# US 2021/0275989 A1 · Functional materials and devices for reducing toxic pollutants > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0275989 A1 - Document ID: US20210275989A1 - Status: Published application - Kind: A1 - Application number: 17/249,501 - Filed: 2021-03-03 - Published: 2021-09-09 - Earliest claimed: 2020-03-05 - Assignees: Performance Labs Pte. Ltd. - Applicants: Performance Labs Pte. Ltd. - Inventors: Daniel Gubler - Web page: https://patentgrep.com/patent/US20210275989A1 ## CPC - B01J 20/223: {containing metals, e.g. organo-metallic compounds, coordination complexes} - A41B 1/08: Details - A41D 13/11: Protective face masks, e.g. for surgical use, or for use in foul atmospheres (eye-masks A61F9/04 {; hoods affording protection against heat or harmful chemical agents A62B17/04}) - A62B 17/006: {against contamination from chemicals, toxic or hostile environments; ABC suits} - A62B 23/025: {the filter having substantially the shape of a mask (surgical face masks A41D13/11)} - A62D 3/33: by chemical fixing the harmful substance, e.g. by chelation or complexation - A62D 5/00: Composition of materials for coverings or clothing affording protection against harmful chemical agents - B01J 20/28028: {Particles immobilised within fibres or filaments} - B01J 20/3208: {Polymeric carriers, supports or substrates} - B01J 20/3265: {with an organic functional group containing a metal, e.g. a metal affinity ligand} - B01J 20/3425: {of sorbents or filter aids comprising organic materials} - B01J 20/3475: {in the liquid phase} - D06M 13/352: having five-membered heterocyclic rings - D06M 13/503: without bond between a carbon atom and a metal or a boron, silicon, selenium or tellurium atom - A62D 2101/20: Organic substances - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - A41B: SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS - A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES - A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00) - A62D: CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS - D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS ## Abstract Provided herein are devices, systems, and methods for capturing toxic pollutants, such as polycyclic aromatic hydrocarbons. Certain embodiments of the present disclosure are related to a pollutant-absorbing material that includes an absorbent compound, such as sodium copper chlorophyllin, capable of binding to and capturing a toxic pollutant, and methods of making and using the material for the capture of toxic pollutants. The pollutant-absorbing material can be incorporated into an article worn by a person, such as a shirt or a facemask. ## Claims ### Claim 1 A pollutant-absorbing composition comprising a textile material and an absorbent compound, wherein the composition captures a toxic pollutant. ### Claim 2 (depends on 1) The composition of claim 1, wherein the textile material comprises cotton, rayon, silk, flax, hemp, bamboo, polyester, nylon, or wool, or a combination thereof. ### Claim 3 (depends on 1) The composition of claim 1, wherein the textile material is configured as a mask, a shirt, an overcoat, a hat, a linen, gloves, or an air filter. ### Claim 4 (depends on 1) The composition of claim 1, wherein the absorbent compound is sodium copper chlorophyllin (SCC). ### Claim 5 (depends on 1) The composition of claim 1, wherein the absorbent compound is present in an amount ranging from 2 μmol to 30 μmol of absorbent compound per gram of textile material. ### Claim 6 (depends on 1) The composition of claim 1, wherein the absorbent compound is present in an amount ranging from 50 to 500 nmol of absorbent compound per cm2 of textile material. ### Claim 7 (depends on 1) The composition of claim 1, wherein the absorbent compound is present in an amount of 1 gram to 20 grams. ### Claim 8 (depends on 1) The composition of claim 1, wherein the toxic pollutant comprises an airborne pollutant. ### Claim 9 (depends on 1) The composition of claim 1, wherein the toxic pollutant comprises a polycyclic aromatic hydrocarbon (PAH). ### Claim 10 (depends on 1) The composition of claim 1, wherein the toxic pollutant comprises benzo[a]pyrene, benzo[e]pyrene, or combinations thereof. ### Claim 11 (depends on 1) The composition of claim 1, wherein the composition is washable, and wherein the composition retains the absorbent compound after washing. ### Claim 12 A method of capturing a toxic pollutant comprising: providing a pollutant-absorbing composition, wherein the composition comprises: a textile material; and an absorbent compound, wherein the composition is configured to capture a toxic pollutant; and contacting the composition with a toxic pollutant. ### Claim 13 (depends on 12) The method of claim 12, wherein the toxic pollutant comprises a polycyclic aromatic hydrocarbon (PAH). ### Claim 14 (depends on 12) The method of claim 12, wherein the toxic pollutant is benzo[a]pyrene. ### Claim 15 (depends on 12) The method of claim 12, wherein the composition binds to the toxic pollutant in an amount ranging from 0.2 to 10 nmol of pollutant. ### Claim 16 (depends on 12) The method of claim 12, further comprising washing the pollutant-absorbing composition after capturing the toxic pollutant, thereby removing the toxic pollutant and regenerating the pollutant-absorbing composition. ### Claim 17 A method of making a pollutant-absorbing composition, the method comprising: providing the textile material; and contacting the textile material with an absorbent compound. ### Claim 18 (depends on 17) The method of claim 17, wherein the absorbent compound is present in an amount ranging from 0.1 to 1 mg/mL. ### Claim 19 (depends on 17) The method of claim 17, wherein the contacting is performed for a period of time ranging from 1 to 20 hours at a temperature ranging from 45 to 70° C. ### Claim 20 An article of clothing comprising a composition comprising: a textile material; and an absorbent compound, wherein the composition is configured to capture a toxic pollutant. ### Claim 21 (depends on 20) The article of clothing of claim 20, wherein the article of clothing comprises a shirt or a facemask.