Exploiting sensor geometry for enhanced gas sensing properties of fluorinated carbon nanotubes under humid environment

被引：30

作者：

Struzzi, C. ^{[1
,2
]}

Scardamaglia, M. ^{[1
,3
]}

Casanova-Chafer, J. ^{[4
]}

Calavia, R. ^{[4
]}

Colomer, J. -F. ^{[5
]}

Kondyurin, A. ^{[3
,6
]}

Bilek, M. ^{[3
]}

Britun, N. ^{[1
]}

Snyders, R. ^{[1
,7
]}

Llobet, E. ^{[4
]}

Bittencourt, C. ^{[1
]}

机构：

[1] Univ Mons, Chim Interact Plasma Surface, CIRMAP, B-7000 Mons, Belgium

[2] Lund Univ, MAX Lab 4, S-22100 Lund, Sweden

[3] Univ Sydney, Dept Phys, Appl & Plasma Phys Grp, Sydney, NSW, Australia

[4] Univ Rovira & Virgili, MINOS Grp, Tarragona, Spain

[5] Univ Namur, Res Grp Carbon Nanostruct CARBONNAGe, B-5000 Namur, Belgium

[6] Farm, Ewingar, NSW 2469, Australia

[7] Mat Nova Res Ctr, B-7000 Mons, Belgium

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2019年 / 281卷

关键词：

Fluorinated carbon nanotubes; Sensing response to NO2 and NH3; Room temperature gas sensors; Increased response reproducibility under humid conditions; GRAPHENE; NITROGEN; ADSORPTION; CHEMISTRY; GRAPHITE; AMMONIA;

D O I：

10.1016/j.snb.2018.10.159

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Modification of the surface electronic properties of vertically aligned and randomly distributed carbon nanotubes and the hydrophobic character after exposure to Ar:F-2 and CF4 plasma are exploited to optimize the sensing characteristics of these materials. The sensing properties of fluorinated carbon nanotubes are disclosed by probing their stability and responsiveness towards the detection of two selected pollutants such as nitrogen dioxide and ammonia (NO2 and NH3). The effects of both humidity level and geometry of the sensing layer are assessed. It is demonstrated that fluorination, by increasing the surface hydrophobicity, results in increased response reproducibility and enhanced sensor response towards NH3 when using vertically aligned carbon nanotubes.

引用

页码：945 / 952

页数：8

共 40 条

[1] Investigation of Pristine Graphite Oxide as Room-Temperature Chemiresistive Ammonia Gas Sensing Material [J].