MUMBAI, India, June 24 -- Intellectual Property India has published a patent application (202411090578 A) filed by Amity University on November 21, 2024, for Eco-Conscious Synthesis Of Silver Nanoparticles For Superior Degradation Of Industrial Dyes And Toxic Compounds.

Inventors include Harishchandra Singh; and Mujahid Ameen Khan.

The application for the patent was published on June 12, 2026, under issue no. 24/2026.

Abstract: The present invention relates to an environmentally sustainable method for the degradation of water pollutants using silver nanoparticles (AgNPs) synthesized from natural materials. Four bio-derived reducing and stabilizing agents—starch, alginate, ginger, and turmeric—were evaluated for their efficiency in degrading common organic contaminants including methylene blue (MB), rhodamine B (RhB), methyl orange (MO), 4-nitrophenol (4-NP), and nitrobenzene (NB). The synthesized AgNPs exhibit rapid catalytic degradation of pollutants containing azo (-N=N-) and nitro (-NO2) functional groups. Experimental results demonstrate that starch-based AgNPs achieve a 98.29% degradation of MB within 6 minutes, while turmeric-based AgNPs achieve 94.98% degradation of MB within 14 minutes. Additionally, alginate- based AgNPs show a 69.88% conversion rate for 4-NP, and ginger-based AgNPs also exhibit effective pollutant degradation. The invention provides a low-cost, green, and highly efficient approach for wastewater treatment, highlighting starch and turmeric as particularly promising natural precursors for AgNP synthesis.

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