| 초록 |
Currently, a significant portion of H2 produced comes from natural gas through steam methane reforming. And this process stoichiometrically produces 5.5 kg CO2 per kg H2. This implies that we are consuming “dirty” hydrogen. However, the photocatalytic hydrogen production is a promising technology for providing clean and renewable energy source ever since the first discovery of this phenomenon by Honda and Fujishima. For large scale applications, stability of the photocatalyst material is essential. However, many semiconductors which is active for visible light region, particularly sulfides and nitrides showed poor stability. However, g-C3N4 has high chemical and thermal stability besides the high activity under visible light irradiation. But It has an intrinsic problem of recombination. To overcome this problem loading co-catalyst is a common strategy for transfer of electron and thus avoiding the recombination. Herein, g-C3N4 synthesized with various methods was characterized and it’s catalytic performances were evaluated. |
