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Issue 19, 2020
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Functional B@mCN-assisted photocatalytic oxidation of biomass-derived pentoses and hexoses to lactic acid

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Abstract

The integration of biorefining and photocatalysis is the most promising approach to enable green and efficient synthesis of biomass-based high value chemicals. Herein, a novel and functional carbon nitride photocatalyst was developed to achieve the production of lactic acid under visible-light irradiation. The doping of boron (B) and oxygen (O) atoms in the catalyst (B@mCN-Y) not only reduced the bandgaps, but also improved the separation efficiency of surface photoinduced charge carriers, resulting in an enhanced photocatalytic activity of B@mCN-Y. Furthermore, the catalyst exhibited excellent activity for different biomass-based monosaccharides, and the highest yield was 92.7%. Various oxidative active species of h+, 1O2, ˙O2 and ˙OH all benefit the synthesis of lactic acid, while the effect of h+ is superior to that of the others. The catalyst is also highly stable and recyclable, and the system for producing lactic acid has potential for amplification. The yield and conversion of a one-thousand-fold scale-up experiment retained 68.6% and 89.0% of the values of the one time experiment. This work promotes the development of photocatalytic biomass refining.

Graphical abstract: Functional B@mCN-assisted photocatalytic oxidation of biomass-derived pentoses and hexoses to lactic acid

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Supplementary files

Article information


Submitted
04 Jun 2020
Accepted
31 Jul 2020
First published
31 Jul 2020

Green Chem., 2020,22, 6384-6392
Article type
Paper

Functional B@mCN-assisted photocatalytic oxidation of biomass-derived pentoses and hexoses to lactic acid

J. Ma, Y. Li, D. Jin, Z. Ali, G. Jiao, J. Zhang, S. Wang and R. Sun, Green Chem., 2020, 22, 6384
DOI: 10.1039/D0GC01896A

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