设计并制造了包含杂化聚(芴-alt-亚苯基)(PFP)/PSII富集膜(BBY)光阳极和胆红素氧化酶(BOD)生物阴极的水-氧-水光合生物电化学电池(PBEC)。在PBEC中,水被分解为氧气,质子,和电子通过PSII在光电阳极上的光依赖性反应,氧气在生物阴极被BOD催化转化为水,形成电子电路并产生电流。在光电阳极,PFP可以同时加速光合水氧化和BBY与电极之间的电子转移。有趣的是,引入PFP后PBEC产生的光电流密度达到1.05±0.01μA/cm2,是BBY电极的2.5倍,表明共轭聚合物可以增强PBEC的光电响应。
A water-oxygen-water photosynthetic bioelectrochemical cell (PBEC) comprising hybrid poly(fluorene-alt-phenylene) (PFP)/PSII-enriched membranes (BBY) photoanode and bilirubin oxidase (BOD) biocathode has been designed and fabricated. In the PBEC, water is split into oxygen, protons, and electrons through light-dependent reaction of PSII at the photoanode, and oxygen is converted into water catalyzed by BOD at the biocathode, forming the electronic circuit and generating current. At the photoanode, PFP can simultaneously accelerate the photosynthetic water oxidation and the electron transfer between BBY and electrode. Interestingly, the photocurrent density produced by PBEC after the introduction of PFP reaches 1.05 ± 0.01 μA/cm2, which is 2.5 times more than that of the BBY electrode, indicating that conjugated polymer can enhance the photoelectric response of PBEC.