SILICA NANOFIBER/NANOCRYSTALLINE METAL OXIDE COMPOSITE AND METHOD FOR PRODUCING SAME

WIPO Patent Application WO/2011/065521

A1

Provided are a composite, wherein a nanocrystalline metal oxide is bonded to a structure comprising silica nanofibers, and a method for producing the same. The silica nanofiber/nanocrystalline metal oxide composite is produced by: (1) a step for associating a polymer, which has a straight-chain polyethyleneimine skeleton, in an aqueous medium in the presence of ice; (2) a step for adding an alkoxysilane to the aqueous medium obtained in (1) to thereby form composite nanofibers comprising the aforesaid associate coated with silica, and allowing the fibers to spontaneously form a network type disk-shaped structure; (3) a step for mixing the disk-shaped structure obtained in (2) with a hydrolyzable metal compound to deposit a metal oxide on the fiber surface; and (4) a step for baking the disk-shaped structure obtained in (3) and thus removing the polymer in the fibers to thereby give silica nanofibers, while bonding the metal oxide, in the form of nanocrystals, to the fibers. In particular, a composite comprising zinc oxide serves as a luminescent material.

ZHU Pei-Xin (631 Sakado, Sakura-sh, Chiba 78, 〒2850078, JP)
諸　培新 (〒78 千葉県佐倉市坂戸６３１番地　財団法人川村理化学研究所内 Chiba, 〒2850078, JP)

JP2010/071217

June 03, 2011

November 29, 2010

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Kawamura Institute of Chemical Research (631 Sakado, Sakura-shi Chiba, 78, 〒2850078, JP)
財団法人川村理化学研究所 (〒78 千葉県佐倉市坂戸６３１番地 Chiba, 〒2850078, JP)
DIC Corporation (35-58, Sakashita 3-chome Itabashi-k, Tokyo 20, 〒1748520, JP)
ＤＩＣ株式会社 (〒20 東京都板橋区坂下三丁目３５番５８号 Tokyo, 〒1748520, JP)

C01B33/12; C08K3/36; C08L79/02; D01F9/08

KONO Michihiro (7-20 Nihonbashi 3-chome, Chuo-k, Tokyo 33, 〒1038233, JP)

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