-
公开(公告)号：US11807554B2
公开(公告)日：2023-11-07
申请号：US16211775
申请日：2018-12-06
CPC分类号： C02F1/288 , C08J3/2053 , C08J11/26 , C08K7/04 , C02F2101/322 , C02F2101/325 , C02F2101/327 , C02F2305/08 , C08J2325/06 , C08K3/04
摘要： Polystyrene waste, such as Styrofoam® waste, and carbon nanofibers may be used to produce highly hydrophobic compositions or composites that can separate oil and water. Methods for purifying an aqueous solution may include: passing the aqueous solution, including a hydrophobic organic substance, over or through a surface including a polystyrene-CNF composition, thereby producing an aqueous product including less of the hydrophobic organic substance; and optionally, passing the aqueous product over or through the surface at least one more time.
-
公开(公告)号：US11078589B2
公开(公告)日：2021-08-03
申请号：US16553749
申请日：2019-08-28
摘要： Disclosed is a copper coated stainless-steel hydrophobic mesh and a method for synthesizing the hydrophobic mesh. In the method, a stainless-steel mesh is sonicated in a solution of acetone and ethanol, and then electroplated in a copper solution to form a copper coating on the surface of the mesh. The copper-coated stainless-steel mesh is treated with an oxidizing solution having an oxidizing potential applied to it. The mesh is then washed with water and dried. The copper-coated stainless-steel mesh is then immersed in a lauric acid solution. The mesh is then rinsed with ethanol to remove adsorbed lauric acid. After drying, the so-synthesized copper-coated stainless-steel hydrophobic mesh is characterized in that it has hydrophobic branches of lauric acid.
-
公开(公告)号：US20200317831A1
公开(公告)日：2020-10-08
申请号：US16373041
申请日：2019-04-02
IPC分类号： C08F12/08 , B01J20/20 , B01J20/26 , C02F1/28 , C08J5/04 , C08F283/00 , C08F2/48 , C08F2/34 , C08F8/00 , C08L51/00 , C08L75/04
摘要： Vapor phase polymerization can be used to synthesize a 3D porous network of polystyrene-containing, branched carbon nanofibers on polyurethane(s), optionally using natural light (NL) initiation. NL styrene polymerization in a confined reactor containing CNF-grafted PU can provide a stable porous network. The NL can vaporize the styrene by increasing the reactor temperature and generate styrene radicals. Without CNF, the polymerization on polyurethane (PU) provides a delicate, fragile surface. Radical styrene in vapor phase can interact with CNF to produce polystyrene branches by generating active sites on CNF, while reinforcing the 3D porous structure. After polymerization, the PU surface area increased from 9 to 184 m2/g and pore size decreased from 2567 to 10 Å. 3D porous networks of NL-assisted PS branched CNF supported PU can provide a hydrophobic, oleophilic surface with a water contact angle of approx 148±3°, rapidly gravity separating hexane and water without external force.
-
公开(公告)号：US11767229B1
公开(公告)日：2023-09-26
申请号：US17819336
申请日：2022-08-12
发明人： Ibrahim Khan , Muhammad Ashraf , Nadeem Baig , A. H. Hendi
CPC分类号： C01G31/00 , B01J23/22 , B01J23/72 , B01J35/004
摘要： A hybrid photoactive heterojunction including a copper vanadate, Cu2V2O7 (CVO) and a zinc vanadate, Zn2V2O6 (ZVO). Particles of the ZVO are dispersed in particles of the CVO to form the hybrid photoactive heterojunction. The hybrid photoactive heterojunction in the form of a photoactive film includes a substrate which is at least partially coated with the hybrid photoactive heterojunction. A method of photodegrading a dye includes contacting the photoactive film and the dye in a solution and exposing the solution to light. A method of photoelectrochemically oxidizing water includes contacting the photoactive film with water in a solution and exposing the solution to light.
-
公开(公告)号：US11435288B1
公开(公告)日：2022-09-06
申请号：US17745358
申请日：2022-05-16
发明人： Shahid Ali , Muhammad Mansha , Safyan Akram Khan , Nadeem Baig
IPC分类号： G01N21/64 , G01N33/2028 , G01N21/17
摘要： A method for detecting mercury (Hg2+) ions in an aqueous solution is described. The method includes contacting the aqueous solution with a chemosensor to form a mixture; and monitoring a change in a fluorescence emission profile of the chemosensor in the mixture to determine the presence or absence of Hg2+ ions in the aqueous solution. The chemosensor includes pyrene silica nanoparticles where at least one pyrene is bonded to a surface of a silica nanoparticle through an amide bond with a formula of, pyrene-C(═O)NHR-silica nanoparticle, and where R is an alkyl chain.
-
6.发明申请公开(公告)号：US20200290015A1
公开(公告)日：2020-09-17
申请号：US16351720
申请日：2019-03-13
摘要： A composite of polyurethane foam grafted with carbon nanofibers is described. This composite foam may be made by contacting and drying a polyurethane foam with a suspension of carbon nanofibers and then drying. Additional carbon nanofiber layers may be added with repeated contacting. The composite film has a high surface area of 276 m2/g and a hydrophobic character that may be exploited for separating an oil phase from water.
-
7.发明授权公开(公告)号：US10156539B2
公开(公告)日：2018-12-18
申请号：US15243073
申请日：2016-08-22
摘要： A modified graphite electrode comprising a coating of electrochemically reduced graphene oxide. The modified graphite electrode may be employed in detecting of uric acid. A sensing device comprising the modified graphite electrode and a method of making the modified graphite electrode are described herein.
-
8.发明授权公开(公告)号：US11613479B2
公开(公告)日：2023-03-28
申请号：US16521202
申请日：2019-07-24
摘要： A composite material of polyurethane foam having a layer of reduced graphene oxide and polystyrene is described. This composite material may be made by contacting a polyurethane foam with a suspension of reduced graphene oxide, drying, and then irradiating in the presence of styrene vapor. The composite material has a hydrophobic surface that may be exploited for separating a nonpolar phase, such as oil, from an aqueous solution.
-
公开(公告)号：US11453599B1
公开(公告)日：2022-09-27
申请号：US17714580
申请日：2022-04-06
发明人： Ibrahim Khan , Muhammad Ashraf , Nadeem Baig , A. H. Hendi
摘要： A hybrid photoactive heterojunction including a copper vanadate, Cu2V2O7 (CVO) and a zinc vanadate, Zn2V2O6 (ZVO). Particles of the ZVO are dispersed in particles of the CVO to form the hybrid photoactive heterojunction. The hybrid photoactive heterojunction in the form of a photoactive film includes a substrate which is at least partially coated with the hybrid photoactive heterojunction. A method of photodegrading a dye includes contacting the photoactive film and the dye in a solution and exposing the solution to light. A method of photoelectrochemically oxidizing water includes contacting the photoactive film with water in a solution and exposing the solution to light.
-
公开(公告)号：US11306164B2
公开(公告)日：2022-04-19
申请号：US16373041
申请日：2019-04-02
IPC分类号： B01J20/00 , C08F12/08 , B01J20/20 , B01J20/26 , C02F1/28 , C08J5/04 , C08F283/00 , C08F2/34 , C08F8/00 , C08L51/00 , C08L75/04 , C08F2/48 , C02F103/36
摘要： Vapor phase polymerization can be used to synthesize a 3D porous network of polystyrene-containing, branched carbon nanofibers on polyurethane(s), optionally using natural light (NL) initiation. NL styrene polymerization in a confined reactor containing CNF-grafted PU can provide a stable porous network. The NL can vaporize the styrene by increasing the reactor temperature and generate styrene radicals. Without CNF, the polymerization on polyurethane (PU) provides a delicate, fragile surface. Radical styrene in vapor phase can interact with CNF to produce polystyrene branches by generating active sites on CNF, while reinforcing the 3D porous structure. After polymerization, the PU surface area increased from 9 to 184 m2/g and pore size decreased from 2567 to 10 Å. 3D porous networks of NL-assisted PS branched CNF supported PU can provide a hydrophobic, oleophilic surface with a water contact angle of approx 148±3°, rapidly gravity separating hexane and water without external force.
-
-
-
-
-
-
-
-
-
搜索结果
15 条记录 (耗时 0.02 秒)
