AUTHOR=Zhang Weibo , Chen Pinghua , Liu Jun , Huang NanNan , Feng Chenglian , Wu Daishe , Bai Yingchen 

TITLE=Effects of Different Delocalized π-Conjugated Systems Towards the TiO2-Based Hybrid Photocatalysts

JOURNAL=Frontiers in Chemistry

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2021.700380

DOI=10.3389/fchem.2021.700380

ISSN=2296-2646

ABSTRACT=Modulating the structure of a photocatalyst at the molecular level can improve the photocatalytic efficiency and guide the synthesis of highly qualified photocatalysts. In this study, TiO2 was modified by various organics to form different TiO2 based hybrid photocatalysts. 1, 10-phenanthroline (Phen) is an organic material with delocalized π conjugated systems. It was used to modified TiO2 to formed the hybrid photcatalyst of Phen/TiO2. Furthermore, 1,10-Phenanthrolin-5-amine (Phen-NH2) and 1,10-phenanthroline-5-nitro (Phen-NO2) were also used to modified TiO2 to form NH2-Phen/TiO2 and NO2-Phen/TiO2, respectively. The samples of TiO2, Phen/TiO2, NO2-Phen/TiO2 and NH2-Phen/TiO2 were carefully characterized and compared with their photocatalytic performances. The results indicated that the photocatalytic efficiencies followed the order of NH2-Phen/TiO2 > NO2-Phen/TiO2 > Phen/TiO2 > TiO2. It could be found that modifying TiO2 with different organics containing delocalized π conjugated systems could enhance the photocatalytic ability, furthermore, the level of this enhancement could be modulated by different delocalized π conjugated systems.