设计铜的配位结构,提高葡萄糖光催化生产 C1 化学物质的能力

IF 15.7 1区 化学 Q1 CHEMISTRY, APPLIED Chinese Journal of Catalysis Pub Date : 2024-08-01 DOI:10.1016/S1872-2067(24)60098-7
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引用次数: 0

摘要

光催化分解糖类是提供 H2、CO 和 HCOOH 作为可持续能源载体的一种可行方法。然而,生产 C1 化学物质需要裂解糖类中坚固的 C-C 键并同时产生 H2,这仍然具有挑战性。在这里,通过掺氮提高了 Cu/TiO2 上葡萄糖分解为 HCOOH、CO(C1 化学品)和 H2 的光催化活性。由于氮的掺杂,在 Cu/TiO2 上形成了原子分散且稳定的抗光照射的 Cu 位点。铜离子和氮离子之间的电子相互作用产生了由 N 2p 轨道组成的价带结构和缺陷水平,这与未掺杂的 Cu/TiO2 截然不同。因此,电荷载流子的寿命得以延长,从而产生了 C1 化学物质和 H2,其生产率分别是 Cu/TiO2 的 1.7 倍和 2.1 倍。这项工作为设计用于光催化生物质转化的配位稳定的 Cu 离子提供了一种策略。
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Engineering the coordination structure of Cu for enhanced photocatalytic production of C1 chemicals from glucose

Photocatalytic decomposition of sugars is a promising way of providing H2, CO, and HCOOH as sustainable energy vectors. However, the production of C1 chemicals requires the cleavage of robust C−C bonds in sugars with concurrent production of H2, which remains challenging. Here, the photocatalytic activity for glucose decomposition to HCOOH, CO (C1 chemicals), and H2 on Cu/TiO2 was enhanced by nitrogen doping. Owing to nitrogen doping, atomically dispersed and stable Cu sites resistant to light irradiation are formed on Cu/TiO2. The electronic interaction between Cu and nitrogen ions originates valence band structure and defect levels composed of N 2p orbit, distinct from undoped Cu/TiO2. Therefore, the lifetime of charge carriers is prolonged, resulting in the production of C1 chemicals and H2 with productivities 1.7 and 2.1 folds that of Cu/TiO2. This work provides a strategy to design coordinatively stable Cu ions for photocatalytic biomass conversion.

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来源期刊
Chinese Journal of Catalysis
Chinese Journal of Catalysis 工程技术-工程:化工
CiteScore
25.80
自引率
10.30%
发文量
235
审稿时长
1.2 months
期刊介绍: The journal covers a broad scope, encompassing new trends in catalysis for applications in energy production, environmental protection, and the preparation of materials, petroleum chemicals, and fine chemicals. It explores the scientific foundation for preparing and activating catalysts of commercial interest, emphasizing representative models.The focus includes spectroscopic methods for structural characterization, especially in situ techniques, as well as new theoretical methods with practical impact in catalysis and catalytic reactions.The journal delves into the relationship between homogeneous and heterogeneous catalysis and includes theoretical studies on the structure and reactivity of catalysts.Additionally, contributions on photocatalysis, biocatalysis, surface science, and catalysis-related chemical kinetics are welcomed.
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