Preparation and characterization of silicon nanomaterials with different morphologies

Coal combustion produces a large number of pollutants, leading to serious air pollution. The development of efficient ash removal technology from coal is imminent. Coal is a mixture of carbonaceous organic matter and inorganic mineral ash. Usually, the clean coal and inorganic mineral ash are separa...

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Published inIOP conference series. Materials Science and Engineering Vol. 490; no. 2; pp. 22004 - 22009
Main Authors Yang, Lili, Tang, Yunmin, Hu, Shunxuan, Zhou, Baonan, Liu, Ke
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.04.2019
Subjects
Ash removal
Chemical activity
Coal
Flocculation
Flotation
Hydrophobicity
Morphology
Nanomaterials
Nanorods
Organic matter
Pollutants
Silicon dioxide
Surface energy
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Summary:Coal combustion produces a large number of pollutants, leading to serious air pollution. The development of efficient ash removal technology from coal is imminent. Coal is a mixture of carbonaceous organic matter and inorganic mineral ash. Usually, the clean coal and inorganic mineral ash are separated by flotation according to the Hydrophobicity of carbonaceous organic matter and the hydrophilicity of inorganic mineral ash. Hydrophilic silica nanorods we prepared have high surface energy and chemical activity, which is easy to adsorb inorganic mineral ash, and then be floatated by flocculation. In this paper, a series of silicon nanomaterials with different morphologies were prepared by microemulsion method. On the basis of hydrophobic difference between coal and mineral ash, The inorganic ash minerals are adsorbed on the nanomaterials, and then separated by conventional flotation. At the same time, we used XRD and SEM to characterize the silicon nanomaterials.
ISSN:1757-8981
1757-899X
1757-899X
DOI:10.1088/1757-899X/490/2/022004