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Single step synthesis of Schottky-like hybrid graphene - titania interfaces for efficient photocatalysis

Yi, Zhifeng, Merenda, Andrea, Kong, Lingxue, Radenovic, Aleksandra, Majumder, Mainak and Dumee, Ludovic F 2018, Single step synthesis of Schottky-like hybrid graphene - titania interfaces for efficient photocatalysis, Scientific reports, vol. 8, no. 1, pp. 1-10, doi: 10.1038/s41598-018-26447-9.

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Title Single step synthesis of Schottky-like hybrid graphene - titania interfaces for efficient photocatalysis
Author(s) Yi, Zhifeng
Merenda, Andrea
Kong, LingxueORCID iD for Kong, Lingxue orcid.org/0000-0001-6219-3897
Radenovic, Aleksandra
Majumder, Mainak
Dumee, Ludovic FORCID iD for Dumee, Ludovic F orcid.org/0000-0002-0264-4024
Journal name Scientific reports
Volume number 8
Issue number 1
Article ID 8154
Start page 1
End page 10
Total pages 10
Publisher Nature Publishing Group
Place of publication London, Eng.
Publication date 2018-05-25
ISSN 2045-2322
Keyword(s) Schottky-like
titania
photocatalysis
metal surfaces
nanoscale materials
graphene
titanium
science & technology
Summary The development of 2D nanomaterial coatings across metal surfaces is a challenge due to the mismatch between the metal microstructure and the nanoscale materials. The naturally occurring thin oxidative layer present across all metal surfaces, may lead to low adherence and connectivity. In this paper, graphene/titania/Titanium hybrid films were for the first time fabricated by a single step chemical vapour deposition process across Titanium foils. The presence of graphene as a dopant was found to enhance the photocatalytic performance of the final products, applied to the degradation of organic molecules and to lead to Schottky-like junction formation at the metal/oxide interface. These Schottky junctions, where vacancies are present across the titania material due to the graphene doping and where Ti3+ ions are predominantly located, yield enhanced catalytic performance. The highest degradation rate was found to be 9.66 × 10-6 min-1, achieved by the sample grown at 700 °C for 5 min, which was 62% higher than the sample just treated at that temperature without graphene growth. This work provides evidence that graphene may be grown across pure Titanium metal and opens new avenues in biomedical devices design, tribological or separation applications.
Language eng
DOI 10.1038/s41598-018-26447-9
Copyright notice ©2018, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30109081

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.