Center for Bioenergy and Photosynthesis, and Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA.
Dalton Trans. 2009 Dec 7(45):9979-89. doi: 10.1039/b912170f. Epub 2009 Oct 15.
A photoelectrochemical biofuel cell has been developed which incorporates aspects of both an enzymatic biofuel cell and a dye-sensitized solar cell. Photon absorption at a porphyrin-sensitized n-type semiconductor electrode gives rise to a charge-separated state. Electrons and holes are shuttled to appropriate cathodic and anodic catalysts, respectively, allowing the production of electricity, or a reduced fuel, via the photochemical oxidation of a biomass-derived substrate. The operation of this device is reviewed. The use of alternate anodic redox mediators provides insight regarding loss mechanisms in the device. Design strategies for enhanced performance are discussed.
已经开发出一种光电化学生物燃料电池，它结合了酶生物燃料电池和染料敏化太阳能电池的特点。在卟啉敏化的 n 型半导体电极上的光子吸收会产生电荷分离态。电子和空穴分别被输送到适当的阴极和阳极催化剂，从而允许通过生物质衍生底物的光化学氧化来产生电力或还原燃料。本文综述了该装置的工作原理。使用替代的阳极氧化还原介体提供了有关设备中损耗机制的见解。讨论了提高性能的设计策略。
