Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
권호 표지
DOI QR코드

DOI QR Code

Synthesis and Oil Adsorption Application of Silica Nanopowder from Sulfuric Acid and Sodium Silicate Precursors Using Taylor-vortex Reactor

테일러 와류 반응기를 활용한 황산-물유리 전구체로부터의 실리카 나노 분말의 합성 및 흡유제 응용

  • Jea-Hun Chung (Department of Chemical Engineering and Biotechnology, Tech University of Korea) ;
  • Yea-Young Lee (Department of Chemical Engineering and Biotechnology, Tech University of Korea) ;
  • Quang-Hai Tran (Department of Chemical Engineering and Biotechnology, Tech University of Korea) ;
  • Minjun Lee (Department of Chemical Engineering and Biotechnology, Tech University of Korea) ;
  • Young-Sang Cho (Department of Chemical Engineering and Biotechnology, Tech University of Korea)
  • 정재훈 (한국공학대학교 생명화학공학과) ;
  • 이예영 (한국공학대학교 생명화학공학과) ;
  • 쩐꽝하이 (한국공학대학교 생명화학공학과) ;
  • 이민준 (한국공학대학교 생명화학공학과) ;
  • 조영상 (한국공학대학교 생명화학공학과)
  • Received : 2024.07.02
  • Accepted : 2024.09.04
  • Published : 2024.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

Silica nanoparticles were synthesized by precipitation method using a Taylor vortex reactor from sulfuric acid and water glass as precursor materials. The effects of factors controlling the average particle size of the nanopowders, such as stirring speed and concentration of water glass, were derived from the experimental data, and the differences in average particle size and standard deviation were compared with those of a conventional reactor. It was found that the Taylor vortex reactor can be used to synthesize silica powder with a relatively uniform particle size. Utilizing MTCS, a silane coupling agent, the silica particles were modified to be hydrophobic by replacing the hydroxyl groups on the silica surface with methyl groups, and the surface modification conditions affecting the amount of oil absorption per unit mass of the hydrophobic powder were derived. Particles absorbing 3.14 times more oil per gram of silica powder were prepared, and are expected to be useful in the removal of contaminants.

황산과 전구체 물질인 물유리로부터 테일러 와류 반응기를 활용하여 침전법으로 실리카 나노 입자를 합성하였다. 교반속도, 물유리의 농도 등 나노 분말의 평균 입도를 조절하는 인자들의 영향을 실험 데이터로부터 도출하였으며, 평균입도 및 표준편차의 차이를 기존 반응기를 활용한 경우와 비교할 수 있었다. 테일러 와류 반응기를 사용할 경우, 상대적으로 일정한 입도를 갖는 실리카 분말의 합성이 가능함을 확인하였다. 실란 커플링제인 MTCS를 활용하여 실리카 표면에 존재하는 수산기를 메틸기로 치환하여 실리카 입자를 소수성으로 개질하였으며, 소수성 분말의 단위 질량 당 흡유량에 영향을 미치는 표면 개질 조건을 도출하였다. 실리카 분말 1 g당 최대 3.14배의 오일을 흡유할 수 있는 입자를 제조할 수 있었으며, 오염물의 제거에 유용하게 활용될 수 있을 것으로 기대된다.

Keywords

Acknowledgement

본 연구는 한국연구재단 기본 연구 사업의 연구비 지원(과제번호: RS-2023-00250648)에 의해 수행되었으며, 이에 감사드립니다.

References

  1. Lee, S. H., Shim, K. H. and Jeon, D. H., "Numerical Study on Fluid Flow Characteristics in Taylor Reactor Using Computational Fluid Dynamics," Korean Soc. Mech. Eng. B., 40(1), 9-19(2016).
  2. Kim, W. S., "Application of Taylor Vortex to Crystallization," J. Chem. Eng. Jpn., 47(2), 115-123(2014).
  3. Hur, J. U., Choi, J. S., Choi, S. C. and An, G. S., "Highly Dispersible Fe3O4 Nanoparticles via Anionic Surface Modification," J. Kor. Ceram. Soc., 57, 80-84(2020).
  4. Kai, C. M., Kong, C., Zhang, F. J., Li, D. C., Wang, Y. R. and Oh, W. C., "In Situ Growth of CdS Spherical Nanoparticles/Ti3C2 MXene Nanosheet Heterojunction with Enhanced Photocatalytic Hydrogen Evolution," J. Kor. Ceram. Soc., 59(3), 302-311(2022).
  5. Kumaresan, L., Shanmugavelayutham, G., Surendran, S. and Sim, U., "Thermal Plasma Arc Discharge Method for High-yield Production of Hexagonal AlN Nanoparticles: Synthesis and Characterization," J. Kor. Ceram. Soc., 59(3), 338-349(2022).
  6. Kim, J. Y., Kim, H. S., Lee, N. H., Kim, T. H., Kim, H. S., Yu, T. K., Song, I. C., Moon, W. K. and Hyeon, T. H., "Multifunctional Uniform Nanoparticles Composed of a Magnetite Nanocrystal Core and a Mesoporous Silica Shell for Magnetic Resonance and Fluorescence Imaging and for Drug Delivery," Angew. Chem. Int. Ed. Engl., 47(44), 8438-8441(2008).
  7. Nguyen, H. H., Nguyen, T. T. H., Kim, J. K. and Cho, Y. S., "Synthesis of Silica Nanoparticles from Sodium Silicate and Carbon Dioxide as Reactants," Arch. Metall. Mater., 69, 453-457(2024).
  8. Nguyen, H. H., Park, S. H., Tran, Q. H., Jeong, J. H. and Cho, Y. S., "Synthesis of Silica Nanopowder from Hydrochloric Acid and Potassium Silicate Precursor Using Taylor-vortex Reactor," J. Kor. Ceram. Soc., 61(1), 178-188(2024).
  9. Jung, C. Y., Kim, J. S., Chang, T. S., Kim, S. T., Lim, H. J. and Koo, S. M., "One-step Synthesis of Structurally Controlled Silicate Particles from Sodium Silicates Using a Simple Precipitation Process," Langmuir., 26(8), 5456-5461(2010).
  10. Quarch, K., Durand, E., Schilde, C., Kwade, A. and Kind, M., "Mechanical Fragmentation of Precipitated Silica Aggregates," Chem. Eng. Res. Des., 88(12), 1639-1647(2010).
  11. Cho, Y. S. and Shin, C. H., "Synthesis of Monodisperse Silica Particles using Rotating Cylinder Systems," Korean Chem. Eng. Res., 54(6), 792-799(2016).
  12. Stober, W., Fink, A. and Bohn, E., "Controlled Growth of Monodisperse Silica Spheres in the Micron Size Range," J. Colloid Interface Sci., 26(1), 62-69(1968).
  13. Hench, L. L. and West, J. K., "The Sol-gel Process," Chem. Rev., 90(1), 33-72(1990).
  14. Jal, P. K., Sudarshan, M., Saha, A., Patel, S. and Mishra, B. K., "Synthesis and Characterization of Nanosilica Prepared by Precipitation Method," Colloids Surf. A Physicochem. Eng. Asp., 240(1-3), 173-178(2004).
  15. Gangopadhyay, A. K., Sellers, M. E., Bracker, G. P., Holland-Moritz, D., Van Hoesen, D. C., Koch, S., Galenko, P. K., Pauls, A. K., Hyers, R. W. and K. F. Kelton, K. F., "Demonstration of the Effect of Stirring on Nucleation From Experiments on the International Space Station using the ISS-EML Facility," NPJ Microgravity, 7(31), 1-31(2021).
  16. Choi, J. S. and An, S. J., "The Effect of pH on Synthesis of Nano-Silica Using Water Glass," Korean J. Mater. Res., 25(4), 209-213(2015).
  17. Kim, H. S., "A Study on the Control of Structure Characteristics of Porous Silica," J. Kor. Ins. Chem. Eng., 27(3), 299-308(1989).
  18. Music, S., Filipovic-Vincekovic, N. and Sekovanic, L., "Precipitation of Amorphous SiO2 Particles and Their Properties," Braz. J. Chem. Eng., 28, 89-94(2011).
  19. Joni, I., Rukiah, R. and Panatarani, C., "Synthesis of Silica Particles by Precipitation Method of Sodium Silicate: Effect of Temperature, pH and Mixing Technique," AIP Conf. Proc., 2219(1), (2020).
  20. Martinez, J. R., Palomares-Sanchez, S., Ortega-Zarzosa, G., Ruiz, F. and Chumakov, Y., "Rietveld Refinement of Amorphous SiO2 Prepared via Sol-gel Method," Mater. Lett., 60(29-30), 3526-3529(2006).
  21. Jang, H. J., Chang, M. J., Nam, K. H. and Chung, D. W., "Surface Modification of Nano Silica Prepared by Sol-gel Process and Subsequent Application Towards Gas-barrier Films," Appl. Chem. Eng., 30(1), 68-73(2019).
  22. Song, S. K., Kim, J. H., Hwang, K. S. and Ha, K. R., "Spectroscopic Analysis of Silica Nanoparticles Modified with Silane Coupling Agent," Korean J. Chem. Eng., 49(2), 181-186(2011).
  23. Kurjata, J., Rozga-Wijas, K. and Stanczyk, W., "Investigation of Hydrolysis and Condensation of Methyltriethoxysilane in Aqueous Systems," Eur. J. Chem., 4(4), 343-349(2013).
  24. Chen, K., Li, P., Li, X., Liao, C., Li, X. and Zuo, Y., "Effect of Silane Coupling Agent on Compatibility Interface and Properties of Wheat Straw/polylactic Acid Composites," Int. J. Biol. Macromol., 182, 2108-2116(2021).
  25. Kwok, D. Y. and Neumann, A. W., "Contact Angle Measurement and Contact Angle Interpretation," Adv. Colloid Interface Sci., 81(3), 167-249(1999).
  26. Mahltig, B. and Bottcher, H., "Modified Silica Sol Coatings for Water-repellent Textiles," J. Sol-Gel Sci. Technol., 27(1), 43-52 (2003).