Premium
Construction of Nonmetallic p‐n Heterojunction With Face‐to‐Face Structure for Drastically Enhanced Photocatalytic Performance
Author(s) -
Wang Shuhao,
Li Chunmei,
Han Juan,
Wang Lei,
Lu Zhiyuan,
Wu Jiacong,
Wang Yun
Publication year - 2019
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201800488
Subject(s) - pedot:pss , heterojunction , photocatalysis , materials science , polymerization , delocalized electron , composite number , visible spectrum , chemical engineering , hydrothermal circulation , optoelectronics , photochemistry , nanotechnology , catalysis , chemistry , polymer , layer (electronics) , composite material , organic chemistry , engineering
It is still a great challenge to exploit high‐efficiency nonmetallic composite photocatalysts by structural design for improving H 2 production performance. Here, the nonmetallic p‐n heterojunctions with face‐to‐face structure are prepared via hydrothermal in‐situ polymerization of PEDOT on the surface of g‐C 3 N 4 . The face‐to‐face modification of PEDOT on g‐C 3 N 4 not only broadens the response in the visible light region but also increases the electron delocalization of conjugated system, which results in improving the visible light harvest ability and separation efficiency of charge carriers. The obtained PEDOT/g‐C 3 N 4 heterojunctions display the improved H 2 production activity, and the optimal H 2 production rate reaches up to 3636.6 μmol g −1 h −1 with QE value of 5.6% at 420 nm, which is 5.46 times higher than that of pure g‐C 3 N 4 (665.8 μmol g −1 h −1 ).