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公开(公告)号：US11085906B2
公开(公告)日：2021-08-10
申请号：US15999043
申请日：2018-08-17
摘要： A composition for dry reagent colorimetric sensing of nanoparticles in aqueous media, including sodium borohydride (NaBH4), methylene blue (MB), and 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) in the form of a powdered mixture. The composition may be formed by combining MB, HEBES, and water to yield an aqueous mixture, removing water from the aqueous mixture to yield a solid mixture, and combining NaBH4 powder with the solid mixture to yield the composition. The composition may be used to detect metallic nanoparticles an aqueous solution by combining the composition with an aqueous solution to yield a test solution, and assessing a concentration of the metallic nanoparticles in the test solution based on absorbance of light by the test solution. The composition may be provided in an assay kit for sensing nanoparticles in aqueous media.
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公开(公告)号：US20190056363A1
公开(公告)日：2019-02-21
申请号：US15999043
申请日：2018-08-17
摘要： A composition for dry reagent colorimetric sensing of nanoparticles in aqueous media, including sodium borohydride (NaBH4), methylene blue (MB), and 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) in the form of a powdered mixture. The composition may be formed by combining MB, HEBES, and water to yield an aqueous mixture, removing water from the aqueous mixture to yield a solid mixture, and combining NaBH4 powder with the solid mixture to yield the composition. The composition may be used to detect metallic nanoparticles an aqueous solution by combining the composition with an aqueous solution to yield a test solution, and assessing a concentration of the metallic nanoparticles in the test solution based on absorbance of light by the test solution. The composition may be provided in an assay kit for sensing nanoparticles in aqueous media.
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公开(公告)号：US12092602B2
公开(公告)日：2024-09-17
申请号：US17206935
申请日：2021-03-19
申请人： Paul K. Westerhoff , Sergio Garcia-Segura , Shahnawaz Sinha , Rishabh Bansal , Rafael Verduzco , Michael S. Wong
发明人： Paul K. Westerhoff , Sergio Garcia-Segura , Shahnawaz Sinha , Rishabh Bansal , Rafael Verduzco , Michael S. Wong
CPC分类号： G01N27/308 , C02F1/46109 , C02F2001/46147
摘要： An electrode includes an electrically conductive substrate with a coating containing boron-doped diamond (BDD) nanoparticles. Fabricating the electrode can include dispersing BDD nanoparticles in a solvent to yield a suspension, coating a conductive substrate with the suspension, and drying the suspension to yield the electrode. In some cases, fabricating the electrode includes combining BDD nanoparticles with a polymeric resin precursor to yield a mixture including a metal oxide, coating a conductive substrate with the mixture to yield a coated substrate, and calcining the coated substrate to yield a metal oxide coating including BDD nanoparticles. In certain cases, fabricating the electrode includes combining powdered activated carbon with polymeric linkers to yield a polymeric precursor solution, combining BDD nanoparticles with the polymeric precursor solution to yield a mixture, coating a conductive substrate with the mixture to yield a coated substrate, and crosslinking the polymeric linkers to yield the electrode.
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公开(公告)号：US11667550B2
公开(公告)日：2023-06-06
申请号：US17245640
申请日：2021-04-30
申请人： Paul K. Westerhoff , Francois Perreault , Sergio Garcia-Segura , Shahnawaz Sinha , Ana Barrios , Renato Martin Montenegro Ayo
发明人： Paul K. Westerhoff , Francois Perreault , Sergio Garcia-Segura , Shahnawaz Sinha , Ana Barrios , Renato Martin Montenegro Ayo
CPC分类号： C02F1/46109 , A45F3/18 , C02F1/325 , C02F1/4672 , A45F2003/003 , C02F2001/46142 , C02F2001/46171 , C02F2201/009 , C02F2303/04 , C02F2305/023 , C02F2305/10 , C02F2307/02
摘要： A water-disinfecting apparatus includes a vessel with a cathode, an insert with a photoanode, an ultraviolet light source configured to be positioned in the insert, and a power source. The cathode forms an electrically conductive layer on an inner surface of the vessel. The photoanode is configured to be positioned in the cathode. The power source is configured to be operably coupled to the cathode, the photoanode, and the light source.
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公开(公告)号：US20210340034A1
公开(公告)日：2021-11-04
申请号：US17245640
申请日：2021-04-30
申请人： Paul K. Westerhoff , Francois Perreault , Sergio Garcia-Segura , Shahnawaz Sinha , Ana Barrios , Renato Martin Montenegro Ayo
发明人： Paul K. Westerhoff , Francois Perreault , Sergio Garcia-Segura , Shahnawaz Sinha , Ana Barrios , Renato Martin Montenegro Ayo
摘要： A water-disinfecting apparatus includes a vessel with a cathode, an insert with a photoanode, an ultraviolet light source configured to be positioned in the insert, and a power source. The cathode forms an electrically conductive layer on an inner surface of the vessel. The photoanode is configured to be positioned in the cathode. The power source is configured to be operably coupled to the cathode, the photoanode, and the light source.
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公开(公告)号：US20210032130A1
公开(公告)日：2021-02-04
申请号：US17063510
申请日：2020-10-05
摘要： A reactor for water splitting or water treatment includes a first electrode, a second electrode electrically coupled to the first electrode, and a proton exchange membrane separating the first electrode and the second electrode. The first electrode includes a first optical fiber coated with a photocatalytic material.
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公开(公告)号：US20180319677A1
公开(公告)日：2018-11-08
申请号：US15971083
申请日：2018-05-04
CPC分类号： C02F1/288 , B01J20/20 , B01J20/3225 , B01J20/3236 , C02F1/5245 , C02F2101/12 , C02F2103/007 , C02F2103/06 , C02F2103/08 , C02F2305/08
摘要： Compositions for bromide removal include a two-dimensional material impregnated with silver. The silver may be impregnated in the two-dimensional material by contacting the two-dimensional material with silver ions in an aqueous solution, allowing the silver ions to adsorb on the two-dimensional material, and drying the two-dimensional material. Removing bromide from an aqueous composition including bromide may include contacting the aqueous composition with a two-dimensional material impregnated with silver, and allowing the bromide to react with the silver to yield silver bromide.
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公开(公告)号：US11774341B2
公开(公告)日：2023-10-03
申请号：US17447259
申请日：2021-09-09
申请人： Paul K. Westerhoff , Shahnawaz Sinha , Yuqiang Bi
发明人： Paul K. Westerhoff , Shahnawaz Sinha , Yuqiang Bi
CPC分类号： G01N15/06 , G01N31/22 , G01N2015/0011 , G01N2015/0681 , G01N2015/0693
摘要： Quantifying nanobubbles in solution includes combining an indicator with a fluid comprising nanobubbles to yield a first solution, bursting the nanobubbles in the first solution to yield a second solution, and assessing a difference between the first solution and the second solution to yield a concentration of the nanobubbles in the first solution, a concentration of reactive oxygen species in the first solution or the second solution, or both.
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公开(公告)号：US11760663B2
公开(公告)日：2023-09-19
申请号：US17063510
申请日：2020-10-05
CPC分类号： C02F1/467 , C02F1/32 , C02F3/005 , C02F3/325 , H01G9/2031 , H01G9/2095 , C02F2103/06 , C02F2201/3222 , C02F2201/46115 , C02F2305/023 , C02F2305/10 , Y02W10/37
摘要： A reactor for water splitting or water treatment includes a first electrode, a second electrode electrically coupled to the first electrode, and a proton exchange membrane separating the first electrode and the second electrode. The first electrode includes a first optical fiber coated with a photocatalytic material.
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公开(公告)号：US20200158948A1
公开(公告)日：2020-05-21
申请号：US16690820
申请日：2019-11-21
IPC分类号： G02B6/02 , C03C25/106 , C02F1/32
摘要： A photoreactor including a reservoir configured to hold water, the reservoir defining an inlet and an outlet, and a multiplicity of optical fiber assemblies positioned in the reservoir. Each optical fiber assembly includes one or more optical fibers coated with a composition comprising a photoresponsive polymer and a light source optically coupled to the one or more optical fibers. The photoresponsive polymer undergoes a change from an initial state to an irradiated state when irradiated with light from the light source, and photoresponsive polymer in the irradiated state is adapted to bind an ion from the water.
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