Photocatalytic composition for water purification
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-023/00
B01J-023/50
C02F-001/32
C02F-001/72
B01J-035/00
B01J-035/08
B01J-037/02
B01J-023/02
B01J-023/06
B01J-037/00
B01J-037/04
B01J-037/08
B01J-037/34
C02F-001/30
출원번호
US-0010174
(2016-01-29)
등록번호
US-10183277
(2019-01-22)
발명자
/ 주소
Kurup, Deepika Saraswathy
출원인 / 주소
Kurup, Deepika Saraswathy
대리인 / 주소
Foley Hoag LLP
인용정보
피인용 횟수 :
0인용 특허 :
11
초록▼
Disclosed herein are lightweight and settable photocatalytic compositions and solid composites; methods of preparing the compositions and solid composites; and their use in water purification. The compositions are comprised of photocatalysts such as titanium dioxide (TiO2) and zinc oxide (ZnO), ligh
Disclosed herein are lightweight and settable photocatalytic compositions and solid composites; methods of preparing the compositions and solid composites; and their use in water purification. The compositions are comprised of photocatalysts such as titanium dioxide (TiO2) and zinc oxide (ZnO), lightweight glass bubbles, and a hydraulic cementing binder. The lightweight and settable photocatalytic compositions can be formed into lightweight photocatalytic solid composites and/or structures by mixing with water and moist curing. Disclosed herein are relatively simple, fast, and cost effective methodologies to photodope the TiO2—ZnO compositions and composites with silver (Ag), to enhance and extend the photocatalytic activity from the ultraviolet into the visible light spectrum. The lightweight and settable TiO2—ZnO and Ag—TiO2—ZnO compositions are used in making solids, structures, coatings, and continuous or semi-continuous water purification panels for purifying contaminated water.
대표청구항▼
1. A composition comprising: one or more photocatalysts selected from the group consisting of TiO2, ZnO, WO3, Cu2O, SnO2, SiO2, RuO2, SrTiO3, Fe2O3, NiO, and SiC;one or more soda-lime-borosilicate glass bubbles; andhydraulic cement,wherein the one or more photocatalysts and soda-lime-borosilicate gl
1. A composition comprising: one or more photocatalysts selected from the group consisting of TiO2, ZnO, WO3, Cu2O, SnO2, SiO2, RuO2, SrTiO3, Fe2O3, NiO, and SiC;one or more soda-lime-borosilicate glass bubbles; andhydraulic cement,wherein the one or more photocatalysts and soda-lime-borosilicate glass bubbles are in a homogenous mixture. 2. The composition of claim 1, wherein the photocatalyst is TiO2, ZnO, or a mixture of both. 3. The composition of claim 1, further comprising one or more metals and non-metals selected from the group consisting of N, C, S, P, B, F, I, Cu, Ag, Pt, Pd, Mn, W, Ni, Sn, Fe, and V. 4. The composition of claim 3, wherein the photocatalyst is a complex comprising Ag, TiO2, and ZnO. 5. The composition of claim 3, wherein the composition comprises a metal; the metal is Ag; and the metal coats the surface of the composition. 6. The composition of claim 1, wherein the glass bubbles are hollow and transparent to UV and visible light. 7. The composition of claim 1, wherein the photocatalyst is a mixture of ZnO and TiO2, and the proportions by weight of ZnO:TiO2:soda-lime-borosilicate glass bubbles:hydraulic cement is in the ratio of 1:4:25:100.
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