The Pesticide 3-(3,4-Dichlorophenyl)-1,1-dimethylurea (Diuron) Immobilized on Silica Gel Surface

Prado, Alexandre G.S.; Airoldi, Cláudio

doi:10.1006/jcis.2000.7401

Cited by 83 publications

(45 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In order to prepare immidazol modified magnetite nanoparticles (imSCMNPs), 5.0 g silica coated magnetite nanoparticles was added to 50 ml of dry toluene and 5.0 g imidazole. Then a few drops of triethylamine were then added to favor the reaction equilibrium [31]. Triethylamine was used as disprotonant agent to increase the efficiency of the reaction.…”

Section: Loading Of Imidazole Onto Silica Coated Nanomagnetite With Imentioning

confidence: 99%

Application of Modified Silica Coated Magnetite Nanoparticles for Removal of Iodine from Water Samples

et al. 2012

View full text Add to dashboard Cite

Abstract:The adsorption of iodine onto silica coated magnetite nanoparticles (im-SCMNPs) that modified with imidazole was investigated for removal of high concentrations of iodine from wastewater. Modified silica magnetite nanoparticles showed high efficiency in removing iodine from wastewater samples. The optimum pH for iodine removal was 7.0-8.0. The adsorption capacity was evaluated using both the Langmuir and Freundlich adsorption isotherm models. The size of the produced magnetite nanoparticles was determined by X-ray diffraction analysis and scanning electron microscopy. Synthesized magnetite nanoparticles showed the high adsorption capacity and would be a good method to increase adsorption efficiency for the removal of iodine in a wastewater treatment process. The Langmuir adsorption capacity (qmax) was found to be 140.84 mg/g of the adsorbent.

show abstract

Section: Loading Of Imidazole Onto Silica Coated Nanomagnetite With Imentioning

confidence: 99%

Application of Modified Silica Coated Magnetite Nanoparticles for Removal of Iodine from Water Samples

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Silica gel is the most used inorganic support for that purpose because it is an abundant and inexpensive material, with good adsorbent proprieties due to its large surface areas (7). The presence of silanol groups distributed on the surface (8) increases the reactivity, due to an acidity behavior known as Brönsted acid (8)(9)(10), enabling easily the enhancement of active centers (11)(12)(13).…”

Section: Introductionmentioning

confidence: 99%

Chemisorption and Thermodynamic Data of the Interaction between a Chelate Free Acidic Center with Basic Groups Attached to Grafted Silicas

Arakaki

Sousa

Espı́nola

et al. 2002

Journal of Colloid and Interface Science

Self Cite

View full text Add to dashboard Cite

“…This same behavior was previously observed for the other anchored processes. [24,29] The infrared spectra shown in figure 1 confirm the presence of 2-aminothiazole groups bound to the silica surface. The absorption band observed at 2784 cm -1 is due to the C-H stretching of aromatic olefins.…”

Section: Characterization Of the Materialsmentioning

confidence: 89%

Determination of Copper, Iron, Nickel and Zinc in fuel kerosene by FAAS after adsorption and pre-concentration on 2-aminothiazole-modified silica gel

et al. 2004

View full text Add to dashboard Cite

Silica gel chemically modified with 2-Aminotiazole groups, abbreviated as SiAT, was used for preconcentration of copper, zinc, nickel and iron from kerosene, normally used as a engine fuel for airplanes. Surface characteristics and surface area of the silica gel were obtained before and after chemical modification using FT-IR, Kjeldhal and surface area analysis (B.E.T.). The retention and recovery of the analyte elements were studied by applying batch and column techniques. The experimental parameters, such as shaking time in batch technique, flow rate and concentration of the eluent (HCl-0.25-2.00 mol L -1 ) and the amount of silica, on retention and elution, have been investigated. Detection limits of the method for copper, iron, nickel and zinc are 0.77, 2.92, 1.73 and 0.097 mg L -1 , respectively. The sorption-desorption of the studied metal ions made possible the development of a preconcentration method for metal ions at trace level in kerosene using flame AAS for their quantification.

show abstract

The Pesticide 3-(3,4-Dichlorophenyl)-1,1-dimethylurea (Diuron) Immobilized on Silica Gel Surface

Cited by 83 publications

References 26 publications

Application of Modified Silica Coated Magnetite Nanoparticles for Removal of Iodine from Water Samples

Application of Modified Silica Coated Magnetite Nanoparticles for Removal of Iodine from Water Samples

Chemisorption and Thermodynamic Data of the Interaction between a Chelate Free Acidic Center with Basic Groups Attached to Grafted Silicas

Determination of Copper, Iron, Nickel and Zinc in fuel kerosene by FAAS after adsorption and pre-concentration on 2-aminothiazole-modified silica gel

Contact Info

Product

Resources

About