Enhanced Hydrostability in Ni-Doped MOF-5
Enhanced Hydrostability in Ni-Doped MOF-5
复制标题
增强 Ni 掺杂 MOF-5 的水稳定性
DOI：
10.1021/ic3002898
复制
发表时间：
2012-09-03
影响因子：
4.6
通讯作者：
Cheng, Peng
中科院分区：
文献类型：
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作者：
Li, Huanhuan;Shi, Wei;Cheng, Peng
首次采用溶剂热晶化法合成了Ni掺杂的MOF-5，提高了其水稳定性。几种表征技术，包括X射线衍射（XRD）、热重分析（TGA）、扫描电子显微镜（SEM）、能量色散光谱仪（EDS）、电感耦合等离子体（ICP）、红外光谱（IR）、原子吸附、漫反射紫外-可见光谱和气体吸附测量，结果表明，Ni掺杂的MOF-5不仅比未掺杂的MOF-5表现出更大的朗缪尔I比表面积和更大的孔，而且显著增强骨架的耐水性。当暴露于环境空气时，未掺杂的MOF-5的H-2吸收能力迅速下降，而Ni掺杂的MOF-5的H-2吸附保持稳定4天。
Ni-doped MOF-5s were successfully synthesized for the first time via solvothermal crystallization process to enhance the hydrostability. Several characterization techniques, including X-ray diffraction (XRD), thermogravimetrical analysis (TGA), scanning electron microscopy (SEM), energy-dispersive spectroscopy instrument (EDS), inductively coupled plasma (ICP), infrared spectroscopy (IR), atomic sorption, diffuse-reflectance UV-vis spectroscopy, and gas sorption measurement, strongly support the effective incorporation of Ni(II) ions into the framework The results demonstrated that the Ni-doped MOF-5s not only exhibit larger Langmuir I specific surface areas and larger pores than the undoped MOF-5, but also significantly enhance water resistance of the framework The H-2 uptake capacity of undoped MOF-5 drops rapidly when exposed to the ambient air, whereas the H-2 adsorptions of the Ni- doped MOF-5s remain stable for 4 days.