化工进展 ›› 2016, Vol. 35 ›› Issue (09): 2875-2884.DOI: 10.16085/j.issn.1000-6613.2016.09.032

• 材料科学与技术 • 上一篇    下一篇

金属-有机骨架复合材料的制备及其二氧化碳吸附性能

朱晨明1,2, 王保登2, 张中正2, 王慧2, 张海娇1, 孙楠楠2, 魏伟2, 孙予罕2   

  1. 1 上海大学环境与化学工程学院纳米化学与生物学研究所, 上海 200444;
    2 中国科学院上海高等研究院低碳转化科学与工程重点实验室, 上海 201210
  • 收稿日期:2015-12-21 修回日期:2016-04-11 出版日期:2016-09-05 发布日期:2016-09-05
  • 通讯作者: 孙楠楠,副研究员,研究方向为二氧化碳捕集、利用和封存。E-mail:sunnn@sari.ac.cn;魏伟,研究员。E-mail:weiwei@sari.ac.cn。
  • 作者简介:朱晨明(1992-),男,硕士研究生,研究方向为二氧化碳捕集。
  • 基金资助:

    Drexel-SARI国际合作基金项目(Y426474232)。

Preparation and CO2 adsorption performance of metal-organic framework composites

ZHU Chenming1,2, WANG Baodeng2, ZHANG Zhongzheng2, WANG Hui2, ZHANG Haijiao1, SUN Nannan2, WEI Wei2, SUN Yuhan2   

  1. 1 Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China;
    2 CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
  • Received:2015-12-21 Revised:2016-04-11 Online:2016-09-05 Published:2016-09-05

摘要: 通过原位溶剂热法分别合成了HKUST-1、MIL-101、UiO-66与羟基化介孔氧化硅泡沫(MCF-OH)的复合物,并对材料进行了PXRD、SEM、低温N2吸-脱附、XPS、TGA表征及298K下的CO2吸附测试。结果显示:3种复合材料中都形成了对应MOFs的晶型结构,但由于各类MOFs金属中心的不同,MCF-OH对MOFs的形貌产生了不同的影响。其中,HKUST-1#MOF-OH复合材料中MCF-OH的加入对HKUST-1的生长起到了导向作用,在两者界面间形成了新的介孔结构,并且其微孔孔径尺寸更接近CO2的动力学直径。另外两种复合材料中MCF-OH的加入主要对其MOFs晶型颗粒的生长起到了限制作用,使其晶型颗粒尺寸减小,从而带来了比表面积的增加。3种复合材料的CO2吸附量都较纯MOFs材料有所提高,并且由于HKUST-1#MOF-OH复合材料中微孔孔径尺寸的减小以及新的介孔结构的引入使其对CO2的吸附更加高效,因此其较纯MOFs材料的吸附性能提升效果最为明显。

关键词: 二氧化碳捕集, 吸附(作用), 金属有机骨架材料, 介孔氧化硅泡沫, 复合材料

Abstract: Composites of HKUST-1,MIL-101,UiO-66 with hydroxyl group functionalized siliceous mesocellular foam(MCF-OH) were prepared by in-situ hydrothermal method,and the materials were characterized by means of PXRD,SEM,N2 adsorption,XPS,TGA measurements,and CO2 adsorption performance was measured at 298K. It was found that the morphologies of MOFs were different because of the different central metals in MOFs. For the HKUST-1#MOF-OH composite,MCF-OH directed the growth of HKUST-1 on MCF-OH surfaces,new mesopores was formed on the interface between HKUST-1 crystal and MCF-OH and its pore size was closer to the kinetic diameter of CO2 than that of pure HKUST-1. For other composites,the growth of MOFs crystal particles was hindered, leading to smaller MOFs crystal particles and higher BET surface areas than the pure MOFs. All the composites showed higher CO2 adsorption capacities than pure MOFs,and because of the decreased micropore sizes and the introduction of new mesoporous structure,the HKUST-1#MCF-OH composite has the most increment of CO2 capacity among all the composites.

Key words: CO2 capture, adsorption, metal-organic framework, siliceous mesocellular foam, composites

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