Relationship between the Adsorption of Dye and the Surface Charge Density of Silica Sol (실리카졸의 표면 전하 밀도와 염료 흡착과의 상관성)

조경숙; Seung-Ho Lee (이승호); 이동현; Hyung Mi Lim (임형미); Dae Sung Kim (김대성)

Relationship between the Adsorption of Dye and the Surface Charge Density of Silica Sol

Textile Coloration and Finishing
Abbr : Text. Color. and Finish.
2014, 26(4), pp.297-304
Publisher : The Korean Society Of Dyers And Finishers
Research Area : Engineering > Fiber Engineering > Dyeing Engineering

조경숙 ¹, Seung-Ho Lee ², 이동현 ³, Hyung Mi Lim ³, Dae Sung Kim ²

¹한국세라믹기술원 에너지환경소재본부 에코복합소재센터
²한국세라믹기술원 에너지환경소재본부
³한국세라믹기술원

Accredited

ABSTRACT

In this study, we investigated the relationship between the adsorption property of Methyl violet or Tartrazine dye onto silica sol surface and surface charge density of the sol. The adsorption ratio of Methyl violet dye on silica sol decreased to 74% and 92% for the 68nm and 94nm silica sol, respectively, at dye concentration of 175μg/m2. However, the adsorption ratio of Tartrazine dye on 68nm and 94nm silica sol was about 0% for both of them. The surface charge density is –0.40C/m2, -0.26C/m2 for 68nm and 94nm silica sol, respectively. The amount of Methyl violet dye adsorbed on silica sol increased with an increase of surface charge density of particle at the same concentration of the dye. The adsorbed amount of the silica having high surface charge density is larger at high pH domain. But adsorbed amount of the silica having low surface charge density is larger at low pH domain.

KEYWORDS

silica sol, methyl violet, tartrazine, adsorption, surface charge density

Citation status

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