Quantitative analysis of the factors limiting solar power transduction by Synechocystis sp. PCC 6803 in biological photovoltaic devices
Quantitative analysis of the factors limiting solar power transduction by Synechocystis sp. PCC 6803 in biological photovoltaic devices
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DOI：
10.1039/c1ee02531g
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发表时间：
2011-11-01
影响因子：
32.5
通讯作者：
Fisher, Adrian C.
中科院分区：
文献类型：
--
作者：
Bombelli, Paolo;Bradley, Robert W.;Fisher, Adrian C.
燃料电池（FC）和微生物燃料电池（MFC）研究的最新进展表明，这些电化学技术是从化学燃料和有机化合物产生电能的有效方法。这导致了MFC启发的光伏（BPV）设备的开发，该设备通过光合生物的生物活动收集太阳能来产生电力。我们描述了一种具有多个微通道的BPV器件的制造。这允许亚细胞光合细胞器和整个细胞之间的直接比较，以及影响功率输出的参数的定量分析。利用代谢抑制剂DCMU（3-（3，4-二氯苯基）-1，1-二甲基脲）和甲基紫精（1，1 '-二甲基-4，4'-联吡啶二氯化物）研究了光合物质内的电子转移。这些实验表明，在光照下引起功率增加的电子从光系统I的还原端离开光合电子传递链。几个关键因素限制的性能效率，包括光合催化剂的密度，电子载流子浓度，和光强度进行了研究。
Recent advances in fuel cell (FC) and microbial fuel cell (MFC) research have demonstrated these electrochemical technologies as effective methods for generating electrical power from chemical fuels and organic compounds. This led to the development of MFC-inspired photovoltaic (BPV) devices that produce electrical power by harvesting solar energy through biological activities of photosynthetic organisms. We describe the fabrication of a BPV device with multiple microchannels. This allows a direct comparison between sub-cellular photosynthetic organelles and whole cells, and quantitative analysis of the parameters affecting power output. Electron transfer within the photosynthetic materials was studied using the metabolic inhibitors DCMU (3-(3,4-dichlorophenyl)-1,1-dimethylurea) and methyl viologen (1,1'-dimethyl-4,4'-bipyridinium dichloride). These experiments suggest that the electrons that cause an increase in power upon illumination leave the photosynthetic electron transfer chain from the reducing end of photosystem I. Several key factors limiting performance efficiency, including density of the photosynthetic catalyst, electron carrier concentration, and light intensity were investigated.