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：US20250035546A1

公开(公告)日：2025-01-30

申请号：US18913676

申请日：2024-10-11

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

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

IPC: G01N21/3577 ,  G01N21/17

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：US20240011906A1

公开(公告)日：2024-01-11

申请号：US17857545

申请日：2022-07-05

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Aasif HELAL ,  Mohammad Mizanur RAHMAN ,  Muhammed NAEEM ,  Md. Eyasin ARAFAT ,  Muhammad USMAN

IPC: G01N21/64 ,  C09K11/06 ,  C07F15/04

CPC classification number: G01N21/6428 ,  C09K11/06 ,  C07F15/045 ,  C09K2211/187 ,  C09K2211/182

Abstract: 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.