Hydrothermal synthesis of defect-induced pristine α-NaCe(WO₄)₂: a novel material for solid state lighting and gas sensing

Abstract

Triclinic NaCe(WO4)2 with oxygen monovacancy and divacancy has been successfully prepared by a facile cetyltrimethyl ammonium bromide (CTAB) assisted hydrothermal technique. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron...

A truncated octahedron NaCe(MoO4)2 nanostructure: a potential material for blue emission and acetone sensing

“…The binding energy data of all elements were adjusted with respect to the binding energy (∼284.6 eV) of surface-adsorbed atmospheric C 1s. 14 The survey scans for all the synthesized samples are presented in Fig. S8 of the ESI,† while the high-resolution spectra of Mo, Ce, and O are illustrated in Fig.…”

“…As an example, Lin et al reported the V O -induced gas sensing activity of NaBi(MoO 4 ) 2 nanomaterials, 20 while our recent study demonstrated the NH 3 -sensing ability of NaCe(WO 4 ) 2 . 14 We herein also identify acetone-sensing ability in NaCe(MoO 4 ) 2 nanostructures, with V O and 2V O playing crucial roles in determining the sensitivity. To the best of our knowledge, this is the first report on the acetone-sensing ability of NaCe(MoO 4 ) 2 .…”

“…Each atom was exposed to a 0.01 eV Hellmann–Feynman force to ensure stable convergence, while the EDIFF and force EDIFG parameters were adjusted to 10 −6 eV and 10 −3 eV, respectively, to ensure high-precision computational convergence. 14…”

“…13 A triclinic → tetragonal phase transition was observed by our group during the CTAB-assisted hydrothermal synthesis of NaCe(WO 4 ) 2 . 14,15…”

Design of 3D flower-like NiWO4/WO3 heterostructures with excellent trimethylamine sensing performance

“…The sensing mechanism of metal oxide sensors typically involves changes in electrical properties arising from interactions between the target gas and the surface of the sensing material. 34,48 In the case of the WO 3 sensor, a considerable quantity of oxygen molecules in the air atmosphere adhere to the surface of the sensing film, capturing free electrons from the WO 3 conduction band and generating chemisorbed oxygen species (O 2 − , O − , and O 2− ) through the following reactions eqn (3)–(6), depending on the operation temperatures. 49 In this work, as shown in Fig.…”