Biodegradation of Single-Walled Carbon Nanotubes through Enzymatic Catalysis

被引：319

作者：

Allen, Brett L. ^{[1
]}

Kichambare, Padmakar D. ^{[1
]}

Gou, Pingping ^{[1
]}

Vlasova, Irina I. ^{[2
]}

Kapralov, Alexander A. ^{[2
]}

Konduru, Nagarjun ^{[2
]}

Kagan, Valerian E. ^{[2
]}

Star, Alexander ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA

[2] Univ Pittsburgh, Dept Environm & Occupat Hlth, Pittsburgh, PA 15260 USA

来源：

NANO LETTERS | 2008年 / 8卷 / 11期

关键词：

D O I：

10.1021/nl802315h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We show here the biodegradation of single-walled carbon nanotubes through natural, enzymatic catalysis. By incubating nanotubes with a natural horseradish peroxidase (HRP) and low concentrations of H2O2 (similar to 40 mu M) at 4 degrees C over 12 weeks under static conditions, we show the increased degradation of nanotube structure. This reaction was monitored via multiple characterization methods, including transmission electron microscopy (TEM), dynamic light scattering (DLS), gel electrophoresis, mass spectrometry, and ultraviolet-visible-near-infrared (UV-vis-NIR) spectroscopy. These results mark a promising possibility for carbon nanotubes to be degraded by HRP in environmentally relevant settings. This is also tempting for future studies involving biotechnological and natural (plant peroxidases) ways for degradation of carbon nanotubes in the environment.

引用

页码：3899 / 3903

页数：5

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