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公开(公告)号：US20240310287A1
公开(公告)日：2024-09-19
申请号：US18185072
申请日：2023-03-16
Inventor： Muhammad HAROON , Abdulaziz Abdulrahman AL-SAADI
CPC classification number: G01N21/658 , B82Y30/00 , G01J3/44
Abstract: A method of detecting an hydroxycarbamide in a solution including contacting an electrochemical sensor with the solution, where the electrochemical sensor includes gold coated copper oxide circular nanoplates and a substrate. The gold coated copper oxide circular nanoplates are coated on the substrate. The method further includes applying a potential and irradiating the electrochemical sensor in the solution, and measuring a Raman signal of the electrochemical sensor in the solution. The intensity of the Raman signal correlates with the amount of hydroxycarbamide in the solution.
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2.发明公开公开(公告)号：US20240255430A1
公开(公告)日：2024-08-01
申请号：US18158140
申请日：2023-01-23
Inventor： Abdulaziz Abdulrahman AL-SAADI , Sathiyamoorthy MURUGESAN , Muhammad HAROON , Tawfik A. SALEH
CPC classification number: G01N21/658 , B22F1/056 , B22F1/18 , B22F2301/255 , B22F2304/056 , B22F2304/058 , G01N2201/06113
Abstract: A surface-enhanced Raman scattering (SERS) substrate is provided. The SERS substrate includes a transparent substrate and a nanocomposite composition. The nanocomposite composition includes a silver-loaded silica (Ag—SiO2) nanocomposite having a silica core and a silver/silica shell disposed around the silica core and a zeolitic material having a nano porous structure. The silver/silica shell contains silver nanoparticles uniformly distributed therein. The Ag—SiO2 nanocomposite is uniformly disposed on a surface of the zeolitic material. The nanoparticles of the Ag—SiO2 nanocomposite are spherical and have a mean particle size of 100 to 500 nanometers (nm). A method of obtaining a Raman spectrum of a sulfur-containing compound in a mixing composition is also provided.
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