TY - JOUR
T1 - Visible Light-Driven Photocatalytic H 2 Generation and Mechanism Insights into Bi 2 O 2 CO 3 /G-C 3 N 4 Z-Scheme Photocatalyst
AU - Yang, Chengwu
AU - Xue, Zhe
AU - Qin, Jiaqian
AU - Sawangphruk, Montree
AU - Rajendran, Saravanan
AU - Zhang, Xinyu
AU - Liu, Riping
N1 - Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/2/28
Y1 - 2019/2/28
N2 - Developing a low-cost photocatalyst with efficient performance is significant for practical application of solar-to-fuel conversion. Here, we first adopt a facile method to synthesize Bi 2 O 2 CO 3 -modified g-C 3 N 4 heterojunction via in situ thermal growth. Bi 2 O 2 CO 3 nanoparticles on g-C 3 N 4 nanosheets play a vital role in improving the photocatalytic activity of splitting water for hydrogen production. The activity of Bi 2 O 2 CO 3 /g-C 3 N 4 heterojunction during 5 h reaches 965 μmol·g -1 ·h -1 , which is much higher than that of pure g-C 3 N 4 (337 μmol·g -1 ·h -1 ) or other modified g-C 3 N 4 materials. The significantly enhanced photocatalytic activity is attributed to direct Z-scheme system construction, resulting in a superior charge carrier separation ability. Theoretical calculations further reveal the redistribution of charge carrier at interface between Bi 2 O 2 CO 3 and g-C 3 N 4 . This work provides new direction to synthesize g-C 3 N 4 -based heterojunction with high photocatalytic performance for alleviating energy and environmental issues.
AB - Developing a low-cost photocatalyst with efficient performance is significant for practical application of solar-to-fuel conversion. Here, we first adopt a facile method to synthesize Bi 2 O 2 CO 3 -modified g-C 3 N 4 heterojunction via in situ thermal growth. Bi 2 O 2 CO 3 nanoparticles on g-C 3 N 4 nanosheets play a vital role in improving the photocatalytic activity of splitting water for hydrogen production. The activity of Bi 2 O 2 CO 3 /g-C 3 N 4 heterojunction during 5 h reaches 965 μmol·g -1 ·h -1 , which is much higher than that of pure g-C 3 N 4 (337 μmol·g -1 ·h -1 ) or other modified g-C 3 N 4 materials. The significantly enhanced photocatalytic activity is attributed to direct Z-scheme system construction, resulting in a superior charge carrier separation ability. Theoretical calculations further reveal the redistribution of charge carrier at interface between Bi 2 O 2 CO 3 and g-C 3 N 4 . This work provides new direction to synthesize g-C 3 N 4 -based heterojunction with high photocatalytic performance for alleviating energy and environmental issues.
UR - https://www.scopus.com/pages/publications/85061939984
U2 - 10.1021/acs.jpcc.8b10604
DO - 10.1021/acs.jpcc.8b10604
M3 - Article
AN - SCOPUS:85061939984
SN - 1932-7447
VL - 123
SP - 4795
EP - 4804
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 8
ER -
