期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 47, 期 8, 页码 5142-5191出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2021.11.133
关键词
Graphitic carbon nitride; Heterojunctions; Composite materials; Photocatalyst; Energy conversion; Environmental remediation
资金
- King Khalid University [RCAMS/KKU/006/21]
- Ministry of Higher Education, Malaysia (MOHE) [PRGS/1/2021/STG04/UITM/02/1]
- Universiti Teknologi MARA (UiTM)
This article introduces graphitic carbon nitride (g-C3N4) as a material with potential to address energy and ecological issues, and proposes the use of heterojunction formation to improve its photocatalytic performance. It reviews recent g-C3N4 nanocomposites and their applications in solar energy adaptation and pollution control.
Due to the future uses of solar energy in different areas, such as the oxidation of fossil fuel-based contaminants, the reduction of carbon dioxide, heterogeneous photocatalysis, and the generation of inexhaustible and renewable hydrogen gas exploits semiconductors. As a metal free photocatalyst, graphitic carbon nitride (g-C3N4) is classified to solve these energy hazards and ecological difficulties owing to its excellent electronic structure with band energy of about 2.7 eV, robust photochemical stability, and better light-harvesting efficiency. However, its photocatalytic performance is still insufficient due to a minor surface area and poor conductivity. Therefore, heterojunction formation by combining it with a giant band gap material is a potential approach to reestablish polarization in its distinctive band structure, increase its light absorption capacity and enhance its surface area. In this regard, various synthesis techniques have been applied so far to integrate g-C3N4 and other materials for boosting its photocatalytic activity. So far, metal oxide, sulfides, and ferrites are three crucial groups of materials that have been identified and defined to be used to synthesize g-C3N4 dependent nanocomposites. As a result, in this review, we have compiled a list of the most recent g-C3N4 nanocomposites with their applications in solar energy adaptation and pollution control. This study concludes an overview about the next steps to study the nanomaterials based g-C3N4 composites and a range of additional insights to solve the present problems. (C) 2021 Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.
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