계면활성제를 이용하여 anatase TiO2 나노 입자와 결합된rutile TiO2 분말의 광촉매 특성
Photocatalytic activity of rutile TiO2 powders coupled with anatase TiO2 nanoparticles using surfactant
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The coupling of two semiconducting materials is an efficient method to improve photocatalytic activity via the suppression of recombination of electron-hole pairs. In particular, the coupling between two different phases of TiO2, i.e., anatase and rutile, is particularly attractive for photocatalytic activity improvement of rutile TiO2 because these coupled TiO2 powders can retain the benefits of TiO2, one of the best photocatalysts. In this study, anatase TiO2 nanoparticles are synthesized and coupled on the surface of rutile TiO2 powders using a microemulsion method and heat treatment. Triton X-100, as a surfactant, is used to suppress the aggregation of anatase TiO2 nanoparticles and disperse anatase TiO2 nanoparticles uniformly on the surface of rutile TiO2 powders. Rutile TiO2 powders coupled with anatase TiO2 nanoparticles are successfully prepared. Additionally, we compare the photocatalytic activity of these rutile-anatase coupled TiO2 powders under ultraviolet (UV) light and demonstrate that the reason for the improvement of photocatalytic activity is microstructural.
Abstract
The coupling of two semiconducting materials is an efficient method to improve photocatalytic activity via the suppression of recombination of electron-hole pairs. In particular, the coupling between two different phases of TiO2, i.e., anatase and rutile, is particularly attractive for photocatalytic activity improvement of rutile TiO2 because these coupled TiO2 powders can retain the benefits of TiO2, one of the best photocatalysts. In this study, anatase TiO2 nanoparticles are synthesized and coupled on the surface of rutile TiO2 powders using a microemulsion method and heat treatment. Triton X-100, as a surfactant, is used to suppress the aggregation of anatase TiO2 nanoparticles and disperse anatase TiO2 nanoparticles uniformly on the surface of rutile TiO2 powders. Rutile TiO2 powders coupled with anatase TiO2 nanoparticles are successfully prepared. Additionally, we compare the photocatalytic activity of these rutile-anatase coupled TiO2 powders under ultraviolet (UV) light and demonstrate that the reason for the improvement of photocatalytic activity is microstructural.
참고문헌 (22)
- J. A. Byrne, , Appl. Catal. B, 17, pp.25~ (1998)[DOI]
- Y. Ohko, , Environ. Sci. Technol., 35, pp.2365~ (2001)[DOI]
- Z. Li, , ACS Catal., 4, pp.3273~ (2014)[DOI]
- 이덕희, "TiO2 분말 합성을 위한 Ammonium Hexafluofide Titanate의열적 거동 연구", 한국분말재료학회지, 23(5), pp.353~357 (2016), 한국분말재료학회
- 여인철, "가시광 활성 WO3-TiO2 복합체 광촉매의 제조 및 이의 특성 평가", 한국분말재료학회지, 20(6), pp.474~478 (2013), 한국분말재료학회
- 김지영, "광화학 환원방법을 이용한 Pt@TiO2 나노 복합체 합성", 한국분말재료학회지, 21(2), pp.119~123 (2014), 한국분말재료학회
- 황보영, "초음파 분무 열분해 공정을 이용한 TiOF2 분말의 합성과 광학적 성질", 한국분말재료학회지, 23(4), pp.307~310 (2016), 한국분말재료학회
- 여인철, "탄소나노튜브(CNT)의 첨가에 따른 TiO2의 광촉매 특성 변화 연구", 한국분말재료학회지, 23(6), pp.458~465 (2016), 한국분말재료학회
- W. Zhao, , J. Am. Chem. Soc., 126, pp.4782~ (2004)[DOI]
- P. Viswanalhamurthi, , Inorg. Chem. Commun., 7, pp.679~ (2004)[DOI]
- D. Li, , Nano Lett., 3, pp.555~ (2003)[DOI]
- 김형철, "10 wt%, 20 wt%Li-TiO2 복합분말의 합성과 광촉매 활성평가", 한국분말재료학회지, 23(1), pp.33~37 (2016), 한국분말재료학회
- A. Mills, , J. Photochem. Photobiol. A Chem., 108, pp.1~ (1997)[DOI]
- R. Vogel, , J. Phys. Chem., 98, pp.3183~ (1994)[DOI]
- T. Kawahara, , J. Colloid Interface Sci., 267, pp.377~ (2003)[DOI]
- H. Li, , J. Am. Ceram. Soc., 94, pp.3184~ (2011)[DOI]
- O. Carp, , Prog. in Solid State Chem., 32, pp.33~ (2004)[DOI]
- G. K. Mor, , Sol. Energy Mater. Sol. Cells, 90, pp.2011~ (2006)[DOI]
- M. M. Joshi, , Appl. Catal. A, 357, pp.26~ (2009)[DOI]
- R. Vogel, , J. Phys. Chem., 98, pp.3183~ (1994)[DOI]
- T. H. Wang, , J. Phys. Chem. A, 114, pp.7561~ (2010)[DOI]
- D. Scanlon, , Nat. Mater., 12, pp.798~ (2013)[DOI]