화학공학소재연구정보센터
학회 한국재료학회
학술대회 2008년 가을 (11/07 ~ 11/07, 차세대융합기술연구원)
권호 14권 2호
발표분야 나노생체재료
제목 Synthesis and photocatalytic activity of Ag spot-coated TiO2-SrO composite powders
초록 Nano-sized TiO2-60wt% SrO composite powders were synthesized by a sol-gel method using titianium isopropoxide and Sr(OH)2·8H2O as precursors. 3, -5, -7wt%Ag spot-coated TiO2-60wt% SrO composite powders were synthesized by a Ag electroless deposition method using the TiO2-60wt% SrO composite powders calcined at 1050 oC. The TiO2-60wt% SrO composite powders calcined at 1050 oC were mainly exhibited the SrTiO3 phase. However, small number of rutile TiO2, Sr2TiO4 and SrO2 phases were detected. In the Ag spot-coated TiO2-SrO composite powders synthesized by a electroless deposition method, nano-sized particles about 5-25 nm in diameter adhered to the TiO2-60wt% SrO composite powders. The photocatalytic activity of Ag spot-coated TiO2-SrO and TiO2-SrO composite powders for degradation of phenol showed that all of TiO2-SrO composite powders were high active under UV light irradiation. 7wt%Ag spot-coated TiO2-60wt.%SrO composite powders were a relatively higher photocatalytic activity than that of TiO2-SrO composite powders under visible light.
저자 Jae-Kil Han1, Sung-Chang Choi1, In-Chul Kang1, Won-Seok Hong2, Jae-Kil Han1
소속 1Songdo Techno Park, 2Korea Institute of Machinery and Materials
키워드 Nanoparticle; Photoactivity; Sol-gel method
E-Mail jkhan@step.or.kr