| 摘要 |
An enzymatic hydrogen production apparatus for water decomposition using an anodized tubular TiO2 electrode, a solar cell, and a nanofiltration membrane is provided to produce hydrogen economically using sunlight by applying a solar cell and the nanofiltration membrane used as an ion bridge, thereby maximizing the hydrogen generation efficiency. A hydrogen production apparatus(1) for water decomposition comprises an anodized TiO2 electrode(13), an anode electrolyte(14), a cathode(15), a cathode electrolyte(16), a nanofiltration membrane(17), and a solar cell(18). The anodized TiO2 electrode is formed by integrally and densely laying up titania(13B) as a transition metal oxide layer in a tubular shape on the surface of a metal titanium support, thereby bonding the titania as the transition metal oxide layer to the surface of the metal titanium support. The anode electrolyte has the anodized TiO2 electrode immersed thereinto. The cathode is formed of metal having corrosiveness with respect to an acidic or alkaline solution. The cathode electrolyte has the cathode immersed thereinto. The cathode electrolyte is a mixed solution of a buffer solution with a pH range of 7 to 10, an electron carrier, and an enzyme. The nanofiltration membrane is connected to both end portions of the anode electrolyte and cathode electrolyte to provide a moving passage of ions between two solutions. The solar cell connects the anodized TiO2 electrode and cathode.
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