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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

  • Chengwu Yang
  • , Zhe Xue
  • , Jiaqian Qin
  • , Montree Sawangphruk
  • , Saravanan Rajendran
  • , Xinyu Zhang
  • , Riping Liu
  • Yanshan University
  • Chulalongkorn University
  • Vidyasirimedhi Institute of Science and Technology

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

87 Citas (Scopus)

Resumen

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.

Idioma originalInglés
Páginas (desde-hasta)4795-4804
Número de páginas10
PublicaciónJournal of Physical Chemistry C
Volumen123
N.º8
DOI
EstadoPublicada - 28 feb 2019

ODS de las Naciones Unidas

Este resultado contribuye a los siguientes Objetivos de Desarrollo Sostenible

  1. ODS 7: Energía asequible y no contaminante
    ODS 7: Energía asequible y no contaminante

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