Premium
In Situ Corrosion Fabrication of NaNbO 3 /Nb 3 O 7 F Heterojunctions with Optimized Band Realignment for Enhanced Photocatalytic Hydrogen Evolution
Author(s) -
Li Zhen,
Huang Fei,
Xiong Xin,
Yan Aihua,
Dong Haiming,
Xu Yifeng,
Gao Qingyu
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202004813
Subject(s) - heterojunction , photocatalysis , materials science , catalysis , fabrication , hydrogen production , corrosion , water splitting , chemical engineering , in situ , absorption (acoustics) , phase (matter) , nanotechnology , optoelectronics , metallurgy , chemistry , composite material , medicine , alternative medicine , organic chemistry , pathology , engineering , biochemistry
Heterostructured photocatalysis is a significant issue owing to the unique band alignment, improved spectrum absorption, and enhanced photocatalytic activity. However, the construction of uniform, controllable, and effective heterojunctions is still a huge challenge. Herein, NaNbO 3 /Nb 3 O 7 F heterojunctions are fabricated through an in situ corrosion technique for the first time. The influence of phase transformation on the hydrogen evolution reaction (HER) activity is investigated systematically in terms of photocatalytic water splitting for H 2 production. Interestingly, the band realignment and good interfacial contact endow the NaNbO 3 /Nb 3 O 7 F heterojunctions with a high HER activity (43.3 mmol g −1 h −1 ), which is about 2.4 times that of pure Nb 3 O 7 F and 1.36 times that of pure NaNbO 3 . The results may provide some new insights into the corrosion technique and HER activity of novel heterostructured catalysts.