【摘要】 研究了含偕胺肟基螫合纤维对Au³⁺的吸附特征及影响吸附量的因素。结果表明,含偕胺肟基螫合纤维对Au³⁺的吸附量极高,而且将所吸附的Au³⁺还原成单质金;在含Au³⁺、Cu²⁺+、Zn²⁺和Cr³⁺的溶液中,对Au³⁺具有相当高的吸附选择性。提高偕胺肟基在螯合纤维中的含量及吸附温度和Au³⁺的初始浓度等均有利于提高吸附量。更多还原

【Abstract】 The adsorption behavior of Au(Ⅲ) ion onto the chelating fiber containing amidoxime group was investigated, and the factors to influence the adsorption capacity were discussed. The chelating fiber presents a high adsorption capacity to Au(Ⅲ) ion, and is able to reduce the adsorbed Au(Ⅲ ) ion into metallic gold. In the solution containing Au(Ⅲ),Cu(Ⅱ),Zn(Ⅱ) and Cr( Ⅲ ), the fiber presents a high selectivity to Au(Ⅲ). With increasing amidoxime group content in the fiber, temperature and initial concentration of Au(Ⅲ) ion, the adsorption rate and capacity increase.更多还原