Electroanalysis using macro-, micro-, and nanochemical architectures on electrode surfaces. Bulk surface modification of glassy carbon microspheres with gold nanoparticles and their electrical wiring using carbon nanotubes.

摘要: Gold nanoparticles (∼30−60 nm in diameter) were deposited onto the surface of glassy carbon microspheres (10−20 μm) through electroless plating to produce bulk (i.e., gram) quantities nanoparticle surface-modified microspheres. The gold nanoparticle-modified powder was then characterized by means scanning electron microscopy and cyclic voltammetry. voltammetric response a macroelectrode consisting film microspheres, bound together “wired-up” using multiwalled nanotubes (MWCNTs), investigated. We demonstrate that intelligently exploiting both nano- microchemical architectures wiring up electroactive centers MWCNTs this way, we can obtain behavior while only ∼1% mass expensive material would be required construct equivalent macrodisk electrode. potential utility electrodes constructed chemical such as d...