Preparation, characterization, and photoluminescence study of PVA/ZnO nanocomposite films

Fernandes, D.M.; Hechenleitner, Ana Adelina Winkler; Lima, S.M.; Andrade, L.H.C.; Caires, Anderson R. L.; Pineda, Edgardo Alfonso Gómez

doi:10.1016/j.matchemphys.2011.03.002

Cited by 135 publications

(39 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This procedure is similar to that described by Fernandes to obtain other metal oxide nanoparticles. [31][32][33] The materials were characterized by BET surface area, using nitrogen adsorption isotherm, X-ray Diffraction (XRD), thermogravimetric analysis (TGA), Fourier Transform Infrared (FTIR), Xr ay photoelectron spectroscopy (XPS), Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and Scanning Electron Microscopy (SEM).…”

Section: Experimental Section Preparation Of the Catalystsmentioning

confidence: 99%

See 1 more Smart Citation

Direct Carbonation of Glycerol with CO₂ Catalyzed by Metal Oxides

Ozorio

Mota

2017

ChemPhysChem

View full text Add to dashboard Cite

Five metal oxides (ZnO, SnO2, Fe2O3, CeO2, La2O3) were produced by the sol–gel method and tested in the direct carbonation of glycerol with CO2. Initial tests with Fe2O3 showed that the best reaction condition was 180 °C, 150 bar, and 12 h. The other oxides were evaluated at these conditions and were all active to the formation of glycerol carbonate. Zinc oxide was the most active catalyst, with a yield of 8.1 % in the organic carbonate. The catalytic activity decreased upon washing and drying the ZnO catalyst between the runs. Nevertheless, the activity is maintained if the ZnO is washed and calcined at 450 °C between the runs. FTIR and TGA results indicated the formation of ZnCO3 as the main cause of catalyst deactivation, which may be decomposed upon calcination of the material. No appreciable leaching of Zn was observed, indicating a truly heterogeneous catalysis.

show abstract

Section: Experimental Section Preparation Of the Catalystsmentioning

confidence: 99%

“…[29,30] In this work, we used this methodology to prepare differentm etal oxides through the use of polyvinyl alcohol (PVAl) as template. [31][32][33] …”

Section: Introductionmentioning

confidence: 99%

Direct Carbonation of Glycerol with CO₂ Catalyzed by Metal Oxides

Ozorio

Mota

2017

ChemPhysChem

View full text Add to dashboard Cite

show abstract

“…On the other hand, inorganic nanoparticles possess excellent optical, catalytic, electronic, and magnetic properties [3][4][5][6][7]. By combining these two components, nanocomposites derived from organic polymers and inorganic nanoparticles are expected to improve properties [8][9][10][11][12]. In general, these resulting organic polymer-based inorganic nanoparticle composites have been used in various fields such as electronics, coatings, and catalysis [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Effect of silane-modified ZnO on morphology and properties of bionanocomposites based on poly(ester-amide) containing tyrosine linkages

2011

View full text Add to dashboard Cite

In this study, various optically active poly(ester-amide)/Zinc oxide bionanocomposites (PEA/ZnO BNCs) were synthesized with different amount of modified ZnO nanoparticles using ultrasonic irradiation. To obtain the homogeneous distribution of ZnO in polymer matrix, the surface of nanoparticles was modified to organophile with c-aminopropyltriethoxyl silane. PEA/ZnO BNCs were characterized by Fourier transform infrared spectra, X-ray diffraction, field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), and transmission electron microscopy (TEM). The FE-SEM, AFM, and TEM results confirmed that the nanoparticles were dispersed uniformly in PEA matrix at the nanoscale. In addition, thermogravimetric analysis data indicated an improvement of thermal stability of novel BNC materials as compared to the pure polymer.

show abstract

“…Nanoparticles of hematite were elaborated by modified aqueous sol-gel method [17]. Saturated aqueous metal nitrate solution was prepared and maintained at room temperature under stirring for two hours.…”

Section: Methodsmentioning

confidence: 99%

Morin transition in Hematite nanoparticles analyzed by neutron diffraction

Pérez-Landazábal

Gómez‐Polo

Recarte

et al. 2015

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Abstract. Hematite (α-Fe2O3) undergoes a first order spin reorientation transition called the Morin transition: upon cooling, the moments align antiferromagnetically along the rhombohedral axis, and the net magnetic moment goes to zero. Morin transition temperature is around to 260K in bulk materials and depends on the mean particle size. In this work, the Morin transition has been studied by neutron diffraction as function of temperature and applied magnetic field in 47 nm nanoparticles. The Rietveld analysis of the diffraction spectra around the Morin transition shows a similar behavior to that found in bulk samples. On the other side, the magnetic field induced phase transformation has been analyzed.

show abstract

Preparation, characterization, and photoluminescence study of PVA/ZnO nanocomposite films

Cited by 135 publications

References 30 publications

Direct Carbonation of Glycerol with CO₂ Catalyzed by Metal Oxides

Direct Carbonation of Glycerol with CO₂ Catalyzed by Metal Oxides

Effect of silane-modified ZnO on morphology and properties of bionanocomposites based on poly(ester-amide) containing tyrosine linkages

Morin transition in Hematite nanoparticles analyzed by neutron diffraction

Contact Info

Product

Resources

About

Preparation, characterization, and photoluminescence study of PVA/ZnO nanocomposite films

Cited by 135 publications

References 30 publications

Direct Carbonation of Glycerol with CO2 Catalyzed by Metal Oxides

Direct Carbonation of Glycerol with CO2 Catalyzed by Metal Oxides

Effect of silane-modified ZnO on morphology and properties of bionanocomposites based on poly(ester-amide) containing tyrosine linkages

Morin transition in Hematite nanoparticles analyzed by neutron diffraction

Contact Info

Product

Resources

About

Direct Carbonation of Glycerol with CO₂ Catalyzed by Metal Oxides

Direct Carbonation of Glycerol with CO₂ Catalyzed by Metal Oxides