Structural, thermal, and electrical properties of (100−x) ZrO2 (x) Bi2O3 compound

Abstract

Composition (100−x) ZrO 2 (x) Bi 2 O 3 (x015, 20, 25) is synthesized by solid-state reaction method to study the effect of Bi 2 O 3 doping on ZrO 2 . The asprepared samples are characterized by various methods. The X-ray diffraction pattern of all these samples exhibits three phases, namely, m-ZrO 2 , β III -Bi 2 O 3 , and γ-Bi 2 O 3 . The differential thermal analysis curves do not show any phase transition/decomposition, which clearly indicated the stabilization of γ-Bi 2 O 3 phase. The conductivity changes in all the samples are discussed in terms of different phase formations and their volume fractions. The microstructural and energy dispersive analyses indicate the presence of different phases. A maximum conductivity at high temperature (800°C) was observed for the x025 composition, i.e., σ04.21× 10 −2 S/cm.

PRECURSORS-DECOMPOSITED SYNTHESIS AND VISIBLE-LIGHT-RESPONSE PHOTOCATALYSTIC PROPERTIES OF UNIFORM POROUS Bi2O3 NANOSPHERES

“…18 Due to the strong e®ects of particle size on light absorption, charge-carrier dynamics and surface area, much e®ort has been made to control the synthesis of Bi 2 O 3 nanostructures in order to optimize their particle sizes, crystallinity, morphologies and defects at nanometer scale. 19 21 and nanotubes, 26 have been synthesized through di®erent approaches including vapor electro-spinning, 23 transport deposition, 24 hydrothermal treatment, 25 solid-state thermal decomposition, 27 etc. Furthermore, many studies show the porous structures can obviously enhance the activities of semiconductor photocatalysts because of their large surface area and porous frameworks.…”