This study developed a photo-bioelectrochemical cell based on CNT-chlorophylls to produce photocurrent by lighting electrodes in water-based solutions. The extracted chlorophyll from Chlorella vulgaris microalgae was used to modify carbon nanotube (CNT) as a photo-biocatalyst offering low cost and abundant resources. Furthermore, it is an excellent choice as an alternative bioenergy feedstock compared to lignocellulosic material. The physical interactions between the hydrophobic chlorophyll tail and the hydrophobic nature of the CNT induce the hydrophobic interaction. Subsequently, the CNT/chlorophyll photo-biocatalyst ink was deposited on the carbon felt and used as a photo-anode in photo-bioelectrochemical cells. With the introduction of light, the CNT/chlorophyll photo-biocatalyst is capable of generating 6 times higher photo-currents than in the dark. Also, the maximum power density produced by this device was about 9.48 mW/m², which is eleven times greater than the CNT control. Therefore, this analysis is a promising system of generating relatively large amounts of photo-bioelectrochemical current by incorporating biological renewable material of chlorophyll derived from Chlorella vulgaris.

本研究开发了一种基于 CNT-叶绿素的光生物电化学电池，通过在水基溶液中点亮电极来产生光电流。从普通小球藻中提取的叶绿素微藻被用来修饰碳纳米管 (CNT) 作为光生物催化剂，提供低成本和丰富的资源。此外，与木质纤维素材料相比，它是替代生物能源原料的绝佳选择。疏水性叶绿素尾部与 CNT 的疏水性之间的物理相互作用导致疏水性相互作用。随后，将 CNT/叶绿素光生物催化剂墨水沉积在碳毡上，并用作光生物电化学电池中的光阳极。通过引入光，CNT/叶绿素光生物催化剂能够产生比黑暗中高 6 倍的光电流。此外，该设备产生的最大功率密度约为 9.48 mW/m ²，这是 CNT 控制的 11 倍。因此，该分析是一种有前途的系统，通过加入源自普通小球藻的叶绿素生物可再生材料来产生相对大量的光生物电化学电流。