The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2025
Filed:
Feb. 03, 2022
Institute of Environmental and Operational Medicine, Academy of Military Medical Science, Academy of Military Science, Tianjin, CN;
Shuang Li, Tianjin, CN;
Zhixian Gao, Tianjin, CN;
Dianpeng Han, Tianjin, CN;
Jialei Bai, Tianjin, CN;
Yuan Peng, Tianjin, CN;
Jin Wu, Tianjin, CN;
Kang Qin, Tianjin, CN;
Shuyue Ren, Tianjin, CN;
Yu Wang, Tianjin, CN;
Huanying Zhou, Tianjin, CN;
Tie Han, Tianjin, CN;
Xiaoxiao Lin, Tianjin, CN;
Abstract
The present application relates to the technical field of wastewater treatment and rapid pollutant detection, in particular to a chitosan-polyacrylamide composite porous hydrogel, preparation and use thereof, and a metal ion-adsorbing and detecting reagent and method. The chitosan-polyacrylamide composite porous hydrogel of the present application is prepared by in situ polymerization of a chitosan sol, an acrylamide, a crosslinking agent and a surfactant into a mixed solution comprising liquid droplets, followed by steps of curing, washing, and freeze-drying. The present application further provides a metal ion-detecting reagent, which is obtained by adsorbing a color developing agent into the chitosan-polyacrylamide composite porous hydrogel as described above, wherein the color developing agent is a dye that changes color when encountering metal ions. The chitosan-polyacrylamide composite porous hydrogel of the present application has balanced mechanical properties and porosity.