Carbon-stabilized porous silicon as novel voltammetric sensor platforms

The use of carbon-stabilized porous silicon (pSi) as a voltammetric sensing platform able to discriminate the detection various electroactive species with similar redox potentials is demonstrated for first time. For this purpose, responses presence three dihydroxybenzene isomers hydroquinone, catechol and resorcinol were studied using thermally hydrocarbonized pSi (THCpSi) carbonized (TCpSi), well glassy carbon electrode (GCE) benchmark. Both THCpSi TCpSi outperformed electrochemical performance GCE, shown by characterization performed in pair [Fe(CN)6]3-/4-. Cyclic voltammetry results that both exhibited fast electron transfer kinetics, showing slightly improved performance. catalytic enhancement these nanostructures was harnessed allow simultaneous determination resorcinol. analytical differential pulse voltammetry, revealing good reproducibility, high sensitivity, low limits (all below 5 µmol L−1) recoveries (between 98 102%) analysis spiked tap water samples.