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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/18161
Title: Catalytic activity of pure Ni and Ni-33%Cu for dehydrogenation during graphene growth by chemical vapour deposition
Authors: Sasidhar K.N.
Srivastava A.
Bera P.
Lahiri, Indranil
Meka S.R.
Chaudhari G.P.
Published in: Proceedings of Materials Today
Abstract: Dissociative chemisorption of CH4/H2 gas mixture during graphene growth was investigated on commercially available Ni and Ni-33wt.% Cu substrates. Catalytic activity of both the substrates was severely decreased by employing very low gas pressure, thereby allowing the examination of very initial stages of dissociative-chemisorption. The chemisorption characteristics of the nickel rich nickel-copper alloy were interestingly found to be similar to those of pure copper, i.e., preferential adsorption of hydrogen over methane. These observations led to an in-depth understanding of the graphene growth mechanism on these substrates. © 2018 Elsevier Ltd.
Citation: Proceedings of Materials Today, (2018), 17284- 17292
URI: https://doi.org/10.1016/j.matpr.2018.04.140
http://repository.iitr.ac.in/handle/123456789/18161
Issue Date: 2018
Publisher: Elsevier Ltd
Keywords: Catalytic Dehydrogenation
Chemical Vapour Deposition
Graphene Growth Mechanism
Raman Spectroscopy
ISSN: 22147853
Author Scopus IDs: 57194204113
57204359065
7003365236
7004250718
Author Affiliations: Sasidhar, K.N., Nanomaterials and Applications Lab, Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Srivastava, A., Nanomaterials and Applications Lab, Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Bera, P., CSIR-National Aerospace Laboratories, Bangalore, 560017, India
Lahiri, I., Nanomaterials and Applications Lab, Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Funding Details: KNS would like to thank Lakshman Chakravarthy for his help in initial stages of sample preparation. This work was partially supported by the Summer Undergraduate Research Award (SURA) – 2015, IIT Roorkee, of KNS.
Corresponding Author: Sasidhar, K.N.; Nanomaterials and Applications Lab, Metallurgical and Materials Engineering, Indian Institute of Technology RoorkeeIndia; email: narasimhasasidhar17@gmail.com
Appears in Collections:Conference Publications [MT]

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