Platelet Graphite Nanofibers for Electrochemical Sensing and Biosensing: The Influence of Graphene Sheet Orientation

被引：107

作者：

Ambrosi, Adriano ^{[1
]}

Sasaki, Toshio ^{[2
]}

Pumera, Martin ^{[1
,3
]}

机构：

[1] Natl Inst Mat Sci, Ctr Biomat, Biomat Syst Grp, Tsukuba, Ibaraki 3050044, Japan

[2] Nagoya Univ, Ecotopia Sci Inst, High Voltage Electron Microscope Lab, Chikusa Ku, Nagoya, Aichi 4640814, Japan

[3] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki 3050044, Japan

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2010年 / 5卷 / 02期

关键词：

biosensors; carbon; electrochemistry; graphene; nanofibers; NANOTUBE-MODIFIED ELECTRODES; CARBON NANOTUBES; HYDROGEN-PEROXIDE; METAL IMPURITIES; NITRIC-ACID; FUNDAMENTALS; ACTIVATION; FILMS; OXIDE;

D O I：

10.1002/asia.200900544

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here, we demonstrate that platelet graphite nanofibers (PGNFs) exhibit fast heterogeneous electron-transfer rates for a wide variety of compounds such as FeCl3, ferrocyanide, dopamine, uric acid, ascorbic acid, and the reduced form of beta-nicotinamide adenine dinucleotide. The electrochemical properties of PGNFs are superior to those of multiwalled carbon nanotubes (MWCNTs) or graphite microparticles (GMPs). Transmission electron microscopy and Raman spectroscopy reveal that this arises from the unique graphene sheet orientation of such platelet nanofibers, which accounts for their unparalleled high ratio of graphene edge planes versus basal planes.

引用

页码：266 / 271

页数：6

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