Comparison of blue pigments prepared by two different methods

Bernardi, M. I. B.; Cava, Sergio; Paiva-Santos, C. O.; Leite, E. R.; Paskocimas, C. A.; Longo, Elson

doi:10.1016/s0955-2219(02)00057-2

Cited by 64 publications

(22 citation statements)

References 4 publications

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“…Therefore, it is very important to synthesize nanoparticles with desired sizes and properties. The common routes used for the synthesis of nanoparticles include sol-gel method [3,4], hydrothermal technique [5], polyol method [6], chemical vapor deposition [7], spray pyrolysis [8,9], pulsed laser deposition [10], high vacuum evaporation [11], and co-precipitation [12,13].…”

Section: Introductionmentioning

confidence: 99%

Variation in luminescence and bandgap of Zn-doped SnO2 nanoparticles with thermal decomposition

Zulfiqar

Yuan

Jiang

et al. 2016

J Mater Sci: Mater Electron

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Zn doped Tin oxide (SnO 2 :Zn) nanoparticles have been synthesized by the chemical precipitation route with different thermal decomposition temperatures having emission intensities in visible light and narrowed bandgap. Band gap narrowing and emission intensities can be controlled by doping and calcination. The average particle sizes estimated by TEM agree with those calculated by XRD to be around 18.48 and 21.44 nm and the optical bandgap values found to be 1.30 and 2.52 eV in SnO 2 :Zn annealed at 400 and 600°C, respectively. Blue shift in bandgap and decrease in photoluminescence intensity is noticed in (SnO 2 :Zn) nanoparticles with high annealing temperature, which is due to large grain sizes. As the grain sizes grow so defect density decreases and crystallanity increases. These defects act as luminescent centers and cause decrease in emission intensity and increase in band gap.

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Section: Introductionmentioning

confidence: 99%

Variation in luminescence and bandgap of Zn-doped SnO2 nanoparticles with thermal decomposition

Zulfiqar

Yuan

Jiang

et al. 2016

J Mater Sci: Mater Electron

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“…Figure 2c presents the X-ray diffraction pattern for AlCu10-P1 sample annealed at 1000 °C. Al 2 Colorimetric analyses according to the CIE-L*a*b* standard colorimetric method were performed for AlCu10 samples synthesized at different pH annealing temperatures, whose results are presented in Table 1. As can be seen, AlCu10 samples annealed at 600 and 800 °C exhibit negative values of colorimetric coordinates a* and b*, which is located in the third quadrant indicating a mixture of green and blue colors.…”

Section: Resultsmentioning

confidence: 99%

“…These parameters are modified through the changes in the coloring performance of pigments, that depends very much on their thermal stability, their chemical reactivity towards the glaze components, the coordination of host ions, and it also depends on the preparation methodology 2 . Many studies about nanoscale pigments has been achieved in the last years 3,4 .…”

Section: Introductionmentioning

confidence: 99%

Influence of the pH on Al2O3:CuO pigments prepared by a polymeric precursor method

et al. 2012

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Copper (II) aluminate, CuAl 2 O 4 , which is known to be an inverse spinel contains a d 9 metal ion and possesses interesting electronic, magnetic and catalytic properties and is used in industry as ceramic pigments, coatings and catalysts. Al 2 O 3 with 10 mol% Cu (AlCu10) was synthesized by the polymeric precursor method varying the pH of the precursor solution with addition of ammonium hydroxide and ethylenediamine. It was shown that the pyrolysis of the polymeric chain occurs in higher temperatures for samples prepared in higher values of pH. The colorimetric coordinates exhibit dependence with pH and with the increase of annealing temperature. AlCu10 samples prepared with higher values of pH present lower values of colorimetric coordinates, indicating alterations in its color. The luminosity parameters L* increase also as a function of pH.

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“…This behaviour pointed to a progressive formation of the blue Sb 2 O 3 -SnO 2 solid solution [37]. However, the weight loss showed a sharp increase between 1100 °C and 1200 °C (Fig.…”

Section: Electrodes Characterizationmentioning

confidence: 91%

Evaluation of new ceramic electrodes based on Sb-doped SnO2 for the removal of emerging compounds present in wastewater

Mora-Gómez

García-Gabaldón

Ortega

et al. 2018

Ceramics International

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The properties of the ceramic electrodes make them interesting for electrochemical advanced oxidation processes (EAOPs), destined to the elimination of emergent or refractory contaminants, as an alternative to boron-doped-diamond (BDD) electrodes. The oxygen discharge potential (E O2 ) for the ceramic electrodes decreases as the sintering temperature increases, being these values higher than that observed for the Pt electrode and smaller than that for the BDD electrode. This result in a highest rate of 2 COD removal for the electrode sintered at 1050 ºC comparing with the rest of ceramic electrodes under potentiostatic operation. On the other hand, in galvanostatic mode, the performance of the different ceramic electrodes in terms of the degradation of Norfloxacin, used as tested antibiotic, was similar.Comparing the behavior of the ceramic electrode sintered at 1250 ºC and that of the BDD electrode at an applied potential of 3V, it is inferred that although both present similar values in terms of the degradation of Norfloxacin, the rate of removal of the chemical oxygen demand is higher in the case of the BDD.

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Comparison of blue pigments prepared by two different methods

Cited by 64 publications

References 4 publications

Variation in luminescence and bandgap of Zn-doped SnO2 nanoparticles with thermal decomposition

Variation in luminescence and bandgap of Zn-doped SnO2 nanoparticles with thermal decomposition

Influence of the pH on Al2O3:CuO pigments prepared by a polymeric precursor method

Evaluation of new ceramic electrodes based on Sb-doped SnO2 for the removal of emerging compounds present in wastewater

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