公开(公告)号：US20210002304A1

公开(公告)日：2021-01-07

申请号：US16502557

申请日：2019-07-03

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Aasif HELAL ,  Zain Hassan Abdallah YAMANI ,  Amir AL-AHMED

IPC: C07F5/00 ,  G01N33/20 ,  G01N21/31 ,  G01N21/64

Abstract: 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+.

公开(公告)号：US20210138433A1

公开(公告)日：2021-05-13

申请号：US16677277

申请日：2019-11-07

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Muhammad USMAN ,  Aasif HELAL

IPC: B01J20/22 ,  B01D53/04 ,  B01J20/30 ,  B01J20/28

Abstract: 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.

公开(公告)号：US20180217152A1

公开(公告)日：2018-08-02

申请号：US15937958

申请日：2018-03-28

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Mohammed Nasiruzzaman SHAIKH ,  Aasif HELAL ,  Abiola Azeez JIMOH

IPC: G01N33/58 ,  G01N33/543 ,  G01N33/84 ,  G01N33/553 ,  C07F1/00 ,  G01N21/64

CPC classification number: G01N33/587 ,  C07F1/005 ,  G01N21/6428 ,  G01N21/643 ,  G01N33/54346 ,  G01N33/553 ,  G01N33/84 ,  G01N2800/04

Abstract: 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.

公开(公告)号：US20180194944A1

公开(公告)日：2018-07-12

申请号：US15917274

申请日：2018-03-09

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Aasif HELAL

IPC: C09B26/02 ,  G01N33/84 ,  C09B11/08 ,  G01N33/58 ,  G01N33/18

CPC classification number: C09B26/02 ,  C09B11/08 ,  G01N33/1813 ,  G01N33/582 ,  G01N33/84

Abstract: Fluorescent Schiff base compounds comprising a xanthene dye based moiety and an alkyl imidazole moiety. Methods of assessing these fluorescent Schiff base compounds as fluorescent probes for metal ions in Cu2+ chemosensing applications, methods of preparing the fluorescent Schiff base compounds and methods of detecting Cu2+ ions with the same are also provided.

公开(公告)号：US20230400409A1

公开(公告)日：2023-12-14

申请号：US17840045

申请日：2022-06-14

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Aasif HELAL ,  Muhammed NAEEM ,  Mohammed FETTOUHI ,  Md. Hasan ZAHIR

IPC: G01N21/3577

CPC classification number: G01N21/3577 ,  G01N2021/174

Abstract: 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.

公开(公告)号：US20180099987A1

公开(公告)日：2018-04-12

申请号：US15610269

申请日：2017-05-31

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： M. Nasiruzzaman SHAIKH ,  Md. Abdul AZIZ ,  Aasif HELAL

IPC: C07F15/02 ,  C07C45/50 ,  C07C2/68 ,  B01J31/28 ,  B01J31/22 ,  B01J35/00 ,  B01J35/02

CPC classification number: C07F15/02 ,  B01J31/2295 ,  B01J31/28 ,  B01J35/0013 ,  B01J35/0033 ,  B01J35/023 ,  B01J2231/321 ,  B01J2531/822 ,  B01J2531/824 ,  B01J2531/842 ,  C07C2/861 ,  C07C17/269 ,  C07C41/30 ,  C07C45/50 ,  C07C45/505 ,  C07C201/12 ,  C07C2531/22 ,  C07C2531/28 ,  C07F17/02 ,  C07C47/228 ,  C07C47/24 ,  C07C47/277 ,  C07C15/52 ,  C07C43/215 ,  C07C25/24 ,  C07C205/16 ,  C07C205/44

Abstract: 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.

公开(公告)号：US20170131286A1

公开(公告)日：2017-05-11

申请号：US14937499

申请日：2015-11-10

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Mohammed Nasiruzzaman SHAIKH ,  Aasif HELAL ,  Abiola Azeez JIMOH

IPC: G01N33/58 ,  G01N33/553 ,  G01N21/64 ,  C07F1/00

CPC classification number: G01N33/587 ,  C07F1/005 ,  G01N21/6428 ,  G01N21/643 ,  G01N33/54346 ,  G01N33/553 ,  G01N33/84 ,  G01N2800/04

Abstract: 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.

公开(公告)号：US20250092542A1

公开(公告)日：2025-03-20

申请号：US18470826

申请日：2023-09-20

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Aasif HELAL ,  Md. Abdul AZIZ ,  Syed Shaheen SHAH ,  Mohammed FETTOUHI

IPC: C25B11/073 ,  C25B1/04 ,  C25B11/031 ,  C25B11/043 ,  C25B11/061

Abstract: An electrode includes a metallic substrate and a layer of cobalt (Co) and cadmium (Cd) doped bimetallic metal-organic framework (BMMOF11) material at least partially covering a surface of the metallic substrate. The BMMOF11 material contains irregular shaped microcrystalline structures with pointed edges, and the irregular shaped microcrystalline structures are in the form of sheets that are stacked on top of one another. A method of making the electrode, and a method of electrochemical water splitting.

公开(公告)号：US20240399344A1

公开(公告)日：2024-12-05

申请号：US18328400

申请日：2023-06-02

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Aasif HELAL ,  Mohammed Ahmed SANHOOB

IPC: B01J23/755 ,  B01J21/18 ,  B01J23/75 ,  B01J35/00 ,  B01J35/10 ,  B01J37/02 ,  B01J37/03 ,  B01J37/04 ,  B01J37/08 ,  B01J37/16 ,  C07C1/12 ,  C07D235/08

Abstract: A method of making a bimetallic nanoalloy composite includes mixing and dissolving a nickel salt, a cobalt salt, and an aromatic carboxylic acid in a first solvent to form a first mixture; mixing acetic acid with the first mixture and heating at a temperature of 150 to 200 degrees Celsius (° C.) form a second mixture; washing the second mixture with at least one organic solvent and drying to form a bimetallic metal-organic framework (CoNiBTC); heating the CoNiBTC at a temperature of 600 to 900° C. under a nitrogen stream to form a pyrolyzed composite; and cooling the pyrolyzed composite and exposing to a gas mixture to form the bimetallic nanoalloy composite. A method of making a benzimidazole compound. A method of making methane from CO2.

公开(公告)号：US20190031697A1

公开(公告)日：2019-01-31

申请号：US16151446

申请日：2018-10-04

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： M. Nasiruzzaman SHAIKH ,  Md. Abdul AZIZ ,  Aasif HELAL

IPC: C07F15/02 ,  C07C45/50 ,  B01J35/02 ,  C07C201/12 ,  B01J35/00 ,  B01J31/28 ,  B01J31/22 ,  C07C2/86 ,  C07C41/30 ,  C07F17/02 ,  C07C17/269 ,  C07C47/228 ,  C07C47/24 ,  C07C47/277 ,  C07C15/52 ,  C07C43/215 ,  C07C25/24 ,  C07C205/16 ,  C07C205/44

CPC classification number: C07F15/02 ,  B01J23/745 ,  B01J23/8906 ,  B01J31/1625 ,  B01J31/2295 ,  B01J31/2414 ,  B01J31/28 ,  B01J35/0013 ,  B01J35/0033 ,  B01J37/0203 ,  B01J37/343 ,  B01J2231/321 ,  B01J2231/4261 ,  B01J2531/822 ,  B01J2531/824 ,  B01J2531/842 ,  B01J2540/66 ,  C07C2/861 ,  C07C17/269 ,  C07C41/30 ,  C07C45/50 ,  C07C45/505 ,  C07C201/12 ,  C07C2531/22 ,  C07C2531/28 ,  C07F17/02 ,  C07C47/228 ,  C07C47/24 ,  C07C47/277 ,  C07C15/52 ,  C07C43/215 ,  C07C25/24 ,  C07C205/16 ,  C07C205/44

Abstract: 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.