• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Defective Metal–Organic Frameworks Incorporating Iridium-Based Metalloligands: Sorption and Dye Degradation Properties
【24h】

Defective Metal–Organic Frameworks Incorporating Iridium-Based Metalloligands: Sorption and Dye Degradation Properties

机译：包含基于铱的金属糖的金属有机框架：吸附和染料降解性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Artificial control and engineering of metal–organic framework (MOF) crystals with defects can endow them with suitable properties for applications in gas storage, separation, and catalysis. A series of defective iridium-containing MOFs, [Zn_4(μ_4-O)(Ir-A)_(2(1-x))(Ir-B)_(2x)] (ZnIr-MOF-d_x), were synthesized by doping heterostructured linker Ir-BH_3 into the parent [Zn_4(μ_4-O)(Ir-A)_2] (ZnIr-MOF), in which Ir-AH_3 represents [Ir(ppy-COOH)_3] (ppyCOOH=3-(pyridin-2-yl)benzoic acid) and Ir-BH_3 is [Ir(ppy-COOH)_2(2-pyPO_3H)] (2-pyPO_3H_2=2- pyridylphosphonic acid). Samples with different degrees of defects were characterized by SEM, IR and NMR spectroscopy, powder XRD measurements, and thermal and elemental analyses. ZnIr-MOF-d_(0.3) was selected as a representative for gas (N_2, CO_2) or vapor (H_2O, alcohol) sorption studies. The results demonstrate that defective ZnIr-MOF-d_(0.3) possesses multiple pore size distributions, ranging from micro- to mesopores, unlike the parent material, which shows a uniform micropore distribution. The hydrophilicity of the interior surface is also increased after defect engineering. As a result, ZnIr-MOF-d_(0.3) shows an enhanced adsorption capability toward n-butanol, relative to that of the parent compound. Optical studies reveal that both ZnIr-MOF and ZnIr-MOF-d_(0.3) have low band gaps (2.35 and 2.40 eV), corresponding to semiconductors. ZnIr-MOF-d_(0.3) exhibits dramatically increased photocatalytic efficiency for dye degradation.
机译：具有缺陷的金属有机骨架（MOF）晶体的人工控制和工程可以为它们的储气，分离和催化作用具有合适的性能。合成了一系列含有含有含铱的铱，[Zn_4（μ_4-O）（IR-A）（2（1-X））（IR-B）_（2x）]（Znir-Mof-d_x），是合成的通过将异质结构连接物IR-BH_3掺杂到母体[Zn_4（μ_4-O）（IR-A）_2]（Znir-Mof）中，其中IR-AH_3表示[IR（PPY-COOH）_3]（PPYCOOH = 3- （吡啶-2-基）苯甲酸）和IR-BH_3是[IR（PPY-COOH）_2（2-PYPO_3H）]（2-PYPO_3H_2 = 2-吡啶基膦酸）。通过SEM，IR和NMR光谱，粉末XRD测量和热和元素分析，表征具有不同缺陷程度的样品。选择Znir-Mof-D_（0.3）作为气体（N_2，CO_2）或蒸气（H_2O，醇）吸附研究的代表性。结果表明，与母体材料不同，血清-MOF-D_（0.3）具有多种孔径分布，其具有显示均匀微孔分布的微量至中孔。在缺陷工程后，内表面的亲水性也增加。结果，Znir-mof-d_（0.3）显示相对于母体化合物的氨丁醇的增强的吸附能力。光学研究表明，Znir-Mof和Znir-Mof-d_（0.3）都具有低频带间隙（2.35和2.40eV），对应于半导体。 Znir-Mof-d_（0.3）显着增加了染料降解的光催化效率。

著录项

  • 来源
    《Chemistry: A European journal》 |2017年第27期|共10页
  • 作者

    Kun Fan; Wei-Xuan Nie; Lu-Ping Wang; Chwen-Haw Liao; Song-Song Bao; Li-Min Zheng;

  • 作者单位

    State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 (P.R. China);

    State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 (P.R. China);

    State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 (P.R. China);

    State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 (P.R. China);

    State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 (P.R. China);

    State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 (P.R. China);

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    adsorption; defect engineering; dyes/pigments; iridium; metal–organic frameworks;

    机译：吸附;缺陷工程;染料/颜料;铱;金属 - 有机框架;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号