MUMBAI, India, April 20 -- Intellectual Property India has published a patent application (202411076011 A) filed by Council Of Scientific And Industrial Research, New Delhi, on Oct. 7, 2024, for 'a sol-gel based colorimetric nanosensor and a process for the preparation thereof.'
Inventor(s) include Nabojit Das; Akash Kumar; and Rayavarapu Raja Gopal.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "A Sol-gel based Colorimetric Nanosensor and a Process for the Preparation Thereof The instant invention relates to a sensing probe that can modulate its behaviour in selective detection of toxic metal ions via sol-gel phase. Herein taurine is being reportedfor the first time as a novel capping onto silver nanoparticles via in-situ synthetic route resulting innanoparticles of different sizes ranging from 7.52nm to 69.52 nm diameter at room temperature. Taurine has been usedas a capping and stabilizing agent leading to the first synthetic route to develop taurine capped silver nanospheres via wet-chemical reduction method. Further, carrageenan was used as a unique gel based hydrogel to incorporate the synthesized taurine capped silver nanospheres. The novel sol-gel nanoprobe was developed for metal ions detection for the first time which showed switching of metal ion selectivity upon sol-gel phase transition, leading towards developing a system for multiple metal ions with high selectivity. Interestingly, selectivity towards metal ions was switched upon sol-gel transition of taurine capped nanoparticles. Taurine capped silver nanoparticles (Tau-AgNPs) of tunable sizes (7.52 nm and 69.52 nm respectively) detected aluminium (Al3+) and chromium (Cr3+) at different pH via colorimetric change in sol phase; whereas the probe in gel phase detected copper (Cu2+) irrespective of pH and also enabled the removal of copper too."
Disclaimer: Curated by HT Syndication.
