Synchrotron studies of Ag+ and Dy3+ ions in zinc lanthanum aluminum borate glasses synthesized using Novel Microwave melt-quenching technique

Abstract

A novel microwave heating technique is used in the present work to synthesis the glasses. In this work, the stoichiometry ratio of (43-x) B2O3+ 45ZnO+ 5La2O3+ 5Al2O3+ 0.5SnO2+ 1.5AgNO3+ xDy2O3 were exposed to microwave energy, with 800-W power, holding time was 26 min to synthesize by novel melting in microwave and quenched suddenly. The study focused on borosilicate glasses such as physical, optical, and luminescent characteristics. The prepared glasses were subjected to evaluate density, molar volume, and refractive index. The optical absorption spectra of glasses were measured in the range of 200–2000 nm. The surface plasmon resonance of AgNPs peaks resonates with the radiative transitions of Dy2O3 ions at 429 nm. The emission spectra in the visible region showed three peaks in the range 450–700 nm, and the excitation spectra of developed glass samples in the range of 200–500 nm, most intense peak was observed at 351 nm. Asymmetry ratio enhancement was achieved by changing the excitation wavelength and silver nanoparticle concentration. The highest Y/B value of 1.532 was observed at 1.0 mol%. The non-exponential lifetime decay curves of 0.3, 0.5, and 1.0 mol%, show 0.337, 0.376, and 0.269 ms respectively. J-O parameter shows trend Ω2 > Ω6 > Ω4. Synchrotron studies were subjected to comprehend the coordination chemistry of silver nanoparticles, dysprosium ions, and correlated with the results obtained.