Nickel-Platinum Nanoparticles Supported on Zeolitic Imidazolate Framework/Graphene Oxide as High-Performance Adsorbents for Ambient-Temperature Hydrogen Storage

作者：Zhang, Jian; Ji, Dong; Zhou, Hu^*; Yan, Xiufen; Yuan, Aihua^*

来源：Journal of Nanoscience and Nanotechnology, 2017, 17(2): 1400-1406.

DOI：10.1166/jnn.2017.12685

• Metal-Organic Framework
• Graphene Oxide
• Nickel
• Platinum
• Hydrogen Storage
• Spillover

A facile liquid impregnation method followed by a reduction treatment was applied for loading transition metals nickel, nickel-platinum, and platinum into zeolitic imidazolate framework (ZIF-8)/graphene oxide (GO) as potential adsorbents for ambient-temperature hydrogen storage. These materials have been characterized by powder X-ray diffraction, infrared spectra, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, inductively coupled plasma-emission spectroscopy, and gas adsorption apparatus for their physical and chemical properties. The metal-doped ZIF-8/GO composites maintained the morphology of pristine ZIF-8, although their specific surface areas significantly decreased. The metal nanoparticles in the corresponding composites have average diameters of 4.2-5.1 nm, and uniformly located on the external surface and edges of ZIF-8/GO network. Hydrogen adsorption amounts on metal-doped samples were enhanced by factors of 2.3-3.8 times over ZIF-8 at 298 K due to the spillover effect. Notably, the Pt-doped ZIF-8/GO sample seems to be the best adsorbent for hydrogen storage because of the higher catalytic reactivity of platinum than nickel.

• 出版日期2017-2
• 单位江苏科技大学