Layered Double Hydroxide Nanocluster: Aqueous, Concentrated, Stable, and Catalytically-Active Colloids towards Green Chemistry

Tokudome Yasuaki

Morimoto Tsuyoshi

Tarutani Naoki

Vaz Pedro D.

Nunes Carla D.

Prevot Vanessa

Stenning Gavin

Takahashi Masahide

ACS Nano

Increasing attention has been dedicated to the development of nanomaterials rendering green and sustainable processes, which avail in benign aqueous reaction media. Herein, we demonstrate the synthesis of a novel family of green nanomaterials, layered double hydroxide (LDH) nanoclusters, which are concentrated (98.7 g/L in aqueous solvent), stably-dispersed (transparent sol for >2 weeks), and catalytically-active colloids of nano LDHs (isotropic shape with the size of 7.8 nm by SAXS). Proof-of-concept applications revealed that the LDH nanocluster works as a solid basic catalyst and allows easy-separation from solvents of catalytic reactions, confirming the nature of nanocatalysts. The present work closely investigates the unique physical/chemical features of this colloid, the formation mechanism, and the capability as basic nanocatalysts in benign aqueous reaction systems.

eng

American Chemical Society

© 2016 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsnano.6b02110. This is not the published version, please cite only the published version.

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[ISSN] 1936-086X

[NCID] AA1240653X

[DOI] 10.1021/acsnano.6b02110

[DOI] https://doi.org/10.1021/acsnano.6b02110