MUMBAI, India, Feb. 6 -- Intellectual Property India has published a patent application (202541109149 A) filed by University Of Kerala, Thiruvananthapuram, Kerala, on Nov. 10, 2025, for 'spinel ferrite based photocatalysts for hydrogen generation and a method of preparation thereof.'

Inventor(s) include K. G. Gopchandran; Raji R; Sajesh Sasidharan; Anjana J M; and Sabin B S.

The application for the patent was published on Feb. 6, under issue no. 06/2026.

According to the abstract released by the Intellectual Property India: "A cobalt-doped zinc ferrite spinel photocatalyst is disclosed for efficient solar-driven hydrogen generation. The photocatalyst includes Zn1??Co?Fe2O4 nanostructures, where x ranges from 0.001 to 0.003, exhibiting a hierarchical flower-like morphology with an average particle size of 30-36 nm. The photocatalyst has a narrow optical band gap in the range of 1.73-1.79 eV and strong light-harvesting capability, including two prominent near-infrared absorption bands spanning 900-1300 nm and 1550-1700 nm. A controlled co-precipitation and thermal treatment method is provided for synthesizing the nanostructures with precise compositional and morphological control. The photocatalyst enables hydrogen generation from pure water under solar irradiation, including NIR wavelengths, without sacrificial agents, operating at near-ambient temperature and neutral pH. The disclosed composition and method offer a robust, scalable, and cost-effective approach for sustainable hydrogen production using broad-spectrum solar energy."

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