Abstract
In the present work, we described the post-treatment effects of applying different plasma atmosphere conditions on the electrochemical performances of the multiwalled carbon nanotubes (MWCNTs). For the study, a composite of MWCNTs/Co/Ti was successfully grown on the silicon substrate and then pre-treated with ammonia, oxygen and hydrogen plasma. The composite was characterized by making use of field emission scanning electron microscopy (FESEM) for the surface morphology and Raman spectroscopy for the functionalization. Further, the electrochemical measurements were performed with the use of the cyclic voltammetry (CV) applied in the 0.01 M potassium ferricyanide in 0.1 M KCl solution. On testing, the results indicated that the NH3-treated MWCNTs have the highest efficiency as compared to the other pretreatments and control. This increased performance of NH3 treated sample can be linked to the enhanced surface area of the composite, thereby improved adsorption and associated interaction with that of the analyte molecules at the electrodes. Further comparison of the electrode with that of commercial Dropsens electrodes provided the confirmation for the efficiency of the NH3/MWCNTs, thereby suggesting for the potentiality of applying the NH3 modified electrode towards electrochemical applications.
Highlights
Nanofabrication comprises the manufacturing and utilization of materials and devices with dimensions in the range of 1–100 nm and because of having diverse applications, the nanomaterials research represents an advanced developing area of nanotechnology
Figure, itit confirms confirms for for the the formation of all multiwalled carbon nanotubes (MWCNTs) in a tube tube like like structure structure and in in addition, addition, there are no no significant significant changes appearing to the morphology of samples that are being treated with plasma
The persistence of like even after plasma treatment confirmsconfirms that there arethere no physical tubestructures like structures eventhe after the plasma treatment that are nochanges physicaloccurring changes to the morphology of the MWCNTs due to NHdue
Summary
Nanofabrication comprises the manufacturing and utilization of materials and devices with dimensions in the range of 1–100 nm and because of having diverse applications, the nanomaterials research represents an advanced developing area of nanotechnology. Among many different kinds of nanomaterials in use, one of the most exciting classes is considered to be the carbon nanotubes (CNTs), or “bucky tubes”. Since their discovery in the early 1990’s by Ijima, the CNTs have inspired prevalent investigations amongst many researchers [2]. Materials 2018, 11, 1902 by the CNTs made them to be potentially applicable in many different sectors of today’s technology including the solar cells, catalysis, engineering and biomedical [3]. The original CNTs surface reactive properties have the ability to form the self-aggregated nanostructures limit their application in the adsorption and dispersion sector. The enhancement in the properties of CNTs by means of surface modification is required so as to improve their dispersion in the organic and polymeric matrices [4]
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