公开(公告)号：US11638910B1

公开(公告)日：2023-05-02

申请号：US17973161

申请日：2022-10-25

申请人： Beijing Normal University, Zhuhai

发明人： Yi Yang ,  Yinuo Wang ,  Haowen Lin ,  Chenyang Zheng ,  Ruikun Xu ,  Huiqi Zhu ,  Xuhui Xu ,  Lulu Bao

IPC分类号： B01J20/20 ,  B01J20/02 ,  B01J20/28 ,  B01J20/32 ,  B01J20/30 ,  C02F101/10 ,  C02F1/28

摘要： A preparation method of a lanthanum-iron-loaded carbon nanotube film for environmental restoration is provided, it belongs to the technical field of composite materials. The preparation method includes: mixing carbon nanotubes with a lanthanum-iron mixed solution to obtain a suspension, then obtaining a first reaction solution by a constant temperature oscillation reaction; adding alkali liquor into the first reaction solution to obtain a second reaction solution by an oscillation reaction; carrying out a solid-liquid separation on the second reaction solution, adding the obtained solid after drying into an organic solution, and obtaining a third reaction solution by ultrasonic mixing; centrifuging the third reaction solution to obtain a supernatant; obtaining a lanthanum-iron-loaded carbon nanotube film by suction filtration. Compared with powdered adsorbent and single adsorbent, the material prepared by the preparation method has advantages of strong stability, high adsorption efficiency, good regeneration effect, high recycling efficiency, and low production.

公开(公告)号：US20230286834A1

公开(公告)日：2023-09-14

申请号：US18117445

申请日：2023-03-05

申请人： Beijing Normal University, Zhuhai

发明人： Yi Yang ,  Lulu Bao ,  Huiqi Zhu ,  Xuhui Xu ,  Yinuo Wang ,  Yuxi Long ,  Ruikun Xu ,  Haowen Lin ,  Chenyang Zheng

IPC分类号： C02F1/44 ,  B01J37/32 ,  B01J37/08 ,  B01D71/42 ,  B01D71/28 ,  B01D69/12 ,  B01J23/745

CPC分类号： C02F1/44 ,  B01J37/32 ,  B01J37/08 ,  B01D71/421 ,  B01D71/281 ,  B01D69/1213 ,  B01J23/745 ,  C02F2101/30

摘要： A preparation method of a gradient long-effective catalytic membrane with high-strength and anti-deposition property is provided and includes: adding a nanometal oxide catalyst into an N, N-dimethylformamide solution of polyacrylonitrile or polystyrene, uniformly mixing, performing electrostatic spinning, keeping a receiver at −190° C. to −200° C. in the electrostatic spinning process, and performing freeze drying on a precursor membrane obtained after the electrostatic spinning is finished, so as to obtain the gradient long-effective catalytic membrane. According to the method, the gradient long-effective catalytic membrane with high-strength and anti-deposition property is obtained through a one-step method which adopts an ultralow-temperature-electrostatic spinning technology and combines with nanometal, the contradictory relation between the catalytic efficiency and the membrane stability in a traditional catalytic membrane is solved, the catalytic performance of the membrane is fully played, the organic polluted wastewater can be efficiently catalytically degraded, and the service life of the catalytic membrane is prolonged.

公开(公告)号：US11746026B1

公开(公告)日：2023-09-05

申请号：US18117445

申请日：2023-03-05

申请人： Beijing Normal University, Zhuhai

发明人： Yi Yang ,  Lulu Bao ,  Huiqi Zhu ,  Xuhui Xu ,  Yinuo Wang ,  Yuxi Long ,  Ruikun Xu ,  Haowen Lin ,  Chenyang Zheng

IPC分类号： C02F1/44 ,  B01J37/32 ,  B01J37/08 ,  B01D71/28 ,  B01D69/12 ,  B01J23/745 ,  B01D71/42 ,  C02F101/30

CPC分类号： C02F1/44 ,  B01D69/1213 ,  B01D71/281 ,  B01D71/421 ,  B01J23/745 ,  B01J37/08 ,  B01J37/32 ,  C02F2101/30

摘要： A preparation method of a gradient long-effective catalytic membrane with high-strength and anti-deposition property is provided and includes: adding a nanometal oxide catalyst into an N, N-dimethylformamide solution of polyacrylonitrile or polystyrene, uniformly mixing, performing electrostatic spinning, keeping a receiver at −190° C. to −200° C. in the electrostatic spinning process, and performing freeze drying on a precursor membrane obtained after the electrostatic spinning is finished, so as to obtain the gradient long-effective catalytic membrane. According to the method, the gradient long-effective catalytic membrane with high-strength and anti-deposition property is obtained through a one-step method which adopts an ultralow-temperature-electrostatic spinning technology and combines with nanometal, the contradictory relation between the catalytic efficiency and the membrane stability in a traditional catalytic membrane is solved, the catalytic performance of the membrane is fully played, the organic polluted wastewater can be efficiently catalytically degraded, and the service life of the catalytic membrane is prolonged.

公开(公告)号：US20230125135A1

公开(公告)日：2023-04-27

申请号：US17973161

申请日：2022-10-25

申请人： Beijing Normal University, Zhuhai

发明人： Yi Yang ,  Yinuo Wang ,  Haowen Lin ,  Chenyang Zheng ,  Ruikun Xu ,  Huiqi Zhu ,  Xuhui Xu ,  Lulu Bao

IPC分类号： B01J20/20 ,  B01J20/02 ,  B01J20/28 ,  B01J20/32 ,  B01J20/30

摘要： A preparation method of a lanthanum-iron-loaded carbon nanotube film for environmental restoration is provided, it belongs to the technical field of composite materials. The preparation method includes: mixing carbon nanotubes with a lanthanum-iron mixed solution to obtain a suspension, then obtaining a first reaction solution by a constant temperature oscillation reaction; adding alkali liquor into the first reaction solution to obtain a second reaction solution by an oscillation reaction; carrying out a solid-liquid separation on the second reaction solution, adding the obtained solid after drying into an organic solution, and obtaining a third reaction solution by ultrasonic mixing; centrifuging the third reaction solution to obtain a supernatant; obtaining a lanthanum-iron-loaded carbon nanotube film by suction filtration. Compared with powdered adsorbent and single adsorbent, the material prepared by the preparation method has advantages of strong stability, high adsorption efficiency, good regeneration effect, high recycling efficiency, and low production.