Affiliation:
1. Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province College of Chemistry and Chemical Engineering State Key Laboratory of Applied Organic Chemistry (Lanzhou University) Lanzhou University Lanzhou 730000 P. R. China
2. School of Physics and Electronic Information Yantai University 30 Qingquan Road Yantai 264005 China
Abstract
AbstractThree linear isoelectronic conjugated polymers PCC, PBC, and PBN are synthesized by Suzuki‐Miyaura polycondensation for photocatalytic hydrogen (H2) production from water. PBN presented an excellent photocatalytic hydrogen evolution rate (HER) of 223.5 µmol h−1 (AQY420 = 23.3%) under visible light irradiation, which is 7 times that of PBC and 31 times that of PCC. The enhanced photocatalytic activity of PBN is due to the improved charge separation and transport of photo‐induced electrons/holes originating from the lower exciton binding energy (Eb), longer fluorescence lifetime, and stronger built‐in electric field, caused by the introduction of the polar B←N unit into the polymer backbone. Moreover, the extension of the visible light absorption region and the enhancement of surface catalytic ability further increase the activity of PBN. This work reveals the potential of B←N fused structures as building blocks as well as proposes a rational design strategy for achieving high photocatalytic performance.
Funder
National Natural Science Foundation of China
Special Fund Project of Guiding Scientific and Technological Innovation Development of Gansu Province
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
4 articles.
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