High temperature stable bismuth vanadate composite pigments via vanadyl-exchanged zeolite precursors

摘要

A novel and facile route for synthesising inclusion-stabilised monoclinic bismuth vanadate via solid-state reaction of vanadyl-exchanged zeolites with pentavalent bismuth species is presented. In this report, these new composite materials are extensively analysed and characterised. Most notably, ion scattering spectroscopy is employed as a non-standard and highly surface sensitive characterisation technique to determine surface compositions and to prove that the composites feature alumosilicate protected bismuth vanadate. Thermal stability tests relating to colouristic performance are conducted to demonstrate the superior thermal resilience of these compounds, maintaining better colouristic properties compared to commercial bismuth vanadate even at very high temperatures. (C) 2017 Elsevier Ltd. All rights reserved.