Strategy for Hydroxide Exclusion in Nanocrystalline Solid-State Metathesis Products

Poduska, Kristin M. and Cheng, Jiaqi (2013) Strategy for Hydroxide Exclusion in Nanocrystalline Solid-State Metathesis Products. Nanomaterials, 3 (3). pp. 317-324. ISSN 2079-4991

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Abstract

We demonstrate a simple strategy to either prevent or enhance hydroxide incorporation in nanocrystalline solid-state metathesis reaction products prepared in ambient environments. As an example, we show that ZnCO3 (smithsonite) or Zn5(CO3)2(OH)6 (hydrozincite) forms extremely rapidly, in less than two minutes, to form crystalline domains of 11 ± 2 nm and 6 ± 2 nm, respectively. The phase selectivity between these nanocrystalline products is dominated by the alkalinity of the hydrated precursor salts, which may in turn affect the availability of carbon dioxide during the reaction. Thus, unlike traditional aqueous precipitation reactions, our solid-state method offers a way to produce hydroxide-free, nanocrystalline products without active pH control.

Item Type: Article
URI: http://research.library.mun.ca/id/eprint/6209
Item ID: 6209
Keywords: solid-state synthesis, metathesis, nanoparticles, X-ray diffraction, vibrational spectroscopy
Department(s): Science, Faculty of > Physics and Physical Oceanography
Date: 24 June 2013
Date Type: Publication
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