Room-temperature, selective detection of benzene at trace levels using plasma-treated metal-decorated multiwalled carbon nanotubes

被引：61

作者：

Leghrib, Radouane ^{[1
]}

Felten, Alexandre ^{[2
]}

Demoisson, Frederic ^{[3
]}

Reniers, Francois ^{[3
]}

Pireaux, Jean-Jacques ^{[2
]}

Llobet, Eduard ^{[1
]}

机构：

[1] Univ Rovira & Virgili, Tarragona 43007, Spain

[2] Univ Namur, B-5000 Namur, Belgium

[3] Univ Libre Bruxelles, B-1050 Brussels, Belgium

来源：

CARBON | 2010年 / 48卷 / 12期

关键词：

WORK FUNCTION; SENSOR ARRAY; COMPOSITES; PLATINUM; HEALTH;

D O I：

10.1016/j.carbon.2010.05.045

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hybrid materials consisting of oxygen plasma-treated multiwalled carbon nanotubes decorated with metal nanoparticles (e.g., Rh, Pd, Au or Ni) can be tailored for the recognition of benzene vapors with high sensitivity and selectivity. Metal nanoparticles donate or accept a significant amount of charge upon adsorption of a target molecule, so as to affect electron transport in the nanotube. The plasma treatment enables the cleaning, activation, functionalization and metal decoration of carbon nanotubes in a single step, which offers enormous flexibility for tuning the interfacial properties of the resulting hybrid materials. When combined in a microsensor array operating at room temperature, the use of benzene-sensitive and benzene-insensitive metal-decorated multiwalled carbon nanotubes can provide selective detection of benzene at trace levels with a detection limit below 50 ppb. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3477 / 3484

页数：8

共 42 条

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