| 학회 | 한국화학공학회 |
| 학술대회 | 2014년 가을 (10/22 ~ 10/24, 대전 DCC) |
| 권호 | 20권 2호, p.2339 |
| 발표분야 | 환경 |
| 제목 | Photocatalytic Organic Dye Bleaching using Modified Graphitic Carbon Nitride (g-C3N4) |
| 초록 | Removing pollutants from water is important to maintaining clean environment and eco system. Among various technologies, water purification using photocatalyst is easy and simple to handle, and able to use sunlight directly. The most widely used photocatalyst is TiO2 powder which is cheap, but e-h+ pairs separation occurred mostly under UV light irradiation which is hard to utilize long wavelength region even sunlight consist with large portion of above wavelength of visible light. To utilize sunlight properly, photocatalyst have to be adsorbed long wavelength light and generate e-h+ pairs. Herein, a polymer photocatalyst synthesized from co-polymerization of precusors, g-C3N4 were developed to degrade organic dye (RhB). The nanostructured g-C3N4 can enhance its photocatalytic activity due to its thin layer which is reduced electron and hole recombination. Moreover C/N ratio regulated g-C3N4 can remove organic dye much faster than non-structure, structured g-C3N4 and TiO2 nanoparticle under visible light irradiation (＞420nm). The chemical composition regulation make red shift of energy band of g-C3N4. Unlike sulfide and oxynitride semiconductor, g-C3N4 is stable under light irradiation. The high stability and moderate band gap imply that g-C3N4 has numerous potential application in the photocatalyst field. |
| 저자 | 이선욱, 이은주, 전영시, 장용근, 홍원희 |
| 소속 | KAIST |
| 키워드 | photocatalyst; graphitic carbon nitride; organic dye bleaching |
| 원문파일 | 초록 보기 |
