유기물자원화 (Journal of the Korea Organic Resources Recycling Association)

  • 제31권1호
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  • Pages.47-56
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  • 2023
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  • 1225-6498(pISSN)
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  • 2508-3015(eISSN)
유기성자원학회 (Korea Organic Resources Recycling Association)
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상수, 공업용수, 및 하천수를 활용한 균일한 실리카 나노입자 합성 및 전기감응형 스마트유체로의 응용

Synthesis of Uniform Silica Nanoparticles using Tap, Industrial, and Stream water and Their Application to Electro-responsive Smart Fluid System

  • 김하영 (한밭대학교 화학생명공학과) ;
  • 제갈석 (한밭대학교 화학생명공학과) ;
  • 이능히 (한밭대학교 화학생명공학과) ;
  • 사민기 (한밭대학교 화학생명공학과) ;
  • 김동현 (한밭대학교 화학생명공학과) ;
  • 김민상 (한밭대학교 화학생명공학과) ;
  • 김지원 (한밭대학교 화학생명공학과) ;
  • 윤창민 (한밭대학교 화학생명공학과)
  • Ha-Yeong Kim (Department of Chemical and Biological Engineering, Hanbat National University) ;
  • Suk Jekal (Department of Chemical and Biological Engineering, Hanbat National University) ;
  • Neunghi Lee (Department of Chemical and Biological Engineering, Hanbat National University) ;
  • Minki Sa (Department of Chemical and Biological Engineering, Hanbat National University) ;
  • Dong Hyun Kim (Department of Chemical and Biological Engineering, Hanbat National University) ;
  • Min Sang Kim (Department of Chemical and Biological Engineering, Hanbat National University) ;
  • Jiwon Kim (Department of Chemical and Biological Engineering, Hanbat National University) ;
  • Chang-Min Yoon (Department of Chemical and Biological Engineering, Hanbat National University)
  • 투고 : 2023.02.16
  • 심사 : 2023.03.05
  • 발행 : 2023.03.30
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초록

본 연구에서는 증류수를 사용하지 않고 상수, 공업용수 및 하천수를 활용하여 균일한 실리카 나노입자를 성공적으로 제조하는 방법에 대해 제시하였다. 또한, 제조된 실리카 나노입자들은 전기감응형 스마트유체의 분산 물질로 적용하였다. 상세히는, 다양한 종류의 물을 사용하여 500-700nm 사이즈의 실리카 나노입자를 한 번의 실험으로 대량 제조(약 12.0g) 하였으며 증류수를 활용하여 합성한 750nm 사이즈의 실리카 나노입자와 동일한 형태학적 화학적 특성을 가지고 있음을 확인하였다. 다양한 물을 사용하여 제조한 실리카 나노입자의 사이즈는 이온전도도에 따라 변화하였다. 이온전도도가 높으면 높을수록 제조된 실리카 나노입자의 크기가 작아짐을 확인할 수 있었고, 이는 이온들이 실리카 나노입자의 성장을 억제하기 때문이다. 또한, 제조한 실리카 나노입자들을 전기감응형 스마트유체로 응용하였다. 그 결과, 상수, 공업용수 및 하천수를 활용하여 제조한 실리카 나노입자가 증류수를 활용하여 합성한 실리카 나노입자 대비 높은 전단응력을 나타냄을 확인할 수 있었고, 이는 작은 사이즈의 실리카 나노입자가 전기장 하에서 더 강한 사슬 구조를 형성하기 때문이다. 결론적으로, 본 연구를 통해 다양한 물을 증류수와 같이 정제하지 않고 사용하여 실리카 나노입자를 성공적으로 제조할 수 있음을 확인하였고, 해당 입자들이 전기감응형 스마트유체 응용에서 우수한 성능을 나타냄을 확인할 수 있었다.

This study describes the successful synthesize strategy for the silica nanoparticles utilizing various water sources, including tap, industrial, and stream waters without using deionized water. Also, as-synthesized silica nanoparticles are employed as dispersive materials for the electro-responsive smart fluid application. Specifically, homogeneous silica nanoparticles with sizes of 500-700nm are successfully prepared in large scale at once (ca. 12.0 g) with the described experimental method and showing similar structural and chemical characteristics with silica nanoparticles synthesized using the deionized water. The size of silica nanoparticles are varied according to the ion conductivity differences of tap, industrial, stream water, and deionized water. The size of silica nanoparticles decresed with the increased ion conductivity, indicating the ion suppression of growth of silica nanoparticles. Moreover, as-synthesized silica nanoparticles from various water sources of electro-responsive characteristic are investigated by the smart fluid application. The smart fluids containing silica nanoparticles synthesized by tap, industrial, and stream water exhibited higher shear stress compared to the deionized water, owing to the more rigid fibril-like structures formed by the smaller silica nanoparticles. Conclusively, uniform silica nanoparticles from various water sources without any purification are able to successfully prepared without usage of deionized water and resulting silica nanoparticles manifested higher electro-responsive performance.

키워드

과제정보

본 과제(결과물)는 2022년도 교육부의 재원으로 한국연구재단의 지원을 받아 수행된 지자체 대학 - 협력기반 지역혁신 사업의 결과입니다.(2021RIS-004)

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