A simple solution calcination route to porous MgO nanoplates

Porous MgO nanoplates have been successfully synthesized using a single-step Mg(NO3)(2) solution calcination route without the assistance of any other additions. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) explorations indicated that the sizes of these nanoplates were ranging from 100 to 300 nm and the pores in them had diameters of about 2-50 nm. Nitrogen adsorption measurements for the prepared porous MgO nanoplates showed that the products had a BET (Brunauer-Emmett-Teller) surface area of 190 m(2) g(-1). PL (photoluminescence) spectrum of the products exhibited a visible light emission. Based on these investigations, the products were expected to find wide applications in biologic, catalytic and optoelectronic fields. Thermogravimetric (TG) analysis provided insight into the decomposition process of the Mg(NO3)(2) solution precursor. A possible growth mechanism of the products was also explained. (c) 2006 Elsevier Inc. All rights reserved.