Synthesizes and characterization of new double tungstate NaRE(WO4)2 (RE= Pr 3+, Ho 3+, Sm3+)

A simple hydrothermal route for the preparation of novel Na–Y–W nano-oxides and their application in dye degradation

“…Additional bands nearby 330 and 350 nm are assigned to the contaminants or vacant sites. 49 The bandgap quantity of the as-prepared sample S2 can be computed based on the absorption spectrum using the Tauc equation by extrapolating the linear part of the Tauc diagram ( Fig. 6d ).…”

Controllable hydrothermal synthesis and photoluminescence properties of CaGd2(WO4)4:Eu3+ red‐emitting phosphor

“…Figure 4 shows the FTIR spectra of CGW:Eu 3+ samples at pH = 8 under different reaction time. The broad peaks at 3432 cm −1 and 1637 cm −1 are attributed to the O‐H stretching vibration and H‐O‐H bending vibration of the hydrated water molecular and hydroxyl groups, respectively 17 . The absorption peaks at 930 cm −1 and 844 cm −1 are derived from the symmetric stretching vibration modes of WO 4 2− groups, and the strong peaks at 760 cm −1 and 699 cm −1 are due to the asymmetric stretching vibration modes of WO 4 2− groups.…”