Issue 20, 2024

Self-assembly of a giant molybdenum titanium-oxo cluster [Mo42Ti12(O2)24] for bifunctional oxidation catalysis

Abstract

The exploration of high-nuclearity molecular molybdenum titanium-oxo clusters (MoTOCs) and their reactivity is a great challenge for polyoxometalate chemistry and materials science. Herein, we report a giant MoTOC [K8(H2O)8][Ti12(O2)6(OH)12Mo42O124(O2)18(H2O)17]·31H2O (1) by self-assembly of degraded lacunary isopolymolybdate fragments and peroxide-stabilized titanium ions in aqueous solution. Compound 1 features 54 metal centers and a rare pure inorganic triangular prism structure with a size of 1.8 × 1.8 × 1.5 nm3, which is the first and largest water-soluble MoTOC found to date. More importantly, it contains multiple peroxo groups on the surface, which makes it exhibit superior benzyl alcohol/benzaldehyde (photo)catalytic oxidation performance. This work opens an unusual avenue for the synthesis of giant MoTOCs.

Graphical abstract: Self-assembly of a giant molybdenum titanium-oxo cluster [Mo42Ti12(O2)24] for bifunctional oxidation catalysis

Supplementary files

Article information

Article type
Research Article
Submitted
17 jul. 2024
Accepted
01 sep. 2024
First published
03 sep. 2024

Inorg. Chem. Front., 2024,11, 6981-6987

Self-assembly of a giant molybdenum titanium-oxo cluster [Mo42Ti12(O2)24] for bifunctional oxidation catalysis

M. Xu, T. Wang, W. Zhang, K. Guo, P. Wang, C. Qin, L. Xu, Z. Su and X. Wang, Inorg. Chem. Front., 2024, 11, 6981 DOI: 10.1039/D4QI01795A

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