Green synthesized AgNPs decorated on Ketjen black for enhanced catalytic dye degradation

Research on Chemical Intermediates - The green synthesis of nanoparticles using plant-based materials as an alternative to chemical and physical routes provides economic and environmental benefits....     

In Situ Synthesis of β-Na1.5Y1.5F6: Er3+ Crystals in Oxyfluoride Silicate Glass for Temperature Sensors and Their Spectral Conversion and Optical Thermometry Analysis

Transparent oxyfluoride glass-ceramics (GCs) with embedded β-Na₁.₅Y₁.₅F₆ crystals doped with Er³⁺ ions were fabricated by a melt-quenching method with subsequent heat-treatment. The structural characterizations and spectroscopic techniques were performed to verify the precipitation of β-Na₁.₅Y₁.₅F₆ crystals and partition of the Er³⁺ dopant into the crystals. Bright green up-conversion (UC) emission was achieved in Er³⁺-doped glass-ceramic (Er-GC). Furthermore, the temperature-dependent visible UC behavior based on thermally coupled energy levels (TCLs) and non-thermally coupled energy levels (NTCLs) was also examined in the temperature range 298 k to 823 K with maximum relative sensitivity (S_r) of 1.1% K⁻¹ at 298 K for TCLs in Er-G and Er-GC samples.