photocatalysis applications. Various parameters, such as fabrication methodologies, efficiency, and stability, have also been discussed. The possible mechanistic insights involving the photocatalysis method applied in multiple chemical reactions have been discussed in detail, including degradation of organic dye, reduction of higher toxic oxidation states of metal ions, CO2 conversion, water splitting, organic transformation reaction, and NOx removal, etc.