Abstract:
The invention relates to the purification and disinfection of air and water. A photocatalytic element consists of sintered glass beads with a pore volume fraction from 20% to 40% and a pore size from 0.1 to 0.5 mm, the surface of which is coated with a titanium dioxide powder, having a specific surface area of 150-400 m2/g, at the rate of 0.5-2% relative to the total mass of the photocatalytic element. The surface of the glass beads has a relief shape with a relief depression of 0.5-10 μm. The method for producing the photocatalytic element comprises sintering the glass beads at a temperature that is 5-20° C. higher than the glass softening temperature, modifying the bead surface with chemical etching agents, and coating the bead surface with the titanium dioxide powder from a water suspension at a pH of 2.9±0.1.
Abstract:
The invention relates to the purification and disinfection of air and water. A photocatalytic element consists of sintered glass beads with a pore volume fraction from 20% to 40% and a pore size from 0.1 to 0.5 mm, the surface of which is coated with a titanium dioxide powder, having a specific surface area of 150-400 m2/g, at the rate of 0.5-2% relative to the total mass of the photocatalytic element. The surface of the glass beads has a relief shape with a relief depression of 0.5-10 pm. The method for producing the photocatalytic element comprises sintering the glass beads at a temperature that is 5-20° C. higher than the glass softening temperature, modifying the bead surface with chemical etching agents, and coating the bead surface with the titanium dioxide powder from a water suspension at a pH of 2.9±0.1.
Abstract translation:本发明涉及空气和水的净化和消毒。 光催化元件由细孔体积分数为20%至40%,孔径为0.1至0.5mm的烧结玻璃珠组成,其表面涂有二氧化钛粉末,比表面积为150-400 m 2 / g,相对于光催化元素的总质量为0.5-2%。 玻璃珠的表面具有0.5-10μm的缓冲凹陷的浮雕形状。 制备光催化元件的方法包括在比玻璃软化温度高5-20℃的温度下烧结玻璃珠,用化学蚀刻剂改性珠粒表面,并用二氧化钛粉末涂覆珠粒表面 pH为2.9±0.1的水悬浮液。