高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (9): 1596-1604.doi: 10.7503/cjcu20160253

• 研究论文: 无机化学 • 上一篇    下一篇

H6P2Mo18O62/Zn(BDC)(Bipy)0.5复合材料的合成、 表征及对亚甲基蓝的吸附

龚文朋, 田超强, 杜晓刚, 杨水金()   

  1. 湖北师范大学化学化工学院, 先进材料研究院, 污染物分析与资源化技术湖北省重点实验室, 黄石 435002
  • 收稿日期:2016-04-18 出版日期:2016-09-10 发布日期:2016-08-26
  • 作者简介:联系人简介: 杨水金, 男, 博士, 教授, 主要从事多酸化学和无机功能材料研究. E-mail:yangshuijin@163.com
  • 基金资助:
    国家自然科学基金(批准号: 21171053)、 湖北师范大学研究生创新科研基金(批准号: 20160107)和湖北省自然科学基金重点项目(批准号: 2014CFA131)资助

Synthesis and Characterization of Composite H6P2Mo18O62/Zn(BDC)(Bipy)0.5 and Its Adsorption Activity for Methylene Blue

GONG Wenpeng, TIAN Chaoqiang, DU Xiaogang, YANG Shuijin*()   

  1. College of Chemistry and Chemical Engineering, Institute for Advanced Materials, Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Hubei Normal University, Huangshi 435002, China
  • Received:2016-04-18 Online:2016-09-10 Published:2016-08-26
  • Contact: YANG Shuijin E-mail:yangshuijin@163.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21171053), the Postgraduate Innovation Scientific, Research Foundation of Hubei Normal University, China(No.20160107) and the Natural Science Foundation of Hubei Province, China(No.2014CFA131)

摘要:

在溶剂热条件下, 以H6P2Mo18O62、 对苯二甲酸(H2BDC)、 4,4'-联吡啶(Bipy)和硝酸锌为原料构筑了1个三维金属有机骨架复合材料H6P2Mo18O62/Zn(BDC)(Bipy)0.5, 并采用红外光谱(IR)、 X射线衍射(XRD)、 扫描电子显微镜(SEM)、 热重分析(TG)、 N2吸附-脱附等手段对产物进行了表征. 同时, 研究了产物对水溶液中亚甲基蓝(MB)的吸附性能, 并探讨了MB初始pH值、 初始浓度和温度对吸附量的影响. 结果表明, 产物的等温吸附模型符合Langmuir等温吸附模型, 动力学符合拟二级动力学. H6P2Mo18O62/Zn(BDC)(Bipy)0.5对亚甲基蓝的吸附是自发和放热的, 此外, 产物对甲基紫、 罗丹明B、 孔雀石绿等阳离子染料也具有良好的吸附性能.

关键词: 三维金属有机骨架, H6P2Mo18O62, 吸附, 分离, 染料

Abstract:

By employing the H6P2Mo18O62, terephthalic acid(H2BDC), 4,4'-bipyridine(Bipy) to assemble with Zn2+ ion, a three-dimensional(3D) metal organic framework composite, named H6P2Mo18O62/Zn(BDC)(Bipy)0.5, was synthesized. The composition, structure, morphology, stability and toleration of H6P2Mo18O62/Zn(BDC)(Bipy)0.5 were characterized by X-ray powder diffraction pattern(XRD), Fourier transform infrared(FTIR) spectrum, scanning electron microscopy(SEM), thermogravimetric(TG) analysis and N2 adsorption-desorption analysis. The adsorption of methylene blue(MB) onto H6P2Mo18O62/Zn(BDC)(Bipy)0.5 in aqueous solution was studied. The effects of the experimental parameters including the temperature, the initial pH value and initial concentration of methylene blue solution were discussed. The experimental data could be well described by the Langmuir equations and pseudo-second-order kinetic model. The adsorption process of methylene blue on the composite was spontaneous and exothermic. Furthermore, we also explored the adsorption properties of H6P2Mo18O62/Zn(BDC)(Bipy)0.5 to methyl violet, malachite green, rhodamine B, and methyl orange. The results indicated that this new absorbent showed better adsorption performance towards cationic dyes.

Key words: Three-dimensional(3D) metal organic framework, H6P2Mo18O62, Adsorption, Separation, Dye

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