123rd General Meeting of the KCS

Type Oral Presentation
Area Oral Presentation of Young Scholars in Electrochemistry
Room No. Room 407+408
Time THU 09:00-09:10
Code ELEC.O-1
Subject Utilization of photosynthetic organisms as photo-biocatalysts for solar energy conversion to electricity
Authors Jinhwan Lee, Sunghyun Kim1,*
Department of Biotechnology, Konkuk University, Korea
1Biotechnology, Konkuk University, Korea
Abstract Recently, there is a growing interest in solar energy conversion studies using photosynthetic organisms such as the thylakoid membranes (TMs), photosystem Ⅱ (PSⅡ), and photosystem Ⅰ (PSⅠ) as photo-biocatalysts. Here we present the novel bio-photoanode system based on the TMs to convert solar energy into electricity. To effectively form the TMs-based composite film on the electrode, the mesoporous graphite electrode capable of functioning as a filter was employed. TMs were introduced and electrically connected to the electrode by the indium tin oxide nanoparticles (ITOnp). The electron transfer between electrode and TMs was improved by the osmium redox polymer (Os-RP), and the enhanced photocurrent of 236 % compared to the TMs/ITOnp film was observed from the TMs/Os-RP/ITOnp film. Under one sun (100 mW cm-2) illumination, the maximum power density of photoelectrochemical cell (PEC) comprised of TMs/Os-RP/ITOnp film photoanode and Pt/C air-cathode is 121.8 ± 9.5 μW cm-2 at the current density of 757.8 ± 29.5 μA cm-2. In this study, the role of the TMs as photo-biocatalysts to convert solar energy was confirmed and the performance of the PEC was improved by effectively introducing TMs into the electrode.
E-mail jinhwan312@gmail.com