Rapid industrial scale synthesis of robust carbon nanotube network electrodes for electroanalysis

Carbon nanotubes (CNT) have been extensively investigated for various electroanalytical applications. As the properties of CNTs heavily depend on fabrication conditions, it is expected that electrochemical performance will also vary between from different processes. However, still not well known how synthesis conditions affect CNTs. Thus, here we investigate effect rate physicochemical CNT networks. Through extensive structural and chemical analysis, show widely rates, fast slow, produced networks with surprisingly similar properties. The only distinct differences were seen in TEM tomography 3D reconstructions, where faster a less dense network larger bundle size. Moreover, minor changes composition Fe catalyst particles mainly exhibited metallic Fe, whereas carbide oxidized phases observed slower network. Although no electron transfer kinetics outer-sphere probes, was clear even these small affected surface sensitive inner-sphere analytes. With i) sensitivity towards all analgesics, especially oxycodone, enhanced ii) oxidation potential analytes shifted to cathodic direction comparison higher rate. In wider context, propose good quality can be fabricated rapidly industrial scale biosensing purposes. applications should optimized analyte interest.