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Ice-templated synthesis of multifunctional three dimensional graphene/noble metal nanocomposites and their mechanical, electrical, catalytic, and electromagnetic shielding properties

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Title Ice-templated synthesis of multifunctional three dimensional graphene/noble metal nanocomposites and their mechanical, electrical, catalytic, and electromagnetic shielding properties
 
Creator SAHOO, PK
AEPURU, R
PANDA, HS
BAHADUR, D
 
Subject LITHIUM ION BATTERIES
FUEL-CELLS
FACILE SYNTHESIS
INTERCONNECTED GRAPHENE
METHANOL OXIDATION
CHEMICAL-REDUCTION
ANODE MATERIAL
OXIDE
PERFORMANCE
NANOSHEETS
 
Description In-situ homogeneous dispersion of noble metals in three-dimensional graphene sheets is a key tactic for producing macroscopic architecture, which is desirable for practical applications, such as electromagnetic interference shielding and catalyst. We report a one-step greener approach for developing porous architecture of 3D-graphene/noble metal (Pt and Ag) nanocomposite monoliths. The resulting graphene/noble metal nanocomposites exhibit a combination of ultralow density, excellent elasticity, and good electrical conductivity. Moreover, in order to illuminate the advantages of the 3D-graphene/noble metal nanocomposites, their electromagnetic interference (EMI) shielding and electrocatalytic performance are further investigated. The as-synthesized 3D-graphene/noble metal nanocomposites exhibit excellent EMI shielding effectiveness when compared to bare graphene; the effectiveness has an average of 28 dB in the 8.2-12.4 GHz X-band range. In the electrooxidation of methanol, the 3D-graphene/Pt nanocomposite also exhibits significantly enhanced electrocatalytic performance and stability than compared to reduced graphene oxide/Pt and commercial Pt/C.
 
Publisher NATURE PUBLISHING GROUP
 
Date 2016-01-15T06:41:22Z
2016-01-15T06:41:22Z
2015
 
Type Article
 
Identifier SCIENTIFIC REPORTS, 5
2045-2322
http://dx.doi.org/10.1038/srep17726
http://dspace.library.iitb.ac.in/jspui/handle/100/17958
 
Language en