期刊 Neurotransmitter Dopamine Enhanced Sensing Detection Using Fibre-Like Carbon Nanotubes by Chemical Vapor Deposition Technique  

作  者:Krishna, Vemula Mohana[1]; Somanathan, T[1]; Manikandan, E[2]; Tadi, Kiran Kumar[3]; Uvarajan, S[2]

机构地区:[1]Department of Nanoscience, School of Basic Sciences, Vels University, Chennai 600117, India [2]Department of Physics and Bio-Chemistry, TVUAC Campus, Thiruvalluvar University, Thennangur 604408, India [3]Institute of Chemistry, Hebrew University of Jerusalem, Jerusalem-91904, Israel

出  处:Journal of Nanoscience and Nanotechnology2018,18(8),5380-5389,10

语  种:外文

出 版 国:美国

摘  要:Carbon nanotubes (CNTs) are still receiving much attention in bio-sensing applications due to their remarkable properties. In this present research work, fibre-like carbon nanotubes (f-CNTs) were successfully fabricated over copper�Cmolybdenum (Cu�CMo) substituted alumina nanoparticles at atmospheric pressure by chemical vapor deposition (CVD) technique and effectively employed as a neurotransmitter dopamine (DA) sensor. The obtained product was purified and structurally characterized by various techniques such as, field emission scanning electron microscope (FESEM), energy dispersive X-ray spectroscopy (EDX), Raman spectroscopy, high resolution transmission electron microscope (HRTEM) and X-ray photoelectron spectroscopy (XPS) analysis. Structural characterization, which reveals the material contains fibre-like multi walled carbon nanotubes with graphene layers having diameter in the range of 10�C20 nm and 200�C300 nm inner and outer, respectively and has certain crystallinity. The weight percentages of Cu, Mo in Alumina catalyst, reaction temperature, acetylene flow rate and reaction time have been optimised to yield maximum of carbon product. Electrochemical properties of the material towards DA sensing were studied by cyclic voltammetry (CV), and diffuse pulse voltammetry (DPV) techniques. The sensor exhibits linear relationship among the peak current and DA concentration from 8 to 45 ��M with detection limit of 5.3 ��M (S/N = 3). The presence of structural analogues of DA has no deleterious effect on the DA anodic peak current.

关 键 词:CVD Technique  Dopamine Sensing  Fibre-Like Carbon Nanotubes  High Yield 

 

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