Synthesis of PTSH-modified CeO2 nanoparticles: Effect of the modifier on structure, optical properties, and dispersibility

Truffault, Laurianne; Andrezza, Caroline; Santilli, Celso Valentim; Pulcinelli, Sandra Helena

doi:10.1016/j.colsurfa.2013.03.011

Cited by 8 publications

(6 citation statements)

References 19 publications

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“…Moreover, the narrow and sharp band near 1384 cm −1 is attributed to the presence of NO3 − groups [30]. As it is evident, the absorption bands mentioned above decrease gradually until disappear with the increasing of treatment temperature.…”

Section: Ft-ir Analysismentioning

confidence: 76%

“…The spectrum of the CeO 2 xerogel (120˝C) shows a broad absorption band located in the region from 3600 to 3000 cm´1 approximately, which corresponds to the -OH stretching vibration (water or ethanol), while the bands around 1632 and 1503 cm´1 are associated with the H 2 O bending vibration [29], confirming the presence of residual physisorbed water. Moreover, the narrow and sharp band near 1384 cm´1 is attributed to the presence of NO 3´g roups [30]. As it is evident, the absorption bands mentioned above decrease gradually until disappear with the increasing of treatment temperature.…”

Section: Ft-ir Analysismentioning

confidence: 77%

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Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

et al. 2015

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Thick and homogeneous hybrid film systems based on poly(methyl methacrylate) (PMMA) and CeO2 nanoparticles were synthesized using the melt compounding method to improve thermal stability, mechanical and UV-shielding properties, as well as to propose them for use in the multifunctional materials industry. The effect of the inorganic phase on these properties was assessed by using two different weight percentages of synthesized CeO2 nanoparticles (0.5 and 1.0 wt %) with the sol–gel method and thermal treatment at different temperatures (120, 235, 400, 600 and 800 °C). Thereafter, the nanoceria powders were added to the polymer matrix by single screw extrusion. The absorption in the UV region was increased with the crystallite size of the CeO2 nanoparticles and the PMMA/CeO2 weight ratio. Due to the crystallinity of CeO2 nanoparticles, the thermal, mechanical and UV-shielding properties of the PMMA matrix were improved. The presence of CeO2 nanostructures exerts an influence on the mobility of PMMA chain segments, leading to a different glass transition temperature.

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Section: Ft-ir Analysismentioning

confidence: 76%

Section: Ft-ir Analysismentioning

confidence: 77%

Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

et al. 2015

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“…And the band at 780 cm −1 is related to the stretching vibrations of C–C groups. The spectra obtained from samples annealed at 200 and 300 °C show the characteristic band of Ce–O stretching vibrations, located at around 500 cm −1 [ 32 ]. The spectrum of a sample calcined at 300 °C shows the presence of a small amount of organic matter.…”

Section: Resultsmentioning

confidence: 99%

Simple Route to Obtain Nanostructured CeO2 Microspheres and CO Gas Sensing Performance

et al. 2017

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In this work, nanostructured CeO2 microspheres with high surface area and mesoporosity were prepared by the coprecipitation method, in absence of a template. The reaction between cerium nitrate and concentrated formic acid produced cerium formate, at room temperature. Further, calcination at 300 °C yielded single-phase CeO2 microspheres, with a diameter in the range 0.5–2.6 μm, the surface of these microspheres is completely nanostructured (diameter about 30–90 nm). CeO2 microspheres were used to fabricate a sensor device, and it was tested for intermediate CO gas concentrations (200–800 ppm). The detection of 200 ppm carbon monoxide was observed at 275 °C, with a response time of 9 s, using an applied frequency of 100 kHz. The detection of changes on the CO gas concentration was studied at different temperatures and applied frequencies. The results revealed a reproducible and stable gas sensing response.

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“…[9][10][11] Currently, a variety of chemical techniques have been utilized to prepare ceria nanocrystals (NCs), including the solgel method, 12 precipitation, 13 microemulsion process, 14 sonochemical method, 12 glycine-nitrate combustion, 15 and surfactant template synthesis. [16][17][18][19][20] The hydro/solvothermal method is one of the most important approaches for the preparation of novel nanostructures. 21,22 In particular, polyol-mediated (e.g.…”

Section: Introductionmentioning

confidence: 99%

Controllable synthesis, photocatalytic and electrocatalytic properties of CeO₂ nanocrystals

Wang

Zou

et al. 2015

RSC Adv.

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Synthesis of PTSH-modified CeO2 nanoparticles: Effect of the modifier on structure, optical properties, and dispersibility

Cited by 8 publications

References 19 publications

Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

Simple Route to Obtain Nanostructured CeO2 Microspheres and CO Gas Sensing Performance

Controllable synthesis, photocatalytic and electrocatalytic properties of CeO₂ nanocrystals

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Synthesis of PTSH-modified CeO2 nanoparticles: Effect of the modifier on structure, optical properties, and dispersibility

Cited by 8 publications

References 19 publications

Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

Simple Route to Obtain Nanostructured CeO2 Microspheres and CO Gas Sensing Performance

Controllable synthesis, photocatalytic and electrocatalytic properties of CeO2 nanocrystals

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Product

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Controllable synthesis, photocatalytic and electrocatalytic properties of CeO₂ nanocrystals