| 羟基修饰MOFs的合成、表征和光催化机理 |
| Synthesis, Characterization and Photocatalytic Mechanism of Hydroxyl Modified MOFs |
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| 摘要: 合成了具有大的比表面积和结构容易修饰的金属有机框架材料（MOFs）光催化剂：MIL-101（Cr）和MIL-101（Cr）-2OH。利用红外、X射线粉末衍射、X射线光电子能谱等仪器对MIL-101（Cr）和MIL-101（Cr）-2OH光催化剂的结构进行表征分析。通过紫外-可见光漫反射光谱、ζ电位、电喷雾电离质谱系统地分析研究MOFs中不参与配位的给电子基团对光催化降解亚甲基蓝性能的影响。研究发现MIL-101（Cr）-2OH中桥联配体2，5-二羟基对苯二甲酸上不参与配位的2个羟基，可以通过配体-金属的电荷转移作用影响光的吸收，从而调控光催化降解速率 |
| 关键词: MOFs 光催化剂 机理 设计合成 污染物 |
| 基金项目: 广西科技基地和人才专项（No.AD19245031）、广西自然科学基金（No.2019GXNSFBA245063）和梧州学院开放实验室创新性实验（No.2019005）资助项目。 |
| Abstract: In this work, metal organic framework materials (MOFs) photocatalysts with large specific surface area and easy structure modification are synthesized:MIL-101(Cr) and MIL-101(Cr)-2OH. The structures of MIL-101(Cr) and MIL-101(Cr)-2OH photocatalysts were characterized by FT-IR, X-ray powder diffraction (PXRD), and X-ray photoelectron spectroscopy (XPS). The UV-visible diffuse reflectance spectroscopy (UV-Vis DRS), ζ potential, and electrospray ionization mass spectrometry (ESI-MS) were used to systematically analyze the effect of electron donating groups in the MOFs on photocatalytic degradation of methylene blue (MB). It was found that the two hydroxyl groups that do not participate in MIL-101(Cr)-2OH can affect the absorption of light through the action of ligandmetal charge transfer (LMCT), thereby regulating the photocatalytic degradation rate. |
| Keywords: MOFs photocatalysis mechanism synthesis design pollution |
| 投稿时间：2020-02-02 修订日期：2020-03-23 |
| 摘要点击次数: 2008 |
| 全文下载次数: 676 |
| 李石雄,黄凤兰,莫巧玲,廖蓓玲.羟基修饰MOFs的合成、表征和光催化机理[J].无机化学学报,2020,36(7):1401-1412. |
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