Search results for "4 nitrophenol"

showing 3 items of 3 documents

Polycrystalline TiO2 impregnated with cardanol-based porphyrins for the photocatalytic degradation of 4-nitrophenol

2004

Hydrogenated cardanol (3-n-pentadecylphenol), a renewable organic resource obtained by vacuum distillation of roasted “cashew nut shell liquid” (CNSL), a by-product of the cashew industry, has been used to synthesize novel lipophilic porphyrins. Polycrystalline TiO2 impregnated with these novel “cardanol-based” porphyrins as sensitizers has been investigated in the photodegradation of 4-nitrophenol (4-NP) in aqueous suspension. The results indicated that the presence of the sensitizer enhances the photoactivity of polycrystalline bare TiO2 in the process. The activating effect was higher in the case of the Cu-complex.

Polycrystalline TiO2Vacuum distillationporphyrin derivativephotocatalytic degradationaldehydechemistry.chemical_compoundcrystallinEnvironmental ChemistryOrganic chemistrycardanolCashew nutPhotodegradationPhotocatalytic degradationcopper complexCardanoltitanium dioxide4 nitrophenol4-NitrophenolPollutionAqueous suspensionchemistryCrystalliteSettore CHIM/07 - Fondamenti Chimici Delle Tecnologieporphyrin4-nitrophenol.Nuclear chemistry
researchProduct

Vibrational dephasing of νs(OH) in 2,6-dichloro-4-nitrophenol

1988

Abstract A detailed analysis of the infrared bandshape of ν s (OH) in intramolecularly hydrogen-bonded 2,6-dichloro-4-nitrophenol in a series of solvents is presented. A distinct dependence of the bandshape and relaxation parameters on the polarity of solvent molecules has been found. The band shifts to lower wavenumbers, broadens and becomes more Gaussian with increasing solvent polarity; correspondingly, the correlation function decays faster and the correlation time decreases. The results are compared with those of previously studied systems. Factors determing the bandshape are discussed.

Quantitative Biology::Biomolecules2 6 dichloro 4 nitrophenolInfraredChemistryPolarity (physics)DephasingOrganic ChemistryRelaxation (NMR)Analytical ChemistryInorganic ChemistrySolventCorrelation functionComputational chemistryPhysical chemistryMoleculePhysics::Chemical PhysicsSpectroscopyJournal of Molecular Structure
researchProduct

Graphite-supported TiO2 for 4-nitrophenol degradation in a photoelectrocatalytic reactor

2009

WOS: 000274769500044

Settore ING-IND/24 - Principi Di Ingegneria ChimicaAnataseMaterials scienceAqueous solutionScanning electron microscopePhotoelectrocatalytic degradation photoelectrocatalytic reactor graphite supported TiO2 4-nitropheol oxidationGeneral Chemical EngineeringContinuous reactorAnalytical chemistryGraphite-Supported Tio2General Chemistry4 Nitrophenol OxidationIndustrial and Manufacturing EngineeringAmorphous solidPhotoelectrocatalytic ReactorElectrodeEnvironmental ChemistrySettore CHIM/07 - Fondamenti Chimici Delle TecnologieGraphiteEnergy sourcePhotoeletrocatalytic DegradationChemical Engineering Journal
researchProduct