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:
Dec. 30, 2025
Filed:
May. 21, 2021
Indian Institute of Technology Madras (Iit Madras), Chennai, IN;
Thalappil Pradeep, Chennai, IN;
Sourav Kanti Jana, Chennai, IN;
Kamalesh Chaudhari, Chennai, IN;
Md Rabiul Islam, Chennai, IN;
INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS), Chennai, IN;
Abstract
The present invention relates to a new device for selective arsenic sensing using electrochemically reduced graphene oxide (ERGO) based reusable flexible electrode strip. Active electrode of the device was prepared by a very simple method in which the thin film of graphene oxide (GO) was reduced electrochemically at a low DC potential (0 to −1.5 V). The said device selectively detects Asin field water sample within a wide range of concentrations with a limit of detection of less than 25 ppb. More importantly, the selectivity of the electrode is independent of conductivity and TDS levels of measured field water samples which were collected from various parts of India. Selective detection of Asby ERGO was controlled by optimizing the surface electronic conductivity through structural modification of it during electroreduction process.