g-C3N x with a Tunable Band Structure for Efficient Photocatalytic Xylose Oxidation and Hydrogen Evolution

作者：Mu, Zhiyuan; Zou, Ren; Yang, Wu; Ma, Jiliang; Chen, Zehong; Shi, Ge; Liu, Juan; Li, Tingzhen; Liu, Yunpeng; Peng, Xinwen^*

来源：ACS Sustainable Chemistry & Engineering, 2023, 11(28): 10233-10241.

DOI：10.1021/acssuschemeng.2c06032

• bifunctional photocatalyst
• biorefinery
• H-2 production
• tunablebandgaps
• scale-upproduction

Thecombination of photocatalysis with biorefinery and hydrogen(H-2) production is highly desired, yet the systematicalprocesses have not been achieved for the lack of development of aneffective bifunctional photocatalyst to enhance the efficiency ofbiorefinery and H-2 generation. Here, we reported an efficientphotocatalyst to promote xylonic acid formation and H-2 productionby introducing cyano groups on graphitic carbon nitride (g-C3N x ). The obtained g-C3N x could effectively absorb visible light withextended range by the tunable band structure. We also found that electronsand holes were effectively separated on the surface of g-C3N x , enhancing the visible-light photocatalyticresponse and therefore increasing biorefinery and H-2 production.The efficient amplification of xylonic acid synthesis indicated thepossibility of xylonic acid via this photocatalysis. @@@ Regulating the synthesis of g-C3N4 enhanced charge separation to achieve high-efficiencyphotocatalyticselective xylonic acid conversion.

• 单位
  佛山科学技术学院