Sol‐Gel Synthesis and Photocatalytic Study of Visible Light Active N‐Doped KSbWO₆

Abstract

Abstract. KSbWO 6 was prepared by sol-gel method. N-doped KSbWO 6 (KSbWO 6-x N x ) was obtained by heating KSbWO 6 and urea at 400°C. Both the compounds are characterized by powder X-ray diffraction (XRD), TEM, SEM-EDS, X-ray photo electronic spectroscopy (XPS), and UV/Vis diffuse reflectance spectroscopy (UV-DRS). A shift in the peak positions of powder XRD and XPS spectra was observed. The band gap energy (E g ) of KSbWO 6 and N-doped

Preparation of Visible Light Active Ag‐ and N‐Doped KVMoO6: Photodegradation of Methylene Blue

“…NH 4 6 (N-KVMoO 6 ) was prepared using urea as reported earlier [28]. A thoroughly ground mixture of KVMoO 6 and urea (CO(NH 2 ) 2 ) in the weight ratio of 1:2 was heated at 400°C for 2 h in a muffle furnace in air.…”

Preparation, characterization and photocatalytic studies of N, Sn-doped defect pyrochlore oxide KTi0.5W1.5O6

“…The N-doped KTi 0.5 W 1.5 O 6 was prepared using urea (CO(NH 2 ) 2 ) as reported earlier [18]. A thoroughly ground mixture of KTi 0.5 W 1.5 O 6 (1.0 g) and urea (2.0 g) in the weight ratio of 1:2 was heated at 400 °C for 2 h in a muffle furnace.…”

Preparation, Characterization and Photocatalytic Studies of Cr2(MoO4)3 and Nitrogen-Doped Cr2(MoO4)3

“…In the 673-1073 K region CMON sample registered a weight gain of 0.11 %. It is well known that N-doped oxides gain weight on heating to above 673 K due to the release of gaseous nitrogen and becomes pure oxides [7]. Based on the TG profiles, the molecular formula of CMON can be written as Cr 2 (MoO 4-x N y ) 3 0.01H 2 O (wt % of N is 0.11).…”

“…Thus, the introduction of nitrogen into the CMO lattice reduces the bandgap energy considerably as seen from the red shifts of the absorption band edge. It can be ascribed to the widening of the valence band, resulting from the hybridization of N 2p and O 2p [7].…”

“…The properties of these oxides can be tailored by substituting the anions and/or cations in their lattices [6,7]. Molybdates and tungstates of composition A 2 M 3 O 12 (M = Mo, W) have been extensively investigated for their negative thermal expansion (NTE) phenomena.…”