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:
Oct. 28, 2025
Filed:
Dec. 29, 2018
Indian Institute of Technology Madras (Iit Madras), Chennai, IN;
Pradeep Thalappil, Chennai, IN;
Md Rabiul Islam, Chennai, IN;
Soujit Sengupta, Chennai, IN;
Srikrishnarka Pillalamarri, Chennai, IN;
Sourav Kanti Jana, Chennai, IN;
INDIAN INSTITUTE OF TECHNOLOGYMADRAS (IIT MADRAS), Chennai, IN;
Abstract
Reduced graphene oxide@polystyrene (RGO-PS) composite was synthesized using reduced graphene oxide (RGO), styrene monomer and divinylbenzene through an in-situ polymerization process. The RGO-PS composite was functionalized with sulfonate and quaternary amine functionalities for making positive and negative integrated electro-adsorbent-ion exchange resins (EAIERs), respectively. These EAIERs 'molecular constructs' were used as CDI electrodes and desalination was performed for the removal of different ions. A high electro-adsorption capacity of ˜15.93 mg/g for Clusing 802 μS NaCl solution was observed in laboratory batch experiments which was much higher than the adsorption capacity of RGO electrodes reported earlier (˜2-3 mg/g).