Geometry-dependent electrochemistry of graphene oxide family |
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| Affiliation: | 1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, PR China;2. Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, PR China;1. Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA 15261, USA;2. Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA;3. McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA |
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| Abstract: | The influence of graphene oxide geometry on electrochemical performance is of great interest, but there are few reports on this subject. Three different members of the graphene oxide family, graphene oxide nanosheets, graphene oxide nanoribbons, and graphene oxide quantum dots were comparatively investigated as electrode materials to systematically study the effect of geometric structure. The results showed that, as the geometric structure varies, the three graphene oxide materials possess different electrical conductivities, various defect densities and oxygen contents, as well as diverse electrode surface chemistry and microstructures, which combine together to result in the distinct electrochemical responses for the modified electrodes, depending on the redox system involved. This work broadens the method of studying the electrochemical performance of many other materials from the perspective of geometry. |
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