摘要 : In this article, we report an optimization study of a photocatalytic self-cleaning sol-gel formulation. In particular we studied the effect of formulation preparation time on the formation of anatase titanium dioxide sol and its c... 展开 In this article, we report an optimization study of a photocatalytic self-cleaning sol-gel formulation. In particular we studied the effect of formulation preparation time on the formation of anatase titanium dioxide sol and its compatibility to protein keratin-type wool fibers. The sols were formed by a low temperature sol-gel process. The nucleated anatase was characterized by UV-vis transmission, particle size distribution, X-ray diffraction, and transmission electron microscopy. The compatibility between the formulations and wool fibers is evaluated by field-emission scanning electron microscopy, UV transmission, and mechanical properties. The photocatalytic self-cleaning activity of coated fibers and its reproducibility are also discussed. (C) 2008 Elsevier Inc. All rights reserved. 收起