DOI: 10.1016/j.jcou.2018.02.004
Scopus记录号: 2-s2.0-85042225939
论文题名: Supercritical CO2 utilization for the crystallization of 2D metal-organic frameworks using tert-butylpyridine additive
作者: Portolés-Gil N. ; Gowing S. ; Vallcorba O. ; Domingo C. ; López-Periago A.M. ; Ayllón J.A.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 24 起始页码: 444
结束页码: 453
语种: 英语
英文关键词: Metal-organic frameworks
; Supercritical CO2
; Surface grafting
; Tert-butylpyridine additive
Scopus关键词: Carbon dioxide
; Chemical reactions
; Crystalline materials
; Grafting (chemical)
; Ligands
; Metals
; Organometallics
; Solubility
; Transition metals
; Metal organic framework
; Metalorganic frameworks (MOFs)
; Pyridine derivatives
; Short reaction time
; Supercritical CO2
; Supercritical CO2 (scCO2)
; Supercritical condition
; Surface grafting
; Copper
英文摘要: Recently, the study of the synthesis of metal-organic frameworks (MOFs) in the presence of supercritical CO2 (scCO2) has become a burgeoning direction in materials science. MOFs crystallization in scCO2 is often carried out in the presence of other solvents, such as ionic or organic liquids, to increase reagents solubility in the reaction media. In this work, a totally new and cleaner way is followed, utilizing small amounts of an ancillary ligand to increase metal solubility, which result in a more efficient use of scCO2. The precipitation of 2D MOFs, based in the combination of different trifluoroacetates of transition metals (M(tfa)2, MII = CuII or ZnII), and a bidentate pyridine derivative (dpy), was studied. MOFs of the type [M(tfa)2(dpy)x]∝ were precipitated using scCO2 as the solvent medium and the ligand tert-butylpyridine (t-bpy) as additive. The targeted 2D MOFs were precipitated after a short reaction time (ca. 3 h) operating under relatively soft supercritical conditions (20 MPa and 333 K). This new synthetic approach is thought as a generic method that can be used to modify metal precursors in systems in which the reaction is too slow or incomplete in neat scCO2. Moreover, the increase of metal centre solubility allowed the in situ deposition of MOF crystals grafted on modified substrates. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111947
Appears in Collections: 气候减缓与适应
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作者单位: Instituto de Ciencia de Materiales de Barcelona (CSIC), Campus UAB, Bellaterra, 08193, Spain; ALBA Synchrotron Light Source, Cerdanyola del Vallés, Barcelona, Spain; Universidad Autónoma de Barcelona, Campus UAB, Bellaterra, Spain
Recommended Citation:
Portolés-Gil N.,Gowing S.,Vallcorba O.,et al. Supercritical CO2 utilization for the crystallization of 2D metal-organic frameworks using tert-butylpyridine additive[J]. Journal of CO2 Utilization,2018-01-01,24