108279 20211115135503.0 doi 10.1039/d0nj04402d sideral 121614 ART-2020-121614 eng Madhav, D. Synthesis of nanoparticles of zeolitic imidazolate framework ZIF-94 using inorganic deprotonators 2020 A novel synthesis process of ZIF-94 (also known as SIM-1) is developed for particle size tuning, using either NaOH or NH4OH as a deprotonator. ZIF-94 originate from MOFs and have several advantages over traditional porous materials, in terms of their chemistry, structure and applications as catalysts, adsorbents, biocides and membrane materials. The existing synthesis process for ZIF-94 at a scale-up level produces particles of approximately 250 nm in size; an even smaller size is expected to result in an even better gas separation performance and catalytic activity. In this study, it was found that NaOH results in ZIF-94 particles with well-defined crystal structures, while in the case of NH4OH, the particles agglomerate to produce random shaped bigger particles. The optimum base to metal ratio was found to be 2 : 1 (NaOH : Zn), which shows a compromise between the particle size (114 +/- 3 nm) and BET specific surface area (254 +/- 4 m(2) g(-1)). Furthermore, the synthesized nanoparticles underwent thorough characterization by XRD, TGA, N-2 adsorption and electron microscopy revealing the lowest SEM average particle size of 84 +/- 3 nm. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA-FSE/T43-17R info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/MAT2016-77290-R info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 3.591 2020 CHEMISTRY, MULTIDISCIPLINARY 75 / 178 = 0.421 2020 Q2 T2 0.692 2020 Catalysis 2020 Q1 Materials Chemistry 2020 Q1 Chemistry (miscellaneous) 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Malankowska, M. Universidad de Zaragoza (orcid)0000-0001-9595-0831 Coronas, J. Universidad de Zaragoza (orcid)0000-0003-1512-4500 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 44, 46 (2020), 20449-20457 New j. chem. NEW JOURNAL OF CHEMISTRY 1144-0546 1390295 http://zaguan.unizar.es/record/108279/files/texto_completo.pdf Postprint 1120193 http://zaguan.unizar.es/record/108279/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:108279 articulos driver 2021-11-15-08:52:02 ARTICLE