Facet-Dependent Activity of Pt Nanoparticles as Cocatalyst on TiO2 Photocatalyst for Dye-Sensitized Visible-Light Hydrogen Generation
Joint Authors
Guan, Rongfeng
Cui, Entian
Hou, Guihua
Shao, Rong
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-05-17
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
The photocatalytic activities of polyoriented and preferential Pt(111) nanoparticles supported on TiO2 (Pt(poly)/TiO2 and Pt(111)/TiO2) were investigated by the photocatalytic hydrogen generation from water under visible-light irradiation.
The photocatalytic hydrogen production rate of Pt(111)/TiO2 was 1.6 times higher than that of Pt(poly)/TiO2.
The corresponding apparent activation energy on Pt(111)/TiO2 was about 2.39 KJ/mol, while on Pt(poly)/TiO2, it was about 4.83 KJ/mol.
The difference in the apparent activation energies was probably due to the diversity in the number of surface atoms at corners and edges between the Pt(poly) and Pt(111) nanoparticles.
The photocurrent of Pt(111)/TiO2 was also bigger than that of Pt(poly)/TiO2, implying that the surface structure of Pt(111) nanoparticles can improve the transfer efficiency of photo-induced electrons from the conduction band of TiO2 to Pt nanoparticles.
As a result, the surface structure of Pt nanoparticles played an important role in the reactivity and kinetics performance of hydrogen evolution.
Therefore, the photocatalytic properties of Pt/TiO2 strongly depended on the surface structure of Pt nanoparticles.
American Psychological Association (APA)
Cui, Entian& Hou, Guihua& Shao, Rong& Guan, Rongfeng. 2016. Facet-Dependent Activity of Pt Nanoparticles as Cocatalyst on TiO2 Photocatalyst for Dye-Sensitized Visible-Light Hydrogen Generation. Journal of Nanomaterials،Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1109112
Modern Language Association (MLA)
Cui, Entian…[et al.]. Facet-Dependent Activity of Pt Nanoparticles as Cocatalyst on TiO2 Photocatalyst for Dye-Sensitized Visible-Light Hydrogen Generation. Journal of Nanomaterials No. 2016 (2016), pp.1-7.
https://search.emarefa.net/detail/BIM-1109112
American Medical Association (AMA)
Cui, Entian& Hou, Guihua& Shao, Rong& Guan, Rongfeng. Facet-Dependent Activity of Pt Nanoparticles as Cocatalyst on TiO2 Photocatalyst for Dye-Sensitized Visible-Light Hydrogen Generation. Journal of Nanomaterials. 2016. Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1109112
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1109112