Fabrication of nanoplate-like g-C{sub 3}N{sub 4}/Bi{sub 12}TiO{sub 20} heterojunction with enhanced visible-light photocatalytic activity
- Key Laboratory for Green Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072 (China)
- Key Laboratory of Systems Bioengineering of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 30072 (China)
Highlights: • G-C{sub 3}N{sub 4}/Bi{sub 12}TiO{sub 20} heterojunction was fabricated by a hydrothermal-annealing method. • Heterojunction structure accelerates the separation of photo-generated carriers. • Match in energy band renders the heterojunction excellent photocatalytic activity. • Rhodamine B can be mostly degraded by the heterojunction in 5 h under visible light. - Abstract: In recent years, the high-efficient visible-light-driven photocatalyst has become a research focus to realize the large-scale application of semiconductor photocatalysis. Herein, a novel nanoplate-like g-C{sub 3}N{sub 4}/Bi{sub 12}TiO{sub 20} (CN/BTO) heterojunction was prepared by a facile hydrothermal-annealing method for visible-light photocatalysis, and its morphology, structure and optical property were characterized systematically. The characterization results verify that the C−O bond exists between g-C{sub 3}N{sub 4} and BTO, thus confirming the formation of CN−BTO heterojunction. Furthermore, the CN/BTO heterojunctions display much higher photocatalytic performance for Rhodamine B (RhB) degradation than pure BTO and g-C{sub 3}N{sub 4} under visible light irradiation. Among them, the CN/BTO-3 sample with 60 wt% of g-C{sub 3}N{sub 4} exhibits the highest photocatalytic activity. The excellent photocatalytic activity can be primarily attributed to the energy band match and the heterojunction that can accelerate the migration and separation of photo-generated charge carriers. This kind of nanoplate-like CN/BTO heterojunction may find potential applications in numerous fields related to environment and energy.
- OSTI ID:
- 22730381
- Journal Information:
- Materials Research Bulletin, Vol. 93; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
Similar Records
WO{sub 3} nanoplates, hierarchical flower-like assemblies and their photocatalytic properties
An in situ annealing route to [Bi6O6(OH)2](NO3)4·2H2O/g-C3N4 heterojunction and its visible-light-driven photocatalytic performance