Pagona PapakonstantinouUniversity of Ulster, UK
Pagona Papakonstantinou holds a chair on Advanced Materials at the Engineering Research Institute of Ulster University, and leads a group, which specializes on the fabrication of low dimensional materials and hierarchical architectures, the comprehensive investigation of their physical and physicochemical properties and the demonstration of these materials in renewable energy and biosensing areas. Her work has attracted international recognition, as exemplified by 35 invited and two plenary talks at international conferences, large number of citations (3860 citations) and the following honours: (i) invited Research Fellowship from the RSC (2014) through ‘Leaders in the Field’ scheme for her significant contributions to nanoscience and nanomaterials; (ii) a Royal Academy of Engineering (RAE)/Leverhulme Trust Senior Research Fellowship (2012) and (iii) a Distinguished Research Fellowship from Ulster University (2003). Underpinning Research into graphene and 2D materials synthesis led to a series of patents, one of these has been licensed to 2D-tech/Versarien Ltd, a producer of 2D materials. She is a member and often chair of numerous national and international funding agencies and organisations including EPSRC, European Commission, Helmholtz-Zentrum Berlin Light Source. She has served and continues to serve on various committees such as: Diamond Light Source; electorate body for the promotion of academic members of staff; Royal Irish Academy on Chemical and Physical Sciences; Institute of Physics in Ireland; National Access Programme (NAP) of Tyndall National Institute and Royal Society. Papakonstantinou has played an active role on the organization of symposia in international conferences. Recently (2014) she was one of the organizers and chairs of RSC Faraday Discussion symposium: “New Advances in Carbon Nanomaterials” held in London.
Title：2D Nanomaterials for Energy Applications
SymposiumB09 Solar Cells
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Abstract
Layered two-dimensional materials such as graphene and transition metal chalcogenides possess a rare combination of properties, which are distinctly different from their bulk counterparts. One of the emerging applications of 2D materials is in electrocatalysis; the field of catalysis that is concerned with electrochemical reactions. This area is key to the development of energy conversion and storage devices such as batteries, fuel cells, electrolysers and solar cells. A major bottleneck to the commercialization of these devices is the discovery of efficient and cost-effective catalysts for accelerating important reactions such as the oxygen evolution reaction (OER), oxygen reduction reaction (ORR) and Hydrogen evolution reaction (HER), which take place at the electrodes of these devices. All three reactions are sluggish in nature and traditionally require the use of precious metal catalysts. Thus, the focus of our work is to develop inexpensive, stable and catalytically active materials for the ORR, OER and HER reactions, that can compete the performance of precious based catalysts.
In this talk, I will highlight some of our key contributions employing various forms of graphene including nanosized graphene, nitrogenated reduced graphene oxide (RGO), vertical graphene nanoflakes as well as MoS2 nanosheets as electrodes. Specifically, I will highlight the role of edge plane defects and thickness for catalysing reactions and present strategies for increasing the active edges of graphene and chalcogenide nanosheets. In addition, I will discuss the strategic implementation of highly coupled graphene based hybrid systems, which can lead to highly desirable properties for ORR, OER, and HER reactions.
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