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论文类型：期刊论文

发表时间：2019-11-20

发表刊物：JOURNAL OF INORGANIC MATERIALS

收录刊物：SCIE、PKU

卷号：34

期号：11

页面范围：1181-1186

ISSN号：1000-324X

关键字：magnesium hydroxide sulfate hydrate; nanowire; potassium acid phthalate; complexation

摘要：Magnesium hydroxide sulfate hydrate (MOS) nanowires were prepared with hydrothermal method by using potassium acid phthalate (KHpht) as the complexant. Complexation formed by pht(2-) and Mg2+ in this preparation system was analyzed by potentiometric titration. The effect of pht(2-) adsorption on MOS nanowires was investigated by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectrometer (FT-IR) and transmission electron microscopy (TEM). These results show that pht(2-) complexes with Mg2+ in the reaction system substantially decreases free Mg2+ concentration and solution supersaturation. Chemical bonding between Mg2+ and pht(2-) exists on the surface of MOS crystal. Owing to the different configuration of the crystal lattice, pht(2-) adsorption on the lateral growth plane is more preferential than that on the axial growth plane, resulting in the formation with ratio of MOS nanowires.