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Effect of operational parameters on photocatalytic degradation of ethylparaben using rGO/TiO2 composite under UV radiation
(2021)
The objective of this study was to analyze the influence of different operational variables (catalyst loading, initial EtP concentration, medium pH, the presence of anions and radical scavengers) on the performance of ...
Photoelectrocatalytic performance of nanostructured p-n junction NtTiO2/NsCuO electrode in the selective conversion of CO2 to methanol at low bias potentials
(2018-03-01)
Aiming a selective reduction of CO2 to methanol, a p-n junction semiconductor was constructed based on CuO nanospheres (NsCuO) deposited at TiO2 nanotubes (NtTiO2). The NtTiO2/NsCuO material demonstrated smaller charge ...
Antitumoral, Antihypertensive, Antimicrobial, and Antioxidant Effects of an Octanuclear Copper(II)-Telmisartan Complex with an Hydrophobic Nanometer Hole
(American Chemical Society, 2014-05-13)
A new Cu(II) complex with the antihypertensive drug telmisartan, [Cu8Tlm16].24H2O (CuTlm), was synthesized and characterized by elemental analysis and electronic, FTIR, Raman and EPR spectroscopy. The crystal structure (at ...
Experimental Evidence in Favor of an Initial One-Electron-Transfer Process in the Heterogeneous Photocatalytic Reduction of Chromium(VI) over TiO 2
(American Chemical Society, 2001-06)
Direct evidence of the involvement of Cr(V) intermediacy in Cr(VI) heterogeneous photocatalytic reduction over TiO2 was obtained by EPR spectroscopy, in the presence and absence of ethylenediaminetetraacetic acid (EDTA). ...
Oxalic Acid as a Sacrificial Agent in the Photoreduction of Water Contaminants
(Nova Science Publishers, 2012)
Oxalic acid (OA) as a sacrificial agent (hole scavenger) in the photoreduction of Cr(VI), was evaluated in a radiation efficient photocatalytic fluidized bed (FB) of a TiO2-quartz sand catalyst composite vis à-vis the ...
Nitric oxide emission during the reductive heterogeneous photocatalysis of aqueous nitrate with TiO2
(Royal Society of Chemistry, 2015-10)
For the first time, nitric oxide (NO), a precursor of nitrogen dioxide (NO2, a NIOSH-listed atmospheric pollutant), has been found to be one of the final products of the photocatalytic reduction of nitrate in water using ...
Síntese e aplicação do SrTiO3 na fotodecomposição da água para a geração de hidrogênio
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Química - PPGQ, 2014-07-11)
Strontium titanate (SrTiO3) is an n-type semiconductor with high chemical and photochemical stability. This wide band gap oxide has a band gap energy of about 3.2 eV as well as a favorable energy for photocatalysis. In ...
Prussian blue as a co-catalyst for enhanced Cr(vi) photocatalytic reduction promoted by titania-based nanoparticles and aerogels
(Royal Soc Chemistry, 2021-04-26)
Hexavalent chromium (Cr(vi)) is an noxious and highly toxic heavy metal that presents a serious threat to human health if present even in low concentrations in drinking water. Photocatalytic reduction of Cr(vi) to its less ...
Effect of ionic liquid in a pressurized reactor to enhance CO2 photocatalytic reduction at TiO2 modified by gold nanoparticles
(2022-01-01)
This work describes the synergic effect of gold nanoparticles as co-catalyst on TiO2 nanotubes (TNT/AuNP) in aqueous medium containing the ionic liquid (IL) 1-Butyl-3-methylimidazolium tetrafluoroborate, in a pressurized ...
Investigação do mecanismo de degradação e da participação de agentes sequestrantes na fotocatálise com TiO2/UV do corante índigo carmina
(Universidade Federal do Rio de JaneiroBrasilInstituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de EngenhariaPrograma de Pós-Graduação em Engenharia QuímicaUFRJ, 2020)