A method of making a transparent visual light activated photocatalytic superhydrophilic glass material

• Main Authors: Oja Acik, Ilona, Dündar, Ibrahim, Kritševskaja, Marina, Katerski, Atanas
• Format: Patent
• Language: English; Estonian
• Published: 15.03.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; INORGANIC CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The subject of the invention is a method of making a transparent visible light activated photocatalytic superhydrophilic glass material, comprising the steps of providing a metal alcoxide with a gelating agent and a solvent, applying said solution at an heated substrate, such as window glass, borosilicate glass, soda lime glass preferably at 250°C to 450°C by ultrasonic spray, so that metal oxide layer is formed on the heated surface. The material made according to invented method is transparent (over 80%), having super hydrophilic properties (contact angle 0 deg,) and with ability to decompose volatile organic compounds (10 ppm) effectively under UV-A and ViS light, and under relative humidity at least from 6% to 40%.. Leiutiseks on meetod nähtava valgusega aktiveeritava läbipaistva fotokatalüütilise superhüdrofiilse klaasmaterjali valmistamiseks, mille kohaselt valmistatakse lahus metallalkoksiidist, geelistavast ainest ja lahustist, saadud lahus kantakse kuumutatud aluspinnale (aknaklaas, borosilikaatklaas, sooda-lubiklaas või kvarts) nii, et aluspinnale tekib metalloksiidi kiht, näiteks TiO2, kusjuures pinnalekandmine toimub ultraheli-pihustuspürolüüsiga aluspinna temperatuuril 250 kuni 450 °C; ja saadust lõõmutatakse õhu keskkonnas temperatuuril 400-700 °C. Meetodil valmistatud materjal on läbipaistev (80%), superhüdrofiilsete omadustega (kontaktnurk alla 10 kraadi) tugevalt alusele kinnitunud ning tõhusa lenduvate orgaaniliste ühendite (10 ppm) lagundamise võimega UV-A-kiirguse ja nähtava valguse toimel suhtelisel niiskusel vähemalt 6-40%.