Abstract
In this manuscript, we have developed an efficient spraying method to successfully fabricate a series of flower-like coordination polymers (CP) microparticles, including Co/BDC (1,4-benzenedicarboxylate) metal organic frameworks (MOF) and infinite coordination polymers (ICP) microparticles, as well as Ni-Co/BDC MOF and Zn/DOBDC (2,5-dioxido-1,4-benzenedicarboxylate) MOF. The spraying method has shown high efficiency and universality in synthesizing the flower-like CP. The crystalline structure can be adjusted by varying the solvent composition in the spraying process. SEM observation demonstrated the MOF and ICP microparticles possess the similar flower-like structure, which is composed of nanoflakes with smooth surface, and the flower-like microparticles could be monodisperse with as low as 5% polydispersity. Moreover, the fabrication of the flower-like CP microparticles by spraying has a wide operation window, because there is no need to precisely control the experiment conditions, like solvents, concentration, and spray order. Due to the practicality of spray technique, this work would pave the way for the manufacture of the flower-like materials and have great potential in applications of catalysis, sensor, energy storage, and so on.
Highlights
Coordination polymers (CP) are a class of organic-inorganic hybrid materials, which are based on metal ions linked by polydentate organic ligands [1–4]
infinite coordination polymers (ICP) have the advantage over metal-organic frameworks (MOF) in terms of synthesis
The Co/BDC CP microparticles were fabricated by spraying cobalt acetate tetrahydrate solutions onto H2BDC solutions with the ultraphonic spray nozzle and system at room temperature.In the synthetic procedure of Co/BDC MOF microparticles, Co(CH3COO)2·4H2O, and H2BDC were respectively dissolved in a mixed solvent, which formed a ternary mixture of DMF/ethanol/water (V:V:V = 16:1:1), and the optimal concentrations of cobalt acetate tetrahydrate and H2BDC are both 0.021 mol·L−1
Summary
Coordination polymers (CP) are a class of organic-inorganic hybrid materials, which are based on metal ions linked by polydentate organic ligands [1–4]. The CP family involves two important members: metal-organic frameworks (MOF) and infinite coordination polymers (ICP). MOF which possess inherent porosities, high surface, and uniform channels have emerged as an intriguing class of porous materials with a high potential for applications in separation, storage, and catalysis [7–10]. The synthesis of ICP is simpler, which presents ICP as having more customization in their structure, composition, and morphology. Nasanhomaavtienriagls m20o17r,e7,c2u37stomization in their structure, composition, and morphology. This makes[2] oICf 1P2 attractive for many applications where conventional MOF are not suitable or ideal given their static morphology, such as biologically-relevant imaging, labelling, drug delivery, and so on [6].
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