Apparent electrocatalysis on 3D nanoporous platinum film electroplated from hexagonal lyotropic liquid crystalline phase of Triton X-100

Silver-Nafion coated cylindrical carbon fiber microelectrode for amperometric monitoring of hydrogen peroxide heterogeneous catalytic decomposition

“…This high area platinum electrode was used as a sensor for anodic amperometric determination of hydrogen peroxide with broad linear range -up to 100 mM (the amperometric response on polished platinum electrode is linear only up to 5 mM). Similar results were obtained by Park et al [10] when octaethylene glycol monohexadecyl ether was replaced by TritonX-100.…”

Mesoporous Materials‐Based Electrochemical Sensors

“…For platinum, this is typically made by recording CV curves in sulfuric acid, via either hydrogen evolution signals or platinum oxides formation/stripping (respectively at ca. −0.2–0.0 V and 0.6–0.9 V, see part A3 in Figure 1), revealing electroactive areas that might be larger than the geometric ones by 2–3 orders of magnitude (roughness factors between 100 and 1000) 74, 79–81. A similar approach can be applied for gold, through the typical anodic formation of gold oxides that are reduced on scan reversal near 1.0 V (see part B2 in Figure 1), in the form of a stripping peak whose integration enables the evaluation of the electroactive gold surface area (390±10 μC cm −2 82), confirming large electroactive areas for mesoporous gold electrodes 83.…”

Electrochemical analysis based on nanoporous structures

“…65 Chung et al introduced a reverse micellar phase to obtain a 3D interconnected nanoporous structure, which can be electroplated to generate even more practical electrodes with a wide range of area, thickness, uniformity, and reliability. 66 Another synthesis strategy employing templates is to utilize porous films such as anodized aluminium oxide or track etched membranes. By chemically or electrochemically reducing metallic precursors onto the surface covered by the nanoporous templates, one can prepare many different nano-structures such Fig.…”