Wet chemistry route for the decoration of carbon nanotubes with iron oxide nanoparticles for gas sensing

Beilstein Journal of Nanotechnology

Mostafa Fedawy^1¹  Hussam M. Elnabawy^1²  Juan Casanova-Chafer^1³  Mattia Scardamaglia^3⁴  Badawi Anis^2⁵ 

[1] Chemistry of Interaction Plasma Surface (ChIPS), University of Mons, 7000 Mons, Belgium^3;Electronics & Communications Department, Faculty of Engineering, Arab Academy for Science and Technology & Maritime Transport, Cairo, Egypt;MINOS-EMaS, Universitat Rovira i Virgili, Avda. Països Catalans, 26, 43007 Tarragona, Spain^1;Physics Department & Center for Environmental and Smart Technology (CEST), Faculty of Science, Fayoum University, Fayoum, Egypt more less^4;Spectroscopy Department, Physics Division, National Research Centre, 33 El Bohouth st. (former El Tahrir st.), P.O. 12622 Dokki, Giza, Egypt^2

关键词: benzene detection;    doping;    gas sensor;    metal nanoparticle decoration;    multiwalled carbon nanotubes;    NO2 detection;    room temperature gas sensing;    surface modification;   

DOI  :  10.3762/bjnano.10.10

学科分类：地球科学(综合)

来源: Beilstein - Institut zur Foerderung der Chemischen Wissenschaften

【 摘 要 】

In this work, we investigated the parameters for decorating multiwalled carbon nanotubes with iron oxide nanoparticles using a new, inexpensive approach based on wet chemistry. The effect of process parameters such as the solvent used, the amount of iron salt or the calcination time on the morphology, decoration density and nanocluster size were studied. With the proposed approach, the decoration density can be adjusted by selecting the appropriate ratio of carbon nanotubes/iron salt, while nanoparticle size can be modulated by controlling the calcination period. Pristine and iron-decorated carbon nanotubes were deposited on silicon substrates to investigate their gas sensing properties. It was found that loading with iron oxide nanoparticles substantially ameliorated the response towards nitrogen dioxide.

【 授权许可】

CC BY