Journal
SCIENCE OF ADVANCED MATERIALS
Volume 4, Issue 11, Pages 1179-1184Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/sam.2012.1411
Keywords
MnO2; Nanostructures; Poly(ethylene terephthalate); Flower-Like; Mesoporous
Funding
- Pre-research fund for the Technology Development of Harbin Normal University [10XYG-08]
- Program for Scientific and Technological Innovation Team Construction in Universities of Heilongjiang Province [2011TD010]
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A simple hydrothermal method was developed for synthesis of the flower-like alpha-MnO2 nanostructures composed of nanoflakes. The obtained MnO2 nanostructures have an average diameter of 300-600 nm. Surface area and pore size distribution of the flower-like nanostructures were characterized by the nitrogen adsorption-desorption isotherm measurements. The catalytic performance of the flower-like MnO2 nanostructures was evaluated in the degradation of poly(ethylene terephthalate) wastes using ethylene glycol as solvent, and the effects of various reaction conditions on the degradation were studied. FT-IR, H-1 NMR and DSC were used to identify the glycolysis products. It was found that bis(2-hydroxyethyl) terephthalate monomer was dominant in the product which was effectively separated from other oligomers in quite pure crystalline form.
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