Article history: In this study microwave-assisted reduction (MrGO) and direct reduction of graphene oxide (rGO) by Ti Received 24 August 2015 powders were established, and the effect of the reaction conditions on the reduction were discussed. The Received in revised form 23 October 2015 results showed that GO can be effectively reduced by both methods, however, microwave assistance can Accepted 8 November 2015 greatly shorten the reduction time. The produced Ti ions from the reaction of Ti powder with GO were Available online 12 November 2015 transferred to TiO by hydrolysis and formed MrGO/TiO and rGO/TiO . They were used as adsorbents for 2 2 2 the removal of methylene blue (MB). MrGO/TiO showed a higher adsorption capacity (q , 845.6 mg/g) 2 max Keywords: than rGO/TiO (q , 467.6 mg/g). Investigation on the adsorption MB onto MrGO/TiO was conducted 2 max 2 Microwave and demonstrated that adsorption kinetics followed the pseudo second-order kinetics model and the Reduction adsorption isotherm was well described by the Langmuir isotherm model. The recycling of MrGO/TiO Graphene was achieved by photocatalytic degradation of MB catalyzed by MrGO/TiO itself. Titania 2 Adsorption © 2015 Elsevier B.V. All rights reserved. Methylene blue 1. Introduction dye
Applied Surface Science – Elsevier
Published: Jan 1, 2016
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