3D laminated graphitic carbon nitride decorating with 2D/2D Bi2WO6/rGO nanosheets for selective photoreduction of CO2 to CO

I. Ting Chen, Meng Wei Zheng, Ying Chih Pu, Shou Heng Liu

研究成果: Article同行評審

摘要

A novel Bi2WO6/rGO/3D-GCN composite with 2D/2D/3D heterojunction is synthesized by a simple microwave-assisted method and used as a visible-light-responsive photocatalyst in the CO2 reduction. The chemical properties and morphology of prepared photocatalysts are identified by a variety of analytic tools and spectroscopies. As a result, the heterojuncted Bi2WO6/3D-GCN exhibits superior CO2 reduction performance as compared to the pristine 3D-GCN, which may be caused by the intimate contact between Bi2WO6 and 3D-GCN. The harvest of visible-light absorption, reduced charge transfer resistance and suppressed recombination of electron-hole pairs are accountable for surpassing performance of Bi2WO6/3D-GCN. Upon further incorporation of rGO into Bi2WO6/3D-GCN heterojunction, the photocatalytic production of CO can be notably boosted by ca. 7.9-fold higher than 3D-GCN, suggesting the key contribution of rGO in facilitating the interfacial charge transfer kinetics and increasing CO2 uptake. This work exemplifies a time and energy-saving method to prepare the unique 3D GCN with laminated hexagonal structure which can serve as a shuttle for Bi2WO6 heterojunction and rGO incorporation. This Bi2WO6/rGO/3D-GCN photocatalyst could offer the potential applications in the natural solar conversions of CO2.

原文English
期刊International Journal of Energy Research
DOIs
出版狀態Accepted/In press - 2022

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 核能與工程
  • 燃料技術
  • 能源工程與電力技術

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