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Designing new materials for functional applications depends upon our ability to understand and correlate the materials structure and chemistry to functional material properties. This is even more important for two-dimensional (2D) materials where thicknesses are on the order of a single atom to a few-atomic layers; therefore, any structural or chemical modification at these length scales can have a profound effect on modifying physical and chemical properties. 2D transition metal dichalcogenides (TMDs) such as MoS2 have emerged as a promising catalyst for the hydrogen evolution reaction with defects such as vacancies and edges being linked to high catalytic active sites as opposed to basal planes for the hydrogen evolution reaction (HER) [1]. Based on these findings it is important to develop controlled synthesis methods that will promote the formation of atomic edge structures engineered for high catalytic HER activity.


This article has been published in a revised form in Microscopy and Microanalysis This version is free to view and download for private research and study only. Not for re-distribution or re-use. Copyright © The Author(s), 2021. Published by Cambridge University Press on behalf of the Microscopy Society of America



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