From pollutant to chemical feedstock: Valorising anthropogenic carbon dioxide using carbon nitride-based architectures as powerful photocatalysts

从污染物到化学原料：使用基于氮化碳的结构作为强大的光催化剂来稳定人为二氧化碳的价值

• 批准号: 530742479
• 负责人: Dr. Pratibha Saini, Ph.D.
• 金额: --
• 依托单位: Arbeitsgruppe Molekulare Photonik
• 依托单位国家: 德国
• 项目类别: WBP Position
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/530742479?language=en
• 关键词: pollutant; chemical; feedstock; Valorising; anthropogenic

The objectives of this project are to develop polymeric carbon nitride (g-C3N4)-based architectures with tailored optical and photoredox properties through structural modulation, sensitization with carbon quantum dots, and heterojunction construction with molecular redox catalysts. The project aims to investigate the alteration of conduction and valence bands' edge positions and the transfer kinetics of photo-generated carriers at interfaces of tailored g-C3N4 materials. The project also aims to explore the photocatalytic potential of g-C3N4-based architectures towards direct CO2 activation and utilization in organic synthesis and investigate CO2 as a direct or indirect oxidant and carboxylative agent. To achieve these objectives, various analytical, electrochemical, photoelectrochemical, time-resolved spectroscopic, and mechanistic studies will be employed to determine the factors affecting charge carriers' dynamics, separation, recombination process, and catalytic turnover. The project's outcomes are expected to advance the knowledge of g-C3N4-based architectures for CO2 photoreduction and fixation in organic synthesis and provide novel design rules for visible light-responsive g-C3N4-based architectures.

该项目的目标是开发基于聚合氮化碳（g-C3 N4）的架构，通过结构调制，碳量子点敏化和分子氧化还原催化剂的异质结构建，具有定制的光学和光氧化还原特性。本计画旨在研究特制g-C3 N4材料的导带与价带边缘位置的改变，以及光生载子在界面处的转移动力学。该项目还旨在探索基于g-C3 N4的结构在有机合成中直接活化和利用CO2的光催化潜力，并研究CO2作为直接或间接氧化剂和羧化剂。为了实现这些目标，将采用各种分析、电化学、光电化学、时间分辨光谱和机理研究来确定影响电荷载流子动力学、分离、复合过程和催化周转的因素。该项目的成果预计将推进g-C3 N4为基础的架构的CO2光还原和固定在有机合成的知识，并为可见光响应g-C3 N4为基础的架构提供新的设计规则。