대구경 실리카 입자를 이용한 실리카/티타니아 코어-쉘 입자의 제조

박영훈; 이재원; 공성민; 김우식; 김진수; Young-Hun Park; Jae-Won Lee; Sungmin Gong; Woo-Sik Kim; Jinsoo Kim

Journal of the Korean Industrial and Engineering Chemistry, Vol.18, No.2, 183-187, April, 2007

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대구경 실리카 입자를 이용한 실리카/티타니아 코어-쉘 입자의 제조

Preparation of SiO2/TiO2 Core-Shell Particles Using Large-Size Silica Particles

박영훈, 이재원, 공성민, 김우식 , 김진수 ^†

경희대학교 환경ㆍ응용화학대학

Young-Hun Park, Jae-Won Lee, Sungmin Gong, Woo-Sik Kim , and Jinsoo Kim^†

College of Environment & Applied Chemistry, Kyunghee University, Gyeonggi-do 449-701, Korea

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초록

대구경 실리카 입자를 사용하여 실리카/티타니아 코어-쉘 입자를 제조하였으며, 반복 코팅에 의해 티타니아 코팅 층의 두께를 조절하였다. 티타니아 코팅층의 두께는 코팅횟수를 1회에서 3회로 늘림에 따라 8 nm에서 38 nm로 증가하였다. 코팅 후 입자의 표면은 티타니아 코팅 층으로 인해 거칠어 졌으며 비표면적도 3∼25배 증가하였다. 티타니아가 코팅된 실리카 입자의 특성은 FE-SEM, 제타전위기, BET, XRD 등을 이용해 분석하였다.

SiO2/TiO2 core-shell particles with controlled shell thickness were prepared using large silica particles. The thickness of titania coating layer was varied from 8 nm to 38 nm depending on the number of coating steps from 1 to 3 times. After titania coating, the core-shell particles showed textured surface due to the titania coating layer, resulting in 3∼25 times increase of specific surface areas. The properties of titania coated silica particles were characterized by FE-SEM, Zeta potential meter, BET, and XRD.

Keywords:Sol-gel;titania;silica;core-shell;coating

[References]

Komarneni S, Abothu IR, Rao AVP, J. Sol-Gel Sci. Technol., 15, 263 (1999)
Alemany LJ, Banares MA, Pardo E, Martin F, J. Adv. Oxid. Tech., 3, 155 (1998)
Koo SM, Lee DH, Ryu CS, Lee YE, J. Korean Ind. Eng. Chem., 8(2), 301 (1997)
Cheng P, Zheng MP, Jin YP, Huang Q, Gu MY, Mater. Lett., 57, 2989 (2003)
Quaranta NE, Soria J, Corberan VC, Fierro JL, J. Catal., 171(1), 1 (1997)
Fu XA, Qutubuddin S, Colloids Surf. A: Physicochem. Eng. Asp., 178, 151 (2001)
Hsu WP, Yu R, Matijevic E, J. Colloid Interface Sci., 156, 56 (1993)
Hanprasopwattana A, Srinivasan S, Sault AG, Datye AK, Langmuir, 12(13), 3173 (1996)
Kim KD, Bae HJ, Kim HT, Colloids Surf. A: Physicochem. Eng. Asp., 224, 119 (2003)
Lee JW, Hong K, Kim WS, Kim J, J. Ind. Eng. Chem., 11(4), 609 (2005)
Stober W, Fink A, Bohn E, J. Colloid Interface Sci., 26, 62 (1968)
Hong K, MS Thesis, Kyung Hee Univ., Seoul, Korea (2005)
Sing KSW, Everett DH, Haul RAW, Moscou L, Pierotti RA, Rouquerol J, Siemieniewska T, Pure Appl. Chem., 57, 603 (1985)

[Related Articles]

[1] Komarneni S, Abothu IR, Rao AVP, J. Sol-Gel Sci. Technol., 15, 263 (1999)

[2] Alemany LJ, Banares MA, Pardo E, Martin F, J. Adv. Oxid. Tech., 3, 155 (1998)

[3] Koo SM, Lee DH, Ryu CS, Lee YE, J. Korean Ind. Eng. Chem., 8(2), 301 (1997)

[4] Cheng P, Zheng MP, Jin YP, Huang Q, Gu MY, Mater. Lett., 57, 2989 (2003)

[5] Quaranta NE, Soria J, Corberan VC, Fierro JL, J. Catal., 171(1), 1 (1997)

[6] Fu XA, Qutubuddin S, Colloids Surf. A: Physicochem. Eng. Asp., 178, 151 (2001)

[7] Hsu WP, Yu R, Matijevic E, J. Colloid Interface Sci., 156, 56 (1993)

[8] Hanprasopwattana A, Srinivasan S, Sault AG, Datye AK, Langmuir, 12(13), 3173 (1996)

[9] Kim KD, Bae HJ, Kim HT, Colloids Surf. A: Physicochem. Eng. Asp., 224, 119 (2003)

[10] Lee JW, Hong K, Kim WS, Kim J, J. Ind. Eng. Chem., 11(4), 609 (2005)

[11] Stober W, Fink A, Bohn E, J. Colloid Interface Sci., 26, 62 (1968)

[12] Hong K, MS Thesis, Kyung Hee Univ., Seoul, Korea (2005)

[13] Sing KSW, Everett DH, Haul RAW, Moscou L, Pierotti RA, Rouquerol J, Siemieniewska T, Pure Appl. Chem., 57, 603 (1985)