Selective cellobiose photoreforming for simultaneous gluconic acid and syngas production in acidic conditions

IF 20.2 1区化学 Q1 CHEMISTRY, PHYSICAL

Applied Catalysis B: Environmental Pub Date : 2023-12-25 DOI:10.1016/j.apcatb.2023.123665

Jiu Wang , Heng Zhao , Lin Chen , Jonas Björk , Johanna Rosen , Pawan Kumar , Liquan Jing , Jun Chen , Md Golam Kibria , Jinguang Hu

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Abstract

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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在酸性条件下同时生产葡萄糖酸和合成气的选择性纤维素生物糖光转化技术

在这里，我们通过合理设计一种带有钾/硫共掺杂剂的双功能聚合物氮化碳（CN），展示了在酸性条件下选择性纤维生物糖（纤维素的组成成分）光催化葡萄糖酸和合成气联产的方法。这种杂原子掺杂的 CN 光催化剂具有更强的可见光吸收能力，电荷分离效率高于原始 CN。在酸性条件下，纤维生物糖不仅能更有效地水解成葡萄糖，还能促进合成气和葡萄糖酸的产生。密度泛函理论（DFT）计算显示，光催化反应过程中有利于生成-O2-，而这对葡萄糖酸的生成至关重要。因此，精细设计的光催化剂具有出色的纤维生物糖转化率（80%）和葡萄糖酸选择性（70%），并能在光照下同时产生合成气（约 56 μmol g-1 h-1）。目前的工作证明了在温和条件下生物质光转化增值化学品和联产合成气的可行性。

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来源期刊

Applied Catalysis B: Environmental 环境科学-工程：化工

CiteScore

38.60

自引率

6.30%

发文量

1117

审稿时长

24 days

期刊介绍： Applied Catalysis B: Environment and Energy (formerly Applied Catalysis B: Environmental) is a journal that focuses on the transition towards cleaner and more sustainable energy sources. The journal's publications cover a wide range of topics, including: 1.Catalytic elimination of environmental pollutants such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources. 2.Basic understanding of catalysts used in environmental pollution abatement, particularly in industrial processes. 3.All aspects of preparation, characterization, activation, deactivation, and regeneration of novel and commercially applicable environmental catalysts. 4.New catalytic routes and processes for the production of clean energy, such as hydrogen generation via catalytic fuel processing, and new catalysts and electrocatalysts for fuel cells. 5.Catalytic reactions that convert wastes into useful products. 6.Clean manufacturing techniques that replace toxic chemicals with environmentally friendly catalysts. 7.Scientific aspects of photocatalytic processes and a basic understanding of photocatalysts as applied to environmental problems. 8.New catalytic combustion technologies and catalysts. 9.New catalytic non-enzymatic transformations of biomass components. The journal is abstracted and indexed in API Abstracts, Research Alert, Chemical Abstracts, Web of Science, Theoretical Chemical Engineering Abstracts, Engineering, Technology & Applied Sciences, and others.

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