MUMBAI, India, Aug. 17 -- Intellectual Property India has published a patent application (202641097042 A) filed by Vignans Foundation For Science, Technology And Research on August 11, 2026, for Enhanced Photocatalytic Degradation Of Rhodamine B Using Green-Synthesized Silver Nanoparticles.
Inventors include Sumalatha Boddu; Raveena Malkari Katika; Indira Mikkili; John Babu Dulla; and Venkata Narayana Allugunulla.
The application for the patent was published on August 14, 2026, under issue no. 33/2026.
Abstract: ABSTRACT [0016] The increasing discharge of dye-containing industrial wastewater has become a significant environmental concern due to the persistence and toxicity of synthetic dyes such as Rhodamine B (RhB). In this study, green-synthesized silver nanoparticles (AgNPs) were developed as an eco-friendly and efficient photocatalyst for the degradation of RhB under UV irradiation. The AgNPs were synthesized using a plant extract as a reducing and stabilizing agent, eliminating the need for hazardous chemicals and making the process environmentally sustainable. The synthesized nanoparticles were characterized to confirm their crystalline structure, morphology, elemental composition, and optical properties. The photocatalytic performance of the green AgNPs was evaluated by investigating the effects of catalyst dosage, initial dye concentration, solution pH, and irradiation time on the degradation efficiency of Rhodamine B. The green-synthesized AgNPs exhibited significantly enhanced photocatalytic activity due to their high surface area, efficient light absorption, and effective generation of reactive oxygen species, resulting in rapid degradation of the dye. The degradation kinetics followed a pseudo-first-order model, indicating efficient photocatalytic oxidation of RhB molecules. The synthesized AgNPs also demonstrated good stability and reusability over repeated photocatalytic cycles. Overall, this study highlights the potential of green-synthesized silver nanoparticles as a sustainable, cost-effective, and environmentally benign photocatalyst for the treatment of dye-contaminated wastewater.
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