Abstract
Magnesium oxysulfate whisker (MOSW) was produced using magnesite and sulfuric acid as raw materials by hydrothermal method and further modified by taking zinc stearate as modifier via wet chemical method. The influences of the amount of modifier, slurry concentration, modification duration, modification temperature and the stirring rate on the surface modification were investigated. The effects of surface modification in functional groups, morphology and electron binding energies of surface elements of MOSW were characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The mechanism of modification was analyzed by studying the microstructure model of the surface of MOSW, which was modified by zinc stearate. The results show that the coordination is generated by the Mg element and O in carboxylic ion of modifier, and the chemical bond could be obtained by modification. Moreover, the surface of MOSW bonds the molecules of zinc stearate, and it becomes rough. Then, the hydrophobicity of MOSW is also improved significantly. In addition, the 1s electron binding energies of Mg and O on the surface of MOSW decrease by 1.2 and 0.2 eV, respectively.
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References
Zhang DH. Preparation and Characterization of Magnesium Whiskers. Qingdao: Ocean University of China; 2004. 43.
Yang LJ, Wang JL, Yang CT, Mei LR. Preparation of silicon nanowires by hydrothermal and its physical properties. Chin J Rare Met. 2013;37(4):564.
Xue JR, Zhong H, Gao J, Fu JG. Hydrothermal synthesis of magnesium oxysulfate whiskers. Inorg Chem Ind. 2011;43(5):30.
Gao CH, Xu J, Wang CX, Wu YM, Li XG. Growth mechanism of magnesium oxysulfate whiskers syntheticed via one-step hydrothermal method. J Chin Ceram Soc. 2011;39(5):773.
Xiang L, Liu F, Jin Y. Hydrothermal formation and characterization of magnesium oxysulfate whiskers. Mater Chem Phys. 2004;87:424.
Gao CH, Li XG, Feng LJ. Preparation and thermal decomposition of 5Mg(OH)2·MgSO4·2H2O nanowhiskers. Chem Eng J. 2009;150:551.
Liu F, Lan X, Jin Y. The preparation of magnesium oxysulfate whiskers via the hydrothermal method. Sea Lake Salt Chem Ind. 2003;32(4):1.
Li J, Li X, Jin Y. Hydrothermal formation of magnesium oxysulfate whiskers in the presence of ethylene diaminetetraacetic acid. J Mater Sci. 2006;41:1345.
Yan XX, Xu DL, Xue DF. SO4 2− ions direct the one-dimensional growth of MgSO4·5Mg(OH)2·3H2O. Acta Mater. 2007;55:5747.
Jiang YZ, Han YX, Yin WZ. The preparation of magnesium oxysulfate whiskers. Metal Mines. 2006;(9):46.
Dong YH, Li J, Zhang YZ, Hou YL. Self-cleaning function of TiO2 nanoparticles aeronautical coatings. Chin J Rare Met. 2014;38(5):741.
Dong BH, Wu F, Alajmi Z, Zhang C, Fu T, Ge Y. Sol–gel derived Ta-containing TiO2 films on surface roughened NiTi alloy. Rare Met. 2014;33(1):21.
Yang Z, Wu YZ, Ye YF, Gong MG, Xu XL. A facile way to fabricate aluminum sheet with superhydrophobic and self-cleaning properties. Chin Phys B. 2012;21(12):126801.
Luo LM, Lu ZL, Li H, Luo GN, Zan X, Wu YC. Current status and development trend on rare earth modified tungsten alloys. Chin J Rare Met. 2013;37(6):994.
Han YX, Li LX, Yin WZ, Chen C. The surface modification of magnesium oxysulfate whiskers. J Northeast Univ (Nat Sci). 2009;30(1):134.
Chen X. The Modification and research on modification and application of basic magnesium sulfate and magnesium hydrate whiskers. Shenyang: Northeastern University; 2007. 58.
Yuan QH, Lu ZW, Luo ZK, Luo XB, Ren XZ. Synthesis of highly-dispersed Mg(OH)2 particles via EDA-modification process. J Mater Sci Eng. 2013;31(1):61.
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This study was financially supported by the National Natural Science Foundation of China (No. 51272163).
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Jiang, YZ., Wang, CY., Xu, ZS. et al. Surface modification mechanism of magnesium oxysulfate whiskers via wet chemical method. Rare Met. 35, 874–880 (2016). https://doi.org/10.1007/s12598-015-0543-0
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DOI: https://doi.org/10.1007/s12598-015-0543-0