Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Dispersion Stability of Rutile TiO2Powder Obtained by Homogeneous Precipitation Process at Low Temperature

저온균일침전법으로 제조된 루틸상 TiO2분말의 분산 안정성

  • 배현숙 (한국원자력연구소 원자력기술개발팀) ;
  • 박순동 (한국원자력연구소 원자력기술개발팀) ;
  • 김흥희 (한국원자력연구소 원자력기술개발팀) ;
  • 이창규 (한국원자력연구소 원자력기술개발팀) ;
  • 김선재 (세종대학교 신소재공학과)
  • Published : 2002.01.01
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Abstract

Dispersion stability of nano-sized rutile TiO$_2$powder with acicular typed primary particle produced by homogeneous precipitation process at low temperatures was studied in aqueous and non-aqueous media in the presence of various electrolytes. The zeta potential measurements have shown that the addition of electrolytes to aqueous and non-aqueous dispersion media leads to charge reversal on TiO$_2$particle surface. The electrostatic repulsive forces acting on between TiO$_2$particles dispersed in non-aqueous media were found to be significantly greater than that in aqueous media, which relate closely to the physical properties of the organic solvents, such as viscosities and dielectric constants. The pH values, the concentration of electrolytes and the valence of the ions have changed greatly the surface potential of TiO$_2$ particles and have governed the dispersion behavior of TiO$_2$particles virtually.

여러 종류의 전해질이 존재할 때, 수계 및 비수계 분산매체에서 저온균일침전법으로 제조된 침상형태의 일차입자를 갖는 나노 크기의 루틸상 TiO$_2$분말에 대한 분산 안정성을 조사하였다. 제타전위 측정은 수계 및 비수계 분산매체에 전해질 첨가가 TiO$_2$입자 표면의 전위 역전을 유발하는 것을 보여주었다. 비수계 분산매체에 분산되어 있는 TiO$_2$입자 사이에 작용하는 정전기적 반발력은 수계 분산매체에서보다 크게 관찰되었고, 이것은 점도, 유전 상수와 같은 유기 용매의 물리적 특성과 밀접한 연관이 있음을 알 수 있었다. pH, 전해질의 농도와 이온의 원자가는 TiO$_2$입자의 표면전위를 크게 변화시켰고, TiO$_2$입자의 분산 거동을 사실상 주도하였다.

Keywords

References

  1. J. Elecrochem. Soc. v.137 no.3 Kinetics of Low-pressure Chemical Vapor Deposition of TiO₂from Titanium Tetraisoproxide K. L. Siefering;Griffin https://doi.org/10.1149/1.2086561
  2. Jpn. J. Appl. Phys. v.25 no.9 Electronic Properties of the Interface between Si and TiO₂Deposited at very Low Temperatures T. Fuyuki;H. Matsunami https://doi.org/10.1143/JJAP.25.1288
  3. Mat. Res. Soc. Symp. v.424 $TiO_2:Ce/CeO_2$ High Performance Insulators for Thin Film Electroluminescent Devices A. Bally;K. Prasad;R. Sanjines;P. E. Schmid;F. Levy;J. Benoit;C. Barthou;P. Benalloul
  4. Jpn. J. Appl. Phys. v.36 Ce-doped TiO₂Insulators in Thin Film Electroluminescent Devices K. Prasad;A. R. Bally;P. E. Schmid;F. Levy;J. Benoit;C. Barthou;P. Benalloul https://doi.org/10.1143/JJAP.36.5696
  5. J. Am. Ceram. Soc. v.64 no.1 Agglomerate and Particle Size Effects on Sintering Yttira-stabilized Zirconia W. H. Rhodes https://doi.org/10.1111/j.1151-2916.1981.tb09552.x
  6. Introduction to the Principles of Ceramic Processing J. S. Reed
  7. J. Colloid Interf. Sci. v.206 Dispersion Stability and Photo-activity of Rutile $(TiO_2)$ Powders A. C. van Dyk;A. M. Heyns https://doi.org/10.1006/jcis.1998.5686
  8. J. Am. Ceram. Soc. v.80 no.9 Colloidal Processing of Silicon Nitride with Poly(Acrylic Acid): I. Asdorption and Electristatic Interations V. A. Hackley https://doi.org/10.1111/j.1151-2916.1997.tb03122.x
  9. Ceram. Int. v.19 Dipersion of Alumina and Silica Powders in Non-aqueous Media: Mixed Solvents Effects B. I. Lee;U. Paik https://doi.org/10.1016/0272-8842(93)90056-W
  10. Colloids Surf. A. v.135 The Effect of Electrostatic Repulsive Forces on the Stability of BaTiO₃Particles Suspended in Non-aqueous Media U. Paik;V. A. Hackley;S. C. Choi;Y. G. Jung https://doi.org/10.1016/S0927-7757(97)00234-3
  11. Colloids Surf. A. v.159 Zeta Potential in Nonaqueous Media: How to Measure and Control Them M. Kosmulski https://doi.org/10.1016/S0927-7757(99)00273-3
  12. J. Kor. Ceram. Soc. v.35 no.4 Preparation of Crystalline TiO₂Ultrafine Powders from Aqueous TiCl₄Solution by Precipitation Method S. J. Kim;C. H. Jung;S. D. Park;S. C. Kwon;S. Park
  13. J. Kor. Ceram. Soc. v.35 no.11 Preparation of Mono-dispersed Ultrafine TiO₂Crystalline Powders by Homogeneous Spontaneous Precipitation from Aqueous TiOCl₂Solution S. J. Kim;S. D. Park;C. J. Jeon;K. H. Kim;H. G. Lee
  14. J. Kor. Ceram. Soc. v.37 no.5 Formation Mechanism of Ultrafine TiO₂Powders from Aqueous TiOCl₂Solution by Homogeneous Precipition Process at Low Temperature S. J. Kim;H. G. Lee;S. D. Park;C. J. Jeon;C. K. Rhee;W. W. Kim;E. G. Lee
  15. United States Patent No. 6001326 Method for Production of Mono-dipersed and Crystalline TiO₂Ultrafine Powders from Aqueous TiOCl₂Solution Using Homogeneous Precipitation S. J. Kim;S. D. Park;K. H. Kim;Y. H. Jeong;I. H. Kuk
  16. Korea Patent No. 224732 Method for Production of Titanium Dioxide Ultrafine Powders S. J. Kim;C. H. Jung;C. K. Rhee;W. W. Kim;I. H. Kuk
  17. Chemistry for Environmental Engineering Basic Concepts from Equilibrium Chemistry C. N. Sawyer;P. L. McCarty
  18. Instruction Manual for Bi-Zeta Zeta Potential Option
  19. Materials Lett. v.44 Adsorption Behaviour of Polyvinyl Pyrrolidone on Oxide Sufaces M. Pattanaik;S. K. Bhaumik https://doi.org/10.1016/S0167-577X(00)00058-6
  20. J. Appl. Chem. Biothecnol. v.26 Effect of Cellulose Fibre Fines on the Retention of Fillers M. J. Jaycock;J. L. Pearson;R. Counter;F. W. Husband
  21. Colloids Surf. A. v.161 An Experimental Study of the Stability of TiO₂Particles in Organic-water Mixtures J. Hsu;Y. Chang https://doi.org/10.1016/S0927-7757(99)00196-X
  22. J. Kor. Inst. Met. Mater. v.39 no.2 Evalution of Metallic Ions Reduction Using Photocatalytic TiO₂Ultrafine Powder Obtained by HPPLT S. J. Kim;S. D. Park
  23. Chemistry for Enviromental Engineering Basic Concepts from Colloid Chemistry C. N. Sawyer;P. L. McCarty
  24. Colloids Surf. A. v.177 Aggregate Size Distributions in Flocculation C. Rattanakawin;R. Hogg https://doi.org/10.1016/S0927-7757(00)00662-2
  25. Fine Particles Science and Technology Zeta Potential of Submicron Titania Particles in Mixed Solvents M. Kosmulski;E. Pelizzetti(ed.)