期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 297, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2021.122034
关键词
Metal-organic frameworks; Zeolitic imidazolate frameworks; Hierarchical porous materials; Hydrogen
资金
- Science and Technology Development Fund (STDF) [35969]
Hydrogen has gained attention as an environmentally friendly alternative energy source, with cobalt embedded zeolitic imidazolate frameworks (Co@ZIF-8) showing high catalytic activity and a hierarchical porous structure for chemical synthesis and hydrogen generation applications.
In the last decades were witnesses that hydrogen is in the limelight as an environmentally benign and alternative energy source to fossil fuels. The hydrolysis of sodium borohydride (NaBH4) is promising for the synthesis of materials/chemical compounds and on-demand hydrogen generation-based applications. Herein, cobalt embedded zeolitic imidazolate frameworks (Co@ZIF-8) were synthesized at ambient temperature via a one-pot method (within 60 min). X-ray diffraction (XRD) pattern ensures the successful synthesis of a pure phase of Co@ZIF-8 crystals. Transmission electron microscope (TEM) and nitrogen (N-2) adsorption-desorption isotherm reveal that Co@ZIF-8 has a hierarchical porous structure. Co@ZIF-8 exhibited high catalytic activity for the hydrolysis of NaBH4 with a hydrogen generation rate (HGR) of 7230 mL.g(cat)(-1).min(-1) (18 x 10(6) mL.g(Co)(-1).min(-1)). The high catalytic performance and the simple synthesis procedure of Co@ZIF-8 endow the material's high potential to be a catalyst for hydrogen generation via the hydrolysis of hydrides such as NaBH4.
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