期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 427, 期 -, 页码 49-53出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2013.11.028
关键词
Vanadium dioxide; Nanoparticle; Nanocomposite; Nanothermochromic; Sol-gel; Mechanical bead milling; Smart window
VO2 nanoparticles with a dimension of approximately 20 nm were obtained by simple mechanical bead-milling method, which were well dispersed in transparent silica-alumina (Si-Al) gel matrix to form nanocomposites. The VO2/Si-Al gel thermochromic nanocomposite foils were fabricated with various VO2 solid contents and foil thickness. With 10% VO2 loading and 3 mu m foil thickness, high luminous transmittance (T-lum(20 degrees C) = 63.7% and T-lum(90 degrees C) = 54.4%), and large solar modulation ability (Delta T-sol = 12%) can be obtained which surpasses the best reported results (nanoporous films:T-lum(20 degrees C) = 43.3%, T-lum(90 degrees C)) = 39.9% and Delta T-sol = 14.1%). This current approach provided a simple and scalable preparation method with the best combined thermochromic performance. (C) 2013 Elsevier Inc. All rights reserved.
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