Buscar
Mostrando ítems 31-40 de 303
A simple synthesis way to obtain iron-doped TiO2 nanoparticles as photocatalytic surfaces
(Elsevier Science, 2019-07)
Mesoporous TiO2 nanoparticles synthesized by the sol-gel method were impregnated with different iron contents (0.0125, 0.025, 0.1, 1.0 wt%). The samples were characterized by XRD, UV–Vis DR, N2 adsorption/desorption, SEM ...
Remotion of the antibiotic tetracycline by titania and titania-silica composed materials
(Elsevier Science, 2011-09)
Removal of the antibiotic tetracycline (TC) by TiO 2 and the mesoporous binary system TiO 2-SiO 2 have been studied in batch experiments by performing adsorption isotherms/kinetics and photodegradation kinetics under ...
Synthesis and characterization of mesoporous TiO2 nanostructured films prepared by a modified sol–gel method for application in dye solar cells
(Elsevier, 2010-12-02)
Anatase TiO2 colloidal dispersions were obtained by hydrothermal synthesis at 200 8C from titanium isopropoxide gels modified with acetic acid in the presence of a non-ionic surfactant. Absolute ethanol, anhydrous terpineol ...
Molecular Transport through TiO2Mesoporous Thin Films: Correlation with the Partially Blocked Electrode Model
(American Chemical Society, 2021-10)
Mesoporous titania thin film (MTTF)-based electrodes are vastly popular due to their versatility and their potential use as sensors, catalysts, and photovoltaic devices. For these applications, understanding of diffusion ...
CdS SENSITIZED TiO2 NANOCRYSTALLINE PHOTOANODES FOR SOLAR CELLS
(VI INTERNATIONAL CONFERENCE ON SURFACE, MATERIALS AND VACUUM PAG. 231, MERIDA, YUCATAN MEXICO, 2013-09-27)
Dye-sensitized nanocrystalline solar cells (DSSC) are a promising alternative to conventional p–n junction solar cells. The advantage of DSSCs over other types of photovoltaic cells is the relative simplicity of their ...
Desenvolvimento de agente multifuncional fotocatalítico à base de partículas de TiO2 para aplicação em materiais de uso hospitalar
(2021)
O trabalho a seguir, tem por objetivo o desenvolvimento de um agente multifuncional fotocatalítico à base de dióxido de titânio (TiO2), para aplicação em materiais de uso hospitalar. Dois hidrossóis foram obtidos pelo ...
Mesoporous silica-titania composed materials
(Academic Press Inc Elsevier Science, 2006-08)
Titania mesosized particles were obtained by TiCl4 hydrolysis in Aerosol OT/water/n-hexane microemulsion. These particles were incorporated in surfactant templated silica mesoporous materials of MCM-41 and MCM-50 structures. ...
One step synthesis of high efficiency nickel/mesoporous TiO2 hybrid catalyst for hydrogen evolution reaction
(Elsevier B.V., 2019-02)
Nickel-TiO2 hybrid catalysts are synthesized by electrodeposition and their catalytic activity with respect to the hydrogen evolution reaction is analyzed. Two types of titanium oxide particles, which are commercial particles ...
Bimetallic ag-au nanoparticles inside mesoporous titania thin films: Synthesis by photoreduction and galvanic replacement, and catalytic activity
(Wiley VCH Verlag, 2020-02)
In this work, the synthesis and catalytic activity of bimetallic Ag–Au nanoparticles (NPs) supported in TiO2 mesoporous thin films (MTFs) are presented. The composite materials were obtained through a two-step procedure, ...
Annealing temperature effects on sol-gel nanostructured mesoporous TiO2/SiO2 and its photocatalytic activity
(Elsevier Science SaLausanneSuíça, 2011)