含硫多孔芳香框架材料的制备及超灵敏检测同步去除汞的双重性能
Preparation of Sulfur-containing Porous Aromatic Framework Materials and Their Dual Performance in Ultra-sensitive Detection and Simultaneous Removal of Mercury
刘星雨 1张晓晶 1向婷婷 1陈士欣 1马硕 1邵慧敏 2崔博 2夏春龙 3李岩 1布乃顺 1李丛3
作者信息
- 1. 辽宁大学环境学院,沈阳 110036
- 2. 辽宁大学化学院,沈阳 110036
- 3. 抚顺水文局,抚顺 113000
- 折叠
摘要
Hg/Hg(Ⅱ)被认为是对人体毒性较大的重金属,制备能超灵敏检测同步高效去除有毒Hg2+的新材料对治理汞污染有重要作用.本文通过Suzuki偶联反应合成了一种含硫多孔芳香框架材料(LNU-19),共轭结构和灵活的噻吩连接片段显著增强了其发光能力,该材料具有良好的孔隙率、比表面积及高亲和力螯合位点(噻吩基团),可实现对Hg2+的双重功能应用.LNU-19具有灵敏度高、选择性好、可视性好及实时响应等优良的传感性能,同时对Hg2+的吸附容量为121.3 mg/g.通过引入噻吩位点和调控骨架结构,为优化提升多孔芳香框架制备策略提供了新途径.
Abstract
Hg/Hg(Ⅱ)is considered to be a highly toxic heavy metal to humans,and the preparation of new materials that can detect and remove toxic Hg2+simultaneously and efficiently is an important support for the control of mercury pollution.In this study,a sulfur-containing porous aromatic framework material(named LNU-19)was synthesized by Suzuki coupling reaction,and its conjugated structure and flexible thiophene-linked fragment significantly enhanced its luminescence ability,and the material had good porosity,specific surface area and high affinity chelating site(thiophene group),realizing the dual functional application of LNU-19 to Hg2+.LNU-19 has excellent sensing performance such as high sensitivity,good selectivity,good visibility and real-time response,and has an adsorption capacity of 121.3 mg/g for Hg2+.In this study,the introduction of thiophene sites and the regulation of the skeleton structure provided a new way to optimize and improve the preparation strategy of porous aromatic frameworks.
关键词
Suzuki偶联/多孔芳香框架/荧光检测/汞吸附Key words
Suzuki conjugation/Porous aromatic framework/Fluorescence detection/Mercury adsorption引用本文复制引用
基金项目
国家自然科学基金(31972522)
辽宁省自然科学基金(2021-MS-149)
"兴辽英才计划"青年拔尖人才项目(XLYC2007032)
抚顺水文局课题()
辽宁润中供水有限责任公司课题()
辽宁大学大学生创新创业训练计划项目()
出版年
2024
国家科技期刊平台
NSTL
万方数据