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公开(公告)号：US20200346940A1
公开(公告)日：2020-11-05
申请号：US16400358
申请日：2019-05-01
发明人： Hanan Hussein Amin MOHAMED , Aamerah Abdulwahab ALSANEA , Nuhad Abdullah ALOMAIR , Sultan AKHTAR
IPC分类号： C01G9/02 , C01B32/21 , B29B17/04 , B29B17/02 , B01J21/18 , B01J23/06 , B01J35/00 , B01J37/08
摘要： High surface area 3D mesoporous carbon nanocomposites can be derived from Zn dust and PET bottle mixed waste with a high surface area. Simultaneous transformation of Zn metal into ZnO nanoparticles and PET bottle waste to porous carbon materials can be achieved by thermal treatment at preferably 600 to 800° C., and reaction times of from 15 to 60 minutes, after optionally de-aerating the reaction mixtures with N2 gas. The waste-based carbon materials can have surface areas of 650 to 725 m2/g, e.g., 684.5 m2/g and pore size distributions of 12 to 18 nm. The carbon materials may have 3D porous dense layers with a gradient pore structure, which may have enhanced photocatalytic performance for degrading, e.g., organic dyes, such as methylene blue and malachite green. Sustainable methods make ZnO-mesoporous carbon materials from waste for applications including photocatalysis, upcycling mixed waste materials.
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公开(公告)号：US20230285943A1
公开(公告)日：2023-09-14
申请号：US18318763
申请日：2023-05-17
CPC分类号： B01J23/8953 , C02F1/725 , B01J35/1061 , B01J35/004 , B01J21/18 , C02F2101/308
摘要： An efficient photocatalyst nanocomposite comprising reduced graphene oxide, noble metal, and a metal oxide prepared by a one-step method that utilizes date seed extract as a reducing and nanoparticle determining size agent. The photocatalyst of the invention is a more effective sunlight photocatalyst than that prepared by traditional method in the photo decomposition of organic compounds in contaminated water.
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公开(公告)号：US20220212176A1
公开(公告)日：2022-07-07
申请号：US17700969
申请日：2022-03-22
摘要： An efficient photocatalyst nanocomposite comprising reduced graphene oxide, noble metal, and a metal oxide prepared by a one-step method that utilizes date seed extract as a reducing and nanoparticle determining size agent. The photocatalyst of the invention is a more effective sunlight photocatalyst than that prepared by traditional method in the photo decomposition of organic compounds in contaminated water.
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公开(公告)号：US20240058798A1
公开(公告)日：2024-02-22
申请号：US18496431
申请日：2023-10-27
CPC分类号： B01J23/8953 , B01J21/18 , B01J35/004 , B01J35/1061 , C02F1/725 , C02F2101/308
摘要： An efficient photocatalyst nanocomposite comprising reduced graphene oxide, noble metal, and a metal oxide prepared by a one-step method that utilizes date seed extract as a reducing and nanoparticle determining size agent. The photocatalyst of the invention is a more effective sunlight photocatalyst than that prepared by traditional method in the photo decomposition of organic compounds in contaminated water.
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公开(公告)号：US20230331581A1
公开(公告)日：2023-10-19
申请号：US18213519
申请日：2023-06-23
摘要： A method for producing crystalline α-Fe2O3 nanoparticles involving ultrasonic treatment of a solution of an iron (III)-containing precursor and an extract from the seeds of a plant in the family Linaceae. The method involves preparing an aqueous extract from the seeds of a plant in the family Linacae and dropwise addition of the extract to the solution of an iron (III)-containing precursor. The method yields crystalline nanoparticles of α-Fe2O3 having a spherical morphology with a diameter of 100 nm to 300 nm, a mean surface area of 240 to 250 m2/g, and a type-II nitrogen adsorption-desorption BET isotherm with a H3 hysteresis loop. A method for the photocatalytic decomposition of organic pollutants using the nanoparticles is disclosed. An antibacterial composition containing the crystalline α-Fe2O3 nanoparticles is also disclosed.
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6.发明公开公开(公告)号：US20240326025A1
公开(公告)日：2024-10-03
申请号：US18739617
申请日：2024-06-11
CPC分类号： B01J23/8953 , B01J21/18 , B01J35/39 , B01J35/647 , C02F1/725 , C02F2101/308
摘要： An efficient photocatalyst nanocomposite comprising reduced graphene oxide, noble metal, and a metal oxide prepared by a one-step method that utilizes date seed extract as a reducing and nanoparticle determining size agent. The photocatalyst of the invention is a more effective sunlight photocatalyst than that prepared by traditional method in the photo decomposition of organic compounds in contaminated water.
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公开(公告)号：US20220089454A1
公开(公告)日：2022-03-24
申请号：US17543899
申请日：2021-12-07
摘要： A method for producing crystalline α-Fe2O3 nanoparticles involving ultrasonic treatment of a solution of an iron (III)-containing precursor and an extract from the seeds of a plant in the family Linaceae. The method involves preparing an aqueous extract from the seeds of a plant in the family Linacae and dropwise addition of the extract to the solution of an iron (III)-containing precursor. The method yields crystalline nanoparticles of α-Fe2O3 having a spherical morphology with a diameter of 100 nm to 300 nm, a mean surface area of 240 to 250 m2/g, and a type-II nitrogen adsorption-desorption BET isotherm with a H3 hysteresis loop. A method for the photocatalytic decomposition of organic pollutants using the nanoparticles is disclosed. An antibacterial composition containing the crystalline α-Fe2O3 nanoparticles is also disclosed.
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公开(公告)号：US20210087072A1
公开(公告)日：2021-03-25
申请号：US16582693
申请日：2019-09-25
摘要： A method for producing crystalline α-Fe2O3 nanoparticles involving ultrasonic treatment of a solution of an iron (III)-containing precursor and an extract from the seeds of a plant in the family Linaceae. The method involves preparing an aqueous extract from the seeds of a plant in the family Linacae and dropwise addition of the extract to the solution of an iron (III)-containing precursor. The method yields crystalline nanoparticles of α-Fe2O3 having a spherical morphology with a diameter of 100 nm to 300 nm, a mean surface area of 240 to 250 m2/g, and a type-II nitrogen adsorption-desorption BET isotherm with a H3 hysteresis loop. A method for the photocatalytic decomposition of organic pollutants using the nanoparticles is disclosed. An antibacterial composition containing the crystalline α-Fe2O3 nanoparticles is also disclosed.
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公开(公告)号：US20240327234A1
公开(公告)日：2024-10-03
申请号：US18740572
申请日：2024-06-12
发明人： Hanan Hussein Amin MOHAMED , Aamerah Abdulwahab ALSANEA , Nuhad Abdullah ALOMAIR , Sultan AKHTAR
IPC分类号： C01G9/02 , B01J21/18 , B01J23/06 , B01J35/39 , B01J37/08 , B29B17/02 , B29B17/04 , C01B32/21
CPC分类号： C01G9/02 , B01J21/18 , B01J23/06 , B01J35/39 , B01J37/084 , B29B17/02 , B29B17/04 , C01B32/21 , B29B2017/0268 , B29B2017/0496 , C01P2002/72 , C01P2002/82 , C01P2004/03 , C01P2004/04 , C01P2004/64 , C01P2006/12 , C01P2006/16
摘要： High surface area 3D mesoporous carbon nanocomposites can be derived from Zn dust and PET bottle mixed waste with a high surface area. Simultaneous transformation of Zn metal into ZnO nanoparticles and PET bottle waste to porous carbon materials can be achieved by thermal treatment at preferably 600 to 800° C., and reaction times of from 15 to 60 minutes, after optionally de-aerating the reaction mixtures with N2 gas. The waste-based carbon materials can have surface areas of 650 to 725 m2/g, e.g., 684.5 m2/g and pore size distributions of 12 to 18 nm. The carbon materials may have 3D porous dense layers with a gradient pore structure, which may have enhanced photocatalytic performance for degrading, e.g., organic dyes, such as methylene blue and malachite green. Sustainable methods make ZnO-mesoporous carbon materials from waste for applications including photocatalysis, upcycling mixed waste materials.
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公开(公告)号：US20240300823A1
公开(公告)日：2024-09-12
申请号：US18660375
申请日：2024-05-10
CPC分类号： C01G49/04 , C30B7/14 , C30B30/00 , B82Y30/00 , B82Y40/00 , C01P2002/72 , C01P2002/82 , C01P2004/03 , C01P2004/04 , C01P2004/32 , C01P2004/64 , C01P2006/12 , C01P2006/16
摘要： A method for producing crystalline α-Fe2O3 nanoparticles involving ultrasonic treatment of a solution of an iron (III)-containing precursor and an extract from the seeds of a plant in the family Linaceae. The method involves preparing an aqueous extract from the seeds of a plant in the family Linacae and dropwise addition of the extract to the solution of an iron (III)-containing precursor. The method yields crystalline nanoparticles of α-Fe2O3 having a spherical morphology with a diameter of 100 nm to 300 nm, a mean surface area of 240 to 250 m2/g, and a type-II nitrogen adsorption-desorption BET isotherm with a H3hysteresis loop. A method for the photocatalytic decomposition of organic pollutants using the nanoparticles is disclosed. An antibacterial composition containing the crystalline α-Fe2O3 nanoparticles is also disclosed.
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