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Title: Band gap engineering and photocatalytic activity of new trirutile structure Zn1-xMgxSb2O6 (0< x<1) solid solution
Authors: Arunkumar, Nagarajan
Keywords: Solid solution;Band gap engineering;Optical properties;Raman spectroscopy;Catalytic properties
Issue Date: Feb-2021
Publisher: NISCAIR-CSIR, India
Abstract: Solid solution of trirutile structure type antimonate Zn1-xMgxSb2O6 (0< x <1) and its photocatalytic activity is reported here. Compound has been characterized by powder X-ray diffraction and the data confirms the formation of single phasic trirutile products throughout the solid solution. SEM reveals spherical shaped particles with an average particle size of 0.25 – 0.5 µm. EDAX analysis confirms the elemental composition. Raman spectral modes of Zn1-xMgxSb2O6 characteristic of trirutile structure confirm Mg substitution into ZnSb2O6. UV – visible diffused reflectance spectra show optical absorption edge in the range of 370 – 318 nm. The band gap in the range of 3.35 – 4.05 eV has indicated the band gap engineering of Zn1-xMgxSb2O6 (0< x <1) and is explained by electro negativity and band dispersion. All the compositions of Zn1-xMgxSb2O6 have shown significant photocatalytic activity towards degradation of rhodamine B and it is maximum for MgSb2O6 whose remarkable photocatalytic activity is described here.
Page(s): 220-227
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.60A(02) [February 2021]

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