Towards sustainable H2 evolution by using an algal-electro-photosynthetic process: The mediator selection alternates the electron sources for Chlorella sorokiniana SU-1

Shiue Lin Li, En Ci Liao, Yu Jun Lin, Yun Ju Lu, Yu Sheng Zhang, Yen Tzu Tseng, Yu Jie Jiang, Tzu Hao Chiang, Zhi Xiang Gao, Pei Xuan Li, Jo Shu Chang

研究成果: Article同行評審

摘要

Chlorella sorokiniana SU-1 is employed on the graphite-felt anode of a two-chamber cell connecting potentiostat (+0.4 V vs Ag/AgCl) to study its photoelectrochemical characteristics. Among the mediators selected, the current significantly reached 1.5 mA and 4.0 mA, respectively, when 0.3 mM 2,6-dimethoxy-1,4-benzoquinone and 5.5 mM ferricyanide were spiked. To give significant hydrogen evolution, the applied direct-circuit voltage could be reduced from 2.0 to 1.3 V (producing 1.5 mL-H2 h−1) due to the assistance of the algae-attached anode and platinum-mesh cathode. The current was boosted by spiking 0.2 g L−1 glucose under light/dark conditions. When using ferricyanide as a mediator, the current oscillated under alternating light-on/off conditions, while for 2,6-dimethoxy-1,4-benzoquinone, the increase or decrease of the current was clearly responding to the light going on and off. The microscopic observation of the SU-1 cell attachment indicates successful development by offering adequate illumination and electrode surfaces.

原文English
頁(從 - 到)17409-17419
頁數11
期刊International Journal of Hydrogen Energy
48
發行號46
DOIs
出版狀態Published - 2023 5月 29

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 燃料技術
  • 凝聚態物理學
  • 能源工程與電力技術

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