Abstract A new adsorbent, ethylene glycol bisthioglycolate modified gold nanoparticles grafted Mn doped Fe3O4 nanoparticles (EGBTG-Au@Mn-Fe3O4 NPs) were synthesized through chemical precipitation followed by an oxidative Mn doping process to use for extraction and preconcentration of trace amounts of Hg, and Cu ions in artificial and natural saliva. The prepared adsorbent was characterize...

   A magnetically recoverable adsorbent has been prepared by silica-coated magnetic nanoparticles through an amine functionality (ASMNPs). The ASMNPs were characterized by XRD, TEM, SEM, and FT-IR spectroscopy. It was used as an efficient and economical adsorbent for removing O, O-Diethyl O-[4-methyl-6-(propan-2-yl) pyrimidin-2-yl] phosphorothioate (diazinon) from...

the mesoporous molecular sieve mcm-41 was covalently grafted with 3-chloropropyl trimethoxylsilane and then was reacted with [cr(salpr)(h2o)]cl, (salpr = n,n'-bis(3-salicylidenaminopropyl)amine) to afford mcm-41 containing cr(salpr) moiety, cr(salpr)mcm-41. powder x-ray diffraction and nitrogen adsorption-desorption analyses revealed that not only the textural characteristics of the support wer...

in this study, amine functionalized kit-6 silica mesoporous magnetite nanocomposite (nh2-mmnc) was synthesized by chemical methods and used as an efficient and recoverable adsorbent for removal of ponceau 4r, as a toxic dye, from aqueous solutions. the synthesized nanocomposites were characterized by xrd, ft-ir, bet and sem instruments. the effect of various experimental parameters on the dye r...

This study presents the use of flow cytometry as a high-throughput quantifiable technique to study multicomponent adsorption interactions between proteins and surfaces. Flow cytometry offers the advantage of high-throughput analysis of multiple parameters on a very small sampling scale. This enables flow cytometry to distinguish between individual adsorbent particles and adsorbate components wi...

In this study, a novel solid dendrimer amine (hyperbranched polymers) was prepared using mesoporous carbon nitride functionalized by melamine based dendrimer amines. This adsorbent was denoted MDA-MCN-1. The process was stepwise synthesis and hard-templating method using mesoporous silica SBA-15 as a template. Cyanuric chloride and N,N-diisopropylethylamine (DIPEA, Merck) were used for function...

Silicate nanorods (attapulgite, ATT) were organically modified and homogeneously dispersed in a cyanate ester (CE) resin. ATT dispersions and networks were characterized by rheological and microscopic measurements. Amine groups grafted onto the particle surface catalyzed the cyclotrimerization of the CE monomers and enabled the CE monomers to enter the inter-rod spacing of loose aggregates easi...

A new sorbent has been developed by grafting Hexamethylenetetramine on a mesoporous molecular sieve (SBA-15) by wet impregnation method. This sorbent (Hexamine/SBA-15) has been characterized using N2 physisorption, X-ray diffraction (XRD) at low angles (2θ°) and FT-IR. To investigate the H2S removal capacity of this adsorbent from CH4-containing gas mixtures, the breakthrough tests have been pe...

Successful deployment of direct air capture (DAC) to mitigate the consequences climate change depends on many factors, one which is development kinetically efficient CO2 sorbents with a high sorption capacity, at ultralow concentrations. This work evaluated adsorption performance primary-, diamine-, and triamine-grafted SBA-15 pressures below 5 kPa for DAC applications, measured through volumet...

Modification of chitosan biopolymer was achieved by grafting (3-phenyl-1H-pyrazole-4-carbaldehyde) by the Schiff base reaction to synthesize a new chitosan derivative (ChD). The formation of the product was confirmed by FTIR, XRD and CNMR analysis. The grafted molecule provided additional nitrogen bearing groups as binding sites. The new derivative was used to investigate the removal of Cr (VI)...