2026-10-11T14:46:02Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33907552 2026-09-17T18:31:04Z portal_1197 item_type_3 month_year_09_2026

Data for Thermal transformation of V+Bi+Zn single-source precursors: identification of amorphous intermediates and a new kinetic phase of BiVO4 Sebastian D. Pike (25016689) Migrated from ePrints Molecular single-source precursors are a promising way of obtaining multi-element extended solids directly. We show that thermal decomposition of well-defined mono-, bi- and trimetallic polyoxovanadates (POVs) proceeds through a series of intermediate amorphous and crystalline species which we characterize using solid-state NMR spectroscopy, Pair-Distribution Function (PDF) analysis and in-situ X-ray diffraction, before forming crystalline V2O5 and BiVO4 products. This synthetic strategy enables the formation of phases inaccessible using other routes including a previously unknown polymorph of BiVO4 which we name β-BiVO4 due to its similarity to β-SnWO4. Local structure information also reveals the temperature dependent incorporation of Zn dopants into BiVO4. The study also explores the electrochemical properties of new amorphous mixed-valence vanadium oxides as Li-ion battery electrodes. We suggest that careful analysis of the thermal decomposition of molecular species may be a way of obtaining hitherto unknown kinetically stabilized polymorphs and amorphous variants of extended solids.<br><br>IR and UV-vis spectroscopy, powder X-ray diffraction, X-ray pair distribution function data, thermogravimetric analysis of precursors and products following annealing of precursors as described in the associated publication. XANES of 1 and 1 heated to 200 degrees vs vanadium standards. Electrochemical data of 1_200 as described in associated publication. 2026-09-17T18:31:04Z Dataset Dataset 10.82444/warw.33907552.v1 https://figshare.com/articles/dataset/Data_for_Thermal_transformation_of_V_Bi_Zn_single-source_precursors_identification_of_amorphous_intermediates_and_a_new_kinetic_phase_of_BiVO4/33907552 CC BY 4.0