In this study, a microalga Tetraselmis subcordiformis (synonym: Platymonas subcordiformis)based photoanode was prepared by a novel method developed in our lab. The optimal photocurrent density of microalgae photoanode, 37 mu A/cm(2), was achieved under illumination of 145 mu mol s(-1) m(-2) at anode potential of 0.5 V vs Ag vertical bar AgCl vertical bar sat. KCl, immobilized cell density of 2.08 x 10(6)/cm(2) and BQ concentration of 300 mu mol/L. The results of measurements showed that oxygen evolution peak, hydrogen evolution peak and photocurrent response were all synchronous to light impulse in a three-electrode system. It revealed that there occurred a process of photo-bioelectrochemical water-splitting. Hydrogen can be produced by the method. The investigation for whole photo-bioelectrochemical process also indicated that the electrons for hydrogen evolution had two sources, microalgal metabolic process in dark condition and photosynthetic water oxidation. The photo-hydrogen evolution was twice more than hydrogen evolution in dark condition. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Flinders Univ S Australia, Sch Med, Flinders Ctr Marine Bioproc & Bioprod, Adelaide, SA 5042, Australia
Recommended Citation:
Chen, Zhaoan,Lyu, Yanxia,Wang, Kunyuan,et al. Preparation of a microalgal photoanode for hydrogen production by photo-bioelectrochemical water-splitting[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2013,38(29):13045-13049.
