Journal
APPLIED SURFACE SCIENCE
Volume 284, Issue -, Pages 855-861Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2013.08.022
Keywords
Hierarchical; alpha-Fe2O3; Hollow spheres; Adsorption; Water treatment
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Funding
- National Natural Science Foundation of China [91022032, 21171001, 21173001]
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A simple one-step method has been developed for the controllable synthesis of hierarchical flower-like alpha-Fe2O3 hollow spheres in a glycerol-ethanol system. It is found that the volume ratio of glycerol/ethanol and reaction time have a significant effect on the morphology of the products. The growth process of alpha-Fe2O3 hollow spheres has been investigated and a possible mechanism is proposed. The alpha-Fe2O3 hollow spheres have a high surface area of 98 m(2) g(-1) and a total pore volume of 0.32 cm(3) g(-1), which exhibit outstanding water treatment performance with high removal capacities toward organic dyes and heavy metal ions. The as-obtained products may have potential applications in water treatment and other related micro-or nanoscale devices. (C) 2013 Elsevier B. V. All rights reserved.
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