| 초록 |
As promising candidate for energy production technology, PEC (photoelectrochemical) cell using photocatalyst has been intensively studied as promising alternative technology to produce solar fuel energy from fossil fuel energy. BiVO4 (Clinobisvanite) is metal oxide semiconductor that its photocatalytic activity was discovered by Kudo et al as water oxidation photocatalyst. But yet material itself suffers a lot of short comings – slow water oxidation kinetics, low charge separation efficiency (by low conductivity of BiVO4) and difficulty of synthesis. Herein, we present development we have been conducting regarding BiVO4 as light harvesting material for solar energy to fuel conversion. Essential, representative technologies for improving material have been developed – electrocatalyzation, doping and heterojunction will be addressed. Based on such improvements, results such as overall water splitting device and CO2 reduction to CH4 via PEC cell will be also introduced as successful example of application. |
