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1. WO2021044237 - PHOTOCATALYTIC CERAMIC

Publication Number WO/2021/044237
Publication Date 11.03.2021
International Application No. PCT/IB2020/057562
International Filing Date 12.08.2020
IPC
C04B 41/87 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
41After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
80of only ceramics
81Coating or impregnating
85with inorganic materials
87Ceramics
C04B 33/13 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
33Clay-wares
02Preparing or treating the raw materials individually or as batches
13Compounding ingredients
CPC
A61L 2/088
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
2Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
02using physical phenomena
08Radiation
088using a photocatalyst or photosensitiser
B01J 21/063
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
21Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
06Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
063Titanium; Oxides or hydroxides thereof
B01J 27/1806
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
27Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
14Phosphorus; Compounds thereof
16containing oxygen ; , i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr
18with metals ; other than Al or Zr
1802Salts or mixtures of anhydrides with compounds of other metals than V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, e.g. phosphates, thiophosphates
1806with alkaline or alkaline earth metals
B01J 35/002
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
002Catalysts characterised by their physical properties
B01J 35/004
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
002Catalysts characterised by their physical properties
004Photocatalysts
B01J 35/006
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
002Catalysts characterised by their physical properties
0046Physical properties of the active metal ingredient
006metal crystallite size
Applicants
  • ITALCER S.P.A. [IT]/[IT]
Inventors
  • LESCI, Isidoro Giorgio
Agents
  • RIGAMONTI, Dorotea
  • COLOMBO, Stefano Paolo
  • PIETRA, Giulia
  • CEVINI, Gaia
  • MERLI, Silvia
Priority Data
10201900001567705.09.2019IT
Publication Language English (EN)
Filing Language Italian (IT)
Designated States
Title
(EN) PHOTOCATALYTIC CERAMIC
(FR) CÉRAMIQUE PHOTOCATALYTIQUE
Abstract
(EN)
The present invention relates to a method for producing an antibacterial photocatalytic ceramic that comprises: - making available at least one amorphous metal; - making available a biomimetic material or a biomaterial based on calcium phosphate; - functionalizing said biomimetic material or said biomaterial based on calcium phosphate, with said at least one amorphous metal, obtaining a functionalized and oriented composite; - adding said functionalized composite to a ceramic mixture, and/or applying said functionalized composite on a ceramic semi- finished product, where ceramic semi-finished product means the ceramic material before baking; - applying said functionalized composite on a ceramic semi- finished product; - baking at a temperature between 600 and 1400°C, preferably between 900 and 1300°C, for a time that varies from 20 to 500 minutes, obtaining an antibacterial photocatalytic ceramic. The present invention further relates to a photocatalytic ceramic material that comprises a biomimetic material having a nanostructured hierarchical structure with macro and micro cavities, within which at least one photocatalytic material selected from metal oxides and / or sulphides in the crystalline form with a rutile-like structure is included, and tiles, sanitary ware and tableware comprising the same.
(FR)
La présente invention concerne un procédé de production d'une céramique photocatalytique antibactérienne qui comprend : - le fait de rendre disponible au moins un métal amorphe ; - la mise à disposition d'un matériau biomimétique ou d'un biomatériau à base de phosphate de calcium ; - la fonctionnalisation dudit matériau biomimétique ou dudit biomatériau à base de phosphate de calcium, avec ledit au moins un métal amorphe, l'obtention d'un composite fonctionnalisé et orienté ; - l'ajout dudit composite fonctionnalisé à un mélange céramique, et/ou l'application dudit composite fonctionnalisé sur un produit céramique semi-fini, le produit céramique semi-fini utilisant le matériau céramique avant cuisson ; - l'application dudit composite fonctionnalisé sur un produit céramique semi-fini ; - la cuisson à une température comprise entre 600 et 1400 °C, de préférence entre 900 et 1300 °C, pendant une durée variant de 20 à 500 minutes, l'obtention d'une céramique photocatalytique antibactérienne. La présente invention concerne en outre un matériau céramique photocatalytique qui comprend un matériau biomimétique ayant une structure hiérarchique nanostructurée avec des macro et des microcavités, au sein duquel au moins un matériau photocatalytique choisi parmi des oxydes métalliques et/ou des sulfures sous forme cristalline avec une structure de type rutile est inclus, et des carreaux, des articles sanitaires et de la vaisselle le comprenant.
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