基于复合多孔铈基颗粒的太阳辐射直接驱动二氧化碳-燃料高效转化机理研究

太阳能驱动二氧化碳转化有望同时解决人类面临的能源短缺与环境污染问题，然而面临太阳辐射捕获能力弱、转化效率低等问题，严重制约了太阳能-燃料高效转化技术的发展。针对上述挑战，本项目拟提出基于复合多孔铈基催化剂颗粒的太阳能直接驱动二氧化碳-燃料转化方法，并沿着能量传递与转化的全路径，从复合多孔铈基颗粒群太阳辐射捕获强化方法、复合多孔铈基颗粒催化反应机理与调控方法、太阳辐射直接驱动热质输运-化学反应耦合能量转换机制等三个方面开展研究。拟揭示太阳辐射光子与复合多孔颗粒多尺度相互作用机制，提出全光谱太阳能高效捕获方法；阐明复合多孔铈基颗粒催化反应机理，建立高效催化剂设计方法；发展热质传递-化学反应耦合能量转换模型，诠释传热特性、传质特性、化学反应相互作用规律。本项目研究内容涉及多个学科交叉，具有重要的学术意义和科学价值，研究成果为实现太阳能高效转化与二氧化碳资源化利用提供基础理论指导与技术支撑。

Solar energy driven carbon dioxide conversion is promising to solve current energy shortage and environment pollution problems. However, challenges like weak capture capability of solar radiation and low conversion efficiency severely inhibit the development of efficient solar energy-fuel conversion techniques. To tackle aforementioned challenges, this project aims to propose solar energy directly driven carbon dioxide-fuel conversion method based on composite porous CeO2 particles. Following the whole energy transport and conversion path, this project plans to conduct the following three researches: solar radiation capture improvement methods based on composite porous CeO2 based particles, their reaction mechanism and control method, solar energy directly driven heat and mass transfer-chemical reaction coupled energy conversion mechanism. This project plans to unveil the multiscale interaction mechanism between solar radiation photons and composite porous CeO2 based particles and propose full-spectrum efficient solar energy capture approaches; explain the reaction mechanism of composite porous CeO2 particles and establish design approaches of efficient catalysts; develop heat/mass transfer-chemical reaction coupled energy conversion model and unveil the interaction mechanism of heat transfer properties, mass transport features, and chemical reactions. This project’s research contents are involved with multiple disciplines, and have important academic significance and scientific interest. Research finds of this project will guide the fundamental theory and lay the technical foundation for realizing efficient solar energy conversion and turning carbon dioxide into resources.