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公开(公告)号：US12243686B2
公开(公告)日：2025-03-04
申请号：US18332048
申请日：2023-06-09
Inventor： Abubakar Dahiru Shuaibu , Atif Saeed Alzahrani , Md. Abdul Aziz
Abstract: A supercapacitor including a gel electrolyte and two electrodes having a substrate, date stone activated carbon, a conductive carbon compound different from the date stone activated carbon, and a binding compound. A mixture of the date stone activated carbon, the conductive carbon compound, and the binding compound partially coats a surface of the substrate. The two electrodes are assembled in a symmetrical layered configuration with the surfaces coated with the mixture facing each other. The gel electrolyte is present between the surfaces coated with the mixture to form the supercapacitor. The gel electrolyte is a mixture of H2SO4, polyvinyl alcohol, and anthraquinone. Particles of the date stone activated carbon have a nanosheet morphology, and the nanosheets are stacked on top of each other to form a hierarchical structure.
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公开(公告)号：US12157114B2
公开(公告)日：2024-12-03
申请号：US18607139
申请日：2024-03-15
Inventor： M. Nasiruzzaman Shaikh , S. M. Shakil Hussain , Md. Abdul Aziz
Abstract: A method for making a magnetic-nanoparticle-supported catalyst includes reacting a ferrocenyl phosphine compound with an amino alcohol compound to form a ligand having a phosphine group, an amine group and at least one hydroxyl group; anchoring the ligand to a surface of magnetic nanoparticles via an oxygen atom of the hydroxyl group to form a ligand complex; combining the ligand complex with a metal precursor comprising Rh to bind the metal precursor with the ligand complex and form the magnetic-particle-supported catalyst. The magnetic-particle-supported catalyst is a Rh complex of magnetic-Fe3O4-nanoparticle-supported ferrocenyl phosphine catalyst.
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公开(公告)号：US11980875B2
公开(公告)日：2024-05-14
申请号：US17893841
申请日：2022-08-23
Inventor： M. Nasiruzzaman Shaikh , S. M. Shakil Hussain , Md. Abdul Aziz
CPC classification number: B01J31/1625 , B01J31/2414 , B01J35/23 , B01J35/393 , B01J37/16 , B01J2231/321 , B82Y30/00
Abstract: A method for making a magnetic-nanoparticle-supported catalyst includes reacting a ferrocenyl phosphine compound with an amino alcohol compound to form a ligand having a phosphine group, an amine group and at least one hydroxyl group; anchoring the ligand to a surface of magnetic nanoparticles via an oxygen atom of the hydroxyl group to form a ligand complex; combining the ligand complex with a metal precursor comprising Rh to bind the metal precursor with the ligand complex and form the magnetic-particle-supported catalyst. The magnetic-particle-supported catalyst is a Rh complex of magnetic-Fe3O4-nanoparticle-supported ferrocenyl phosphine catalyst.
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公开(公告)号：US11845894B1
公开(公告)日：2023-12-19
申请号：US18179847
申请日：2023-03-07
Inventor： Bashirul Haq , Md. Abdul Aziz , Abbad Saeed Hakeem , Dhafer Al Shehri
CPC classification number: C09K8/584 , E21B43/16 , C09K2208/04 , C09K2208/10
Abstract: A method of recovering a hydrocarbon from a reservoir is described. The method includes injecting an oil recovery formulation into the reservoir, and collecting the hydrocarbon from the reservoir. The oil recovery formulation includes date leaf particles selected from the group consisting of carboxylic acid functionalized date leaf particles and non-functionalized date leaf particles. The date leaf particles have an average particle size of 30 to 950 nanometers (nm). A method for preparing the carboxylic acid functionalized date leaf particles is also provided.
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公开(公告)号：US11795555B2
公开(公告)日：2023-10-24
申请号：US15903732
申请日：2018-02-23
Inventor： Md. Abdul Aziz , Mohammed Ameeh Ahmed Qasem
IPC: C25B11/077 , C01G53/04 , B01J37/08 , B01J23/755 , C25B1/04 , C25B11/00 , C25B11/043
CPC classification number: C25B11/077 , B01J23/755 , B01J37/08 , C01G53/04 , C25B1/04 , C25B11/00 , C25B11/043 , C01P2002/72 , C01P2002/82 , C01P2002/85 , C01P2002/88 , C01P2004/03 , C01P2004/50 , C01P2004/54 , C01P2004/64
Abstract: A method of making NiO nanoparticles is described, as well as a method of using NiO nanoparticles as an electrocatalyst component to a porous carbon electrode. The carbon electrode may be made of carbonized filter paper. Together, this carbon-supported NiO electrode may be used for water electrolysis. Using a pamoic acid salt in the NiO nanoparticle synthesis leads to smaller and monodisperse nanoparticles, which support higher current densities.
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Patent Agency Ranking
公开(公告)号：US11712680B2
公开(公告)日：2023-08-01
申请号：US17820111
申请日：2022-08-16
Inventor： M. Nasiruzzaman Shaikh , Md. Abdul Aziz
IPC: B01J23/46 , B01J35/00 , B01J35/02 , B01J35/08 , B01J35/10 , C07C209/32 , B01J37/08 , B01J37/02 , B01J23/745 , C07C211/45 , C07C211/50
CPC classification number: B01J23/464 , B01J35/0033 , B01J35/023 , B01J35/08 , B01J35/1019 , B01J37/0209 , B01J37/08 , C07C209/32 , B01J23/745 , C07C211/45 , C07C211/50
Abstract: A supported catalyst having rhodium particles with an average diameter of less than 1 nm disposed on a support material containing magnetic iron oxide (e.g. Fe3O4). A method of producing the supported catalyst and a process of reducing nitroarenes to corresponding aromatic amines employing the supported catalyst with a high product yield are also described. The supported catalyst may be recovered with ease using an external magnet and reused.
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公开(公告)号：US11305995B2
公开(公告)日：2022-04-19
申请号：US16812798
申请日：2020-03-09
Inventor： Md. Abdul Aziz , Shaik Inayath Basha , Abbas Saeed Hakeem , Mohammed Maslehuddin , Shamsad Ahmad
Abstract: A method of producing submicron carbon particles from oil ash. The method comprises pyrolyzing the oil ash to produce a pyrolyzed oil ash and milling the pyrolyzed oil ash to produce carbon particles having a mean particle size in the submicron regime. The method produces submicron carbon particles which have a very high carbon content (90 to 99 atom %) and a very low content of oxygen, the particles having a ratio of carbon to oxygen ratio of 10:1 to 99:1. The size of the particles may be controlled by the duration of the milling. The submicron carbon particles are devoid of functionalities containing carbon-oxygen double bonds as measured by Raman spectroscopy and X-ray photoelectron spectroscopy (XPS).
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公开(公告)号：US11118108B2
公开(公告)日：2021-09-14
申请号：US16222687
申请日：2018-12-17
Inventor： Md. Abdul Aziz , Mohammed Nasiruzzaman Shaikh , Zain Hassan Yamani
Abstract: Monodisperse carboxylate functionalized gold nanoparticles comprising a capping agent layer of pamoic acid and colloidal suspensions thereof are disclosed. These gold nanoparticles have an average particle size of greater than 15 nm or less than 8 nm and demonstrate significant fluorescent properties. In addition, a method for the size controlled preparation of these monodisperse carboxylate functionalized gold nanoparticles wherein pamoic acid acts as both a reducing and capping agent and wherein the size of the particles can be controlled by the pH of the process is disclosed. In addition, a method for the size controlled preparation of these monodisperse carboxylate functionalized gold nanoparticles utilizing seed mediated growth is disclosed.
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公开(公告)号：US12162001B2
公开(公告)日：2024-12-10
申请号：US18607097
申请日：2024-03-15
Inventor： M. Nasiruzzaman Shaikh , S. M. Shakil Hussain , Md. Abdul Aziz
Abstract: A method for making a magnetic-nanoparticle-supported catalyst includes reacting a ferrocenyl phosphine compound with an amino alcohol compound to form a ligand having a phosphine group, an amine group and at least one hydroxyl group; anchoring the ligand to a surface of magnetic nanoparticles via an oxygen atom of the hydroxyl group to form a ligand complex; combining the ligand complex with a metal precursor comprising Rh to bind the metal precursor with the ligand complex and form the magnetic-particle-supported catalyst. The magnetic-particle-supported catalyst is a Rh complex of magnetic-Fe3O4-nanoparticle-supported ferrocenyl phosphine catalyst.
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公开(公告)号：US11702756B2
公开(公告)日：2023-07-18
申请号：US16285370
申请日：2019-02-26
Inventor： Muhammad Ali Ehsan , Md. Abdul Aziz , Abbas Saeed Hakeem
IPC: C23C16/40 , C25B11/091 , C25B1/04 , B01J23/75 , B01J37/02 , B01J35/00 , C25B11/051 , C25B11/057 , C23C16/448
CPC classification number: C25B11/091 , B01J23/75 , B01J35/0033 , B01J37/0244 , C25B1/04 , C25B11/051 , C25B11/057 , C23C16/405 , C23C16/4486
Abstract: A synthetic methodology for robust, nanostructured films of cobalt oxide over metal evaporated gold or similar material layer of, e.g., 50 nm, directly onto glass or other substrates via aerosol assisted chemical vapor deposition (AACVD). This approach allows film growth rates in the range of, e.g., 0.8 nm/s, using a commercially available precursor, which is ˜10-fold the rate of electrochemical synthetic routes. Thus, 250 nm thick cobalt oxide films may be generated in only 5 minutes of deposition time. The water oxidation reaction for such films may start at ˜0.6 V vs Ag/AgCl with current density of 10 mA/cm2 and is achieved at ˜0.75 V corresponding to an overpotential of 484 mV. This current density is further increased to 60 mA/cm2 at ˜1.5 V (vs Ag/AgCl). Electrochemically active surface area (ECSA) calculations indicate that the synergy between a Au-film, acting as electron sink, and the cobalt oxide film(s), acting as catalytic layer(s), are more pronounced than the surface area effects.
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