Elnabawy Hussam M, Casanova-Chafer Juan, Anis Badawi, Fedawy Mostafa, Scardamaglia Mattia, Bittencourt Carla, Khalil Ahmed S G, Llobet Eduard, Vilanova Xavier
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.
Beilstein J Nanotechnol. 2019 Jan 9;10:105-118. doi: 10.3762/bjnano.10.10. eCollection 2019.
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.
在这项工作中，我们采用一种基于湿化学的新型廉价方法，研究了用氧化铁纳米颗粒修饰多壁碳纳米管的参数。研究了诸如所用溶剂、铁盐用量或煅烧时间等工艺参数对形态、修饰密度和纳米团簇尺寸的影响。通过所提出的方法，可以通过选择碳纳米管/铁盐的合适比例来调节修饰密度，同时可以通过控制煅烧时间来调节纳米颗粒的尺寸。将原始的和铁修饰的碳纳米管沉积在硅衬底上，以研究它们的气敏特性。结果发现，负载氧化铁纳米颗粒显著改善了对二氧化氮的响应。
