Patents by Inventor MD ABDUL AZIZ
MD ABDUL AZIZ 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: 20190101502Abstract: An electrode that comprises a nanostructured material that comprises pyrolyzed date palm leaves that are obtained from a pyrolysis of an agro-waste containing date palm leaves in an inert gas and in a temperature range of 800 to 1600° C., an electrochemical cell thereof, and a method of determining a hydroquinone concentration in a hydroquinone-containing solution with the electrochemical cell. Various combinations of embodiments are also provided.Type: ApplicationFiled: October 4, 2017Publication date: April 4, 2019Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventor: Md. Abdul AZIZ
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Publication number: 20190085475Abstract: A method for manufacturing a palladium coated doped metal oxide conducting electrode including immersing a metal oxide conducting electrode into an aqueous solution having a palladium precursor salt to form the metal oxide conducting electrode having at least one surface coated with palladium precursor. To form a layer of palladium nanoparticles on the metal oxide conducting electrode the palladium precursor on the metal oxide conducting is reduced with a borohydride compound. The palladium nanoparticles on the metal oxide conducting electrode have an average diameter of 8 nm to 22 nm and are present on the surface of the metal oxide conducting electrode at a density from 1.5×10?3 Pd·nm?2 to 3.5×10?3 Pd·nm?2.Type: ApplicationFiled: November 15, 2018Publication date: March 21, 2019Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Md. Abdul AZIZ, Mohammed Nasiruzzaman SHAIKH, Zain Hassan YAMANI, Wael MAHFOZ, Fatai Olawale BAKARE
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Publication number: 20190085474Abstract: A method for manufacturing a palladium coated doped metal oxide conducting electrode including immersing a metal oxide conducting electrode into an aqueous solution having a palladium precursor salt to form the metal oxide conducting electrode having at least one surface coated with palladium precursor. To form a layer of palladium nanoparticles on the metal oxide conducting electrode the palladium precursor on the metal oxide conducting is reduced with a borohydride compound. The palladium nanoparticles on the metal oxide conducting electrode have an average diameter of 8 nm to 22 nm and are present on the surface of the metal oxide conducting electrode at a density from 1.5×10?3 Pd·nm?2 to 3.5×10?3 Pd·nm?2.Type: ApplicationFiled: November 15, 2018Publication date: March 21, 2019Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Md. Abdul Aziz, Mohammed Nasiruzzaman Shaikh, Zain Hassan Yamani, Wael Mahfoz, Fatai Olawale Bakare
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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
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Patent number: 10179877Abstract: 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.Type: GrantFiled: January 8, 2016Date of Patent: January 15, 2019Assignee: King Fahd University of Petroleum and MineralsInventors: Md. Abdul Aziz, Mohammed Nasiruzzaman Shaikh, Zain Hassan Yamani
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Patent number: 10161052Abstract: A method for manufacturing a palladium coated doped metal oxide conducting electrode including immersing a metal oxide conducting electrode into an aqueous solution having a palladium precursor salt to form the metal oxide conducting electrode having at least one surface coated with palladium precursor. To form a layer of palladium nanoparticles on the metal oxide conducting electrode the palladium precursor on the metal oxide conducting is reduced with a borohydride compound. The palladium nanoparticles on the metal oxide conducting electrode have an average diameter of 8 nm to 22 nm and are present on the surface of the metal oxide conducting electrode at a density from 1.5×10?3 Pd·nm?2 to 3.5×10?3 Pd·nm?2.Type: GrantFiled: February 19, 2016Date of Patent: December 25, 2018Assignee: King Fahd University of Petroleum and MineralsInventors: Md. Abdul Aziz, Mohammed Nasiruzzaman Shaikh, Zain Hassan Yamani, Wael Mahfoz, Fatai Olawale Bakare
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Patent number: 10125159Abstract: 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: May 31, 2017Date of Patent: November 13, 2018Assignee: King Fahd University of Petroleum and MineralsInventors: M. Nasiruzzaman Shaikh, Md. Abdul Aziz, Aasif Helal
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Publication number: 20180099987Abstract: 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: ApplicationFiled: May 31, 2017Publication date: April 12, 2018Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: M. Nasiruzzaman SHAIKH, Md. Abdul AZIZ, Aasif HELAL
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Patent number: 9851325Abstract: The cathodized gold nanoparticle graphite pencil electrode is a sensitive enzymeless electrochemical glucose sensor based on the cathodization of AuNP-GPE. Cyclic voltammetry shows that advantageously, the cathodized AuNP-GPE is able to oxidize glucose partially at low potential (around ?0.27 V). Fructose and sucrose cannot be oxidized at <0.1 V, thus the glucose oxidation peak at around ?0.27 V is suitable enough for selective detection of glucose in the presence of fructose and sucrose. However, the glucose oxidation peak current at around ?0.27 V is much lower which should be enhanced to obtain low detection limit. The AuNP-GPE cathodization increases the oxidation peak current of glucose at around ?0.27 V. The dynamic range of the sensor is in the range between 0.05 to 5.0 mM of glucose with good linearity (R2=0.999). Almost no interference effect was observed for sensing of glucose in the presence of fructose, sucrose and NaCl.Type: GrantFiled: May 22, 2015Date of Patent: December 26, 2017Assignees: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGYInventors: Abdel-Nasser Metwally Aly Kawde, Md. Abdul Aziz
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Publication number: 20170241027Abstract: A method for manufacturing a palladium coated doped metal oxide conducting electrode including immersing a metal oxide conducting electrode into an aqueous solution having a palladium precursor salt to form the metal oxide conducting electrode having at least one surface coated with palladium precursor. To form a layer of palladium nanoparticles on the metal oxide conducting electrode the palladium precursor on the metal oxide conducting is reduced with a borohydride compound. The palladium nanoparticles on the metal oxide conducting electrode have an average diameter of 8 nm to 22 nm and are present on the surface of the metal oxide conducting electrode at a density from 1.5×10?3 Pd·nm?2 to 3.5×10?3 Pd·nm?2.Type: ApplicationFiled: February 19, 2016Publication date: August 24, 2017Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: MD. ABDUL AZIZ, MOHAMMED NASIRUZZAMAN SHAIKH, ZAIN HASSAN YAMANI, WAEL MAHFOZ, FATAI OLAWALE BAKARE
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Publication number: 20170198216Abstract: 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.Type: ApplicationFiled: January 8, 2016Publication date: July 13, 2017Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Md. Abdul Aziz, Mohammed Nasiruzzaman Shaikh, Zain Hassan Yamani
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Publication number: 20150330933Abstract: The cathodized gold nanoparticle graphite pencil electrode is a sensitive enzymeless electrochemical glucose sensor based on the cathodization of AuNP-GPE. Cyclic voltammetry shows that advantageously, the cathodized AuNP-GPE is able to oxidize glucose partially at low potential (around ?0.27 V). Fructose and sucrose cannot be oxidized at <0.1 V, thus the glucose oxidation peak at around ?0.27 V is suitable enough for selective detection of glucose in the presence of fructose and sucrose. However, the glucose oxidation peak current at around ?0.27 V is much lower which should be enhanced to obtain low detection limit. The AuNP-GPE cathodization increases the oxidation peak current of glucose at around ?0.27 V. The dynamic range of the sensor is in the range between 0.05 to 5.0 mM of glucose with good linearity (R2=0.999). Almost no interference effect was observed for sensing of glucose in the presence of fructose, sucrose and NaCl.Type: ApplicationFiled: May 22, 2015Publication date: November 19, 2015Inventors: ABDEL-NASSER METWALLY ALY KAWDE, MD. ABDUL AZIZ
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Publication number: 20150285756Abstract: The pencil graphite electrode modified with porous copper may be used for the detection of 4-nitrophenol (4-NP). The pencil graphite electrode has an outer surface coated with a layer of porous copper. Prior to modification of the pencil graphite electrode, a solution of approximately 0.3 M CuSO4 in an approximately 0.1 M acetate buffer solution (pH 4.8) is prepared. A bare pencil graphite electrode (PGE), extracted from a graphite pencil, is then immersed in this solution. An electrical potential of approximately ?1.2 V is applied for approximately 60 seconds for electrodeposition of copper on the surface of the PGE to form a porous copper layer thereon. The pencil graphite electrode coated with porous copper is then removed from the mixture, washed and dried, and is then ready to be used for the electrochemical detection and quantification of 4-NP.Type: ApplicationFiled: April 2, 2014Publication date: October 8, 2015Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Abdel-Nasser Metwally Aly Kawde, Md. Abdul Aziz
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Publication number: 20150276647Abstract: The amperometric nitrate sensor is a graphite pencil electrode (GPE) having an outer surface electrodeposited (coated) with a layer of cobalt, wherein the layer of cobalt is nanostructured. The graphite pencil electrode modified with nano cobalt may be used for detection and sensing nitrate ions (NO3?). The graphite pencil electrode modified with cobalt is prepared by immersing a pencil graphite electrode in an electrodeposition solution that is prepared by mixing CoCl2 in a solution of potassium chloride; and applying an electrical potential of approximately ?1.3 V for 120 seconds across the graphite pencil electrode to form a graphite pencil electrode modified with nano cobalt. The graphite pencil electrode coated with nanostructured cobalt is then removed from the mixture, washed and dried, and is then ready to be used for the amperometric sensing and quantification of nitrate ions.Type: ApplicationFiled: April 1, 2014Publication date: October 1, 2015Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: ABDEL-NASSER METWALLY ALY KAWDE, MD ABDUL AZIZ
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Publication number: 20150253278Abstract: The cathodized gold nanoparticle graphite pencil electrode is a sensitive enzymeless electrochemical glucose sensor based on the cathodization of AuNP-GPE. Cyclic voltammetry shows that advantageously, the cathodized AuNP-GPE is able to oxidize glucose partially at low potential (around ?0.27 V). Fructose and sucrose cannot be oxidized at <0.1 V, thus the glucose oxidation peak at around ?0.27 V is suitable enough for selective detection of glucose in the presence of fructose and sucrose. However, the glucose oxidation peak current at around ?0.27 V is much lower which should be enhanced to obtain low detection limit. The AuNP-GPE cathodization increases the oxidation peak current of glucose at around ?0.27 V. The dynamic range of the sensor is in the range between 0.05 to 5.0 mM of glucose with good linearity (R2=0.999). Almost no interference effect was observed for sensing of glucose in the presence of fructose, sucrose and NaCl.Type: ApplicationFiled: May 22, 2015Publication date: September 10, 2015Inventors: ABDEL-NASSER METWALLY ALY KAWDE, MD. ABDUL AZIZ
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Publication number: 20150090601Abstract: The cathodized gold nanoparticle graphite pencil electrode is a sensitive enzymeless electrochemical glucose sensor based on the cathodization of AuNP-GPE. Cyclic voltammetry shows that advantageously, the cathodized AuNP-GPE is able to oxidize glucose partially at low potential (around ?0.27 V). Fructose and sucrose cannot be oxidized at <0.1 V, thus the glucose oxidation peak at around ?0.27 V is suitable enough for selective detection of glucose in the presence of fructose and sucrose. However, the glucose oxidation peak current at around ?0.27 V is much lower which should be enhanced to obtain low detection limit. The AuNP-GPE cathodization increases the oxidation peak current of glucose at around ?0.27 V. The dynamic range of the sensor is in the range between 0.05 to 5.0 mM of glucose with good linearity (R2=0.999). Almost no interference effect was observed for sensing of glucose in the presence of fructose, sucrose and NaCl.Type: ApplicationFiled: September 30, 2013Publication date: April 2, 2015Applicants: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY, KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: ABDEL-NASSER METWALLY ALY KAWDE, MD. ABDUL AZIZ
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Patent number: 8968825Abstract: The disposable palladium nanoparticle-modified graphite pencil electrode (PdNP-GPE) is a graphite pencil electrode having palladium nanoparticles disposed on the surface of the electrode. The electrode is prepared by adding ascorbic acid to an aqueous solution of ammonium tetrachloropalladate(II) [(NH4)2PdCl4] at room temperature to form the palladium nanoparticles (PdNPs), immersing a GPE in the aqueous solution of PdNPs, and heating the solution to about 75° C. to deposit the PdNPs on the GPE. The palladium nanoparticle modified graphite pencil electrode may be used in an electrochemical cell for quantitative analysis of hydrogen peroxide content in an unknown solution.Type: GrantFiled: August 22, 2013Date of Patent: March 3, 2015Assignees: King Fahd University of Petroleum and Minerals, King Abdulaziz City for Science and TechnologyInventors: Abdel-Nasser Metwally Aly Kawde, MD Abdul Aziz
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Publication number: 20150053555Abstract: The pencil graphite electrode modified with gold nanoparticles can be used for the detection of hydrazine. The pencil graphite electrode has an outer surface coated with gold nanoparticles. Prior to modification of the pencil graphite electrode, equal volumes of an aqueous solution of ascorbic acid and an aqueous solution of gold(III) chloride are mixed to form a mixture containing gold nanoparticles. A pencil graphite electrode is then immersed in the mixture and is heated at a temperature of about 75° C. to form the pencil graphite electrode coated with gold nanoparticles. The pencil graphite electrode coated with gold nanoparticles is then removed from the mixture, washed and dried, and may then be used for the to electrochemical detection of hydrazine.Type: ApplicationFiled: August 22, 2013Publication date: February 26, 2015Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: ABDEL-NASSER METWALLY ALY KAWDE, MD ABDUL AZIZ
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Publication number: 20150053554Abstract: The disposable palladium nanoparticle-modified graphite pencil electrode (PdNP-GPE) is a graphite pencil electrode having palladium nanoparticles disposed on the surface of the electrode. The electrode is prepared by adding ascorbic acid to an aqueous solution of ammonium tetrachloropalladate(II) [(NH4)2PdCl4] at room temperature to form the palladium nanoparticles (PdNPs), immersing a GPE in the aqueous solution of PdNPs, and heating the solution to about 75° C. to deposit the PdNPs on the GPE. The palladium nanoparticle modified graphite pencil electrode may be used in an electrochemical cell for quantitative analysis of hydrogen peroxide content in an unknown solution.Type: ApplicationFiled: August 22, 2013Publication date: February 26, 2015Applicants: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY, KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Abdel-Nasser Metwally Aly KAWDE, MD ABDUL AZIZ