Nanocellulose‐Assisted Molecularly Engineering of Nitrogen Deficient Graphitic Carbon Nitride for Selective Biomass Photo‐Oxidation

作者：Ren Zou, Zhongxin Chen, Linxin Zhong, Yang Wu, Tingzhen Li, Jianyun Gan, Yunyi Yang, Zehong Chen, Haihong Lai, Xuehui Li, Chuanfu Liu, Shimelis Admassie, Emmanuel Iheanyichukwu Iwuoha, Jun Biao Lu, Xinwen Peng · 发表于：Advanced Functional Materials · 年份：2023 · DOI：10.1002/adfm.202301311 · 被引用次数：75 · 研究领域：Advanced Photocatalysis Techniques、Copper-based nanomaterials and applications、Catalytic Processes in Materials Science

Abstract Structural modulation of graphitic carbon nitride (g‐C 3 N 4 ) remains a major challenge in rational catalyst design for artificial photosynthesis of valuable chemicals. Herein, a cellulose nanofiber (CNF) assisted polymerization is utilized to prepare 1D holey g‐C 3 N 4 nanorods (HCN) with nitrogen vacancies and oxygen dopants for photochemical synthesis of lactic acid via monosaccharide photooxidation. The HCN exhibits a remarkable yield of 75.5% for lactic acid from a wide assortment of sugars such as hexose (C5) to pentose (C6), together with an excellent hydrogen production rate of 2.8 mmol h −1 g −1 . Mechanistic studies confirm the rapid generation of superoxide radical is responsible for the superior activity, enjoying the synergetic effect between nitrogen vacancies and oxygen dopants. This work provides new directions for the design of green and efficient photocatalysts for biomass upgrading.