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首页> 外文期刊>Advanced energy materials >Electrically Contacted Bienzyme-Functionalized Mesoporous Carbon Nanoparticle Electrodes: Applications for the Development of Dual Amperometric Biosensors and Multifuel-Driven Biofuel Cells
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Electrically Contacted Bienzyme-Functionalized Mesoporous Carbon Nanoparticle Electrodes: Applications for the Development of Dual Amperometric Biosensors and Multifuel-Driven Biofuel Cells

机译：电接触双酶功能的介孔碳纳米粒子电极：双安培生物传感器和多燃料驱动生物燃料电池的开发应用程序。

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摘要

The capping of electron relay units in mesoporous carbon nanoparticles (MPC NPs) by crosslinking of different enzymes on MPC NPs matrices leads to integrated electrically contacted bienzyme electrodes acting as dual biosensors or as functional bienzyme anodes and cathodes for biofuel cells. The capping of ferrocene methanol and methylene blue in MPC NPs by the crosslinking of glucose oxidase (GOx) and horseradish peroxidase (HRP) yields a functional sensing electrode for both glucose and H2O2, which also acts as a bienzyme cascaded system for the indirect detection of glucose. A MPC NP matrix, loaded with ferrocene methanol and capped by GOx/lactate oxidase (LOx), is implemented for the oxidation and detection of both glucose and lactate. Similarly, MPC NPs, loaded with 2,2′-azino-bis(3-ethylbenzo­thiazoline-6-sulphonic acid), are capped with bilirubin oxidase (BOD) and catalase (Cat), to yield a bienzyme O2 reduction cathode. A biofuel cell that uses the bienzyme GOx/LOx anode and the BOD/Cat cathode, glucose and/or lactate as fuels, and O2 and/or H2O2 as oxidizers is assembled, revealing a power efficiency of ≈90 μW cm−2 in the presence of the two fuels. The study demonstrates that multienzyme MPC NP electrodes may improve the performance of biofuel cells by oxidizing mixtures of fuels in biomass.
机译：通过在MPC NPs基质上交联不同酶，介孔碳纳米颗粒（MPC NPs）中的电子中继单元加帽，导致集成的电接触双酶电极充当双重生物传感器或生物燃料电池的功能性双酶阳极和阴极。通过葡萄糖氧化酶（GOx）和辣根过氧化物酶（HRP）的交联，将MPC NP中的二茂铁甲醇和亚甲基蓝封端，产生了一个功能性的葡萄糖和H2O2传感电极，该电极还用作双酶级联系统，用于间接检测葡萄糖。一个装有二茂铁甲醇并被GOx /乳酸氧化酶（LOx）封端的MPC NP基质可用于氧化和检测葡萄糖和乳酸。类似地，将载有2,2'-叠氮基双（3-乙基苯并­噻唑啉-6-磺酸）的MPC NPs上的胆红素氧化酶（BOD）和过氧化氢酶（Cat）封端，生成双酶O2还原阴极。组装了使用双酶GOx / LOx阳极和BOD / Cat阴极，葡萄糖和/或乳酸盐作为燃料，以及O2和/或H2O2作为氧化剂的生物燃料电池，显示出约90μWcm-2的功率效率。两种燃料的存在。研究表明，多酶MPC NP电极可以通过氧化生物质中燃料的混合物来改善生物燃料电池的性能。

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