Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/43745
Title: Green reduction and patterning of graphene oxide via photothermal and electrochemical methods
Authors: TAO YE
Keywords: graphene oxide, reduction, focused laser beam, direct writing, electrochemical,
Issue Date: 22-May-2013
Source: TAO YE (2013-05-22). Green reduction and patterning of graphene oxide via photothermal and electrochemical methods. ScholarBank@NUS Repository.
Abstract: The reduction of graphene oxide (GO) to reduced graphene oxide (RGO) provides a chemical synthesis route for solution-processable graphene widely harnessed in applications. Here we investigated and compared two different approaches for the green synthesis of RGO in ambient environment. First a focused laser beam system was used to locally reduce GO thin film. The changes in the morphology, chemical composition and electrical properties were studied. Controlled and facile patterning of the sample could be achieved. We then also investigated the reduction of GO via direct current. The reduction process was reversible and optically observable in real-time. The properties of electrically reduced GO (ERG) were also studied to confirm the change in its morphology, chemical composition and electrical. The process was tracked to elucidate the mechanism of the electrochemical reduction. Finally the two routes were combined for guided-electrochemical reduction of GO.
URI: http://scholarbank.nus.edu.sg/handle/10635/43745
Appears in Collections:Master's Theses (Open)

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