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

	[English] PDF (Migrated (PDF/A Conversion) from original format: (application/pdf)) - Published Version Available under License Creative Commons Attribution Non-commercial. Download (818kB) [English] PDF - Published Version Available under License Creative Commons Attribution Non-commercial. (Original Version)

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.

Actions (login required)

View Item