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Synthesis of Carboxylate-Functionalized Graphene Nanosheets for High Dispersion of Platinum Nanoparticles Based on the Reduction of Graphene Oxide via 1-pyrenecarboxaldehyde

Synthesis of Carboxylate-Functionalized Graphene Nanosheets for High Dispersion of Platinum Nanoparticles Based on the Reduction of Graphene Oxide via 1-pyrenecarboxaldehyde

Yinjie Kuang, Jinhua Chen, Xingliang Zheng, Xiaohua Zhang, Qionghua Zhou, Cuihong Lu

Nanotechnology. 2013 Oct 4;24(39):395604.

PMID: 24013585

Abstract:

A one-step reduction/functionalization strategy for the synthesis of carboxylate-functionalized graphene nanosheets is reported in this paper. 1-pyrenecarboxaldehyde (PCA) is introduced as a new reductant for the chemical reduction of graphene oxide (GO), serving three roles: reducing GO to graphene nanosheets (GNs), stabilizing the as-prepared GNs due to the electrostatic repulsion of the oxidation products of PCA (1-pyrenecarboxylate, PC⁻) on the surface of the GNs and anchoring Pt nanoparticles (Pt NPs) with high dispersion and small particle size. Transmission electron microscopy shows that Pt NPs with an average diameter of 1.3 ± 0.2 nm are uniformly dispersed on the surface of the PC⁻-functionalized GNs (PC⁻-GNs). The obtained Pt NPs/PC⁻-GNs nanohybrids have higher electrocatalytic activity and stability towards methanol oxidation in comparison with Pt NPs supported on GNs obtained by the chemical reduction of GO with the typical reductant, hydrazine.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP3029194	1-Pyrenecarboxaldehyde		3029-19-4	Price

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