TEMPO-Functionalized Nanoporous Au Nanocomposite for the Electrochemical Detection of H2O2

<div>(a) CVs of electrodes in the absence (A-C) and presence (D-F) of H2O2 (3mM) in N2-saturated 0.1 M PBS (pH = 7.0). Scan rate: 20mVs<svg height="11.6047pt" id="M22" style="vertical-align:-0.04979992pt" version="1.1" viewbox="-0.0498162 -11.5549 6.93682 11.6047" width="6.93682pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0091,0,0,-0.0091,0,-5.741)"><path d="M300 253H71L57 198H286L300 253Z" id="g190-46"></path></g><g transform="matrix(.0091,0,0,-0.0091,3.24,-5.741)"><path d="M311 0V25C221 32 216 41 216 113V635C162 613 103 594 39 583V559L88 556C131 552 135 546 135 500V113C135 41 131 32 40 25V0H311Z" id="g190-213"></path></g></svg>. (A and E) Bare GCE (curves B and F) AuNPs/GCE (curves C and D) np-AuNPs/GCE. (b) CVs of np-AuNPs/GCE in 0.1 M PBS (pH = 7.0) with N2 toward different concentrations of H2O2 over the range of 0.5 μM to 100 μM. Applied potential: 0.55 V. Inset: plot of electrocatalytic current of H2O2 versus its concentrations.</div>

International Journal of Analytical Chemistry

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Figure 4

Figure 4: TEMPO-Functionalized Nanoporous Au Nanocomposite for the Electrochemical Detection of H2O2