碳纳米管
阴极
催化作用
氧化还原
聚丙烯酰胺
电极
化学
化学工程
氧气
共聚物
材料科学
高分子化学
无机化学
聚合物
纳米技术
有机化学
物理化学
工程类
作者
Sujeong Kim,Homin Shin,Chang Seok Kang
摘要
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 O 2 reduction current density increased from 0.35 mA/cm 2 to 0.59 mA/cm 2 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.
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