کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
613789 880728 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On-line tracking of the coating of nanoscaled silica with titania nanoparticles via zeta-potential measurements
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
On-line tracking of the coating of nanoscaled silica with titania nanoparticles via zeta-potential measurements
چکیده انگلیسی

Nanoscaled spherical silica particles were directly coated with the titania nanoparticles by means of a heterogenic coagulation. Silica was prepared by the Stöber method, titania by a hydrolysis–condensation reaction of tetrapropylorthotitanate under acidic conditions. The on-line tracking of the coating process was performed by measuring the change in zeta potential during the gradual addition of a titania sol to the spherical silica particles. Silica particles of various sizes were used to determine the consumption of the titania sol in the dependence upon the particle size. The coated and uncoated particles were characterized by zeta-potential measurements, acoustic attenuation spectroscopy, dynamic light scattering, and scanning electron microscopy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 293, Issue 1, 1 January 2006, Pages 88–92
نویسندگان
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