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Silica coating on ultrafine α-alumina particles

✍ Scribed by Sea-Fue Wang; Yung-Fu Hsu; Thomas C.K. Yang; Chia-Mei Chang; Yuhen Chen; Chi-Yuen Huang; Fu-Su Yen


Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
303 KB
Volume
395
Category
Article
ISSN
0921-5093

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Maghemite colloidal particles are coated with a silica layer using a silicon alkoxide as silica precursor. The coating process is studied by electrophoresis, quasi-elastic light scattering, nitrogen adsorption, and infrared spectrometry analyses. The conditions of complete coverage of the iron oxide