Preparation and characterization of silicon nanomaterials with different morphologies

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Yang, Lili^1^2^3 ; Tang, Yunmin^1 ; Hu, Shunxuan^1 ; Zhou, Baonan^1 ; Liu, Ke^1

Department of Chemistry, Southern University of Science and Technology, Shenzhen, China^1

School of Chemistry and Chemistry Engineering, South China University of Technology, Guangzhou, China^2

School of Materials and Environment, Beijing Institute of Technology, Zhuhai, China^3

关键词: Ash removal;    Chemical activities;    Coal and minerals;    Conventional flotation;    High surface energy;    Hydrophilic silica;    Inorganic mineral;    Micro-emulsion methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/2/022004/pdf
DOI  :  10.1088/1757-899X/490/2/022004

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

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.