葡萄糖酸
纤维二糖
合成气
化学
水解
无机化学
有机化学
催化作用
纤维素酶
作者
Jiu Wang,Heng Zhao,Lin Chen,Jonas Björk,Johanna Rosén,Pawan Kumar,Liquan Jing,Jun Chen,Md Golam Kibria,Jinguang Hu
标识
DOI:10.1016/j.apcatb.2023.123665
摘要
Here, we demonstrate the selective cellobiose (building block of cellulose) photoreforming for gluconic acid and syngas co-production in acidic conditions by rationally designing a bifunctional polymeric carbon nitride (CN) with potassium/sulfur co-dopant. This heteroatomic doped CN photocatalyst possesses enhanced visible light absorption, higher charge separation efficiency than pristine CN. Under acidic conditions, cellobiose is not only more efficiently hydrolyzed into glucose but also promotes the syngas and gluconic acid production. Density functional theory (DFT) calculations reveal the favorable generation of •O2− during the photocatalytic reaction, which is essential for gluconic acid production. Consequently, the fine-designed photocatalyst presents excellent cellobiose conversion (>80%) and gluconic acid selectivity (>70%) together with the co-production of syngas (~56 μmol g-1 h-1) under light illumination. The current work demonstrates the feasibility of biomass photoreforming with value-added chemicals and syngas co-production under mild condition.
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