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ARTICLE . Study of silver adsorption on montmorillonite . Petr Praus I, *; Martina Turicová I; Marta Valásková II. I Department of Analytical Chemistry and Material Testing, VSBTechnical University of Ostrava 17. listopadu 15, 708 33 OstravaPoruba, Czech Republic II Nanotechnology Centre, VSBTechnical University of Ostrava, 17. listopadu 15, 708 33 .
Abstract: The silver nanoparticles supported on aluminum pillared Clay (Ag/AlB), 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 Xray diffraction analysis. The silver supported on aluminium pillared clay ...
nanoparticles, biopolymer and clay minerals. In the present study the efficiency of nanobiocomposite composed of bimetallic ZnAg nanoparticles, montmorillonite, chitosan, gum ghatti and poly lactic acid were evaluated with respective to achievable MCP adsorption from aqueous environment.
So, many AgNPs/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 ...
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, .
This study reports the carbon dioxide (CO 2 ) adsorption on montmorillonite (NaMt) incorporating Cu 0, Fe 0, Pd 0 and Ag 0 as metallic nanoparticles (MNPs). The changes in structural, textural, morphological and adsorption properties of the resulting materials (NaMtMNPs) were investigated.
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 .
In this study, a natural zeolite clinoptilolitetype 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 .
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 ...
Silica and montmorillonitesupported silica nanoparticles were prepared via an acid one step solgel process. The synthesized 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 ...
Apr 29, 2003· Silver nanoparticles were synthesized in the interlamellar space of alayered kaolinite clay m ineral. Disaggregation of the lamellae of nonswelling kaolinite was achieved by intercalation of dimethylsulfoxide. The Ag + ions after adsorption in the interlamellar space were reduced by NaBH4 or by UV irradation. The changing of the structure of kaolinite and the intercalation of silver ...
(±1) nm, respectively for clay and Ag/SnO2/clay nanocomposites mode powder. As shown in Fig. 2 the original dspacing of clay, Ǻ and Ǻ of Ag/SnO2/clay nanocomposites 2θ angles (2θ = ° and Ǻ respectivelly). This value is a direct proof of .
Montmorillonitecysteine 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 .
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 claynanoparticle system is dependent on the nonuniform distribution of the surface charge of clay platelets and additional surface contact interactions between clay particles and ...
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 minerals has a ...
In this work, a spectroscopic and structural characterization of diatomaceous earthmontmorillonite 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 polyvinylpyrrolidone as a surface agent.
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 .
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.
Ag Nanoparticles Adsorption on DiatomMontmorillonite Clays ... In this work, a spectroscopic and structural characterization of diatomaceous earthmontmorillonite 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 ...
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.
PubMed:Adsorption effect on the degradation of carbaryl, mecoprop, and paraquat by anodic fenton treatment in an SWy2 montmorillonite clay slurry. PubMed: Environmentally friendly formulations of alachlor and atrazine: preparation, characterization, and reduced leaching.
The adsorption capacity of starch/NaMMT nanocomposites (10:1, 5:1 and 10:3) was calculated through the equilibrium data from batch adsorption experiments at three pH values (3, and 6) in nickel and cobalt solutions. The adsorption curve of Ni (II) and Co (II) ions is presented in Appendix section (see Figures A1 and A2). These curves ...
Main content area. Effects of heteroaggregation with metal oxides and clays on tetracycline adsorption by graphene oxide
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