Exhaled breath gas sensing using pristine and functionalized WO3 nanowire sensors enhanced by UV-light irradiation

被引：41

作者：

Saidi, Tarik ^{[1
,2
]}

Palmowski, Dariusz ^{[3
]}

Babicz-Kiewlicz, Sylwia ^{[3
]}

Welearegay, Tesfalem Geremariam ^{[4
]}

El Bari, Nezha ^{[2
]}

Ionescu, Radu ^{[5
]}

Smulko, Janusz ^{[3
]}

Bouchikhi, Benachir ^{[1
]}

机构：

[1] Moulay Ismail Univ, Dept Phys, Fac Sci, Sensor Elect & Instrumentat Grp, BP 11201, Zitoune, Meknes, Morocco

[2] Moulay Ismail Univ, Fac Sci, Dept Biol, Biotechnol Agroalimentary & Biomed Anal Grp, BP 11201, Zitoune, Meknes, Morocco

[3] Gdansk Univ Technol, Dept Metrol & Optoelect, Gdansk, Poland

[4] Rovira & Virgili Univ, Dept Elect Elect & Automat Engn, E-43007 Tarragona, Spain

[5] Uppsala Univ, Dept Solid State Phys, Angstrom Lab, S-75121 Uppsala, Sweden

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2018年 / 273卷

基金：

欧盟地平线“2020”;

关键词：

WO(3)nanowire sensors; Metal nanoparticles; Sensor response enhancement; UV-light irradiation; Operating temperatures; Exhaled breath analysis; AEROSOL-ASSISTED CVD; ELECTRONIC NOSE; DIABETES-MELLITUS; TEMPERATURE; DIAGNOSIS; ACETONE; NANOPARTICLES; SENSITIVITY; FABRICATION; DEPOSITION;

D O I：

10.1016/j.snb.2018.07.098

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The development of advanced metal-oxide-semiconductor sensing technologies for the detection of Volatile Organic Compounds (VOCs) present in exhaled breath is of great importance for non-invasive, cheap and fast medical diagnostics. Our experimental studies investigate the effects of operating temperature selection and UV-light irradiation on improving the response of WO3 nanowire sensors towards exhaled breath exposure. Herein, six WO3 nanowire sensors (both pristine and doped with a range of metal nanoparticles such as Pt, Au, Au/Pt, Ni and Fe) were synthesised via Aerosol-Assisted Chemical Vapour Deposition (AACVD) and characterized by means of Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Energy Dispersive X-ray (EDX-ray). Breath measurements were performed in the dark and under UV-light irradiation at various sensor operating temperatures. The results demonstrate that UV-light irradiation combined with the optimisation of the sensors' operating temperature can greatly enhance the sensors' responses towards breath exposure.

引用

页码：1719 / 1729

页数：11

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