산수용액에서 처리된 흑연 구조와 열적 특성

송승원; 민의홍; 이동원; 김정수; 오원태; Seung Won Song; Eui Hong Min; Dong Won Lee; Jungsoo Kim; Weontae Oh

Korean Journal of Materials Research, Vol.27, No.2, 113-118, February, 2017

DOI10.3740/MRSK.2017.27.2.113 Export Citation

산수용액에서 처리된 흑연 구조와 열적 특성

Structural and Thermal Characteristics of Graphites Treated in Acidic Solutions

송승원, 민의홍¹, 이동원¹, 김정수², 오원태^†

동의대학교 신소재공학과
¹㈜솔루에타 연구소
²부산대학교병원 의생명R&D센터

Seung Won Song, Eui Hong Min¹, Dong Won Lee¹, Jungsoo Kim², and Weontae Oh^†

Department of Advanced Materials Engineering, Dong-Eui University, Busan 47340, Republic of Korea
¹Research Center, Solueta, Ltd., Kyung-Gi 13493, Republic of Korea
²Biomedical R&D Center, Pusan National University Hospital, Busan 46241, Republic of Korea

E-mail:

Natural and expandable graphites were chemically treated in acidic aqueous solutions such as acetic acid or mixtures of acetic acid and nitric acid. Structures and thermal conductivities of the as-treated graphites were characterized in detail. Both graphites were significantly oxidized in the mixed acidic solution of H2SO4 and HNO3, which condition was generally used for the oxidation of carbon nanotubes. This considerable oxidation of graphites caused a depression of their thermal conductivity. The structural characteristics, obtained by XRD and XPS, show that the graphites treated in the relatively weak acidic conditions (acetic acid or mixture of acetic acid and nitric acid) were quite similar to the untreated graphites. However, the thermal conductivities of both acidic-treated graphites were remarkably increased.

Keywords:thermal conductivity;graphite sheet;acidic aqueous solution

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[2] Lee GW, Kim J, Yoon J, Bae JS, Shin BC, Kim IS, Oh W, Ree M, Thin Solid Films, 516(17), 5781 (2008)

[3] Liu J, Rinzler AG, Dai HJ, Hafner JH, Bradley RK, Boul PJ, Lu A, Iverson T, Shelimov K, Huffman CB, Rodriguez-Macias F, Shon YS, Lee TR, Colbert DT, Smalley RE, Science, 280(5367), 1253 (1998)

[4] Chen YJ, Green MLH, Griffin JL, Hammer J, Lago RM, Tsang SC, Adv. Mater., 8(12), 1012 (1996)

[5] Hummers W, Offeman R, J. Am. Chem. Soc., 80, 1339 (1958)

[6] Lee GW, Kumar S, J. Phys. Chem. B, 109(36), 17128 (2005)

[7] Lee GW, Kim J, Yoon J, Bae JS, Shin BC, Kim IS, Oh W, Ree M, Thin Solid Films, 516(17), 5781 (2008)

[8] Liu J, Rinzler AG, Dai HJ, Hafner JH, Bradley RK, Boul PJ, Lu A, Iverson T, Shelimov K, Huffman CB, Rodriguez-Macias F, Shon YS, Lee TR, Colbert DT, Smalley RE, Science, 280(5367), 1253 (1998)

[9] Chen YJ, Green MLH, Griffin JL, Hammer J, Lago RM, Tsang SC, Adv. Mater., 8(12), 1012 (1996)

[10] Koo M, Bae JS, Shim SE, Kim D, Nam DG, Lee JW, Lee GW, Yeum JH, Oh W, Colloid Polym. Sci., 289, 1503 (2011)

[11] Dreyer DR, Park S, Bielawski CW, Ruoff RS, Chem. Soc. Rev., 39, 228 (2010)

[12] Ferrari AC, Solid State Commun., 143, 47 (2007)

[13] Tuinstra F, Koenig JL, J. Chem. Phys., 53, 1126 (1970)

[14] Lerf A, He HY, Forster M, Klinowski J, J. Phys. Chem. B, 102(23), 4477 (1998)

[15] Szabo LT, Berkesi O, Carbon, 43, 3186 (2005)

[16] Kovtyukhova NI, Wang Y, Berkdemir A, Cruz-Silva R, Terrones M, Crespi VH, Mallouk TE, Nat. Chem., 6, 957 (2014)