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Fully Enzymatic Membraneless GlucoselOxygen Fuel Cell That Provides 0.275 mA cm(-2) in 5 mM Glucose, Operates in Human Physiological Solutions, and Powers Transmission of Sensing Dataстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 11 ноября 2019 г.
- Авторы: Conghaile P.O., Falk M., MacAodha D., Yakovleva M.E., Gonaus C., Peterbauer C.K., Gorton L., Shleev S., Leech D.
- Журнал: Analytical Chemistry
- Том: 88
- Номер: 4
- Год издания: 2016
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 2156
- Последняя страница: 2163
- DOI: 10.1021/acs.analchem.5b03745
- Аннотация: Coimmobilization of pyranose dehydrogenase as an enzyme catalyst, osmium redox polymers [Os(4,4'-dimethoxy-2,2'-bipyridine)(2)(poly(vinylimidazole))(10)Cl](+) or [Os(4,4'-dimethyl-2,2'-bipyridine)(2)(poly-(vinylimidazole))(10)Cl](+) as mediators, and carbon nanotube conductive scaffolds in films on graphite electrodes provides enzyme electrodes for glucose oxidation. The recombinant enzyme and a deglycosylated form, both expressed in Pichia pastoris, are investigated and compared as biocatalysts for glucose oxidation using flow injection amperometry and voltammetry. In the presence of 5 mM glucose in phosphate -buffered saline (PBS) (50 mM phosphate buffer solution, pH 7.4, with 150 mM NaCl), higher glucose oxidation current densities, 0.41 mA cm(-2) are obtained from enzyme electrodes containing the deglycosylated form of the enzyme. The optimized glucose -oxidizing anode, prepared using deglycosylated enzyme coimmobilized with [Os(4,4'-dimethyl-2,2'-bipyridine)(2)(poly(vinylimidazole))(10)Cl](+) and carbon nanotubes, was coupled with an oxygen -reducing bilirubin oxidase on gold nanoparticle dispersed on gold electrode as a biocathode to provide a membraneless fully enzymatic fuel cell. A maximum power density of 275 mu W cm(-2) is obtained in 5 mM glucose in PBS, the highest to date under these conditions, providing sufficient power to enable wireless transmission of a signal to a data logger. When tested in whole human blood and unstimulated human saliva maximum power densities of 73 and 6 mu W cm(-2) are obtained for the same fuel cell configuration, respectively.
- Добавил в систему: Шлеев Сергей Валерьевич