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Effects of Wet Chemical Oxidation on Surface Functionalization and Morphology of Highly Oriented Pyrolytic Graphite

preprint
submitted on 02.09.2020 and posted on 03.09.2020 by Mikhail Trought, Isobel Wentworth, Timothy Leftwich, Kathryn Perrine
The knowledge of chemical functionalization for area selective deposition (ASD) is crucial for designing the next generation heterogeneous catalysis. Surface functionalization by oxidation was studied on the surface of highly oriented pyrolytic graphite (HOPG). The HOPG surface was exposed to with various concentrations of two different acids (HCl and HNO3). We show that exposure of the HOPG surface to the acid solutions produce primarily the same -OH functional group and also significant differences the surface topography. Mechanisms are suggested to explain these strikingly different surface morphologies after surface oxidation. This knowledge can be used to for ASD synthesis methods for future graphene-based technologies.

Funding

NSF CHE 1725818

Michigan Tech Research Excellence Fund

History

Email Address of Submitting Author

kaperrin@mtu.edu

Institution

Michigan Technological University

Country

United States

ORCID For Submitting Author

0000-0002-5048-6411

Declaration of Conflict of Interest

The authors declare no competing interest.

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