生物燃料电池的层层自组装的聚合物介导的乳氧气阴极:过氧化的作用
Pablo Scodeller1, Romina Carballo, Rafael Szamocki
1INQUIMAE-DQIAyQF, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina.
Journal of the American Chemical Society
|August 12, 2010
概括
这项研究探讨了Trametes trogii laccase作为生物燃料电池氧气阴极中的生物催化剂. 研究人员发现过氧化 (H2O2) 中介物抑制性能,影响停滞条件下的氧气减少.
科学领域:
- 生物催化剂是一种生物催化剂.
- 生物电化学 生物电化学
- 生物传感器是一种生物传感器.
背景情况:
- 层层自组装的薄膜对于氧气阴极来说是有希望的.
- 奥斯复合体氧化还原继电器对于高效的电子转移至关重要.
- 特拉梅特斯·特罗吉·拉卡斯 (Trametes trogii laccase) 作为一种生物催化剂具有很大的潜力.
研究的目的:
- 研究Trametes trogii laccase作为氧阴极自组装薄膜中的生物催化剂.
- 描述酶薄膜及其电催化活性.
- 阐明过氧化中间体在减少氧气中的作用.
主要方法:
- 在经过修改的金电极上,逐层制造薄膜.
- 使用石英晶体微平衡,圆测量和循环电压测量进行表征.
- 使用旋转盘电极和扫描电化学显微镜 (SECM) 进行电催化研究.
主要成果:
- 成功地组装了乳糖和PAH-O薄膜.
- 检测过氧化 (H2O2) 作为氧气减少中的中间体.
- 在停滞条件下观察到H2O2对生物催化电流和异常极化曲线的抑制作用.
结论:
- H2O2中间体显著影响基于乳糖的氧阴极性能.
- 在停滞条件下的异常电催化行为与H2O2抑制有关.
- 这些发现对于优化生物燃料电池运行至关重要,尤其是在有限的氧气质量运输条件下.
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