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Boron doped diamond/metal nanocatalyst hybrid electrode arrays for analytical applications

Emmanuel Scorsone 1 D. Belghiti 1 M. Habchi 1 P. Bergonzo 1
1 LCD-LIST - Laboratoire Capteurs Diamant
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
Abstract : We report on the development of sensor arrays comprising synthetic boron doped diamond (BDD) electrodes modified with metal catalyst nanoparticles. The latter are deposited onto the BDD electrodes surface by a physical vapor deposition process followed by de-wetting under oxygen-free atmosphere in high temperature conditions. The mean size of the particles is in the order of 10 nm, as characterized by scanning electron microscopy (SEM) image processing and small-angle X-ray scattering (SAXS). The particles are made of e.g. platinum, iridium, gold, ruthenium or alloys thereof and showed good adhesion, and good electrochemical reactivity towards a wide range of redox analytes. Sensor arrays composed of 4 BDD electrodes each modified with a different nano-catalyst were mounted and tested for various analytical applications. For instance such a sensor array was able to detect online and discriminate the presence in tap water of the following contaminants: Imidacloprid, Dimethyl methylphosphonate (DMMP) or hydrogen peroxide, chosen for demonstration purpose.
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Submitted on : Wednesday, June 6, 2018 - 3:07:28 PM
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Emmanuel Scorsone, D. Belghiti, M. Habchi, P. Bergonzo. Boron doped diamond/metal nanocatalyst hybrid electrode arrays for analytical applications. 2017 ISOCS/IEEE International Symposium on Olfaction and Electronic Nose (ISOEN), May 2017, Montréal, Canada. pp.7968907, ⟨10.1109/ISOEN.2017.7968907⟩. ⟨cea-01809222⟩



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