# US 2016/0257583 A1 · Disinfection compositions and methods

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2016/0257583 A1
- Document ID: US20160257583A1
- Status: Published application
- Kind: A1
- Application number: 14/980,323
- Filed: 2015-12-28
- Published: 2016-09-08
- Earliest claimed: 2015-03-04
- Assignees: The Claire Technologies Corporation
- Applicants: Claire, LLC
- Inventors: Cristian Vasile Chis
- Web page: https://patentgrep.com/patent/US20160257583A1

## CPC

- C02F 1/505: {by oligodynamic treatment}
- C02F 2103/002: {Grey water, e.g. from clothes washers, showers or dishwashers}
- C02F 2103/008: {Originating from marine vessels, ships and boats, e.g. bilge water or ballast water}
- C02F 2103/023: {Water in cooling circuits}
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)

## Abstract

Provided herein are disinfection compositions, devices, systems and methods useful for decontamination and/or disinfection of water and other liquid solutions. The disclosed composite materials can comprise a germicidal surface comprising a support substrate, one or more micrometric aggregates of titanium oxide on the support substrate, the titanium oxide aggregates comprising chloride atoms, and one or more micrometric aggregates of silver attached to the chloride atoms of the titanium oxide aggregates, wherein the micrometric aggregates of titanium oxide with silver atoms have a germicidal activity. Methods of using the same for reducing or eliminating microorganisms in water or a fluid can comprise contacting water or fluid with microorganisms with the composite material, wherein the microorganisms in the water or fluid are reduced or eliminated from the water or fluid.

## Claims

### Claim 1

A composite material with a germicidal surface comprising:
a support substrate;
one or more micrometric aggregates of titanium oxide on the support substrate, the titanium oxide aggregates comprising chloride atoms; and
one or more micrometric aggregates of silver attached to the chloride atoms of the titanium oxide aggregates, wherein the micrometric aggregates of titanium oxide with silver atoms have a germicidal activity.

### Claim 2 (depends on 1)

The composite material according to claim 1, wherein the support substrate comprises a silica gel or activated alumina, wherein the support substrate comprises a surface area of at least 50 m2/g and not more then 850 m2/g.

### Claim 3 (depends on 1)

The composite material according to claim 1, wherein the aggregates of titanium oxide with chloride atoms are of a size greater than about 250 nm and up to about 10,000 nm and cover partially the surface of the support substrate.

### Claim 4 (depends on 1)

The composite material according to claim 1, wherein the of aggregates of titanium oxide with chloride atoms comprise no more than about 5 to about 7% by weight of the composite material.

### Claim 5 (depends on 1)

The composite material according to claim 1, wherein the silver aggregates are larger than about 250 nm and up to about 1,000 nm and cover at least partially the support substrate.

### Claim 6 (depends on 1)

The composite material according to claim 1, wherein the silver aggregates are not more than about 15% by weight of the composite material.

### Claim 7 (depends on 1)

The composite material according to claim 1, wherein the silver aggregates consist of metallic silver.

### Claim 8 (depends on 1)

A method for reducing or eliminating microorganisms in water or a fluid, comprising:
providing a composite material of claim 1; and
contacting water or fluid with microorganisms with the composite material,
wherein the microorganisms in the water or fluid are reduced or eliminated from the water or fluid.

### Claim 9 (depends on 8)

The method of claim 8, wherein the wherein the microorganisms comprise bacteria type Gram+ or Gram−, micro-fungi, micro-algae, yeast, virus or any combination thereof.

### Claim 10 (depends on 8)

The method of claim 8, wherein contacting the water or fluid with microorganisms comprises providing a device comprising the composite material and a filter, column, bed or structure with a inlet and outlet configured to allow the water or fluid to flow through the device while contacting the composite material.

### Claim 11 (depends on 8)

The method of claim 8, wherein the water or fluid comprises wastewater, grey water, well water, cooling water, condensation water, ballast water, ice production water, drinking water, industrial water, cooling oil or any other fluid susceptible to contain microorganisms.