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So, many Ag-NPs/clays nanocomposites have been developed ( Shameli et al. 2010;Zhang et al. 2013; Praus et al. 2010; Cabal et al. 2010;Huang and Yang 2008), and it was found that the nanoparticles ...
Ag/kaolin nanocomposite was prepared by reduction of Ag + ion with ethanol at alkaline condition on kaolin surface. Nanocomposite was characterized by FTIR, XRD, TEM, and BET methods. Results showed the Ag/kaolin composite has particle size 50 nm. The surface area was increased from kaolin to Ag/kaolin from 1.0215 to 7.409 m2 g−1, .
Feb 27, 2020· The increase of surface area and number of active sites due to the coating of Ag nanoparticles on activated carbon (AgNPs–TAC) led to the increase in phosphate adsorption .
Silica and montmorillonite-supported silica nanoparticles were prepared via an acid one step sol-gel process. The syn-thesized solids were characterized using XRD, FTIR, TEM and N. 2. adsorption. The effect of preparing temperatures on the structure and properties of the silica nanoparticles were studied. The results show that the increase of ...
May 26, 2016· Abstract. In this study, the adsorption of 5-nm silica nanoparticles onto montmorillonite and illite is investigated. The effect of surface functionalization was evaluated for four different surfaces: unmodified, surface-modified with anionic (sulfonate), cationic (quaternary ammonium (quat)), and nonionic (polyethylene glycol (PEG)) surfactant.
In this study, a natural zeolite clinoptilolite-type was impregnated through homogeneous and heterogeneous nucleation with silver nanoparticles. The synthesis of Ag nanoparticles was carried out by chemical reduction of silver nitrate (AgNO3) with sodium borohydride (NaBH4). In the case of homogeneous nucleation, colloidal solution of Ag nanoparticles at concentrations of 1, 2 and 4 parts .
Main content area. Effects of heteroaggregation with metal oxides and clays on tetracycline adsorption by graphene oxide
Structural andChemical Characterization ofMetals, AlloysandCompounds Selected peerreviewed papersfrom the International Materials ResearchCongress (IMRC2012), Symposium onStructural andChemical Characterization of Metals, Alloys andCompounds August12-17, 2012, Cancun, Mexico RamiroPerezCampos,AntonioContrerasCuevas andRodrigoA. EsparzaMuhoz .
Dec 04, 2013· Zhou et al. studied the stability of montmorillonite particles in the presence of Ag and TiO 2 nanoparticles. Their study suggests that the stability of a binary clay-nanoparticle system is dependent on the non-uniform distribution of the surface charge of clay platelets and additional surface contact interactions between clay particles and ...
Abstract: The silver nanoparticles supported on aluminum pillared Clay (Ag/Al-B), with Ag content of about 1%, were used for the free catalyzed oxidation of cyclohexene with hydrogen peroxide (H2O2). The structure of the material was subsequently studied by IR, BET, and X-ray diffraction analysis. The silver supported on aluminium pillared clay ...
PubMed:Adsorption effect on the degradation of carbaryl, mecoprop, and paraquat by anodic fenton treatment in an SWy-2 montmorillonite clay slurry. PubMed: Environmentally friendly formulations of alachlor and atrazine: preparation, characterization, and reduced leaching.
Jan 18, 2016· Perovskite LaFeO3/montmorillonite nanocomposites (LaFeO3/MMT) have been successfully prepared via assembling LaFeO3 nanoparticles on the surface of montmorillonite with citric acid assisted sol ...
Feb 28, 2018· Sorption of heavy metals plays a vital role in controlling environmental pollution. Here, we reviewed the sorption of heavy metals such as Ni, Co, Cu, Zn, V, Pb, Hg, In, As, Cd, Cr, Ga, Cs, Mn, V, Eu, Mo, Th, TI and Cr on metal oxides and clay minerals. The mechanism of association between these ions and the host minerals, and the factors controlling their sorption are discussed in detail.
The results indicated intercalation of Ag and Ag 2 CO 3 nanoparticles into the montmorillonite clay layers. The diffuse reflectance spectra exhibited a strong surface plasmon resonance (SPR) adsorption peak in the visible region, resulting from Ag nanoparticles.
montmorillonite nanoparticles milling CGM Grinding Plant Further investigation that the ball mill treatment, during nanopowder preparation in a new Water Jet Mill, For more montmorillonite nanoparticles milling Preparing Nanocomposites with a Three Roll Mill,, such as three roll mills and planetary ball mills, Nanocomposites with a Three .
nanoparticles, biopolymer and clay minerals. In the present study the efficiency of nanobiocomposite composed of bimetallic Zn-Ag nanoparticles, montmorillonite, chitosan, gum ghatti and poly lactic acid were evaluated with respective to achievable MCP adsorption from aqueous environment.
Nanocrystalline ZnO particles have been prepared with different methods using zinc cyclohexanebutyrate as precursor in dimethyl sulfoxide (DMSO) medium via alkaline hydrolysis. A series of preparations were carried out in the presence of layered silicates (kaolinite and montmorillonite). It was revealed by different measurement techniques that the presence of the clay .
Montmorillonite-cysteine could be used as the immobilizer, detector, and detoxifier of heavy metals. To further the understanding and the application, the interaction between the montmorillonite and cysteine and the adsorption of cysteine on montmorillonite and .
Mar 13, 2018· A green synthesis of composite based on silver nanoparticles (AgNPs) obtained by Melissa officinalis (MO) extract and supported on diatomaceous earth (DE) was synthesized. Kinetic adsorption models were proposed to describe the sorption mechanism of AgNPs nanoparticles during the impregnation process. Theoretical models as pseudo first order, .
Ag Nanoparticles Adsorption on Diatom-Montmorillonite Clays ... In this work, a spectroscopic and structural characterization of diatomaceous earth-montmorillonite clays after impregnated with ...
In this work, the removal of Ag nanoparticles (AgNPs) using aqueous sodium montmorillonite nanoclay in the presence of a cationic surfactant stabiliser was investigated. The effects of experimental parameters on the adsorption process, such as pH, surfactant concentration, adsorbent dosage, initial AgNPs concentration and contact time, were ...
This work was a study of the chemical modification of diatomaceous earth (DE) using hydrofluoric acid (HF) solution. Under the experimental conditions investigated, it was found that HF under controlled conditions significantly etched inward into the interior of the existing pore structure in the clay mineral due to its high content of silica, leaving a framework possessing a larger BET ...
The adsorption capacities of bentonite and montmorillonite nanoparticles at pH = 3 are 4.45 and 3.85 mg/g, respectively. As both of these adsorbents have positive charge in acidic pH and the fluoride anion has negative charge, the removal process increases markedly in acidic pH.
In this work, a spectroscopic and structural characterization of diatomaceous earth-montmorillonite clays after impregnated with silver nanoparticles were carried out. The silver nanoparticles were synthesized by chemical reduction with sodium borohydride starting from silver nitrate solution. The obtained nanoparticles were stabilized with polyvinyl-pyrrolidone as a surface agent.
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