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

被引：59

作者：

Sahoo, P. K. ^{[1
]}

Aepuru, Radhamanohar ^{[2
]}

Panda, Himanshu Sekhar ^{[2
]}

Bahadur, D. ^{[1
]}

机构：

[1] Indian Inst Technol, IITB Monash Res Acad, Bombay 400076, Maharashtra, India

[2] Def Inst Adv Technol, Dept Mat Engn, Pune 411025, Maharashtra, India

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

关键词：

FACILE SYNTHESIS; INTERCONNECTED GRAPHENE; CHEMICAL-REDUCTION; ANODE MATERIAL; FUEL-CELLS; OXIDE; PERFORMANCE; METHANOL; NANOPARTICLES; NANOSHEETS;

D O I：

10.1038/srep17726

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页数：12

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