MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202621062191 A) filed by Indian Institute Of Technology Indore on May 15, 2026, for Method For Synthesizing Defect-Engineered Zno/Cuo P–n Heterojunction Nanocomposite Via Phytochemical-Assisted Co-Precipitation.
Inventors include Kumar, Gopi; Dr. B S, Ashwath Narayana; Sen, Dilip; and Prof. Kundalwal, Shailesh I..
The application for the patent was published on July 10, 2026, under issue no. 28/2026.
Abstract: ABSTRACT OF THE INVENTION METHOD FOR SYNTHESIZING DEFECT-ENGINEERED ZNO/CUO P–N HETEROJUNCTION NANOCOMPOSITE VIA PHYTOCHEMICAL-ASSISTED CO-PRECIPITATION The present invention relates to a method for synthesizing a defect-engineered ZnO/CuO p–n heterojunction nanocomposite. The method comprises preparing equimolar aqueous precursor solutions of zinc nitrate and copper nitrate, mixing the same under continuous stirring, and heating the mixture at 60 °C to obtain a homogeneous solution. A phytochemical extract, preferably derived from Withania somnifera leaves, is added to the reaction mixture as a reducing, capping, and stabilizing agent. The pH of the reaction mixture is adjusted to 10 by controlled addition of sodium hydroxide solution to induce simultaneous co-precipitation of zinc and copper hydroxides. The reaction mixture is maintained under controlled conditions to facilitate nucleation and interfacial growth, followed by separation, washing, and drying to obtain a precursor material. The precursor is calcined at about 450 °C to obtain a defect-engineered ZnO/CuO p-n heterojunction nanocomposite comprising crystalline phases, oxygen vacancies, and strong interfacial coupling.
Disclaimer: Curated by HT Syndication.
