Fabrication of porous titania (brookite) microparticles with complex morphology by sol-gel replication of pollen grains

被引：86

作者：

Hall, SR ^{[1
]}

Swinerd, VM ^{[1
]}

Newby, FN ^{[1
]}

Collins, AM ^{[1
]}

Mann, S ^{[1
]}

机构：

[1] Univ Bristol, Sch Chem, Ctr Org Matter Chem, Bristol, Avon, England

来源：

CHEMISTRY OF MATERIALS | 2006年 / 18卷 / 03期

关键词：

D O I：

10.1021/cm0524087

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A nonaqueous route to morphologically complex porous particles of titania using hydrated pollen grains exposed to titanium isopropopxide (TIP) reaction solutions was investigated. Dandelion pollen was prepared by immersion in ethanol and water mixtures to produce hydrated grains so that the surface could react specifically with nonaqueous reaction solutions of TIP. Immersion of hydrated pollen grains in a 2-propanol solution of TIP for 15 min. followed by centrifugation and calcination, produced a black powder, consisting of porous inorganic particles. High magnification images of the replicated echinate spines confirmed the presence of titania spikes.

引用

页码：598 / 600

页数：3

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