Photocurrent production with thermophilic cyanobacterial strain under electrochemical treatment without adding of mediators

Tzu Hsing Ko, Feng Hsiang Chang, Hsin Ta Hsueh, Yung Fu Wang, Chih Ming Su, Li Che Huang, Hsin Chu, Chi Ming Tseng, Dah Tong Ray, Yun Hwei Shen

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A thermophilic cyanobacterial strain, Thermosynechococcus sp. CL-1 (TCL-1) was examined to investigate photocurrent generation under illumination without the adding of artificial mediators in an H-type two-compartment electrolysis cell. Dissolved inorganic carbon (DIC) was used as a nitrogen source at 0.2 V (vs Ag/AgCl). Additionally, cyclic voltammetric experiments were used to verify the presence of oxidative compound excreted from TCL-1. Results indicated that the relationship between photocurrent generation and TCL-1 cell mass is a positive linear. No apparent differences on TCL-1 growth between the case of control and 0.2 V (vs Ag/AgCl) indicated the electron uptake from TCL-1 at 0.2 V has no effect on its growth. The presence of redox compound excreted from TCL-1 is supported through the cyclic voltammetric experiment and plastoqunione, cytochrome b6/f, and plastocyanin between 0.2 and 0.7 V are the most probable mediators in electron transportation.

Original languageEnglish
Pages (from-to)3429-3440
Number of pages12
JournalInternational Journal of Electrochemical Science
Volume13
Issue number4
DOIs
Publication statusPublished - 2018 Apr 1

All Science Journal Classification (ASJC) codes

  • Electrochemistry

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