نتایج جستجو برای: selective adsorption

تعداد نتایج: 251740  

Journal: :iranian journal of catalysis 2015
najme kalvari janaki razieh fazaeli hamid aliyan

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...

Journal: :Dalton transactions 2012
Lejie Zhang Yuan Jian Jian Wang Cheng He Xuezhao Li Tao Liu Chunying Duan

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.

Journal: :Chemical communications 2015
Yun-Wu Li Jian Xu Da-Cheng Li Jian-Min Dou Hui Yan Tong-Liang Hu Xian-He Bu

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.

Journal: :Chemical communications 2014
Nan Li Larissa Thia Xin Wang

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.

Journal: :Environmental science & technology 2005
M Wedyan M R Preston

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...

2004
Xuezhu Liu David Erickson Dongqing Li Ulrich J. Krull

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 ...

2017
Ravulapalli Sujitha Kunta Ravindhranath

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...

Journal: :Advanced Energy Materials 2021

The development of earth-abundant catalysts for selective electrochemical CO2 conversion is a central challenge. CuSn 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...

Journal: :Inorganic chemistry 2007
Shengqian Ma Xi-Sen Wang Erika S Manis Christopher D Collier Hong-Cai Zhou

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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