MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202641122775 A) filed by Dr. Daniel Kodamala; Dr. Subash Chandra Sahu; Dr. Segun Emmanuel Ibitoye; Dr. N. S. M. P. Latha Devi; Dr. P. Jayaprakash; Prof. Dr. Sudhir Kumar Mishra; and Dr. Nellore Manoj Kumar on October 13, 2026, for Process For Preparing Size-Controlled Noble-Metal Nanoparticles.
Inventors include Dr. Daniel Kodamala; Dr. Subash Chandra Sahu; Dr. Segun Emmanuel Ibitoye; Dr. N. S. M. P. Latha Devi; Dr. P. Jayaprakash; Prof. Dr. Sudhir Kumar Mishra; and Dr. Nellore Manoj Kumar.
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: A process for preparing size-controlled noble-metal nanoparticles, and the nanoparticles obtained thereby, is disclosed. An aqueous solution of a noble-metal precursor, such as a salt of gold, silver, platinum, or palladium, is combined with a reducing agent in the presence of a stabilizing agent so as to reduce the precursor and form noble-metal nanoparticles. The mean size of the nanoparticles is controlled to a predetermined value by the coordinated regulation of the ratio of reducing agent to precursor, the concentration of the stabilizing agent, the temperature, and the rate and order of addition of the reagents, these parameters together governing the relative rates and temporal separation of nucleation and growth. A high reductant-to-precursor ratio and rapid addition promote copious nucleation separated from growth, yielding small nanoparticles with a narrow distribution, whereas a lower ratio yields larger nanoparticles. The resulting colloid may be aged, purified, concentrated, and surface-modified. The process yields, reproducibly and at useful concentrations, noble-metal nanoparticles of a selectable, uniform size whose size-dependent optical, electronic, and catalytic properties are well defined, for use in catalysis, sensing, diagnostics, biomedicine, and electronics.
Disclaimer: Curated by HT Syndication.
