Advanced Functional Materials· 2012Q1
Graphene‐Like Carbon Nitride Nanosheets for Improved Photocatalytic Activities
- 3,533citations
- Q1SCImago
- 2012year
Short summary
Graphene-like carbon nitride (g-C3N4) nanosheets, around 2 nm thick, were synthesized via thermal oxidation etching and exhibited significantly enhanced photocatalytic activity.
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Key points
- Graphene-like g-C3N4 nanosheets (approx. 2 nm thick) were synthesized using thermal oxidation etching.
- Nanosheets show a high specific surface area (306 m²/g) and improved electron transport.
- Quantum confinement effects in nanosheets lead to increased photoexcited charge carrier lifetime.
- Photocatalytic activities, including •OH radical generation and H2 evolution, were significantly improved.
AI-generated from the title and abstract; the full text is not read.
Abstract
Abstract “Graphitic” (g)‐C 3 N 4 with a layered structure has the potential of forming graphene‐like nanosheets with unusual physicochemical properties due to weak van der Waals forces between layers. Herein is shown that g‐C 3 N 4 nanosheets with a thickness of around 2 nm can be easily obtained by a simple top‐down strategy, namely, thermal oxidation etching of bulk g‐C 3 N 4 in air. Compared to the bulk g‐C 3 N 4 , the highly anisotropic 2D‐nanosheets possess a high specific surface area of 306 m 2 g −1 , a larger bandgap (by 0.2 eV), improved electron transport ability along the in‐plane direction, and increased lifetime of photoexcited charge carriers because of the quantum confinement effect. As a consequence, the photocatalytic activities of g‐C 3 N 4 nanosheets have been remarkably improved in terms of •OH radical generation and photocatalytic hydrogen evolution.
The authors' abstract, as published at the source. Advanced Functional Materials, 2012 · DOI ↗
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Field: Renewable Energy, Sustainability and the Environment
Renewable Energy, Sustainability and the EnvironmentEnergy