Journal
APPLIED SURFACE SCIENCE
Volume 268, Issue -, Pages 213-217Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2012.12.061
Keywords
Pyrite; Solvothermal; Adsorption/photocatalysis
Categories
Funding
- Scientific Research Planning Program of Shaanxi Province of China [2011K07-13]
- Scientific Research Planning Program of the Education Department of Shaanxi Province [11JK0602]
- Scientific Research Planning Program of Key laboratory of Shaanxi Province of China [11JS022]
- Scientific Research Planning Program of Xianyang City [2011K09-09]
- Scientific Research Planning Program of Yulin City
- National Natural Science Funds of China [21275094]
- Graduate Innovation Fund of Shaanxi University of Science and Technology
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FeS2 crystallites were synthesized successfully via a solvothermal method, using potassium ferrocyanide K-4[Fe(CN)(6)]center dot 3H(2)O as Fe source, sulfur powder as S source in the presence of polyvinyl pyrrolidone (PVP) as dispersant. And potassium carbonate provided an alkaline environment. The phase and morphology of the products were characterized by means of X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). It was found that the temperature and solvent ratio (V-EtOH : V-H2O) play a crucial role in the formation of FeS2 with a cubic phase structure (pyrite). Then based on a series of experiments, the possible formation mechanism of pyrite FeS2 crystallites was proposed. In addition, research also showed that the as-prepared pyrite FeS2 crystallites could high-efficiently absorb or photocatalytically degrade some organic dyes such as Methylene blue (MB), Safranine T, Methyl orange (MO), Rhodamine B (Rh B) and Pyronine B. Furthermore, the adsorption and photocatalytic degradation abilities of FeS2 for organic dyes were also compared. (C) 2013 Elsevier B.V. All rights reserved.
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