The wired laccase cathode with the incorporation of single‐walled carbon nanotubes (SWNTs) functionalized with carboxyl groups was constructed. As the wiring redox polymer, the copolymer of polyacrylamide and poly(N‐vinylimidazole) complexed with [Os(2,2′;6′2″‐terpyridine)(4,4′‐dimethyl‐2,2′‐bipyridine)]^2+/3+ (PAA‐PVI‐[Os(tpy)(dme‐bpy)₂]^2+/3+) was used. The prepared laccase cathode was applied for the electrocatalytic reduction of oxygen. With the addition of the carboxylated carbon nanotubes (CNT‐COOHs), in comparison to the result with no CNT‐COOHs included, the catalytic O₂ reduction current density increased from 0.35 mA/cm² to 0.59 mA/cm² at the cathode under the condition of a 500 rpm electrode rotation speed in an air‐saturated pH 5.0 2.0 M citrate buffer at 37°C. Other effects showing less current decreases with halide ion additions and enhanced stability, when CNT‐COOHs were included, were also observed.

中文翻译：

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带有羧基化单壁碳纳米管的有线漆酶氧阴极

构造了带有漆成羧基的单壁碳纳米管（SWNT）的有线漆酶阴极。作为布线氧化还原聚合物，聚丙烯酰胺和聚N-乙烯基咪唑的共聚物与[Os（2,2'; 6'2″-吡啶）（4,4'-二甲基-2,2'-联吡啶）络合]^{使用2 + / 3 +}（PAA-PVI- [Os（tpy）（dme-bpy）₂ ] ^{2 + / 3 +}）。制备的漆酶阴极用于电催化还原氧。与不包含CNT-COOH的结果相比，添加了羧化碳纳米管（CNT-COOH），催化O ₂还原电流密度从0.35 mA / cm ²增加到0.59 mA / cm ²在37°C的空气饱和pH 5.0 2.0 M柠檬酸盐缓冲液中，在500 rpm电极转速的条件下，在阴极处将其置于阴极。当包括CNT-COOHs时，还观察到其他效应，表明随着卤离子的加入，电流减小的幅度减小，稳定性增强。