基于碳量子点的多组分高效光解水催化体系设计

项目名称： 基于碳量子点的多组分高效光解水催化体系设计

项目编号： No.21471106

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 康振辉

作者单位： 苏州大学

项目金额： 85万元

中文摘要： 面向解决能源危机与环境污染问题的重大战略需求，利用太阳光实现水的完全分解来制氢、制氧是一条理想的新能源路线。本项目将结合碳量子点，金属纳米粒子，多金属氧酸盐的荧光与光电化学性质，以典型无机材料（TiO2等）的反蛋白石结构作为催化剂载体，设计和构筑高效的多组分光解水催化体系。调控碳量子点的荧光性质，优化复合体系的光电化学性质，瞄准该体系对可见光的高效光吸收、光转换、能量传递以及电子传导与分离，提高该体系对太阳光的利用率。最终在不需要任何牺牲剂和助剂的条件下，实现可见光激发的高效完全光分解水，同时获得H2和O2。研究工作着眼于多组分体系的功能设计以及不同材料之间的性质协同、互补。本项目的开展无论是对深化纳米复合体系的表面/界面研究，还是对于开发绿色能源与解决环境污染等都具有重要的学术意义和实用前景。

中文关键词： 多金属氧酸盐；碳量子点；光催化；光解水

英文摘要： In the face of the great demand of solving energy crisis and environmental pollution problems, sunlight is utilized to achieve hydrogen and oxygen production by water splitting reaction. On the basis of our previous work, this project designs efficient composite catalytic system of water photolysis by using inverted opal of typical inorganic materials (TiO2 etc.) as catalyst support, and combining the fluorescent and photoelectric properties of carbon quantum dots, metal nanoparticles and polyoxometalates. We regulate the fluorescence of carbon quantum dots and optimize the photoelectric properties of composite system, aiming at its efficient light absorption, light conversion, energy transfer and electronic conduction and separation to improve the utilization of sunlight. Finally, we will realize entirely water photolysis activated by visible light and acquire H2 and O2 simultaneously without any sacrificial agents or additives. The relevant work focuses on the multi-component system design and different materials complementation. The implementation of this project has an important academic meaning and prospect of deepening the surface and interface research of nanocomposites, and developing green energy and solving environmental contamination.

英文关键词： Polyoxometalate;Carbon quantum dots;Photocatalysis;Water splitting