【摘要】 通过优化水热合成条件成功合成出具有八面纳米棒形貌的Faujasite沸石材料（长度300～900 nm,截面宽度20～50 nm）,该材料的理论分子式为Na₁₄Al₁₂Si₁₃O₅₁·6H₂O。将此沸石材料用于溶液中重金属离子的吸附研究，结果表明：该沸石材料对Cu²⁺、Cd²⁺、Pb²⁺和Ni²⁺的极限吸附量分别为250、323、1 075和256 mg/g。吸附过程在开始后的100分钟内达到吸附平衡，溶液pH的提高可以促进表观吸附。准二级动力学方程和Langmuir吸附等温线能够良好地拟合沸石材料对四种重金属离子的吸附过程。DFT模型计算结果显示，各重金属吸附构型的稳定性和吸附过程发生的趋势顺序均为Pb>Cd>Ni>Cu。更多还原

【Abstract】 Through the optimization of hydrothermal synthesis conditions, Faujasite zeolite materials with octahedral nanorod morphology（micro length of 300-900 nm, cross-section length of 20-50 nm） were successfully synthesized.The theoretical molecular formula of material of Na₁₄Al₁₂Si₁₃O₅₁·6H₂O.The zeolite material was applied to adsorb heavy metals in solution.The results illustrate that the ultimate adsorption capacity of Cu²⁺,Cd²⁺,Pb²⁺ and Ni²⁺ is 250,323,1 075 and 256 mg/g, respectively.The adsorption process can reach saturation within 100 minutes, and the increase of pH value of solution can accelerate the improvement of apparent adsorption effect.The quasi-second-order kinetic equation and Langmuir adsorption isotherm can be used to fit the adsorption process of four heavy metal ions by zeolite.The calculation results of DFT display that the stability of adsorption configuration of each heavy metal and the trend sequence of the adsorption process are Pb>Cd>Ni>Cu.更多还原