High-temperature stabilized defect pyrochlore Bi_2−xFe_xWO₆ nanostructures and their effects on photocatalytic water remediation and photo-electrochemical oxygen evolution kinetics

Abstract

Herein, Fe3+ ions substituted Bi2WO6 nanostructures have been fabricated by a facile co-precipitation technique with Fe concentrations varying from X = 0, 0.2, 0.5, 1.0, and 1.5. X-ray diffraction analysis...

Pyrochlore phase in the Bi2O3-Fe2O3-WO3-(H2O) system: its formation by hydrothermal synthesis in the low-temperature region of the phase diagram

“…Currently, there is an increased interest in ternary and more multicomponent pyrochlores containing d-elements, since this class of complex oxides has a set of promising physicochemical properties, among which are magnetic [6][7][8], electrophysical [9,10], catalytic [11,12] and optical [13][14][15] ones. In most of the presented works, the pyrochlore phase is obtained by the solid-state synthesis [6][7][8][9][10][11]13], and only in some works, chemistry methods are used to obtain the pyrochlore phase, in particular, by the hydrothermal method [12,[14][15][16] or by co-precipitation followed by annealing [17,18]. Important advantages of the hydrothermal method are the possibility of obtaining nanocrystalline materials and synthesizing oxide phases that are unstable at elevated temperatures [19,20].…”