Abstract
Graphene exhibits zero band gap, very small electrical resistivity, fast heat dissipation, and fast heterogeneous electron transfer properties. These features, coupled with affordable preparation cost and high surface area, predetermine graphene materials for application in electronic and electrochemical devices. Doping graphene with electron-withdrawing or -donating heteroatoms leads to tailoring of graphene electronic and electrochemical properties. Here, we discuss doping of graphene-based materials with main group heteroatoms (s and p blocks). We will also discuss the application of such doped graphenes in electronic, sensing, and energy storage/generation devices.
Highlights
Graphene exhibits zero band gap and fast electron transfer at the defect sites/edges of the sheets.[1,2] By doping graphene with heteroatoms, one can tailor the band gap by providing or withdrawing electrons from the graphene structure and by2
Martin Pumera has been a faculty member at Nanyang Technological University, Singapore since 2010. He received his PhD at Charles University, Czech Republic, in 2001
Pumera has broad interest in nanomaterials and microsystems, in the speci c areas of electrochemistry and synthetic chemistry of carbon nanomaterials, nanomotors, nanotoxicity, and energy storage devices. He is an associate editor of Science and Technology of Advanced Materials, and a member of Editorial board of Chem.–Eur
Summary
Pumera has broad interest in nanomaterials and microsystems, in the speci c areas of electrochemistry and synthetic chemistry of carbon nanomaterials, nanomotors, nanotoxicity, and energy storage devices. He is an associate editor of Science and Technology of Advanced Materials, and a member of Editorial board of Chem.–Eur. J., Electrochem. Potassium-doped graphene oxides exhibited faster electron transfer rates towards ferro/ferricyanide than did non-doped graphene oxides. Despite a larger amount of oxygen-containing groups, the K-doped graphene oxide exhibited faster heterogeneous electron transfer than did the control sample of thermally reduced graphene oxide.[3] It showed an electrocatalytic effect towards the reduction of NO2À and SO32À ions.[4]
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