calixarenes and titanium-dioxide

calixarenes has been researched along with titanium-dioxide* in 2 studies

Other Studies

2 other study(ies) available for calixarenes and titanium-dioxide

Article	Year
Immobilization of calix[4]arene-based glycoclusters on TiO2 nanoparticles via click Cu(I)-catalyzed azide-alkyne coupling. Chemical communications (Cambridge, England), 2010, Jan-21, Volume: 46, Issue:3 We present the first type of tetraazide-functionalized calix[4]arene TiO(2) nanoparticles and their coupling to propargyl glycosides under Cu(I)-catalysis (click reaction), resulting in the immobilization of calix[4]arene-based glycoclusters on the TiO(2) surface. Topics: Alkynes; Azides; Calixarenes; Catalysis; Copper; Glycosides; Nanoparticles; Phenols; Titanium	2010
Coupling process between solid-liquid extraction of amino acids by calixarenes and photocatalytic degradation. Journal of hazardous materials, 2009, Jul-30, Volume: 166, Issue:2-3 The removal of biological or pharmaceutical compounds through the wastewater treatment becomes relevant. These compounds are present as traces in sewage. In this work, we propose a coupling process which combines the pre-concentration of the pollutant by selective extraction and then degradation of these pollutants by photocatalysis in presence of TiO2. This process is efficient at room temperature by activation of a photocatalyst (TiO2) under UV light. Aromatic amino acids were chosen as model of pharmaceutical pollutants. Their extraction from water, ensured by calixarene derivatives, and their photocatalytic degradation were investigated. It was shown that photodegradation follows a first-order kinetic and that the rate constant enhances with amino acid concentration. The effect of the pH on the rate constant will be discussed. Topics: Amino Acids, Aromatic; Calixarenes; Catalysis; Hydrogen-Ion Concentration; Kinetics; Pharmaceutical Preparations; Photolysis; Solid Phase Extraction; Titanium; Ultraviolet Rays; Water Pollutants, Chemical	2009

Article

Year

Immobilization of calix[4]arene-based glycoclusters on TiO2 nanoparticles via click Cu(I)-catalyzed azide-alkyne coupling.

Chemical communications (Cambridge, England), 2010, Jan-21, Volume: 46, Issue:3

We present the first type of tetraazide-functionalized calix[4]arene TiO(2) nanoparticles and their coupling to propargyl glycosides under Cu(I)-catalysis (click reaction), resulting in the immobilization of calix[4]arene-based glycoclusters on the TiO(2) surface.

Topics: Alkynes; Azides; Calixarenes; Catalysis; Copper; Glycosides; Nanoparticles; Phenols; Titanium

2010

Coupling process between solid-liquid extraction of amino acids by calixarenes and photocatalytic degradation.

Journal of hazardous materials, 2009, Jul-30, Volume: 166, Issue:2-3

The removal of biological or pharmaceutical compounds through the wastewater treatment becomes relevant. These compounds are present as traces in sewage. In this work, we propose a coupling process which combines the pre-concentration of the pollutant by selective extraction and then degradation of these pollutants by photocatalysis in presence of TiO2. This process is efficient at room temperature by activation of a photocatalyst (TiO2) under UV light. Aromatic amino acids were chosen as model of pharmaceutical pollutants. Their extraction from water, ensured by calixarene derivatives, and their photocatalytic degradation were investigated. It was shown that photodegradation follows a first-order kinetic and that the rate constant enhances with amino acid concentration. The effect of the pH on the rate constant will be discussed.

Topics: Amino Acids, Aromatic; Calixarenes; Catalysis; Hydrogen-Ion Concentration; Kinetics; Pharmaceutical Preparations; Photolysis; Solid Phase Extraction; Titanium; Ultraviolet Rays; Water Pollutants, Chemical

2009