TY - JOUR
T1 - Enhanced Performance of Metal- and Additive-Free Pyridinium-Based Photocatalysts for Selective Aerobic Oxidation
T2 - The Role of Anion Exchange in Boosting Reactive Oxygen Species Generation
AU - Cui, Jing Wang
AU - Ma, Shuai
AU - Rao, Cai Hui
AU - Jia, Meng Ze
AU - Zhang, Jie
N1 - Publisher Copyright:
© 2022 American Chemical Society.
PY - 2022/2/14
Y1 - 2022/2/14
N2 - Developing economically and environmentally sustainable protocols for highly effective and selective oxidation of organics is of crucial importance in both academia and industry. Aiming at activating molecular oxygen to form reactive oxygen species as the key oxidant, a series of pyridinium-based small molecules have been designed and developed as simple and effective photocatalysts for the aerobic oxidation of alcohols to aldehydes. A facile anion exchange strategy is applied to introduce heavy atoms, which promote the generation of singlet oxygen and reduce the competitive effect between electron donors. A remarkably improved photocatalytic selectivity is realized in a simple, effective, and green approach at room temperature in an air atmosphere without any metals or additives. In the face of increasingly serious energy and environmental issues, this work provides new insights into molecular oxygen activation and reveals the great potential of the pyridinium family as a green and sustainable catalyst system toward an advanced oxidation reaction and the utilization of light energy.
AB - Developing economically and environmentally sustainable protocols for highly effective and selective oxidation of organics is of crucial importance in both academia and industry. Aiming at activating molecular oxygen to form reactive oxygen species as the key oxidant, a series of pyridinium-based small molecules have been designed and developed as simple and effective photocatalysts for the aerobic oxidation of alcohols to aldehydes. A facile anion exchange strategy is applied to introduce heavy atoms, which promote the generation of singlet oxygen and reduce the competitive effect between electron donors. A remarkably improved photocatalytic selectivity is realized in a simple, effective, and green approach at room temperature in an air atmosphere without any metals or additives. In the face of increasingly serious energy and environmental issues, this work provides new insights into molecular oxygen activation and reveals the great potential of the pyridinium family as a green and sustainable catalyst system toward an advanced oxidation reaction and the utilization of light energy.
KW - anion exchange
KW - enhanced ROS generation
KW - metal- and additive-free
KW - pyridinium-based catalyst
KW - selective photooxidation
UR - http://www.scopus.com/inward/record.url?scp=85124508009&partnerID=8YFLogxK
U2 - 10.1021/acssuschemeng.1c06103
DO - 10.1021/acssuschemeng.1c06103
M3 - Article
AN - SCOPUS:85124508009
SN - 2168-0485
VL - 10
SP - 2148
EP - 2157
JO - ACS Sustainable Chemistry and Engineering
JF - ACS Sustainable Chemistry and Engineering
IS - 6
ER -