Dual Functions of O-Atoms in the g-C3N4/BO0.2N0.8Interface : Oriented Charge Flow In-Plane and Separation within the Interface to Collectively Promote Photocatalytic Molecular Oxygen Activation
(2020) In ACS Applied Materials and Interfaces 12(30). p.34432-34440- Abstract
The photocatalytic performance of two-dimensional materials is largely limited by the fast recombination of photogenerated charges. Herein, we design and fabricate a novel g-C3N4/BO0.2N0.8 van der Waals heterostructure to realize oriented charge flow in-plane and separation within the interface. On one hand, a B-C bond forms within the g-C3N4/BO0.2N0.8 interface after the introduction of O atoms. The B-C bond as the mediator bridges g-C3N4 and BO0.2N0.8 sides to enhance the effective separation of photogenerated charges. On the other hand, the existence of O atoms promotes the formation of a B-O-O-B intermediate to realize that molecular oxygen can directionally obtain electrons from the surface to generate O2-. As a result, BO0.2N0.8... (More)
The photocatalytic performance of two-dimensional materials is largely limited by the fast recombination of photogenerated charges. Herein, we design and fabricate a novel g-C3N4/BO0.2N0.8 van der Waals heterostructure to realize oriented charge flow in-plane and separation within the interface. On one hand, a B-C bond forms within the g-C3N4/BO0.2N0.8 interface after the introduction of O atoms. The B-C bond as the mediator bridges g-C3N4 and BO0.2N0.8 sides to enhance the effective separation of photogenerated charges. On the other hand, the existence of O atoms promotes the formation of a B-O-O-B intermediate to realize that molecular oxygen can directionally obtain electrons from the surface to generate O2-. As a result, BO0.2N0.8 instead of g-C3N4 is considered to be the main reaction side, and the energy barrier of NO3- generation is significantly decreased. The NO removal performance of g-C3N4/BO0.2N0.8 is enhanced and the NO2 generation is effectively controlled compared with that of g-C3N and g-C3N4/BN. This work could provide an effective and facile strategy to tune oriented charge transfer.
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- author
- Cao, Yuehan ; Zhang, Ruiyang ; Zheng, Qian ; Cui, Wen ; Liu, Yang ; Zheng, Kaibo LU ; Dong, Fan and Zhou, Ying
- organization
- publishing date
- 2020-07-29
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- effective separation of photogenerated charges, g-CN/BONinterface, molecular oxygen activation, oriented charge transfer, oxygen modification
- in
- ACS Applied Materials and Interfaces
- volume
- 12
- issue
- 30
- pages
- 9 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- pmid:32614161
- scopus:85089707614
- ISSN
- 1944-8244
- DOI
- 10.1021/acsami.0c09216
- language
- English
- LU publication?
- yes
- id
- 7f7e375c-dc7b-43dc-a153-fbb3f826dccd
- date added to LUP
- 2021-01-12 10:29:35
- date last changed
- 2024-08-22 11:22:44
@article{7f7e375c-dc7b-43dc-a153-fbb3f826dccd, abstract = {{<p>The photocatalytic performance of two-dimensional materials is largely limited by the fast recombination of photogenerated charges. Herein, we design and fabricate a novel g-C3N4/BO0.2N0.8 van der Waals heterostructure to realize oriented charge flow in-plane and separation within the interface. On one hand, a B-C bond forms within the g-C3N4/BO0.2N0.8 interface after the introduction of O atoms. The B-C bond as the mediator bridges g-C3N4 and BO0.2N0.8 sides to enhance the effective separation of photogenerated charges. On the other hand, the existence of O atoms promotes the formation of a B-O-O-B intermediate to realize that molecular oxygen can directionally obtain electrons from the surface to generate O2-. As a result, BO0.2N0.8 instead of g-C3N4 is considered to be the main reaction side, and the energy barrier of NO3- generation is significantly decreased. The NO removal performance of g-C3N4/BO0.2N0.8 is enhanced and the NO2 generation is effectively controlled compared with that of g-C3N and g-C3N4/BN. This work could provide an effective and facile strategy to tune oriented charge transfer. </p>}}, author = {{Cao, Yuehan and Zhang, Ruiyang and Zheng, Qian and Cui, Wen and Liu, Yang and Zheng, Kaibo and Dong, Fan and Zhou, Ying}}, issn = {{1944-8244}}, keywords = {{effective separation of photogenerated charges; g-CN/BONinterface; molecular oxygen activation; oriented charge transfer; oxygen modification}}, language = {{eng}}, month = {{07}}, number = {{30}}, pages = {{34432--34440}}, publisher = {{The American Chemical Society (ACS)}}, series = {{ACS Applied Materials and Interfaces}}, title = {{Dual Functions of O-Atoms in the g-C<sub>3</sub>N<sub>4</sub>/BO<sub>0.2</sub>N<sub>0.8</sub>Interface : Oriented Charge Flow In-Plane and Separation within the Interface to Collectively Promote Photocatalytic Molecular Oxygen Activation}}, url = {{http://dx.doi.org/10.1021/acsami.0c09216}}, doi = {{10.1021/acsami.0c09216}}, volume = {{12}}, year = {{2020}}, }