Investigation on electron transfer from spinach thylakoids to modified electrodes in a photosynthetic electrochemical cell
Herlina Arianita Dewi
Date of Issue2014
School of Chemical and Biomedical Engineering
Photosynthesis is a process in which water and carbon dioxide are converted into carbohydrate by using light as catalyst. Water is split into oxygen, hydrogen, and electron by the manganese center. The generated electrons can be transferred to conducting electrode and results in photocurrent generation in the photosynthetic electrochemical cell (PEC). In this study, we will use isolated spinach thylakoids as biocatalyst. Investigation on indium tin oxide (ITO) and carbon electrodes to harness the generated electrons is the main focus in this work. In summary, we show the proof of biocompatible interaction and electron transfer between isolated thylakoids and various conducting electrodes. The generated bi-directional photocurrent indicates that the direction of electron transfer can be tuned depending on different treatments, such as potentials applied and the presence of redox mediators. The overall results of this study suggests the photosynthesis reaction is capable of generating electricity.