Research Achievements

(54) Title of the invention : Europium-Substituted Ytterbium Orthoferrite Nanoparticles with Enhanced Photocatalytic and Photoluminescent Properties and a Method for Their Synthesis

(57) Abstract :

ABSTRACT "Europium-Substituted Ytterbium Orthoferrite Nanoparticles with Enhanced Photocatalytic and Photoluminescent Properties and a Method for Their Synthesis" The present invention relates to europium-substituted ytterbium orthoferrite (Ybl-xEuxFe03) nanoparticles with enhanced photocatalytic and photoluminescent properties, as well as a novel sol-gel synthesis method for their preparation. The invention provides a controlled substitution of Eu³* into the YbFe03 lattice, resulting in structural distortions that improve charge carrier separation, visible-light absorption, and fluorescence emission. The nanoparticles exhibit a bandgap ranging from 2.01 ev to 2.30 eV, making them highly effective for visible-light-driven photocatalysis. Surface functionalization with disodium tartrate enhances aqueous dispersibility and stability, expanding their practical applications in wastewater treatment, optoelectronics, and bioimaging. The optimized composition (x = 0.3) demonstrates a 90% degradation efficiency of methylene orange dye within 45 minutes under visible light, with a pseudo-first-order kinetic rate constant min-I . The invention further describes a scalable and cost-effective sol-gel method involving precursor dissolution, chelation, gel formation, controlled thermal annealing, and surface modification. These nanoparticles offer superior photocatalytic performance, strong red fluorescence emission at 615 nm, and long-term stability, making them ideal for environmental remediation, biomedical diagnostics, and luminescent sensing applications.

Ms. K. Santoshi, working as a Lecturer in Chemistry at the Government Degree College, Chintapalli, has achieved a significant milestone in the field of academic research and innovation by securing a patent based on her scholarly work and research publications. She has been actively contributing to the advancement of chemical sciences through her research-oriented approach and dedication to academic excellence. As a faculty member, she has consistently engaged in research activities, leading to the development of innovative concepts that have been recognized through patent publication. Her achievement reflects her commitment to integrating research with teaching and promoting a culture of innovation among students. According to official records, she is serving as a Chemistry faculty member at GDC Chintapalli and has participated in academic training programs as a subject expert . The grant of a patent for her research work highlights her contribution to intellectual property development and enhances the academic reputation of the institution. This accomplishment serves as an inspiration to both students and fellow faculty members, encouraging them to pursue research and innovation in their respective fields.