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KMID : 1024520030120091005
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Journal of the Environmental Sciences
2003 Volume.12 No. 9 p.1005 ~ p.1010
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Surface Modification and Anchoring Titanium Dioxide on Mesoporous Activated
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Ju Chang-Sik
Park Heung-Jai
Jeong Kap-Seop
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Abstract
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For the purpose of surveying any possibility of anchoring titanium dioxide on activated carbons to promote their activities as catalysts and/or adsorbents, two activated carbons were oxidized with ammonium peroxydisulfate and followed by anchoring titanium dioxide. The anchoring of titanium dioxide on the oxidized activated carbons were performed via the adsorption of tetrabutyltitanate, hydrolysis with deionized water, and calcination. The effect of oxidizing and anchoring treatment on the surface element composition, surface area, and pore texture were analyzed by XPS, BET and TPD. The oxidation of activated carbons with ammonium peroxydisulfate introduced carboxyl groups on the surface of activated carbons and these carboxyl groups promoted the anchoring of titanium oxide on the activated carbons. However, the treatments affected the surface area and the porosity of activated carbons.
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KEYWORD
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Activated carbon, Surface modification, Anchoring titanium dioxide, Mesoporous
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