Combined SANS and SAXS study of the action of ultrasound on the structure of amorphous zirconia gels |
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| Institution: | 1. Huaian Key Laboratory of Functional Materials for Informatics, School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huaian 223300, People''s Republic of China;2. Jiangsu Province Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, People''s Republic of China;1. Department of Chemistry, National Institute of Technology, Rourkela, India;2. Department of Mechanical Engineering, National Institute of Technology, Rourkela, India |
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| Abstract: | In the present work, we have studied for the first time the combined effect of both sonication and precipitation pH on the structure of amorphous zirconia gels synthesized from zirconium(IV) propoxide. The techniques of small-angle neutron and X-ray scattering (SANS and SAXS) and low temperature nitrogen adsorption provided the integral data on the changes in the microstructure and mesostructure of these materials caused by ultrasonic (US) treatment. Amorphous ZrO2·xH2O synthesized under ultrasonic treatment was found to possess a very structured surface, characterized by the surface fractal dimension 2.9–3.0, compared to 2.3–2.5 for the non US-assisted synthesis, and it was also found to possess a higher specific surface area, while the sizes of the primary particles remain unchanged. |
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| Keywords: | Zirconia Ultrasonication Fractals Small-angle neutron scattering Small-angle X-ray scattering Mesostructure |
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