公开(公告)号：US11834351B1

公开(公告)日：2023-12-05

申请号：US18327889

申请日：2023-06-02

Applicant: Guangdong Ocean University

Inventor： Lefan Li ,  Zhang Hu ,  Jingyuan Guo ,  Tuanzhang Li ,  Wenhua Wang ,  Chengyong Li ,  Di Wang ,  Chengpeng Li ,  Sidong Li

IPC: C02F1/14 ,  C08J3/075 ,  C08K3/04 ,  C02F103/08

CPC classification number: C02F1/14 ,  C08J3/075 ,  C08K3/042 ,  C02F2103/08 ,  C02F2201/002 ,  C08J2333/26

Abstract: A composite hydrogel sponge and its preparation method and application, and a solar desalination device are provided. The composite hydrogel sponge includes a water supply layer and an evaporation layer disposed on the water supply layer. A material of the water supply layer is polyacrylamide hydrogel, and a material of the evaporation layer is polyacrylamide/graphene composite hydrogel. The polyacrylamide/graphene composite hydrogel includes the polyacrylamide hydrogel and the graphene dispersed in the polyacrylamide hydrogel. The composite hydrogel sponge has a special porous structure of the sponge, which is beneficial to the rapid transmission and supply of water; meanwhile, the graphene on the surface of the evaporation layer can fully receive solar energy to achieve higher photo-thermal conversion efficiency.

公开(公告)号：US11958946B2

公开(公告)日：2024-04-16

申请号：US18331175

申请日：2023-06-08

Applicant: Guangdong Ocean University

Inventor： Lefan Li ,  Chengpeng Li ,  Jingyuan Guo ,  Di Wang ,  Chengyong Li ,  Wenhua Wang ,  Zhang Hu ,  Sidong Li

IPC: C08J3/075 ,  C08F2/10 ,  C08F2/44 ,  C08F20/06 ,  C08K3/04

CPC classification number: C08J3/075 ,  C08F2/10 ,  C08F2/44 ,  C08F20/06 ,  C08K3/041 ,  C08J2333/02 ,  C08K2201/011

Abstract: A method for preparing a carbon nano tube/polyacrylic acid hydrogel, a product and an application thereof are provided. The method includes: oxidizing a carbon nanotube into a carboxylated carbon nanotube, thereafter performing in-situ polymerization with acrylic acid, sodium hydroxide, ammonium persulfate, triethanolamine and N, N-methylenebisacrylamide to obtain a carbon nanotube/polyacrylic acid hydrogel. The hydrogel has a uniform porous structure, facilitating a rapid transmission and supply of water. The carbon nanotubes in the hydrogel are of an array structure, achieving a full absorption of solar energy to realize a high-efficiency photothermal conversion. The gel is attached to a sponge base to obtain a solar-powered carbon nano tube/polyacrylic acid hydrogel steam generator for the photothermal conversion. The steam generator is used for solar seawater desalination, but can improve evaporation rate and evaporation efficiency. In addition, the steam generator has many advantages, such as energy conservation, environmental protection, simplicity and practicability.

公开(公告)号：US20230312840A1

公开(公告)日：2023-10-05

申请号：US18331175

申请日：2023-06-08

Applicant: Guangdong Ocean University

Inventor： Lefan Li ,  Chengpeng Li ,  Jingyuan Guo ,  Di Wang ,  Chengyong Li ,  Wenhua Wang ,  Zhang Hu ,  Sidong Li

IPC: C08J3/075 ,  C08K3/04 ,  C08F2/44 ,  C08F2/10 ,  C08F20/06

CPC classification number: C08J3/075 ,  C08K3/041 ,  C08F2/44 ,  C08F2/10 ,  C08F20/06 ,  C08K2201/011 ,  C08J2333/02

Abstract: A method for preparing a carbon nano tube/polyacrylic acid hydrogel, a product and an application thereof are provided. The method includes: oxidizing a carbon nanotube into a carboxylated carbon nanotube, thereafter performing in-situ polymerization with acrylic acid, sodium hydroxide, ammonium persulfate, triethanolamine and N, N-methylenebisacrylamide to obtain a carbon nanotube/polyacrylic acid hydrogel. The hydrogel has a uniform porous structure, facilitating a rapid transmission and supply of water. The carbon nanotubes in the hydrogel are of an array structure, achieving a full absorption of solar energy to realize a high-efficiency photothermal conversion. The gel is attached to a sponge base to obtain a solar-powered carbon nano tube/polyacrylic acid hydrogel steam generator for the photothermal conversion. The steam generator is used for solar seawater desalination, but can improve evaporation rate and evaporation efficiency. In addition, the steam generator has many advantages, such as energy conservation, environmental protection, simplicity and practicability.