Patents by Inventor Wenjian WU

Wenjian WU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Preparation method of carbon-coated ceria hollow sphere
    Patent number: 10654020
    Abstract: The present disclosure discloses a method of preparing a carbon-coated ceria hollow sphere, which includes the following steps of: S110, dispersing silica in a solvent to obtain a silica dispersion; S120, performing a hydrothermal reaction between the silica dispersion and a cerium salt to obtain a ceria-coated silica microsphere; S140, coating the ceria-coated silica microsphere with a carbon source to obtain a primary product, wherein the carbon source is dopamine; S160, sintering the primary product under a protective gas atmosphere to obtain a carbon-coated ceria microsphere; and S170, etching the carbon-coated ceria microsphere by using an etchant to obtain a carbon-coated ceria hollow sphere.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: May 19, 2020
    Assignee: DONGGUAN UNIVERSITY OF TECHNOLOGY
    Inventors: Wenjian Wu, Meili Zhang, Lirong Cai, Yongfu Qiu, Hongbo Fan
  • PREPARATION METHOD OF CARBON-COATED CERIA HOLLOW SPHERE
    Publication number: 20200016565
    Abstract: The present disclosure discloses a method of preparing a carbon-coated ceria hollow sphere, which includes the following steps of: S110, dispersing silica in a solvent to obtain a silica dispersion; S120, performing a hydrothermal reaction between the silica dispersion and a cerium salt to obtain a ceria-coated silica microsphere; S140, coating the ceria-coated silica microsphere with a carbon source to obtain a primary product, wherein the carbon source is dopamine; S160, sintering the primary product under a protective gas atmosphere to obtain a carbon-coated ceria microsphere; and S170, etching the carbon-coated ceria microsphere by using an etchant to obtain a carbon-coated ceria hollow sphere.
    Type: Application
    Filed: April 4, 2018
    Publication date: January 16, 2020
    Inventors: Wenjian WU, Meili ZHANG, Lirong CAI, Yongfu QIU, Hongbo FAN