大共轭分子用于TiO2光催化效率和界面增强的策略  

Methods on Improvement of Photocatalytic Efficiency and Interface Bonding of TiO_2 Composites with Large Conjugating Molecules

作　　者：杨龙[1,2] 余育晏 江龙[1] 邱勇[2] 淡宜[1] 

机构地区：[1]高分子材料工程国家重点实验室(四川大学),四川大学高分子研究所,成都610065 [2]中国工程物理研究院总体工程研究所,四川绵阳621999

出　　处：《功能高分子学报》2017年第2期121-141,共21页Journal of Functional Polymers

基　　金：国家自然科学基金(51173116,51573109);四川大学高分子材料工程国家重点实验室基金(sklpme 2015-2-01)

摘　　要：利用光催化技术,将占太阳光能很大比重的可见光部分转化为能量密度更高的电能或化学能,并使之器件化,成为各国科技工作者关注的重点和热点。基于TiO_2光催化技术,针对影响光催化效率提升的光谱响应范围窄、光吸收能力弱和光生空穴复合等问题,本文主要以苝类和吡咯并吡咯二酮类有机材料为例,综述了大共轭分子分子聚集特性、TiO_2基光催化材料拓宽光谱响应能力和增强界面结合的策略与最新研究进展,对TiO_2基复合材料的下一步研究工作进行了展望。Photocatalysis has emerged as one of the most promising technologies converting the solar energy to chemical or electrical resources with the aims of visible-light utilization and devices＇ preparation.Basing on the factors restraining the photocatalytic efficiency because of the narrow photo-response range,low light absorption,and recombination of photo-generated holes and electrons,this paper focuses on the molecular aggregation owing large conjugation degree and the recent development of TiO2 photocatalytic composites based on the organic materials（perylene and diketopyrrolopyrrole） possessing large conjugating degree and summarizes the methods applied in the improvement of photocatalytic efficiency and interface bonding.Finally,we look forward to the future research work concerning the development of photocatalytic materials.

关 键 词：分子聚集 大共轭 二氧化钛 光催化 界面 

分 类 号：O63[理学—高分子化学] O472.8[理学—化学]