Design of a bioelectrocatalytic electrode interface for oxygen reduction in biofuel cells based on a specifically adapted Os-complex containing redox polymer with entrapped Trametes hirsuta laccase
Design of a bioelectrocatalytic electrode interface for oxygen reduction in biofuel cells based on a specifically adapted Os-complex containing redox polymer with entrapped Trametes hirsuta laccase
复制标题
基于包含氧化还原聚合物和包埋栓菌漆酶的专门改造的 Os 复合物，设计用于生物燃料电池中氧还原的生物电催化电极界面
DOI：
10.1016/j.elecom.2010.02.019
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发表时间：
2010
影响因子：
5.4
通讯作者：
W. Schuhmann
中科院分区：
文献类型：
--
作者：
Yvonne Ackermann;D. Guschin;K. Eckhard;S. Shleev;W. Schuhmann
Os-络合物配位壳层的设计及其在电沉积聚合物中的整合使电极和从担子菌Trametes hirsuta捕获高电势漆酶的聚合物之间实现了快速的电子转移。连接在聚合物主链上的OS3+/2+中心的氧化还原电位(+720 mV vs.NHE)与酶的电位(+780 mV vs.NHE)在pH 6.5时完全匹配。将漆酶和Os-络合物修饰的阳极电沉积聚合物同时沉淀在玻碳电极表面，通过pH漂移到2.5。研究了修饰电极对O2生物催化还原为H2O的催化性能。所提出的修饰电极作为生物燃料电池阴极具有潜在的应用前景。
The design of the coordination shell of an Os-complex and its integration within an electrodeposition polymer enables fast electron transfer between an electrode and a polymer entrapped high-potential laccase from the basidiomycete Trametes hirsuta. The redox potential of the Os3+/2+-centre tethered to the polymer backbone (+720mV vs. NHE) is perfectly matching the potential of the enzyme (+780mV vs. NHE at pH 6.5). The laccase and the Os-complex modified anodic electrodeposition polymer were simultaneously precipitated on the surface of a glassy carbon electrode by means of a pH-shift to 2.5. The modified electrode was investigated with respect to biocatalytic O2reduction to H2O. The proposed modified electrode has potential applications as biofuel cell cathode.