Enhanced hydrostability in Ni-doped MOF-5.
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 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.
Department of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE), and TKL of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin 300071, PR China.
Huanhuan
H
Li
Wei
W
Shi
Kaina
K
Zhao
Han
H
Li
Yanmin
Y
Bing
Peng
P
Cheng