Extreme high-pressure distortion phase of Bi2MoO6 in Bi2Mo0.94W0.06O6 at ambient pressure for augmented octahedral rotations and metal-oxide charge transport

TL;DR

This study investigates tungsten-doped bismuth molybdate, revealing structural distortions, increased band gap, and enhanced photocatalytic activity, with implications for sensor and capacitor applications.

Contribution

It provides detailed structural, optical, and catalytic insights into tungsten doping effects on Bi2MoO6, highlighting new photocatalytic properties.

Findings

W doping increases the band gap.

Structural distortion is mainly due to MoO6 octahedral rotation.

W-doped BMO shows improved photocatalytic activity.

Abstract

Bismuth molybdate (BMO) is the simplest compound of aurivillius familywith a wide range of application as a tunable capacitor and sensor. The present article deals with the study of astructural, optical and catalytic property of tungsten doped Bismuth molybdate. The crystal structure is critically studied by Rietveld structural refinement method by using X-ray powder diffraction data. Raman scattering indicates that the structural distortion in BMO is mainly due to the rigid rotation of MoO6 octahedra. Due to the introduction of tungsten, the system experienced an increase in the band gap, which is studied by Uv-vis spectroscopy and W doped BMO show remarkable photocatalytic behavior compared to pure one.