Preparation and characterization of TiO2/Fe2O3 binary mixed oxides and its photocatalytic properties

Pal, Bonamali; Sharon, Maheshwar; Nogami, Gyoichi

doi:10.1016/s0254-0584(99)00071-1

Cited by 203 publications

(95 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A board exothermic peak at around 580-680°C and extending to 750°C is attributed to the phase transformation from the anatase to rutile phase, similar to those reported by studies (Chhor et al, 1992;Qin et al, 1994). The presence of metallic ions may facilitate the transformation of the anatase to rutile by lowering the transition temperature from anatase to rutile (Pal et al, 1999). Further, vanadium-doped TiO 2 are reported to be present in the form of a solid state with a nonstoichiometric formula of V x Ti 1-x O 2 between 600 to 800°C (Martin et al, 1994b).…”

Section: Thermal Analysis Of V/tiosupporting

confidence: 82%

See 1 more Smart Citation

Photocatalytic Degradation of 1, 2-dichloroethane by V/TiO2: The Mechanism of Photocatalytic Reaction and Byproduct

Hung

Chen

Chu

2014

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

The nano-sized V/TiO 2 prepared by a sol-gel method calcined at 500°C for 3 h was characterized in this study. The synthesized photo-catalysts were used for the photo-degradation of 1, 2-dichloroethane (1, 2-DCE). From X-ray powder diffraction data, the crystal phase presents the mixture of anatase and rutile phases with anatase the dominant phase. From TEM images, the crystallites of photo-catalysts are spherical particles with a crystallite size about 10-20 nm. UV-Visible absorption spectra of V/TiO 2 show a slightly increase in absorbance in the visible light region with the increasing vanadium ion doping concentration. The X-ray photoelectron spectroscopy results indicate that the doped vanadium ions exist in the form of V (IV). The V (IV) may alleviate the surface poison phenomenon and act as both h + /e -traps to reduce the recombination rate of h + /e -pairs, and the optimum vanadium doping amount is 0.01 mol%. The products and byproducts of 1, 2-DCE photo-degradation include H 2 O, CO, CO 2 , C 2 H 5 Cl, CH 2 Cl 2 , and HCl.

show abstract

Section: Thermal Analysis Of V/tiosupporting

confidence: 82%

“…Pal et al (1999) pointed out that the presence of Fe may lower the transition temperature from anatase to rutile. When Fe doping amount increased, the rutile phase also increases.…”

Section: X-ray Diffraction Patterns Of V/tiomentioning

confidence: 99%

Photocatalytic Degradation of 1, 2-dichloroethane by V/TiO2: The Mechanism of Photocatalytic Reaction and Byproduct

Hung

Chen

Chu

2014

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

show abstract

“…The spectrum of T A/R -Fe3 is more complex and characterized by a step-like adsorption (at about 600 nm) indicating the overwhelming presence of iron oxide (Fe 2 O 3 ) particles, as already revealed by XRD spectrum and the color of the samples which turns to reddish (inset in Fig. 2A) (Pal et al 1999). …”

Section: Structural Properties Of the Powders And Elemental Compositionmentioning

confidence: 57%

Inhibition of the ROS-mediated cytotoxicity and genotoxicity of nano-TiO2 toward human keratinocyte cells by iron doping

et al. 2014

View full text Add to dashboard Cite

Inhibition of the ROS-mediated cytotoxicity and genotoxicity of nano-TiO 2 toward human keratinocyte cells by iron doping J Nanopart Res (2014) Nano-TiO 2 powders are widely used in sunscreen lotions as UV filters in combination with other substances. The activation of TiO 2 by UV rays leads to the release of reactive oxygen species (ROS, e.g., hydroxyl radicals and singlet oxygen) which are potentially harmful. For this reason the TiO 2 particles are generally coated with inert materials (e.g., silica or alumina) that inhibit such reactivity. Alternatively, the release of ROS may be inhibited by introducing in the TiO 2 lattice doping elements. In the present study we report a new modification consisting in a wet impregnation of TiO 2 with iron salts followed by a thermal treatment that results in an inhibition of the surface reactivity. The insertion of iron ions also gradually reduces the ability of photo-activated TiO 2 to cleave DNA and proteins. At the same time, a clear inhibition of cyto-and geno-toxicity toward human (HaCaT) keratinocytes was observed. The data presented herein suggest the insertion of Fe 3+ ions at the surface of nano-TiO 2 as a promising strategy to reduce the photo-induced toxicity of nano-TiO 2 powders.

show abstract

“…For purifying and complete mineralizing of organic pollutants in industrial waste water and air, the heterogeneous photocatalytic process is one of the upcoming and fast growing research area 8 . Research has been carried out using 3-d transition metal ions for the preparation of ternary oxides so that these ternary oxides becomes more applicable in visible range .It is possible to change redox potential with change in size of nanoparticle, which in turn effects photocatalytic activity [9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

Use of Pure and N, S-Codoped Bimetallic Cerium Cadmium Oxide Nanoparticles as Photocatalyst for the Photodegradation of Fast Green

Sharma¹,

Ameta²

2017

Orient. J. Chem

View full text Add to dashboard Cite

Photocatalytic degradation of fast green using pure and N-S codoped bimetal nanoparticles CeCdO 3 has been studied. The CeCdO 3 nanoparticles were synthesized by wet precipitation method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and FTIR. The rate of photocatalytic reaction was examined spectrophotometrically using pure and N, S-codoped catalyst. The effect of variation in parameters like pH, concentration of dye, amount of nanoparticle, dopant percentage and light intensity on the photocatalytic degradation of dye was studied. A tentative mechanism for the photocatalytic degradation has been suggested.

show abstract

Preparation and characterization of TiO2/Fe2O3 binary mixed oxides and its photocatalytic properties

Cited by 203 publications

References 26 publications

Photocatalytic Degradation of 1, 2-dichloroethane by V/TiO2: The Mechanism of Photocatalytic Reaction and Byproduct

Photocatalytic Degradation of 1, 2-dichloroethane by V/TiO2: The Mechanism of Photocatalytic Reaction and Byproduct

Inhibition of the ROS-mediated cytotoxicity and genotoxicity of nano-TiO2 toward human keratinocyte cells by iron doping

Use of Pure and N, S-Codoped Bimetallic Cerium Cadmium Oxide Nanoparticles as Photocatalyst for the Photodegradation of Fast Green

Contact Info

Product

Resources

About