Universiteit Leiden

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Lecture

FRESH Lecture

  • Prof. dr. Robert Dryfe (University of Manchester)
Date
Thursday 12 May 2016
Time
Series
FRESH Lectures
Location
Gorlaeus Building
Einsteinweg 55
2333 CC Leiden
Room
Havinga Lecture Hall

Studies of well-defined electrode surfaces have generally used single crystals of noble metals, however there are many open questions relating to the electrochemical properties of graphite and its 2-dimensional analogue, graphene. Graphite can be obtained in high purity form, either synthetically or as a natural material, and can readily be “cleaved” to regenerate smooth, nominally “clean” surfaces. In fact, the emergence of graphene has generated considerable debate about the intrinsic cleanliness of graphite surfaces [1,2], which relates to the parallel debate about the electroactivity of graphitic/graphene materials [3,4]. We will present data following on from our recent work on the electroactivity of mechanically-exfoliated graphene samples [5,6], and show how a facile strategy based on the adsorption of graphene at the organic/water interface can be used to functionalise this material [7]. Finally, new phenomena, such as the recently observed proton conductivity of 2D materials will be briefly discussed [8].

References

[1] Z. Li et al, Nature Materials, 2013, 12, 925.
[2] C-J Shih et al, Phys. Rev. Lett., 2012, 109, 176101.
[3] C.E. Banks et al, Chem. Comm., 2004, 1804.
[4] A.G. Güell et al, J. Amer. Chem. Soc., 2012, 134, 7258. [5] P.S. Toth et al, Chem. Sci, 2014, 5, 582.
[6] M. Velický et al, ACS Nano, 2014, 8, 10089.
[7] P.S. Toth et al, Chem. Sci, 2015, 6, 1316.
[8] S. Hu et al, Nature, 2014, 516, 227.

Prof. Robert Dryfe profile

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