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Decoration of graphene sheets with Pd/Al2O3 hybrid particles for hydrogen storage applications

Goharibajestani, Zahra and Yürüm, Alp and Yürüm, Yuda (2016) Decoration of graphene sheets with Pd/Al2O3 hybrid particles for hydrogen storage applications. International Journal of Hydrogen Energy (SI), 41 (23). pp. 9810-9818. ISSN 0360-3199 (Print) 1879-3487 (Online)

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Official URL: http://dx.doi.org/10.1016/j.ijhydene.2016.03.201

Abstract

In this work, we developed a heterogeneous catalyst consisting of Al2O3 nanoparticle and low amounts of Pd that markedly enhances the hydrogen uptake of reduced graphene oxide (RGO). The Pd/Al2O3 hybrid particles were prepared by ultrasound-assisted impregnation of PdCl2 in aqueous suspension of Al2O3 nanoparticles. Hybrid particles were immobilized onto the RGO support, giving Pd/Al2O3 RGO nanocomposites. It was shown that incorporation of 1 wt% heterogeneous catalyst (<0.3 wt% Pd) significantly increased the hydrogen storage capacity of RGO from 0.17 wt% to 0.31 wt%. This indicated a raise of hydrogen uptake by factor of 1.8 in RGO nanocomposite. The improving hydrogen storage capacity of RGO nanocomposites by change of Al2O3 particle size and Pd content was linked to activation of processes usually grouped as spillover.

Item Type:Article
Additional Information:Conference: 1st International Symposium on Materials for Energy Storage and Conversion (ESC-IS) / Location: Middle E Tech Univ, Ankara, TURKEY / Date: SEP 07-09, 2015
Uncontrolled Keywords:Graphene; Pd; Al2O3; Hydrogen storage
Subjects:T Technology > TP Chemical technology > TP0155-156 Chemical engineering
T Technology > TP Chemical technology > TP0315-360 Fuel
T Technology > T Technology (General) > T174.7 Nanotechnology
ID Code:30005
Deposited By:Yuda Yürüm
Deposited On:10 Nov 2016 14:15
Last Modified:10 Nov 2016 14:15

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