Jump to main content
Jump to site search

Issue 14, 2019
Previous Article Next Article

A simple one-step synthetic route to access a range of metal-doped polyoxovanadate clusters

Author affiliations

Abstract

VO(OiPr)3 is a useful precursor for the synthesis of a range of metal-doped polyoxovanadate (POV) cage compounds, its reactions with hydrated metal salts providing a route to arrangements containing Bi and other main group metals, transition metals and lanthanides. The new POV compounds [Bi2(DMSO)6V12O33Br]2[M(DMSO)6] (2Br-M, M = CoII, NiII, CuII, ZnII) [Bi2(DMSO)6V12O33Cl]2[Ca(DMSO)xyDMSO (2Cl-Ca), [Bi2(DMSO)6V12O33Cl]2[LnCl(DMSO)7] (2Cl-Ln, Ln = LaIII, CeIII, EuIII), [Bi2(DMSO)6V10O28F2]3[Bi(DMSO)5]2 (3), [V12O32(DMSO)][Gd(NO3)(DMSO)5.5]2 (4) and [Ln(DMSO)4V12O32Cl][LnCl(DMSO)7] (5Cl-Ln, Ln = CeIII, EuIII) have been structurally characterised, and their properties studied using UV-Vis spectroscopy and cyclic voltammetry. Drop-casting these compounds onto fluorine-doped tin oxide followed by calcination provides a simple approach to thin films of metal-doped BiVO4 or LnVO4, depending on the composition of the cage precursor. The applications of the BiVO4 films as photoanodes for water oxidation is explored, with transition metal doping of BiVO4 improving the activity (∼1.8–2.4 times the photocurrent density of undoped BiVO4 at 1.23 V vs. RHE) while lanthanide or Ca-doping is detrimental.

Graphical abstract: A simple one-step synthetic route to access a range of metal-doped polyoxovanadate clusters

Back to tab navigation

Supplementary files

Article information


Submitted
22 Dec 2018
Accepted
06 Mar 2019
First published
07 Mar 2019

Dalton Trans., 2019,48, 4555-4564
Article type
Paper

A simple one-step synthetic route to access a range of metal-doped polyoxovanadate clusters

H. Lu, R. B. Jethwa, K. J. Jenkinson, A. E. H. Wheatley, H. Hao, D. S. Wright and S. D. Pike, Dalton Trans., 2019, 48, 4555
DOI: 10.1039/C8DT05072D

Social activity

Search articles by author

Spotlight

Advertisements