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http://dx.doi.org/10.4191/KCERS.2002.39.6.535

Characteristics of Ag ions Photoadsorption Using Photocatalytic TiO2 Nanocrystalline Powder  

이종국 (조선대학교 금속·재료공학부)
유해근 (조선대학교 금속·재료공학부)
황규홍 (경상대학교 재료공학부)
서동석 (서울대학교 재료공학부)
강희석 (한국원자력연구소 원자력재료기술개발팀)
배현숙 (한국원자력연구소 원자력재료기술개발팀)
김흥회 (한국원자력연구소 원자력재료기술개발팀)
Publication Information
Journal of the Korean Ceramic Society / v.39, no.6, 2002 , pp. 535-539 More about this Journal
Abstract
In this study photoadsorption propreties of Ag ion in AgNO$_3$ solution by TiO$_2$nanopowder synthesized by homogeneous precipitation process at low temperature were investigated. It was found that the photocatalytic redliction in AgNO$_3$solution was occurred by TiO$_2$nanopowder even under th sun light irradiation, although the reduction of Ag ions was slow with th small adsorption of 9.32 ppm. Notably the Ag adsorption was promoted in th dark condition probably owing to the chestnut bur shape of TiO$_2$ nanopowder itself. In the application of UV the Ag ions were completely adsorbed within 120 min, showing more significant photocatalytic reaction. The measured adsorption reaction rate and adsorption equilibrium rate constants were 0.0004 g/min and 1494.20(120 $m^2$/g), respectively.
Keywords
$TiO_2$; Ag; Photoreaction;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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