Effect of Calcination Temperature on Structural Properties and Photocatalytic Activity of Ceria Nanoparticles Synthesized Employing Chitosan as Template

Sifontes, Ángela B.; Rosales, Maibelín; Méndez, Franklin J.; Oviedo, Olycen; Zoltan, Tamara

doi:10.1155/2013/265797

Cited by 52 publications

(20 citation statements)

References 41 publications

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“…Ceria nanoparticles were prepared by the method reported by Sifontes et al [13], chitosan (0.8 g) was dissolved in 40 mL of 3 % (v/v) acetic acid. 1 M of ammonium cerium nitrate was used as precursor solution.…”

Section: Synthesis Of Ceria Nanoparticlesmentioning

confidence: 99%

Visible Range Photocatalysts for Solid Phase Photocatalytic Degradation of Polyethylene and Polyvinyl Chloride

Gupta

Lakshmp

Manivannan

et al. 2017

J. Chil. Chem. Soc.

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Solid phase photocatalytic degradation of polyethylene (PE) and polyvinyl chloride (PVC) with various photocatalysts such as ceria annealed at 350°C and 850°C, zinc oxide annealed at 250°C, copper sulfide and titania particles was studied under different light sources. Except titania, all the other photocatalysts performed reasonably well both in the visible and ultraviolet (UV) radiations. Ceria annealed at 850°C showed degradation efficiencies higher than 70% for PVC in the fluorescent and solar radiation. Ceria annealed at 350°C showed degradation efficiencies higher than 75% for polyethylene in fluorescent, solar and UV radiation. The Fourier transform infrared spectroscopy studies show the presence of adsorbed carbon dioxide on the degraded polymer-photocatalyst composite films. The UV-visible spectroscopic studies show that the ceria, zinc oxide and copper sulfide photocatalysts are active in the visible spectrum resulting in enhanced degradation efficiency in fluorescent and solar radiation.

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Section: Synthesis Of Ceria Nanoparticlesmentioning

confidence: 99%

Visible Range Photocatalysts for Solid Phase Photocatalytic Degradation of Polyethylene and Polyvinyl Chloride

Gupta

Lakshmp

Manivannan

et al. 2017

J. Chil. Chem. Soc.

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“…This property is also responsible for their templating ability in the sol-gel preparation of titania nanoparticles. Sol-gel synthesis of ceria nanoparticles using chitosan as a template yielded low crystallite size, high surface area and mesoporous ceria [14,15]. Kadib with filamentary nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Influence of chitosan–PEG binary template on the crystallite characteristics of sol–gel synthesized mesoporous nano-titania photocatalyst

Preethi

Abarna

Rajarajeswari

2014

Applied Surface Science

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a b s t r a c tNano-titania is by far, the most studied material for its photocatalytic application in air and water pollution abatement. In this study, we have demonstrated the advantage offered by using a binary template of PEG and chitosan for the sol-gel synthesis of titania. Nano-titania samples were prepared using PEG, chitosan and the binary combination of these two as templates. XRD showed that all synthesized samples preserved the anatase structure. Titania sample prepared on 1% PEG and 3% chitosan as template (P1-C3 titania) possessed spherical shaped particles with an average particle size of 12.3 nm, a surface area of 82.9 m 2 /g and uniform dispersion. DRS UV-Vis spectra indicated that, P1-C3 titania showed blue shift in its absorption profile due to decrease in particle size. Consistent with the characteristics, the P1-C3 titania exhibited the highest photocatalytic activity for the degradation of 4-chlorophenol under UV irradiation, in comparison with all the synthesized photocatalytic systems and Degussa-P25. The chitosan bio template is believed to offer controlled growth of titania through Lewis base type interaction with Ti metallic centers in TiO 2 . Such controlled growth route will be significant in synthesizing custom-made titania for its advanced applications in catalytic processes.

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“…Where, D is the degradation and decolorization of the dye (%), C 0 , Ai is the initial concentration of MB and C, At is the remaining concentration of MB after irradiation in the desired time interval [18,19]. Table 2.…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

Enhancement of Photocatalytic Activity by Mg2+ Doped Ceria Quantum Dots

2017

IJNN

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The pure and Mg2+ doped CeO2 quantum dot were synthesized by sol-gel technique. The prepared quantum dots were characterized using X-ray diffraction pattern (XRD), Scanning electron microscope (SEM-EDX). The XRD results show cubic structure of the CeO2 quantum dots. The crystalline size (D), microstrain (ε), dislocation density (δ) and lattice parameter (α) were calculated and analyzed. SEM-EDX analysis shows the morphology and the presence of elements. The photocatalytic activity of the synthesized quantum dot was evaluated based on the photodegradation of methylene blue (MB) by UV-Vis spectrometry.

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Effect of Calcination Temperature on Structural Properties and Photocatalytic Activity of Ceria Nanoparticles Synthesized Employing Chitosan as Template

Cited by 52 publications

References 41 publications

Visible Range Photocatalysts for Solid Phase Photocatalytic Degradation of Polyethylene and Polyvinyl Chloride

Visible Range Photocatalysts for Solid Phase Photocatalytic Degradation of Polyethylene and Polyvinyl Chloride

Influence of chitosan–PEG binary template on the crystallite characteristics of sol–gel synthesized mesoporous nano-titania photocatalyst

Enhancement of Photocatalytic Activity by Mg2+ Doped Ceria Quantum Dots

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