Controllable Synthesis and Catalytic Performance of Nanocrystals of Rare-Earth-Polyoxometalates

Shujun Li, Yanfang Zhou, Qingpo Peng, Ruoya Wang, Xiaoge Feng, Shuxia Liu, Xiaoming Ma, Nana Ma, Jie Zhang, Yi Chang, Zhiping Zheng, Xuenian Chen

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Large-scale isolation of nanocrystals of rare-earth-polyoxometalates (RE-POMs) catalysts is important in fundamental research and applications. Here, we synthesized a family of monomeric RE-POMs by the self-assembly of Ta/W mixed-addendum POM {P2W15Ta3O62} and rare-earth (RE) ions. These RE-POMs with molecular formulas of [RE(H2O)7]3P2W15Ta3O62·nH2O (RE = Y, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) are all electroneutral molecular clusters, insoluble in water and common organic solvents. The electronic structures, electrochemical properties, and catalytic activities of them have been investigated by experimental and computational methods. In particular, based on a mild and controllable synthetic process, a convenient and controllable approach to prepare nanocrystals and self-organized aggregates of these monomers has been developed. They exhibit remarkable heterogeneous catalytic activity for cyanosilylation. Both the increased Lewis acid strength of RE in the title compounds, as indicated by theoretical calculations, and the decreased particle size contribute to their high catalytic performances.

Original languageEnglish (US)
Pages (from-to)6624-6631
Number of pages8
JournalInorganic Chemistry
Volume57
Issue number11
DOIs
StatePublished - Jun 4 2018
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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