Issue 35, 2020

Three ring-shaped Zr(iv)-substituted silicotungstates: syntheses, structures and their properties

Abstract

Three Zr(IV)-substituted polyoxometalate nanoclusters, H16(H2dap)4[{Zr2(OH)2(α-SiW10O38)}2{Zr2(OH)2(β-SiW10O38)}2]·8H2O (1, dap = 1,3-diaminopropane), H17Na9[(Zr2(OH)2)2(Zr2BO(OH)4)2(β-SiW10O38)4]·50H2O (2) and H20Na8[(Zr2BO(OH)4)2(Zr2B2O2(OH)5)2(β-SiW10O38)4]·40H2O (3), were made by a hydrothermal reaction of trivacant [A-α-SiW9O34]10−, Zr4+ ions, and H3BO3 under different alkaline conditions. Single-crystal X-ray structure analysis revealed that they are ring-shaped polyoxotungstate aggregates built by Zr2(OH)2 ({Zr2}) clusters and two types of dilacunary α-/β-SiW10O38 ({α-/β-SiW10}) fragments for 1, {Zr2}, {β-SiW10}, and Zr2BO(OH)4 ({Zr2B}) clusters for 2, and {β-SiW10}, {Zr2B}, and Zr2B2O2(OH)5 ({Zr2B2}) clusters for 3, respectively, showing that the Zr–B–O clusters, {Zr2B} and {Zr2B2}, have been introduced to the lacunary sites of polyoxometalates for the first time. The electrochemistry and electrocatalytic properties of 2 were studied, and it exhibited effective catalytic activities for the reduction of H2O2, NO2, and BrO3. Moreover, the catalysis of 2 for the oxidation reactions of various thioethers was investigated, and it was found that 2 possessed high conversion and remarkable selectivity.

Graphical abstract: Three ring-shaped Zr(iv)-substituted silicotungstates: syntheses, structures and their properties

Supplementary files

Article information

Article type
Paper
Submitted
14 abr. 2020
Accepted
02 ago. 2020
First published
05 ago. 2020

Nanoscale, 2020,12, 18333-18341

Three ring-shaped Zr(IV)-substituted silicotungstates: syntheses, structures and their properties

Z. Zhang, Y. Wang, Y. Liu, S. Huang and G. Yang, Nanoscale, 2020, 12, 18333 DOI: 10.1039/D0NR02945A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements