Evolution of the Morphology of Zinc Oxide/Silica Particles Made by Spray Combustion
Evolution of the Morphology of Zinc Oxide/Silica Particles Made by Spray Combustion
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喷雾燃烧制备氧化锌/二氧化硅颗粒形态的演变
DOI：
10.1111/j.1551-2916.2004.00365.x
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发表时间：
2004
影响因子：
3.9
通讯作者：
S. Pratsinis
中科院分区：
文献类型：
--
作者：
T. Tani;K. Takatori;S. Pratsinis
将醋酸锌与六甲基二硅氧烷或SiO2溶胶分别分散在甲醇或油包水乳液中，采用火焰喷雾热解法制备纯ZnO-SiO2颗粒和混合ZnO-SiO2颗粒。通过氮吸附、红外吸收和x射线衍射对产物颗粒进行了表征。在热泳取样收集后，通过透射电镜揭示了沿火焰轴固体或空心颗粒形成的演变。考察了硅前驱体和溶剂对产物颗粒特性的影响。产物颗粒的特性受硅前驱体和溶剂的控制。
Pure and mixed ZnO–SiO2 particles were made by flame-spray pyrolysis of zinc acetate and hexamethyldisiloxane or SiO2 sol dispersed in methanol or water-in-oil emulsion, respectively. The product particles were characterized by nitrogen adsorption, infrared absorption, and X-ray diffraction. The evolution of solid or hollow particle formation along the flame axis was unraveled by transmission electron microscopy after collection by thermophoretic sampling. The effects of silicon precursor and solvent on product particle characteristics were evaluated. The characteristics of the product particles were controlled by the Si precursor and solvent.