한국재료학회지 (Korean Journal of Materials Research)

  • 제21권2호
  • /
  • Pages.83-88
  • /
  • 2011
  • /
  • 1225-0562(pISSN)
  • /
  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
권호 표지
DOI QR코드

DOI QR Code

초음파 화학 반응을 이용한 WOx 도핑 TiO2 광촉매 나노 분말의 합성

WOx Doped TiO2 Photocatalyst Nano Powder Produced by Sonochemistry Method

  • Cho, Sung-Hun (Department of Metallurgy and Material Engineering, SunMoonUniversity) ;
  • Lee, Soo-Wohn (Department of Environment Engineering, SunMoonUniversity)
  • 투고 : 2010.06.25
  • 심사 : 2010.12.13
  • 발행 : 2011.02.27
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Nano-technology is a super microscopic technology to deal with structures of 100 nm or smaller. This technology also involves the developing of $TiO_2$ materials or $TiO_2$ devices within that size. The aim of the present paper is to synthesize $WO_x$ doped nano-$TiO_2$ by the Sonochemistry method and to evaluate the effect of different percentages (0.5-5 wt%) of tungsten oxide load on $TiO_2$ in methylene blue (MB) elimination. The samples were characterized using such different techniques as X-ray diffraction (XRD), TEM, SEM, and UV-VIS absorption spectra. The photo-catalytic activity of tungsten oxide doped $TiO_2$ was evaluated through the elimination of methylene blue using UV-irradiation (315-400nm). The best result was found with 5 wt% $WO_x$ doped $TiO_2$. It has been confirmed that $WO_x-TiO_2$ could be excited by visible light (E<3.2 eV) and that the recombination rate of electrons/holes in $WO_x-TiO_2$ declined due to the existence of $WO_x$ doped in $TiO_2$.

키워드

참고문헌

  1. A. K. Axelsson and L. J. Dunne, J. Photochem. Photobiol. Chem., 144, 205 (2001). https://doi.org/10.1016/S1010-6030(01)00536-6
  2. J. Yu, J. C. Yu, M. K. P. Leung, W. Ho, B. Cheng, X. Zhao and J. Zhao, J. Catal., 217, 69 (2003).
  3. Korea institute of science and Technology Information,, Nanosilver, Information Analysis Report, 48, 15 (2004) (in Korean). http://mirian.kisti.re.kr/.
  4. E. A. Neppiras, Physics Report, 61, 159 (1980). https://doi.org/10.1016/0370-1573(80)90115-5
  5. H. G. Flynn, Physical Acoustics, Vol 1 Part B, p. 57-172, ed. W. P. Mason, Academic Press, USA (1964).
  6. F. G. Hammitt, Cavitation and Multiphase Flow Phenomena, p.33-34, Mcgraw-Hill College, USA (1980).
  7. R. W. Thomas, Prod. Finish., 26, 44 (1961).
  8. G. W. Willard, J. Acoust. Soc. Am., 25, 669 (1953). https://doi.org/10.1121/1.1907161
  9. J. David and N. Cheek, Fundmentals and Applications of Ultrasonic Waves, p.30-31, CRC press, USA (2002).
  10. S. H. Cho and S. W. Lee., Kor. J. Mater. Res. 19(3),169 (2009) (in Korean). https://doi.org/10.3740/MRSK.2009.19.3.169