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无机材料学报

无机材料学报

• 研究论文 •    

基于UiO-66骨架的氧化石墨烯改性金属有机框架凝胶的制备及其对甲苯的高效吸附性能

朱开煌1,2, 杨世杰2,3, 李欣格2,3, 宋贯卿2,3, 史淦升2, 王焱2, 任小孟4, 陆遥1, 徐新宏4, 孙静2   

  1. 1.沈阳化工大学 材料科学与工程学院,沈阳 110142;
    2.中国科学院 上海硅酸盐研究所,关键陶瓷材料全国重点实验室,上海 201899;
    3.中国科学院大学,北京 100049;
    4.中国人民解放军海军特色医学中心,上海 200433
  • 收稿日期:2025-06-23 修回日期:2025-09-04
  • 通讯作者: 孙静, 研究员. E-mail：jingsun@mail.sic.ac.cn;徐新宏, 助理研究员. E-mail：xxh2748@163.com
  • 作者简介:朱开煌 (2000-), 男, 硕士研究生. E-mail：ZHUkaihuang_11@outlook.com

Preparation of Graphene Oxide Modified UiO-66 Based Metal Organic Framework Gel and Efficient Toluene Adsorption Performance

ZHU Kaihuang1,2, YANG Shijie2,3, LI Xinge2,3, SONG Guanqing2,3, SHI Gansheng2, WANG Yan2, REN Xiaomeng4, LU Yao1, XU Xinhong4, SUN Jing2   

  1. 1. College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China;
    2. State Key Laboratory of High Performance Ceramics, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China;
    4. PLA Navy Medical Centre, Shanghai 200433, China
  • Received:2025-06-23 Revised:2025-09-04
  • Contact: SUN Jing, professor. E-mail：jingsun@mail.sic.ac.cn; XU Xinhong,assistant professor. E-mail：xxh2748@163.com
  • About author:ZHU Kaihuang (2000-), male, Master candidate. E-mail：ZHUkaihuang_11@outlook.com

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摘要： 挥发性有机化合物(VOCs),尤其是芳香烃类物质如甲苯,由于其高挥发性和生物毒性,严重威胁环境与人类健康。传统的金属有机框架(MOFs)材料多以微孔结构为主,但在吸附容量与分子传质之间存在矛盾,这促使研究者探索更优的材料体系。本研究以UiO66为主体,复合氧化石墨烯(GO)进行改性,构建了GO复合的金属有机框架凝胶(MOGs)。GO的π共轭结构增强了与甲苯分子的π-π相互作用,丰富的含氧官能团则促进了与金属节点的配位,形成更多Lewis酸性位点,协同增强了金属-π相互作用。实验结果显示,UG-1样品(GO与ZrCl4质量比为1 : 100)在动态穿透实验中的平衡吸附容量达77.4  mg/g,静态吸附实验中的饱和吸附容量高达1245.5  mg/g,优于UiO66 MOF和UiO66 MOG,表现出卓越的吸附性能。本工作揭示了GO改性对材料孔结构及主客体相互作用的多重调控机理,为设计高效可再生VOCs吸附剂提供了新的理论基础和实践支撑。

关键词: 氧化石墨烯, 金属有机框架, 挥发性有机化合物, 多级孔结构

Abstract: Volatile organic compounds (VOCs), particularly aromatic hydrocarbons such as toluene, pose significant threats to the environment and human health due to their high volatility and biological toxicity. Traditional Metal-organic frameworks (MOFs) are primarily microporous, and the trade-off between adsorption capacity and molecular transport efficiency has driven the development of more advanced material systems. In this work, graphene oxide (GO) doped metal-organic framework gels (MOGs) based on UiO-66 were developed, leveraging the synergistic modification effect of GO. The π-conjugated structure of GO enhanced π-π interactions with toluene molecules, while its abundant oxygen-containing functional groups facilitated competitive coordination with metal nodes, leading to the exposure of additional Lewis acid sites and thereby enhancing metal-π interactions. Experimental results demonstrated that UG-1 exhibited a breakthrough adsorption capacity of 77.4 mg/g in dynamic adsorption experiments and a saturated capacity of up to 1245.5 mg/g in static tests, outperforming both UiO66 MOF and MOG materials. This study elucidates the multiple regulatory mechanisms of GO incorporation in modulating pore structure and host-guest interactions, providing a new theoretical basis and practical guidance for designing efficient and recyclable VOC adsorbents.

Key words: graphene oxide, metal-organic frameworks, volatile organic compounds, hierarchical pore structure

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