This paper concentrates on the development of glasses with self-cleaning surfaces exhibiting high water contact angles. In this study, we prepared super-hydrophobic nano-ceramic coated glass based on titania & sil...This paper concentrates on the development of glasses with self-cleaning surfaces exhibiting high water contact angles. In this study, we prepared super-hydrophobic nano-ceramic coated glass based on titania & silica using simple sol-gel & dip coating methods and studied the best composition of the coatings by altering ratios of titanium tetraisopropoxide (TTIP)/tetraethyl orthosilicate (TEOS) with different homogenizing agents. We characterized the coatings by surface roughness measurement, percentage of optical transmission, static contact angle, near-infrared (NIR) transmission, and diffuse reflectance. The fabrication of coatings on glass substrates played an important role in increasing the water contact angle of about 95° and visible & NIR transmission of about 90%. We compared our modified glass substrate with commercial low emissivity (Low E) glass using X-ray diffraction (XRD) analysis, which showed pure amorphous surface claiming excellent wettability and thus the prepared glass substrate could have a variety of applications in different fields.展开更多
Ba1-xSrxTiO3（BST）powders were fabricated by sol-gel process by using strontium carbonate for the substitution of strontium acetate.Barium acetate,strontium carbonate and titanium-tetrabutoxide were used as raw mater...Ba1-xSrxTiO3（BST）powders were fabricated by sol-gel process by using strontium carbonate for the substitution of strontium acetate.Barium acetate,strontium carbonate and titanium-tetrabutoxide were used as raw materials.The BST gel was studied by thermal analysis techniques,the physical structure of the BST powders was measured by XRD and the grain size was measured.The results showed that the powders possess a single perovskite phase after 700℃ and the ideal powder size even after 800℃ calcining.This indicated that the powder can be used for BST ceramics and the fabrication of the sol-gel derived BST can be carried out well by using carbonate as the starting materials.展开更多
文摘This paper concentrates on the development of glasses with self-cleaning surfaces exhibiting high water contact angles. In this study, we prepared super-hydrophobic nano-ceramic coated glass based on titania & silica using simple sol-gel & dip coating methods and studied the best composition of the coatings by altering ratios of titanium tetraisopropoxide (TTIP)/tetraethyl orthosilicate (TEOS) with different homogenizing agents. We characterized the coatings by surface roughness measurement, percentage of optical transmission, static contact angle, near-infrared (NIR) transmission, and diffuse reflectance. The fabrication of coatings on glass substrates played an important role in increasing the water contact angle of about 95° and visible & NIR transmission of about 90%. We compared our modified glass substrate with commercial low emissivity (Low E) glass using X-ray diffraction (XRD) analysis, which showed pure amorphous surface claiming excellent wettability and thus the prepared glass substrate could have a variety of applications in different fields.
文摘Ba1-xSrxTiO3（BST）powders were fabricated by sol-gel process by using strontium carbonate for the substitution of strontium acetate.Barium acetate,strontium carbonate and titanium-tetrabutoxide were used as raw materials.The BST gel was studied by thermal analysis techniques,the physical structure of the BST powders was measured by XRD and the grain size was measured.The results showed that the powders possess a single perovskite phase after 700℃ and the ideal powder size even after 800℃ calcining.This indicated that the powder can be used for BST ceramics and the fabrication of the sol-gel derived BST can be carried out well by using carbonate as the starting materials.
