WO2017192057A4 - Modified porous coatings and a modular device for air treatment containing modified porous coatings. - Google Patents

Modified porous coatings and a modular device for air treatment containing modified porous coatings. Download PDF

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Publication number
WO2017192057A4
WO2017192057A4 PCT/PL2017/050024 PL2017050024W WO2017192057A4 WO 2017192057 A4 WO2017192057 A4 WO 2017192057A4 PL 2017050024 W PL2017050024 W PL 2017050024W WO 2017192057 A4 WO2017192057 A4 WO 2017192057A4
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WIPO (PCT)
Prior art keywords
deposit
modified porous
porous coatings
metod
module
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PCT/PL2017/050024
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French (fr)
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WO2017192057A1 (en
Inventor
Adriana ZALESKA-MEDYNSKA
Witold DYTRYCH
Michał NISCHK
Paweł MAZIERSKI
Original Assignee
Phu Dytrych Sp. Z O. O.
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Application filed by Phu Dytrych Sp. Z O. O. filed Critical Phu Dytrych Sp. Z O. O.
Priority to EP17740130.4A priority Critical patent/EP3452216A1/en
Publication of WO2017192057A1 publication Critical patent/WO2017192057A1/en
Publication of WO2017192057A4 publication Critical patent/WO2017192057A4/en

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    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/01—Deodorant compositions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18—Radiation
    • A61L9/20—Ultraviolet radiation
    • A61L9/205—Ultraviolet radiation using a photocatalyst or photosensitiser
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    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
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    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
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    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/14—Decomposition by irradiation, e.g. photolysis, particle radiation or by mixed irradiation sources
    • C23C18/143—Radiation by light, e.g. photolysis or pyrolysis
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    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61L12/00—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor
    • A61L12/08—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor using chemical substances
    • A61L12/12—Non-macromolecular oxygen-containing compounds, e.g. hydrogen peroxide or ozone
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    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
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    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20—Method-related aspects
    • A61L2209/21—Use of chemical compounds for treating air or the like
    • A61L2209/212—Use of ozone, e.g. generated by UV radiation or electrical discharge
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    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
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    • A—HUMAN NECESSITIES
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    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
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Abstract

Modified porous coatings formed from a porous deposit, preferably ceramic cubes or nanotubes, containing titanium oxide Ti02 or titanium oxide surface-modified with platinum TiO2-Pt as well as quantum dots. A modular device for air treatment containing modified porous coatings characterised in that it contains a dust removal module (1) for the removal of solid particles, an advanced oxidation module equipped with a chamber for conducting a photocatalytic reaction (2a) with the photocatalytic layer placed on the carrier in the form of a modified porous coating and a radiation source as well as a reaction chamber (2b) for contacting ozone with the contaminated gas phase, a residual ozone inactivation module (3) for the removal of ozone remains on the catalytic deposit, and also the adsorption module on activated carbon (4).

Claims

AMENDED CLAIMS received by the International Bureau on 05 December 2017 (05.12.2017)
1. Modified porous coatings characterized in that they are composed of a porous deposit, containing titanium oxide Ti02 or titanium oxide surface-modified with platinum TiC -Pt and quantum dots.
2. Modified porous coatings according to claim 1, characterized in that the porous deposit is composed of ceramic cubes.
3. Modified porous coatings according to claim 1, characterized in that the porous deposit is composed of nanotubes.
4. Modified porous coatings according to claim 1 or 2 or 3, characterized in that the quantum dots are selected from B12S3, Ag2S, CdS and SnS.
5. Method for producing modified porous coatings according to claim 1 or 2 or 3 or 4, characterized in that it comprises:
1st stage - substrate preparation, consisting of:
application of Ti02 or Pt-Ti02 to the deposit surface, or
anodizing the titanium containing deposit and optionally depositing platinum particles on the anodized deposit,
2nd stage - drying and calcination of the deposit, and
3rd stage - quantum dot deposition by chemical bath deposition.
6. The method according to claim 5, characterized in that the quantum dots are selected from B12S3, Ag2S, CdS and SnS.
7. The method according to claims 5 or 6, characterized in that when the deposit is ceramic, Ti02 or Pt-Ti02 is applied to the surface of the ceramic cubes by immersing the ceramic cubes in a paste containing Ti02 or Pt-Ti02.
8. The method according to claim 7, characterized in that the Ti02 or Pt-Ti02 paste is prepared by mixing and heating terpineol, butyl carbitol, ethylcellulose, sorbitan trioleate and di-butyl phthalate and adding Ti02 or Ti02-Pt.
9. The method according to claim 8, characterized in that Ti02-Pt paste is obtained using a reduction reaction consisting of introduction of an aqueous solution of K2PtCU into the suspension of Ti02 in an alcohol solution, followed by the addition of a NaBH4 sodium borohydride reducing agent.
10. The metod according to claim 5 or 6, characterized in that during anodizing of the titanium containing deposit a titanium film is used as a substrate. 19
11. The metod according to claim 10 characterized in that a previously purified titanium film is used, wherein the purification is performed by immersion in at least one solvent in the presence of ultrasound, and then the titanium film is washed and dried.
12. The metod according to claim 10 or 11, characterized in that the titanium film is placed in an electrolyte and subsequently anodized against the platinum cathode.
13. The metod according to claim 12, characterized in that the electrolyte comprises ethylene glycol and/or water and/or ammonium fluoride.
14. The metod according to claim 5 or 6 or 10 or 1 1 or 12 or 13, characterized in that the Ti02 matrix formed during the anodization on the surface of the substrate material is washed with demineralized water, dried and subjected to ultrasound to remove surface impurities.
15. The metod according to claim 10 or 11 or 12 or 13 or 14, characterized in that platinum nanoparticles are deposited on the surface of the Ti02 nanoparticles by photodeposition in a photoreactor.
16. The metod according to claim 15, characterized in that the Ti02 nanotube plate is immersed in a solution of HC1 at pH 5 and then in a solution of the K2Cl6Pt metal precursor, then isopropanol is introduced into the photoreactor and passed through a solution of N2 to remove the air and the solutions together with the submerged titanium foil coated with T1O2 nanotubes are exposed to UV-Vis radiation and dried.
17. A modular device for air treatment containing modified porous coatings characterised in that it contains a dust removal module (1) for the removal of solid particles, an advanced oxidation module equipped with a chamber for conducting a photocatalytic reaction (2a) with the photocatalytic layer placed on the carrier in the form of a modified porous coating according to claim 1, or 2, or 3, or 4, or 5, or 6, or 7, or 8, or 9, or 10, or 11 and a radiation source as well as a reaction chamber (2b) for contacting ozone with the contaminated gas phase, a residual ozone inactivation module (3) for the removal of ozone remains on the catalytic deposit, and also the adsorption module on activated carbon (4).
18. A modular device according to the claim 17 characterised in that the chamber for conducting a photocatalyst reaction (2a) with a photocatalyst layer and a radiation source operates in the mode of contaminants degradation, corresponding to the radiation intensity scope from the radiation source of between 0.2 and 20 mW/cm2 20 and in the mode of photocatalytic layer treatment, corresponding to the radiation intensity scope from the radiation source of between 10 and 60 mW/cm2.
19. A modular device according to the claim 18 characterised in that the time ratio of device operation in the contaminants degradation mode and in the photocatalytic layer treatment mode is between 5: 1 and 50: 1 respectively, preferably between 5: 1 and 15: 1.
PCT/PL2017/050024 2016-05-05 2017-05-05 Modified porous coatings and a modular device for air treatment containing modified porous coatings. WO2017192057A1 (en)

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