SYNGAS PRODUCTION FROM CO₂-REFORMING OF CH₄OVER SOL-GEL SYNTHESIZED Ni-Co/Al₂O₃-MgO-ZrO₂NANOCATALYST: EFFECT OF ZrO₂PRECURSOR ON CATALYST PROPERTIES AND PERFORMANCE

Tunable photoluminescence properties of nano-sized Zr 1-x O 2 : x Dy 3+ phosphors

“…The intensity of the tetragonal phase increases with the increase in the Dy 3+ content. Furthermore, weak bands at 1384, 1635, and 2335 cm -1 are attributed to the absorption of non-bridging OH groups, the O-H bending vibration in the absorbed and coordinated water, and the asymmetric stretching frequency of CO 2 , respectively[14,19,20].The FTIR spectra of the Zr 0.999 O 2 :0.001Dy 3+ phosphors annealed at 800-1000 °C are shown inFig. 5(b).…”