<br>基于金载体上的整体胶体铂和胆红素氧化酶的高效混合生物燃料电池的制造。,Scientific Reports

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基于金载体上的整体胶体铂和胆红素氧化酶的高效混合生物燃料电池的制造。
Scientific Reports ( IF 3.8 ) Pub Date : 2018-Nov-05 , DOI: 10.1038/s41598-018-34740-w
Md Qumrul Hasan ₁ , Robinson Kuis ₁ , J Shankara Narayanan ₁ , Gymama Slaughter ₁

Affiliation

混合生物燃料电池（HBFC）被探索作为非生物和酶生物燃料电池的低成本替代品。在这里，HBFC 提供了一种无酶方法来制造阳极电极，同时采用酶法来制造阴极电极，以开发能量收集平台来为生物电子设备供电。阳极采用胶体铂 (Au-co-Pt) 改性的 250 μm 编织金线和胆红素氧化酶 (BODx) 改性的镀金巴基纸 (BP-Au-BODx) 阴极。 BP 电极的镀金多壁碳纳米管 (MWCNT) 结构的功能化是通过 3-巯基丙酸表面修饰来实现的，使其具有带负电荷的羧基，随后进行 EDC/Sulfo-NHS (1-Ethyl-3- (3-二甲基氨基丙基)碳二亚胺盐酸盐和N-羟基磺基琥珀酰亚胺)与BODx交联。 BODx 和金涂层 MWCNT 的整合评估了生物电催化活性。 Au-co-Pt 和 BP-Au-BODx 对葡萄糖氧化表现出优异的电催化活性，葡萄糖和分子氧还原的线性动态范围分别高达 20 mM。 HBFC 在 3 mM 葡萄糖中表现出优异的性能，最大开路电压为 0.735 V，功率密度为 46.31 μW/cm ² 。此外，以 3 mM 葡萄糖运行的 HBFC 在持续为小型电子设备供电的同时表现出出色的不间断运行稳定性。这些结果为实施这种简单但高效的 HBFC 以在各种医疗和环境应用中收集目标燃料的生化能量提供了绝佳的机会。

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Fabrication of highly effective hybrid biofuel cell based on integral colloidal platinum and bilirubin oxidase on gold support.

A hybrid biofuel cell (HBFC) is explored as a low-cost alternative to abiotic and enzymatic biofuel cells. Here the HBFC provides an enzymeless approach for the fabrication of the anodic electrode while employing an enzymatic approach for the fabrication of the cathodic electrode to develop energy harvesting platform to power bioelectronic devices. The anode employed 250 μm braided gold wire modified with colloidal platinum (Au-co-Pt) and bilirubin oxidase (BODx) modified gold coated Buckypaper (BP-Au-BODx) cathode. The functionalization of the gold coated multi-walled carbon nanotube (MWCNT) structures of the BP electrodes is achieved by 3-mercaptopropionic acid surface modification to possess negatively charged carboxylic groups and subsequently followed by EDC/Sulfo-NHS (1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride and N-Hydroxysulfosuccinimide) crosslinking with BODx. The integration of the BODx and gold coated MWCNTs is evaluated for bioelectrocatalytic activity. The Au-co-Pt and BP-Au-BODx exhibited excellent electrocatalytic activity towards glucose oxidation with a linear dynamic range up to 20 mM glucose and molecular oxygen reduction, respectively. The HBFC demonstrated excellent performance with the largest open circuit voltages of 0.735 V and power density of 46.31 μW/cm² in 3 mM glucose. In addition, the HBFC operating on 3 mM glucose exhibited excellent uninterrupted operational stability while continuously powering a small electronic device. These results provide great opportunities for implementing this simple but efficient HBFC to harvest the biochemical energy of target fuel(s) in diverse medical and environmental applications.

更新日期：2018-11-05

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