Carbonaceous nanomaterial-TiO2 heterojunctions for visible-light-driven photocatalytic degradation of aqueous organic pollutants
| Autor: | Lijuan Zhang, Lantian Chang, Kelly Hawboldt, Jie Lu, Anna Dwyer, Yan Zhang |
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| Rok vydání: | 2022 |
| Předmět: |
Pollutant
Aqueous solution Chemistry Process Chemistry and Technology Nanotechnology Heterojunction 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology medicine.disease_cause 01 natural sciences 7. Clean energy Catalysis 0104 chemical sciences Nanomaterials 13. Climate action Photocatalysis medicine 0210 nano-technology Absorption (electromagnetic radiation) Ultraviolet Visible spectrum |
| Zdroj: | Applied Catalysis A: General. 630:118460 |
| ISSN: | 0926-860X |
| DOI: | 10.1016/j.apcata.2021.118460 |
| Popis: | Over the past few decades, heterogeneous photocatalysis has become a “green” alternative to traditional methods to degrade various environmental pollutants. TiO2, a low-cost and ultraviolet-light-active photocatalyst has been intensively used to decompose organic pollutants in water. The combination of TiO2 with non-toxic carbonaceous nanomaterials (CNMs) has been proved to extend TiO2 light absorption from ultraviolet (UV) to visible or even near infrared light region. Over the last decade, numerous studies on the development of CNM/TiO2 heterojunctions as efficient visible-light-responsive photocatalysts have been reported. However, a comprehensive review with respect to their synthesis, structural characteristics, photocatalytic activity enhancement is absent. In this review, the construction and characteristics (e.g. band structures, optical absorption, and interfacial charge transfer) of each class of CNM/TiO2 heterojunctions will be comprehensively reviewed. In addition, the application of CNM/TiO2 heterojunctions for photocatalytic degradation of persistent organic pollutants will be presented in detail. This review ends with a summary and future perspectives in exploring high performance CNM/TiO2 photocatalysts. |
| Databáze: | OpenAIRE |
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