期刊
GREEN CHEMISTRY
卷 23, 期 11, 页码 4150-4160出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1gc00920f
关键词
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资金
- Foundation of National Key Research and Development Program of China [2019YFB1503803]
- NSFC-CONICFT Joint Project [51961125207]
- Liaoning Province Xingliao Talent Plan Outstanding Talent Project [XLYC1901004]
- Innovation Support Program for High-level Talents of Dalian (Top and Leading Talents) [201913]
- Dalian City Outstanding Talent Project [2019RD13]
- National Natural Science Foundation of China [22008018]
- Natural Science Foundation of Liaoning Province [2020-MS-272]
- China Postdoctoral Science Foundation [2020M670716]
- Start-up Fund for Doctoral Research of Dalian Polytechnic University [2020-07]
- Foundation of State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences [KF201914]
- Foundation of Key Laboratory of State Forestry and Grassland Administration for Plant Fiber Functional Materials [2020KFJJ06]
In this study, phosphorus-doped carbon nitride with grafted sulfonic acid groups was successfully prepared and applied in the photocatalytic conversion of xylose to xylonic acid. The introduction of phosphorus doping and sulfonic acid groups significantly enhanced the photocatalytic activity, leading to efficient synthesis of xylonic acid.
The photocatalytic selective oxidation of biomass-derived feedstocks to high-value organic acids is promising and challenging, especially for the production of xylonic acid. Herein, novel phosphorus-doped carbon nitride with grafted sulfonic acid groups (P@CN-SO3H) was prepared and successfully used in the photocatalytic-reforming of xylose to xylonic acid. The successful doping of phosphorus and grafting of sulfonic acid groups significantly extend the visible light adsorption range and decrease the photoluminescence intensity of the resulting carbon nitride, thereby enhancing its photocatalytic activity. P@CN-SO3H can efficiently catalyze the synthesis of xylonic acid (88.1%) from xylose with excellent stability and reusability. Electron spin-resonance results indicate that the contents of h(+), OH, center dot O-2(-), and O-1(2) increase with the irradiation time, facilitating the synthesis of xylonic acid, in which O-2(-) plays a primary role. The economic benefits and results of the present xylonic acid production system indicate its huge potential for industrial applications.
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