Patents by Inventor Aasif HELAL
Aasif HELAL has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240011906Abstract: An europium doped Ni(BTC) Metal Organic Framework (MOF), Eu@Ni(BTC), as a sensor for detecting heteroaromatic compounds. Eu@Ni(BTC) shows selectivity towards thiophene and pyrrole with a detection limit of 0.2 and 8.4 ppm for thiophene and pyrrole, respectively. The sensor can be easily regenerated and can be used to analyze thiophene in water.Type: ApplicationFiled: July 5, 2022Publication date: January 11, 2024Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Aasif HELAL, Mohammad Mizanur RAHMAN, Muhammed NAEEM, Md. Eyasin ARAFAT, Muhammad USMAN
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Publication number: 20230400409Abstract: A method of detecting Hg2+ ions in an aqueous solution is described. The method includes contacting the aqueous solution with a metal-organic framework (MOF) chemosensor composite to form a mixture and monitoring a change in an absorption and/or a fluorescence profile of the MOF chemosensor composite in the mixture to determine a presence or absence of Hg2+ ions in the aqueous solution. The MOF chemosensor composite includes fluorescein hydrazide (FH); and a MOF, including nickel as a metal ion and at least one trimesic acid (BTC) ligand. A hydrazide group on the fluorescein hydrazide coordinates to the metal ion of the MOF.Type: ApplicationFiled: June 14, 2022Publication date: December 14, 2023Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Aasif HELAL, Muhammed NAEEM, Mohammed FETTOUHI, Md. Hasan ZAHIR
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Patent number: 11767456Abstract: A method to form a phase change material (PCM). The method includes preparing a polymer solution by mixing an amount of a polymer in a solvent and mixing the polymer solution with an UiO-66 metal-organic framework (MOF) to form a composite. The polymer is a polyethylene glycol (PEG). The method further includes subjecting the composite to ultrasonic agitation and evaporating the solvent from the composite to form the PCM. After the evaporation of the solvent, particles of the PCM exhibit rounded octahedral structures.Type: GrantFiled: December 23, 2022Date of Patent: September 26, 2023Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Md. Hasan Zahir, Aasif Helal, Abbas S. Hakeem
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Patent number: 11555137Abstract: A method to form a phase change material (PCM). The method includes preparing a polymer solution by mixing an amount of a polymer in a solvent and mixing the polymer solution with an UiO-66 metal-organic framework (MOF) to form a composite. The polymer is a polyethylene glycol (PEG). The method further includes subjecting the composite to ultrasonic agitation and evaporating the solvent from the composite to form the PCM. After the evaporation of the solvent, particles of the PCM exhibit rounded octahedral structures.Type: GrantFiled: May 23, 2022Date of Patent: January 17, 2023Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Md. Hasan Zahir, Aasif Helal, Abbas S. Hakeem
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Patent number: 11529621Abstract: A method of fixating CO2 to form a substituted oxazolidinone is described. The method includes mixing a nickel-based metal-organic framework (Ni-MOF) catalyst of formula [Ni3(BTC)2(H2O)3]·(DMF)3(H2O)3, a cocatalyst, an aromatic amine, and at least one epoxide to form a reaction mixture, and further contacting the reaction mixture with a gas stream containing carbon dioxide to react the carbon dioxide in the gas stream with the epoxide and the aromatic amine to form a substituted oxazolidinone mixture. The method further includes adding a polar protic solvent to the substituted oxazolidinone mixture, centrifuging, and filtering to produce a recovered Ni-MOF; and further washing the recovered Ni-MOF with an organochloride solvent and drying for at least 5 hours to produce a recycled Ni-MOF.Type: GrantFiled: June 3, 2022Date of Patent: December 20, 2022Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Aasif Helal, Mohammed Fettouhi, Md. Eyasin Arafat, Mohd Yusuf Khan, Mohammed Ahmed Sanhoob
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Patent number: 11498906Abstract: A method of fixating carbon dioxide (CO2) to a substituted oxazolidinone. The method includes mixing a metal-organic framework (MOF), a co-catalyst, at least one para-substituted aromatic amine, and at least one epoxide to form a mixture. The method further includes contacting the mixture with a gas stream containing CO2 to react the CO2 in the gas stream with the epoxide and para-substituted aromatic amine to form a substituted oxazolidinone mixture. The MOF is a UiO-66-X MOF, where X is of formula (I) wherein at least one of R1 to R4 is an allyloxy group, and R1 to R4 are independently an allyloxy group or a hydrogen.Type: GrantFiled: April 25, 2022Date of Patent: November 15, 2022Assignee: King Fahd University of Petroleum and MineralsInventors: Aasif Helal, Muhammad Usman, Mahmoud Mohamed Abdelnaby, Md. Eyasin Arafat
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Patent number: 11479482Abstract: A method of water uptake is provided. The method includes contacting a hydrogen-bonded organic framework (HOF) with water to form a mixture where the HOF comprises hydrogen bonded units of trimesic acid and guanazole. The HOF has a sheet structure, where the sheets form an intercrossed macroporous network with pores on a surface. The HOF absorbs at least a portion of the water in the mixture.Type: GrantFiled: May 31, 2022Date of Patent: October 25, 2022Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Mohd Yusuf Khan, Abuzar Khan, Aasif Helal, Zain H. Yamani
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Patent number: 11472779Abstract: A hydrogen-bonded organic framework (HOF) and a method of making the HOF. The HOF has at least one amine substituted organic linker and at least one carboxylic acid-based organic linker. The HOF is prepared by dissolving the linkers separately in water and mixing the aqueous solutions, without using any organic solvents, additional catalysts, or any other reagents.Type: GrantFiled: May 13, 2022Date of Patent: October 18, 2022Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Mohd Yusuf Khan, Abuzar Khan, Aasif Helal, Zain H. Yamani
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Patent number: 11185843Abstract: A zirconium metal-organic framework, which is a coordination product formed between zirconium ion clusters and a linker that links together adjacent zirconium ion clusters, wherein the linker is of formula (I) wherein R1 is hydrogen or an optionally substituted alkyl, and R2 to R4 are independently hydrogen, an optionally substituted alkyl, an optionally substituted aryl, or an optionally substituted arylalkyl. A method of capturing CO2 from a gas mixture with the zirconium metal-organic framework.Type: GrantFiled: November 7, 2019Date of Patent: November 30, 2021Assignee: King Fahd University of Petroleum and MineralsInventors: Muhammad Usman, Aasif Helal
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Patent number: 11124529Abstract: A method of detecting Pd2+ in an aqueous solution is described. The method involves mixing an Eu-based metal organic framework with the aqueous solution and measuring the amount of fluorescence quenching. The fluorescence quenching is specific to Pd2+ and also allows a 44 ppb detection limit of Pd2+. The Eu-based metal organic framework may be treated with a metal chelator and reused for sensitive detection of Pd2+.Type: GrantFiled: July 3, 2019Date of Patent: September 21, 2021Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Aasif Helal, Zain Hassan Abdallah Yamani, Amir Al-Ahmed
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Patent number: 11124522Abstract: A palladium selective chemosensor based on a fluorescein-allyloxy benzene scaffold and a method of detecting palladium ions in a fluid sample with the chemosensor, whereby the fluid sample is contacted with a solution that includes water and the chemosensor to form a mixture. An ultraviolet visible absorption profile and/or a fluorescence emission profile of the mixture is measured to determine a presence or absence of palladium ions in the fluid sample, wherein the chemosensor has an ultraviolet visible absorption peak at 315 to 325 nm and a fluorescence emissions peak at 380 to 400 nm in the solution, and wherein a bathochromic shift in the ultraviolet visible absorption peak to 338 to 342 nm in the mixture and/or a bathochromic shift in the fluorescence emissions peak to 530 to 550 nm in the mixture indicates the presence of palladium ions in the fluid sample.Type: GrantFiled: June 12, 2019Date of Patent: September 21, 2021Assignee: King Fahd University of Petroleum and MineralsInventor: Aasif Helal
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Patent number: 11124530Abstract: A zirconium metal-organic framework, which is a coordination product formed between zirconium ion clusters and a linker that links together adjacent zirconium ion clusters, wherein the linker is of formula (I) wherein R1 to R4 are independently hydrogen, an optionally substituted alkyl, an optionally substituted aryl, an optionally substituted arylalkyl, an optionally substituted alkoxy, a hydroxyl, a carboxyl, a halo, a nitro, or a cyano, R5 is hydrogen, an optionally substituted alkyl, an optionally substituted alkoxy, an amino, a hydroxyl, a carboxyl, a halo, a nitro, or a cyano, and R6 and R7 are independently a hydrogen or an optionally substituted alkyl group having 1 to 4 carbon atoms. A method of detecting copper cations and/or chromate anions in a fluid sample with zirconium metal-organic framework.Type: GrantFiled: October 22, 2019Date of Patent: September 21, 2021Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Aasif Helal, M. Nasiruzzaman Shaikh
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Publication number: 20210138433Abstract: A zirconium metal-organic framework, which is a coordination product formed between zirconium ion clusters and a linker that links together adjacent zirconium ion clusters, wherein the linker is of formula (I) wherein R1 is hydrogen or an optionally substituted alkyl, and R2 to R4 are independently hydrogen, an optionally substituted alkyl, an optionally substituted aryl, or an optionally substituted arylalkyl. A method of capturing CO2 from a gas mixture with the zirconium metal-organic framework.Type: ApplicationFiled: November 7, 2019Publication date: May 13, 2021Applicant: King Fahd University of Petroleum and MineralsInventors: Muhammad USMAN, Aasif HELAL
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Publication number: 20210002304Abstract: A method of detecting Pd2+ in an aqueous solution is described. The method involves mixing an Eu-based metal organic framework with the aqueous solution and measuring the amount of fluorescence quenching. The fluorescence quenching is specific to Pd2+ and also allows a 44 ppb detection limit of Pd2+. The Eu-based metal organic framework may be treated with a metal chelator and reused for sensitive detection of Pd2+.Type: ApplicationFiled: July 3, 2019Publication date: January 7, 2021Applicant: King Fahd University of Petroleum and MineralsInventors: Aasif HELAL, Zain Hassan Abdallah YAMANI, Amir AL-AHMED
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Publication number: 20200392148Abstract: A palladium selective chemosensor based on a fluorescein-allyloxy benzene scaffold and a method of detecting palladium ions in a fluid sample with the chemosensor, whereby the fluid sample is contacted with a solution that includes water and the chemosensor to form a mixture. An ultraviolet visible absorption profile and/or a fluorescence emission profile of the mixture is measured to determine a presence or absence of palladium ions in the fluid sample, wherein the chemosensor has an ultraviolet visible absorption peak at 315 to 325 nm and a fluorescence emissions peak at 380 to 400 nm in the solution, and wherein a bathochromic shift in the ultraviolet visible absorption peak to 338 to 342 nm in the mixture and/or a bathochromic shift in the fluorescence emissions peak to 530 to 550 nm in the mixture indicates the presence of palladium ions in the fluid sample.Type: ApplicationFiled: June 12, 2019Publication date: December 17, 2020Applicant: King Fahd University of Petroleum and MineralsInventor: Aasif HELAL
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Patent number: 10463391Abstract: A functionalized magnetic nanoparticle including an organometallic sandwich compound and a magnetic metal oxide. The functionalized magnetic nanoparticle may be reacted with a metal precursor to form in a catalyst for various C—C bond forming reactions. The catalyst may be recovered with ease by attracting the catalyst with a magnet.Type: GrantFiled: October 4, 2018Date of Patent: November 5, 2019Assignee: King Fahd University of Petroleum and MineralsInventors: M. Nasiruzzaman Shaikh, Md. Abdul Aziz, Aasif Helal
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Patent number: 10436791Abstract: Gold nanoparticles functionalized with thiolated, bidentate Schiff base ligands. The Schiff base ligands form a ligand monolayer surrounding and binding to the surface of a gold nanoparticle core through Au—S linkages. The functionalized gold nanoparticle composites have a spherical shape, an average diameter of 7-15 nm and a narrow particle size distribution. Methods of assessing these functionalized gold nanoparticle composites as fluorescent probes in Fe(III) chemosensing applications, methods of preparing the functionalized gold nanoparticle composites and methods of detecting Fe(III) ions with the same are also provided.Type: GrantFiled: March 28, 2018Date of Patent: October 8, 2019Assignee: King Fahd University of Petroleum and MineralsInventors: Mohammed Nasiruzzaman Shaikh, Aasif Helal, Abiola Azeez Jimoh
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Patent number: 10370397Abstract: A functionalized magnetic nanoparticle including an organometallic sandwich compound and a magnetic metal oxide. The functionalized magnetic nanoparticle may be reacted with a metal precursor to form a catalyst for various C—C bond forming reactions. The catalyst may be recovered with ease by attracting the catalyst with a magnet.Type: GrantFiled: October 4, 2018Date of Patent: August 6, 2019Assignee: Kind Fahd University of Petroleum and MineralsInventors: M. Nasiruzzaman Shaikh, Md. Abdul Aziz, Aasif Helal
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Publication number: 20190031697Abstract: A functionalized magnetic nanoparticle including an organometallic sandwich compound and a magnetic metal oxide. The functionalized magnetic nanoparticle may be reacted with a metal precursor to fol in a catalyst for various C—C bond forming reactions. The catalyst may be recovered with ease by attracting the catalyst with a magnet.Type: ApplicationFiled: October 4, 2018Publication date: January 31, 2019Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: M. Nasiruzzaman SHAIKH, Md. Abdul AZIZ, Aasif HELAL
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Publication number: 20190029718Abstract: A functionalized magnetic nanoparticle including an organometallic sandwich compound and a magnetic metal oxide. The functionalized magnetic nanoparticle may be reacted with a metal precursor to form in a catalyst for various C—C bond forming reactions. The catalyst may be recovered with ease by attracting the catalyst with a magnet.Type: ApplicationFiled: October 4, 2018Publication date: January 31, 2019Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: M. Nasiruzzaman SHAIKH, Md. Abdul Aziz, Aasif Helal