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물유리를 이용한 나노실리카 제조 시 pH가 미치는 영향 KCI 등재 SCOPUS

The Effect of pH on Synthesis of Nano-Silica Using Water Glass

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한국재료학회지 (Korean Journal of Materials Research)
한국재료학회 (Materials Research Society Of Korea)
초록

Synthesis of nano-silica using water glass in a Sol-Gel process is one of several methods to manufacture nano-silica. In nano-silica synthesized from water glass, there are various metal impurities. However, synthesis of nano-silica using water glass in a Sol-Gel process is an interesting method because it is relatively simple and cheap. In this study, nano-silica was synthesized from water glass; we investigated the effect of pH on the synthesis of nano-silica. The morphology of the nanosilica with pH 2 was flat, but the surface of the nano-silica with pH 10 had holes similar to small craters. As a result of ICPOES analysis, the amount of Na in the nano-silica with pH 2 was found to be 170 mg/kg. On the other hand, the amount of Na in the nano-silica with pH 10 was found to be 56,930 mg/kg. After calcination, the crystal structure of the nano-silica with pH 2 was amorphous. The crystal structure of the nano-silica with pH 10 transformed from amorphous to tridymite. This is because elemental Na in the nano-silica had the effect of decreasing the phase transformation temperature

목차
Abstract
 1. 서 론
 2. 실험 방법
  2.1 나노실리카 제조
  2.2 나노실리카 특성 분석
 3. 결과 및 고찰
 4. 결 론
 Acknowledgement
 References
저자
  • 최진석(금오공과대학교 신소재공학과) | Jin Seok Choi
  • 안성진(금오공과대학교 신소재공학과) | Sung Jin An Corresponding author