4.6 Article

A Facile Process for the Preparation of Three-Dimensional Hollow Zn(OH)2 Nanoflowers at Room Temperature

Journal

CHEMISTRY-A EUROPEAN JOURNAL
Volume 22, Issue 32, Pages 11143-11147

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201600906

Keywords

adsorption; double-shelled materials; functional materials; nanoflowers; zinc

Funding

  1. National Institutes of Health [GM079359, CA133086]
  2. National Key Scientific Program of China [2011CB911000]
  3. NSFC [NSFC 21221003, NSFC 21327009]
  4. China National Instrumentation Program [2011YQ03012412]

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A facile strategy has been developed to synthesize double-shelled Zn(OH)(2) nanoflowers (DNFs) at room temperature. The nanoflowers were generated via conversion of Cu2O nanoparticles (NPs) using ZnCl2 and Na2S2O3 by a simple process. Outward diffusion of the Cu2+, produced by an oxidation process on the surface of NPs, and the inward diffusion of Zn2+ by coordination and migration, eventually lead to a hollow cavity in the inner NPs with a double-shelled 3D hollow flower shapes. The thickness of the inner and outer shells is estimated to be about 20 nm, and the thickness of nanopetals is about 7 nm. The nanoflowers have large surface areas and excellent adsorption properties. As a proof of potential applications, the DNFs exhibited an excellent ability to remove organic molecules from aqueous solutions.

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