Nano-Litre Proton/Hydrogen Titration in a Dual-Plate Platinum-Platinum Generator-Collector Electrode Micro-Trench

Feedback‐amplified electrochemical dual‐plate boron‐doped diamond microtrench detector for flow injection analysis

“…The magnitude of the peak current now is given by the internal mass transport which is approximately given by Eq. . …”

Voltammetric mechanistic characterisation of electrode reactions: Distinguishing between chemical instability and fast product diffusion

“…From literature [15] [17]. The diffusion coefficients of the proton H + and hydrogen H 2 , which are approximately 7.8 Â 10 À9 and 5.0 Â 10 À9 m 2 s À1 in aqueous solution [15,18], are 3.2 Â 10 À11 and 5.5 Â 10 À10 m 2 s À1 in [C 2 mim][NTf 2 ] solution [19,20].…”

Boron-doped diamond dual-plate microtrench electrode for generator–collector chloride/chlorine sensing

“…2b, iv) where a noise component in the current response is consistent with transient gas bubble effects. The solubility of hydrogen gas in aqueous media is low [20] but the formation of bubbles takes time and therefore microtrench measurements are possible substantially beyond the solubility limit [9].…”

“…The approximate trench depth is obtained by applying the Nernst diffusion layer model [9] and ignoring edge effects (Eq. (2)).…”

“…Recent applications of dual-plate or microtrench electrodes include femtolitre pH titration [9], ion transport studies [10], pH modulation [11], and analytical detection of dopamine and ascorbate [12] and cysteine/cysteine [13]. A severely limiting factor of current dualelectrodes is surface corrosion and stability under harsh anodic and cathodic potentials.…”