초음파 화학 반응을 이용한 WOX 도핑 TiO2 광촉매 나노 분말의 합성

조성훈; 이수완; Sung Hun Cho; Soo Wohn Lee

Korean Journal of Materials Research, Vol.21, No.2, 83-88, February, 2011

DOI10.3740/MRSK.2011.21.2.83 Export Citation

초음파 화학 반응을 이용한 WOX 도핑 TiO2 광촉매 나노 분말의 합성

WOX Doped TiO2 Photocatalyst Nano Powder Produced by Sonochemistry Method

조성훈, 이수완^{1, †}

선문대학교 재료금속공학과
¹선문대학교 환경공학과

Sung Hun Cho, and Soo Wohn Lee^{1, †}

Department of Metallurgy and Material Engineering, SunMoonUniversity, Asan, ChungNam 336-708, Korea
¹Department of Environment Engineering, SunMoonUniversity, Asan, ChungNam 336-708, Korea

E-mail:

Nano-technology is a super microscopic technology to deal with structures of 100 nm or smaller. This technology also involves the developing of TiO2 materials or TiO2 devices within that size. The aim of the present paper is to synthesize WOx doped nano-TiO2 by the Sonochemistry method and to evaluate the effect of different percentages (0.5-5 wt%) of tungsten oxide load on TiO2 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 TiO2 was evaluated through the elimination of methylene blue using UV-irradiation (315-400 nm). The best result was found with 5 wt% WOx doped TiO2. It has been confirmed that WOX-TiO2 could be excited by visible light (E<3.2 eV) and that the recombination rate of electrons/holes in WOX-TiO2 declined due to the existence of WOX doped in TiO2.

Keywords:photocatalyst;sonochemistry;doping;WOX;TiO2

[References]

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Yu JG, Yu JC, Leung MKP, Ho WK, Cheng B, Zhao XJ, Zhao JC, J. Catal., 217(1), 69 (2003)
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Cho SH, Lee SW, Korean J. Mater. Res., 19(3), 169 (2009)

[Referenced By]

[1] Axelsson AK, Dunne LJ, J. Photochem. Photobiol. Chem., 144, 205 (2001)

[2] Yu JG, Yu JC, Leung MKP, Ho WK, Cheng B, Zhao XJ, Zhao JC, J. Catal., 217(1), 69 (2003)

[3] Korea institute of science and Technology Information, Nanosilver, Information Analysis Report, 48, 15 (2004) (in Korean). http://mirian.kisti.re.kr/. (2004)

[4] Neppiras EA, Physics Report, 61, 159 (1980)

[5] Flynn HG, Physical Acoustics, Vol 1 Part B, p. 57-172, ed. Mason WP, Academic Press, USA (1964). (1964)

[6] Hammitt FG, Cavitation and Multiphase Flow Phenomena, p.33-34, Mcgraw-Hill College, USA (1980). (1980)

[7] Thomas RW, Prod. Finish., 26, 44 (1961)

[8] Willard GW, J. Acoust. Soc. Am., 25, 669 (1953)

[9] David J, Cheek N, Fundmentals and Applications of Ultrasonic Waves, p.30-31, CRC press, USA (2002). (2002)

[10] Cho SH, Lee SW, Korean J. Mater. Res., 19(3), 169 (2009)