Journal
RSC ADVANCES
Volume 5, Issue 35, Pages 27901-27911Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra03986j
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Funding
- National Natural Science Foundation of China [21306217]
- Strategic Priority Research Program-Climate Change: Carbon Budget and Related Issues of the Chinese Academy of Sciences [XDA05010109, 05010110]
- Instrument Developing Project of the Chinese Academy of Sciences [YZ201139]
- Chinese Academy of Sciences the strategic pilot science and technology projects-carbon dioxide capture, use and storage key technology and engineering demonstration [XDA070401]
- Key Science and Technology Program of Shanxi Province, China [MD2014-09]
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Two type of modulators, including sodium acetate and triethylamine were used to synthesize nanosized HKUST-1 crystals with tailored size and morphology using a coordination modulation method. The results of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and N-2 sorption isotherms confirm that the size of the HKUST-1 crystals can be tuned from the micron scale to the nanoscale through precise modulation of the amounts of the modulators. Moreover, hierarchical porous structures are obtained with the addition of modulators. It is suggested that a moderate acid-base environment and capping groups play an important role in controlling the size and morphology of HKUST-1. Dynamic CO2 breakthrough experiments illustrate that the CO2 capacity of nanosized HKUST-1 crystals is superior to that of micron-sized HKUST-1 crystals under low CO2 partial pressure conditions (0.1 bar). Besides, the CO2 adsorption capacity of nanosized HKUST-1 crystals was maintained after ten adsorption/desorption cycles.
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