Premium
Conjugated Microporous Polymers with Immobilized TiO 2 Nanoparticles for Enhanced Visible Light Photocatalysis
Author(s) -
Ayed Cyrine,
Huang Wei,
Li Run,
da Silva Lucas Caire,
Wang Di,
Suraeva Oksana,
Najjar Wahiba,
Zhang Kai A. I.
Publication year - 2018
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201700234
Subject(s) - photocatalysis , conjugated microporous polymer , microporous material , catalysis , visible spectrum , conjugated system , materials science , photochemistry , polymer , photoredox catalysis , nanoparticle , oxidative coupling of methane , selectivity , photoinduced charge separation , chemical engineering , chemistry , nanotechnology , organic chemistry , optoelectronics , artificial photosynthesis , engineering , composite material
The search for heterogeneous, visible light‐active, transition metal‐free, stable, and reusable photocatalysts for organic photoredox reactions remains a challenge for the chemists. Here, this study reports on a series of hybrid photocatalysts consisting of conjugated microporous polymer‐based organic semiconductors with immobilized TiO 2 nanoparticles. The organic/inorganic semiconductor‐based hybrid photocatalytic system can enhance the photoinduced charge separation and thereby increasing the photocatalytic efficiency. As model reactions, the photocatalytic oxidative coupling reaction of amines and the selective oxidation of organic sulfides can be catalyzed with almost quantitative conversion and selectivity. The catalytic efficiency of the hybrid photocatalyst is higher than that of the pristine single photocatalytic systems as the conjugated microporous polymer and TiO 2 . Furthermore, the mechanistic study of the photoredox reactions is also described.