Covalent Organic Framework-Bacteria Cascades for Sustainable Carbon Dioxide Reduction

共价有机框架-细菌级联可持续二氧化碳减排

• 批准号: EP/Y024273/1
• 负责人: Erwin Reisner
• 金额: $ 25.55万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FY024273%2F1
• 关键词: Covalent; Organic; Framework; Bacteria; Cascades

Artificial photosynthesis has though paved the way forward towards sustainable and clean energy, the progress has been often impeded by inefficient catalysis as well as costly and toxic materials. However, nature has been pursuing sunlight driven complicated chemical transformation with high selectivity and accuracy. Yet, such catalytic prowess is mostly restricted to naturally occurring reactions that are inefficient for practical application. Toward that end, integrating the strength of natural and artificial photosynthesis would capitalize on the most salient attributes of each component for efficient solar-to-chemical conversion. Herein, we have designed a covalent organic framework-bacteria biohybrid to catalyze carbon dioxide reduction reaction to acetate formation. A photo-sheet (COF|IO- ITO|polythiophenes:RuO2) combined with Sporomusa ovata bacteria would harness solar energy for selective acetate production using only carbon dioxide and water. The process would offer the much-desired sustainability as it will operate without sacrificial reagent or external voltage. The judicious selection of the cascades; microbes (produces carbon products in presence of hydrogen and carbon dioxide), phthalocyanine- porphyrin-based COF (produces hydrogen from water), Ruthenium oxide (RuO2) (for water oxidation) and polythiophenes (integrates anodes into ITO surface) would guarantee high efficiency of the system. The cost effectiveness and scale-up opportunities will lead to the practical deployment of a prototype.

尽管人工光合作用为可持续和清洁能源铺平了道路，但这一进展往往受到低效催化以及昂贵和有毒材料的阻碍。然而，自然界一直在追求阳光驱动的复杂化学转化，具有高选择性和准确性。然而，这种催化能力主要局限于自然发生的反应，这些反应在实际应用中效率低下。为此，整合自然光合作用和人工光合作用的力量，将利用每个组件最显著的属性，实现高效的太阳能到化学转换。在这里，我们设计了一种共价有机骨架-细菌生物杂化来催化二氧化碳还原反应生成乙酸酯。一张照片(COF|IO-ITO|聚噻吩烯：RuO2)与卵形孢子菌结合，将利用太阳能选择性地仅使用二氧化碳和水生产醋酸酯。这一过程将提供人们非常希望的可持续性，因为它将在没有牺牲试剂或外部电压的情况下运行。选择合理的级联；微生物(在氢气和二氧化碳存在的情况下产生碳产品)、基于酞菁-卟啉的COF(从水中产生氢气)、氧化RuO2(用于水氧化)和聚噻吩型(将阳极集成到ITO表面)将保证系统的高效率。成本效益和扩大机会将导致原型的实际部署。