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Unique hole-accepting carbon-dots promoting selective carbon dioxide reduction nearly 100% to methanol by pure water

Chemistry

Unique hole-accepting carbon-dots promoting selective carbon dioxide reduction nearly 100% to methanol by pure water

Y. Wang, X. Liu, et al.

Discover how microwave-synthesized carbon dots enhance the sustainability of liquid fuel production from CO₂ and water, showcasing nearly 100% selectivity to methanol. This impressive research by Yiou Wang, Xu Liu, and their colleagues at University College London and other esteemed institutions is paving the way for greener energy solutions.

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Playback language: English
Abstract
Solar-driven CO₂ reduction by abundant water to alcohols can supply sustainable liquid fuels and alleviate global warming. This study demonstrates that microwave-synthesized carbon-dots (mCDs) possess unique hole-accepting properties, prolonging the electron lifetime of carbon nitride (CN) and favoring six-electron product formation. mCD-decorated CN stably produces stoichiometric oxygen and methanol from water and CO₂ with nearly 100% selectivity to methanol and an internal quantum efficiency of 2.1% in the visible region. mCD rapidly extracts holes from CN, preventing methanol surface adsorption and enhancing selective CO₂ reduction to alcohols.
Publisher
NATURE COMMUNICATIONS
Published On
May 21, 2020
Authors
Yiou Wang, Xu Liu, Xiaoyu Han, Robert Godin, Jialu Chen, Wuzong Zhou, Chaoran Jiang, Jamie F. Thompson, K. Bayazit Mustafa, Stephen A. Shevlin, James R. Durrant, Zhengxiao Guo, Junwang Tang
Tags
CO₂ reduction
sustainable fuels
microwave-synthesized carbon dots
methanol production
carbon nitride
quantum efficiency
selective reduction

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