Study Highlights Impacts of Contaminants on Two-Dimensional Materials - ACSPublications
By Hussain AhmedOct 4 2022Reviewed by Megan Craig, M.Sc. The surfaces of two-dimensional materials can randomly absorb and interact with molecules in the surrounding environment during manufacturing and preservation. This phenomenon, which significantly influences many characteristics of two-dimensional materials, is not usually identified and catered for in many research investigations.
These two-dimensional materials are generally classified based on their chemical composition. Two-dimensional materials are extremely thin sheets, so a thorough comprehension of their surface characteristics is necessary to understand their properties properly. Related StoriesHowever, this absorption can significantly affect the surface characteristics of two-dimensional materials and their interaction with other compounds. For instance, the water contact angle of freshly manufactured graphene changes dramatically following the absorption of ambient hydrocarbons.
Environmental Contamination: A Major Research Challenge Environmental contamination is a significant barrier to two-dimensional material research because it masks inherent features, causes inconsistencies across experiments, and reduces device efficiency. In this study, the researchers aimed to fill this research gap and identify the critical questions regarding the impacts of contaminants on two-dimensional materials. Firstly, the adsorption effects of airborne hydrocarbons on the properties of hexagonal two-dimensional materials were discussed.
These modifications might be important but very variable based on the surrounding environment. Several hours of exposure to air can raise the water contact angle by up to 40° and lower the double-layer capacitance in two-dimensional materials such as graphite by up to 50 %.
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