| 학회 | 한국재료학회 |
| 학술대회 | 2014년 봄 (05/15 ~ 05/16, 창원컨벤션센터) |
| 권호 | 20권 1호 |
| 발표분야 | C. 에너지/환경 재료(Energy and Environmental Materials) |
| 제목 | Synthesis and characterization of Ag/TiO2 nanoparticle with high photocatalytic activity under simulated visible light |
| 초록 | Silver(Ag)-modified TiO2 nanocomposite particles were synthesized by photochemical deposition process. Characterization of the Ag/TiO2 was performed using field emission-scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV–Vis diffuse reflectance spectroscopy (DRS). It was found that Ag particles were uniformly distributed on the surface of the TiO2 with less than 3 nm in diameter.The photocatalytic activity of Ag/TiO2 nanoparticle composites was investigated using methylene blue (MB) dye solution under simulated visible light. The composite nanoparticles exhibited enhanced visible light-induced photocatalytic activity compared to that of pure TiO2. The enhanced activity is attributed to simultaneous effects of nano-Ag deposits by increasing the absorption capacity in visible region and acting as electron trappers to promote charge separation of photoinduced electrons (e-) and holes (h+). Acknowledgments: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (Grant No. 2013R1A1A2060023). |
| 저자 | Minjeong Ha1, Nattinee Bumbudsanpharoke2, Seonghyuk Ko1 |
| 소속 | 1Department of Packaging, 2Yonsei Univ. |
| 키워드 | silver; TiO2; photochemical deposition; visible light; photocatalyst |
