نتایج جستجو برای: selective adsorption
تعداد نتایج: 251740 فیلتر نتایج به سال:
a series of fe3o4 supported on mesoporous fdu-12 silica systems were prepared by the hydrothermal conditions. the surface properties of the functionalized catalyst were analyzed by a series of characterization techniques like ftir, xrd, n2 adsorption–desorption and tem. xrd and adsorption–desorption analysis shows that the mesostructure of fdu silica remains intact after fe3o4 modifications, wh...
A new approach inspired by fluorescent labeling technology to fluorescently functionalize MOFs via post-modification is reported. A fluorescein-containing MOF FITC@BTPY-NH(2) was synthesized for selective sensing and adsorption of Ag(+) in aqueous solution.
Two microporous MOFs have been constructed from different metal cluster SBUs. Both of them exhibit highly selective CO2 adsorption capacity over CH4 and N2 owing to their abundant active sites.
A specific bifunctional molecule containing amidine is prepared to construct a CO2-responsive surface via molecular self-assembly. The smart surface undergoes CO2-responsive switching of surface charges and wettability, leading to distinctively selective adsorption of hydrophobic/hydrophilic molecules.
We present evidence that under circumstances of low pH and organic-free surfaces an ordinary estuarine sediment can exhibit strong optical isomer selectivity in its absorption of a number of amino acids. This selectivity can also be seen to a lesser degree in the minerals quartz, montmorillonite, and kaolin. Adsorption reactions were performed with racemic amino acid mixtures, and after equilib...
A difficulty with the design and operation of an electrokinetically operated DNA hybridization microfluidic chip is the opposite direction of the electroosmotic flow and electrophoretic mobility of the oligonucleotides. This makes it difficult to simultaneously deliver targets and an appropriate hybridization buffer simultaneously to the probe sites. In this work we investigate the possibility ...
An adsorbent prepared by entrapping active carbon derived from the stems of Achyranthes aspera plant in the calcium alginate beads (CABAA) has been investigated for its adsorption nature towards the removal of phosphate by varying various physicochemical parameters. Surface morphological studies are made using FTIR, XRD, FESEM, and EDX. The sorption mechanism is analyzed using Freundlich, Langm...
The development of earth-abundant catalysts for selective electrochemical CO2 conversion is a central challenge. CuSn bimetallic can yield reduction toward either CO or formate. This study presents oxide-derived tunable product and seeks to understand the synergetic effects between Cu Sn causing these selectivity trends. materials undergo significant transformations under conditions, their dyn...
An interpenetrating microporous metal-organic framework based on a mu3-oxotrinickel basic carboxylate secondary building unit has been synthesized and structurally characterized. It exhibits pronounced gas-sorption hysteresis and selective adsorption of carbon dioxide over methane.
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