g-C_(3)N_(4)nanosheets coupled with CoSe_(2)as co-catalyst for efficient photooxidation of xylose to xylonic acid  

作　　者：Qi Hao Yijun Liu Ren Zou Ge Shi Shilian Yang Linxin Zhong Wu Yang Xiao Chi Yunpeng Liu Shimelis Admassie Xinwen Peng 

机构地区：[1]State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou,510641,Guangdong,China [2]Hainan Key Laboratory of Storage&Processing of Fruits and Vegetables,Agricultural Products Processing Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang,Guangdong,524001,China [3]Department of Chemistry and Centre for Advanced 2D Materials(CA2DM)National University of Singapore 3 Science Drive 3,Singapore,117543,Singapore [4]School of Materials Science and Hydrogen Energy,Foshan University,Foshan,528231,Guangdong,China [5]Department of Chemistry,Addis Ababa University,PO BOX 1176,Addis Ababa,Ethiopia

出　　处：《Green Energy & Environment》2025年第1期231-238,共8页绿色能源与环境（英文版）

基　　金：financial support by National Key Research and Development Project(Grant No.2023YFE0109600);Guangzhou Key Research and Development Program(Grant No.2023B03J1330);National Program for Support of Topnotch Young Professionals(Grant No.x2qsA4210090);Guangzhou Basic and Applied Basic Research Foundation(Grant No.2024A04J3413);National Natural Science Foundation of China(Grant No.32201499);State Key Laboratory of Pulp and Paper Engineering(Grant Nos.2023PY01 and 202215);Guangdong Basic and Applied Basic Research Foundation(Grant Nos.2023A1515012519 and 2023B1515040013);China Postdoctoral Science Foundation(Grant No.2023M732021).

摘　　要：Photocatalysis has emerged as an effective approach to sustainably convert biomass into value-added products.CoSe_(2)is a promising nonprecious,efficient cocatalyst for photooxidation,which can facilitate the separation of photogenerated electron–holes,increase the reaction rates,and enhance photocatalytic efficiency.In this work,we synthesized a stable and efficient photocatalysis system of CoSe_(2)/g-C_(3)N_(4)through attaching CoSe_(2)on g-C_(3)N_(4)sheets,with a yield of 50.12%for the selective photooxidation of xylose to xylonic acid.Under light illumination,the photogenerated electrons were prone to migrating from g-C_(3)N_(4)to CoSe_(2)due to the higher work function of CoSe_(2),resulting in the accelerated separation of photogenerated electron–holes and the promoted photooxidation.Herein,this study reveals the unique function of CoSe_(2),which can significantly promote oxygen adsorption,work as an electron sink and accelerate the generation of ·O_(2)^(-),thereby improving the selectivity toward xylonic acid over other by-products.This work provides useful insights into the design of selective photocatalysts by engineering g-C_(3)N_(4)for biomass high-value utilization.

关 键 词：Biomass photooxidation Hemicelluloses XYLOSE g-C_(3)N_(4) Xylonic acid 

分 类 号：TK6[动力工程及工程热物理—生物能] O643.36[理学—物理化学]