황산티타늄과 탄소나노튜브로부터 가수분해로 제조된 CNT-TiO2 나노복합체의 광촉매활성

김상진; 정민정; 이영석; Sang Jin Kim; Min-Jung Jung; Young-Seak Lee

Applied Chemistry for Engineering, Vol.21, No.1, 58-62, February, 2010

Export Citation

황산티타늄과 탄소나노튜브로부터 가수분해로 제조된 CNT-TiO2 나노복합체의 광촉매활성

Photo-catalytic Activity of CNT-TiO2 Nano Complex Prepared from Titanium Oxysulfate and Carbon Nanotube by Hydrosis

김상진, 정민정, 이영석 ^†

충남대학교 정밀응용화학과

Sang Jin Kim, Min-Jung Jung, and Young-Seak Lee^†

Department of Fine Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 305-764, Korea

E-mail:

초록

TiOSO4와 다층벽탄소나노튜브(MWCNT)를 사용하여 가수분해법으로 CNT-TiO2 나노복합체를 제조하였다. 제조된 TiO2-CNT 복합체의 CNT는 아나타제 TiO2에 균일하게 분산되어 있으며 MWCNT의 첨가량이 증가함에 따라 결정성 탄소의 비율과 O/Ti 비율이 증가함을 확인할 수 있다. CNT-TiO2복합체의 광활성 및 오염물 흡착능력을 UV 조사 시간에 따른 메틸렌블루의 분해정도로 확인하였다. MWCNT의 비율이 높아질수록 높은 흡착능과 광분해능을 나타내었다. 이는 MWCNT의 높은 비표면적, 산소포함 관능기, 낮은 밴드갭 에너지, 높은 전기전도성, 높은 부피 대 표면적 비율, 균일한 구조 및 특성으로 인하여 CNT-TiO2 복합체의 광활성에 도움을 주는 것으로 보인다.

CNT-TiO2 nano complexes were prepared from TiOSO4 and multi-walled carbon nanotube (MWCNT) by hydrolysis. The CNTs were dispersed uniformly with anatase TiO2 in the prepared TiO2-CNT complexes. The increasing MWCNT ratio leads to increased crystalline carbon and O/Ti ratio. The decomposition degree of methylene blue was experienced according to UV radiation time for study adsorption and photocatalytic activity. The samples having high MWCNT ratio show high adsorption and photodegradation. The high specific surface area, functional group having oxygen, low band gap energy, high electric conductivity, high volume to surface ratio, uniform structure and properties of MWCNT assist photocatalytic activity of CNT-TiO2 complex.

Keywords:titanium dioxide;photocatalyst;carbon nanotubes;complex

[References]

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Puma GL, Bono A, Krishnaiah D, Collin JG, J. Hazard. Mater., 157(2-3), 209 (2008)
Oh WC, Jung AR, Ko WB, Mat. Sci. Eng. C, 29, 1338 (2009)
Wang XJ, Hu ZH, Chen YJ, Zhao GH, Liu YF, Wen ZB, Appl. Surf. Sci., 255(7), 3953 (2009)
Liu YZ, Yang SG, Hong J, Sun C, J. Hazard. Mater., 142(1-2), 208 (2007)
Kominami H, Kumamoto H, Kera Y, Ohtani B, J. Photoch. Photobio. A, 160, 99 (2003)
Wang H, Wang HL, Jiang WF, Li ZQ, Water Res., 43, 204 (2009)
Zhang XW, Lei LC, J. Hazard. Mater., 153(1-2), 827 (2008)
Puma GL, Bono A, Krishnaiah D, Collin JG, J. Hazard. Mater., 157(2-3), 209 (2008)
Sajjad AKL, Shamaila S, Tian BZ, Chen F, Zhang JL, Appl. Catal. B: Environ., 91(1-2), 397 (2009)
Wang W, Serp P, Kalck P, Silva CG, Faria JL, Mater. Res. Bull., 43, 958 (2008)
Sun J, Iwasa M, Gao L, Zhang QH, Carbon, 42, 895 (2004)
Krishna V, Pumprueg S, Lee SH, Zhao J, Sigmund W, Koopman B, Moudgil BM, Process Saf. Environ., 83, 393 (2005)
Peralta-Hernandez JM, Manriquez J, Meas-Vong Y, Rodriuez FJ, Chapman TW, Maldonado MI, Godiez LA, J. Hazard. Mater., 147(1-2), 588 (2007)
Im JS, Yun SM, Lee YS, J. Colloid Interface Sci., 336(1), 183 (2009)
Yun SM, Palanivelu K, Kim YH, Kang PH, Lee YS, J. Ind. Eng. Chem., 14(5), 667 (2008)
Lettmann C, Hildenbrand K, Kisch H, Macyk W, Maier WF, Appl. Catal. B: Environ., 32(4), 215 (2001)
Wang WD, Serp P, Kalck P, Faria JL, J. Mol. Catal. A-Chem., 235(1-2), 194 (2005)

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[2] Puma GL, Bono A, Krishnaiah D, Collin JG, J. Hazard. Mater., 157(2-3), 209 (2008)

[3] Oh WC, Jung AR, Ko WB, Mat. Sci. Eng. C, 29, 1338 (2009)

[4] Wang XJ, Hu ZH, Chen YJ, Zhao GH, Liu YF, Wen ZB, Appl. Surf. Sci., 255(7), 3953 (2009)

[5] Liu YZ, Yang SG, Hong J, Sun C, J. Hazard. Mater., 142(1-2), 208 (2007)

[6] Kominami H, Kumamoto H, Kera Y, Ohtani B, J. Photoch. Photobio. A, 160, 99 (2003)

[7] Wang H, Wang HL, Jiang WF, Li ZQ, Water Res., 43, 204 (2009)

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[9] Puma GL, Bono A, Krishnaiah D, Collin JG, J. Hazard. Mater., 157(2-3), 209 (2008)

[10] Sajjad AKL, Shamaila S, Tian BZ, Chen F, Zhang JL, Appl. Catal. B: Environ., 91(1-2), 397 (2009)

[11] Wang W, Serp P, Kalck P, Silva CG, Faria JL, Mater. Res. Bull., 43, 958 (2008)

[12] Sun J, Iwasa M, Gao L, Zhang QH, Carbon, 42, 895 (2004)

[13] Krishna V, Pumprueg S, Lee SH, Zhao J, Sigmund W, Koopman B, Moudgil BM, Process Saf. Environ., 83, 393 (2005)

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