A Sans Study of Microemulsions in the Pseudoternary Aerosol OT/Cyclohexane/Aqueous AgNO3 Solution and Formation of Silver Nanoparticles in Microemulsions

Hong-Un Kim; Jin-Kyu Lee; Kyung-Hee Lim

Journal of Industrial and Engineering Chemistry, Vol.11, No.2, 210-214, March, 2005

Hong-Un Kim, Jin-Kyu Lee¹, and Kyung-Hee Lim^{1, †}

Department of Applied Chemistry, Dongyang Technical College, Seoul 152-714, Korea
¹Department of Chemical Engineering, Chung-Ang University, Seoul 156-756, Korea

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This article deals with an investigation on the phase behavior of the pseudoternary AOT/cyclohexane/aqueous 0.2 M AgNO3 solution and features of its water-in-oil (W/O) microemulsions (MEs). The sizes and structures indicative of water pools in the microemulsions were determined by small-angle neutron scattering (SANS). SANS spectra indicated that water pools of spheres with sizes 4~10 nm and of cylinders with lengths of 25~30 nm were formed at four different compositions inside the microemulsion region. Silver nanoparticles were prepared with the microemulsions and identified by the peaks at a wavelength of 400 nm in their UV/Vis absorption spectra. TEM micrographs showed that the silver nanoparticles were spherical and rod-like, depending on the compositions of the microemulsions and reflecting the sizes and shapes of the water pools.

Keywords:phase diagram;microemulsion (ME);water pool;small-angle neutron scattering (SANS)

[References]

Pileni MP, in Structure and Reactivity in Reverse Micelles, Elsevier, Amsterdam (1989)
Arcoleo V, Goffredi M, Liveri VT, J. Colloid Interface Sci., 198(2), 216 (1998)
Eastoe J, Towey TF, Robinson BH, Williams J, Heenan RH, J. Phys. Chem., 97, 1459 (1993)
Dixit SG, Mahadeshwar AR, Haram SK, Colloids Surf. A: Physicochem. Eng. Asp., 133, 69 (1998)
Kim HU, Lim KY, J. Kor. Oil Chem. Soc., 19, 145 (2002)
Lee MS, Lee GD, Park SS, Hong SS, J. Ind. Eng. Chem., 9(1), 89 (2003)
Griffiths PC, Stilbs P, Paulsen K, Howe AM, Pitt AR, J. Phys. Chem. B, 101(6), 915 (1997)
Almgren M, Gimel JC, Wang K, Karlsson G, Edwards K, Brown W, Mortensen K, J. Colloid Interface Sci., 202(2), 222 (1998)
King SM, in Introduction to Small Angle Neutron Scattering, http://www.isis.rl.ac.kr/largescale/loq/documents/sans.htm (2000)
Korea Atomic Energy Research Institute, In Computing Guide for Hanaro Small-Angle Neutron Scattering Data Treatment (2002)
Guinier A, Fournet G, in Small-Angle Scattering of X-Rays, John Wiley & Sons, New York (1955)
Feigin LA, Svergun DI, in Structure Analysis by Small-Angle X-Ray and Neutron Scattering, G.W. Taylor Ed., Plenum Press, New York (1987)
Porod G, in Small-Angle X-Ray Scattering, O. Glatter and O. Kratky Eds., p. 17, Academic Press, New York (1982)
Pedersen JS, Egelhaaf SU, Schurtenberger P, J. Phys. Chem., 99, 1299 (1993)
Lin MY, Hanley HJM, Sinha SK, Straty GC, Peiffer DG, Kim MW, Physica B, 213, 613 (1995)
Holtzer A, J. Polym. Sci., 17, 432 (1955)
Denkinger P, Burchard W, J. Polym. Sci. B: Polym. Phys., 29, 589 (1991)
Moran PD, Bartlett JR, Bowmaker GA, Woolfrey JL, Cooney RP, J. Sol-Gel Sci. Technol., 15, 251 (1999)
Eastoe J, Robinson BH, Steytler DC, Thorn-Leeson D, Adv. Colloid Interface Sci., 36, 1 (1991)
Pileni MP, Zemb T, Petit C, Chem. Phys. Lett., 118, 414 (1985)
Eastoe J, Robinson BH, Visser JWG, Steytler DC, J. Chem. Soc.-Faraday Trans., 87, 1899 (1991)
Eastoe J, Fragneto G, Robinson BH, Towey HF, Heenan RK, Leng FJ, J. Chem. Soc.-Faraday Trans., 88, 461 (1992)
Barnickel P, Wokaun A, Sager W, Eicke HF, J. Colloid Interface Sci., 148, 80 (1992)
Bagwe RP, Khilar KC, Langmuir, 16(3), 905 (2000)
Liu Y, Liu CY, Chen LB, Zhang ZY, J. Colloid Interface Sci., 257(2), 188 (2003)
Lim KH, manuscript in preparation (2004)

[Referenced By]

[Related Articles]

[1] Pileni MP, in Structure and Reactivity in Reverse Micelles, Elsevier, Amsterdam (1989)

[2] Arcoleo V, Goffredi M, Liveri VT, J. Colloid Interface Sci., 198(2), 216 (1998)

[3] Eastoe J, Towey TF, Robinson BH, Williams J, Heenan RH, J. Phys. Chem., 97, 1459 (1993)

[4] Dixit SG, Mahadeshwar AR, Haram SK, Colloids Surf. A: Physicochem. Eng. Asp., 133, 69 (1998)

[5] Kim HU, Lim KY, J. Kor. Oil Chem. Soc., 19, 145 (2002)

[6] Lee MS, Lee GD, Park SS, Hong SS, J. Ind. Eng. Chem., 9(1), 89 (2003)

[7] Griffiths PC, Stilbs P, Paulsen K, Howe AM, Pitt AR, J. Phys. Chem. B, 101(6), 915 (1997)

[8] Almgren M, Gimel JC, Wang K, Karlsson G, Edwards K, Brown W, Mortensen K, J. Colloid Interface Sci., 202(2), 222 (1998)

[9] King SM, in Introduction to Small Angle Neutron Scattering, http://www.isis.rl.ac.kr/largescale/loq/documents/sans.htm (2000)

[10] Korea Atomic Energy Research Institute, In Computing Guide for Hanaro Small-Angle Neutron Scattering Data Treatment (2002)

[11] Guinier A, Fournet G, in Small-Angle Scattering of X-Rays, John Wiley & Sons, New York (1955)

[12] Feigin LA, Svergun DI, in Structure Analysis by Small-Angle X-Ray and Neutron Scattering, G.W. Taylor Ed., Plenum Press, New York (1987)

[13] Porod G, in Small-Angle X-Ray Scattering, O. Glatter and O. Kratky Eds., p. 17, Academic Press, New York (1982)

[14] Pedersen JS, Egelhaaf SU, Schurtenberger P, J. Phys. Chem., 99, 1299 (1993)

[15] Lin MY, Hanley HJM, Sinha SK, Straty GC, Peiffer DG, Kim MW, Physica B, 213, 613 (1995)

[16] Holtzer A, J. Polym. Sci., 17, 432 (1955)

[17] Denkinger P, Burchard W, J. Polym. Sci. B: Polym. Phys., 29, 589 (1991)

[18] Moran PD, Bartlett JR, Bowmaker GA, Woolfrey JL, Cooney RP, J. Sol-Gel Sci. Technol., 15, 251 (1999)

[19] Eastoe J, Robinson BH, Steytler DC, Thorn-Leeson D, Adv. Colloid Interface Sci., 36, 1 (1991)

[20] Pileni MP, Zemb T, Petit C, Chem. Phys. Lett., 118, 414 (1985)

[21] Eastoe J, Robinson BH, Visser JWG, Steytler DC, J. Chem. Soc.-Faraday Trans., 87, 1899 (1991)

[22] Eastoe J, Fragneto G, Robinson BH, Towey HF, Heenan RK, Leng FJ, J. Chem. Soc.-Faraday Trans., 88, 461 (1992)

[23] Barnickel P, Wokaun A, Sager W, Eicke HF, J. Colloid Interface Sci., 148, 80 (1992)

[24] Bagwe RP, Khilar KC, Langmuir, 16(3), 905 (2000)

[25] Liu Y, Liu CY, Chen LB, Zhang ZY, J. Colloid Interface Sci., 257(2), 188 (2003)

[26] Lim KH, manuscript in preparation (2004)