Optical characterization of sol–gel ZnO:Al thin films

Ivanova, T.; Harizanova, A.; Koutzarova, T.; Vertruyen, Bénédicte

doi:10.1016/j.spmi.2015.05.013

Cited by 24 publications

(4 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…13 O pico em 577 cm -1 pode estar relacionado à presença de espécies AlO 6 na amostra. 15 Com relação ao espectro referente à resina contendo nióbio e alumínio (NbAlPC), é possível identificar vários picos já presentes nos espectros anteriores. Em 3431 cm -1 há uma banda referente à deformação axial de grupo OH pertencente a álcoois e/ou a água adsorvida no material.…”

Section: Curvas De Polarização Anódica E Catódicaunclassified

“…Por fim, em 560 cm -1 há uma banda que pode estar relacionada à presença de grupos AlO 6 e/ou vibrações de Nb-O. 14,15 Microscopia resultado indica que estes filmes de óxidos possuem satisfatória atuação, conferindo proteção por barreira ao substrato metálico. A camada pertencente ao NbPC mostrou comportamento intermediário entre os sistemas contendo alumínio (AlPC e NbAlPC) e o aço carbono decapado.…”

Section: Curvas De Polarização Anódica E Catódicaunclassified

See 1 more Smart Citation

SÍNTESE DE Nb2O5, Al2O3 E Nb2O5/Al2O3 VIA MÉTODO DE PECHINI COMO PRÉ-TRATAMENTO ALTERNATIVO PARA ESQUEMAS DE PINTURA DO AÇO CARBONO AISI 1005

Café¹,

Bendinelli²,

Amorim³

et al. 2018

Quim. Nova

View full text Add to dashboard Cite

1005 COATING SYSTEMS. The use of industrial painting is one of the methods for corrosion protection of metals and requires a suitable surface treatment on the metallic substrate for better adhesion between metal and paint film. In cases where the substrate presents low thickness (less than 2 mm), the phosphating pretreatment is widely used, despite of such process generates harmful residues to environment and human health. In this context, the sol-gel method has been highlighted as an easy and a cheap process, and less harmful to the environment. This work shows the development of carbon steel AISI 1005 pre-treatment by sol-gel method using niobium and/or aluminium-containing-resins, synthetized by Pechini method. Electrochemical and performance analysis were carried out in samples coated by the resins, which showed analogous behavior to phosphated systems. The proposed pre-treatment has potential for phosphating process replacement, because the morphology of the deposited layers enhanced the metallic contact surface with the organic coating, increasing its mechanical and polar adhesion. Such observation can justify its better anticorrosive performance, comparing to the untreated substrate.

show abstract

Section: Curvas De Polarização Anódica E Catódicaunclassified

SÍNTESE DE Nb2O5, Al2O3 E Nb2O5/Al2O3 VIA MÉTODO DE PECHINI COMO PRÉ-TRATAMENTO ALTERNATIVO PARA ESQUEMAS DE PINTURA DO AÇO CARBONO AISI 1005

Café¹,

Bendinelli²,

Amorim³

et al. 2018

Quim. Nova

View full text Add to dashboard Cite

show abstract

“…Synthesis of nanocrystalline films based on zinc oxide is in the high research interest due to their wide application. A lot of authors described different synthesis methods in details, such as pulsed laser deposition [14], physical vapor deposition [15], chemical vapor deposition [16,17], sol-gel [18], hydrothermal [19], spray pyrolysis [20] methods. Different techniques and methods have disadvantages associated with high costs energy efficiency, lack of ecology, and the use of expensive equipment.…”

Section: Introductionmentioning

confidence: 99%

Effect of calcination temperature on phase composition and optical properties of Al-ZnO nanocrystalline films

et al. 2023

View full text Add to dashboard Cite

Nanocrystalline Al-ZnO films were successfully synthesized by thermal decomposition method. The method includes two stages: synthesis from the melt of organic salts and the films production. The effect of the calcination temperature varying from 600 to 800 °C on the crystallite sizes, phase composition and optical properties of the synthesized films was also investigated. X-ray diffraction (XRD) showed the formation of a hexagonal wurtzite crystal structure with a distorted lattice upon the introduction of Al3+ ions. Based on calculations and scanning electron microscopy (SEM) images, the crystallites size increased from 18 to 28 nm with the calcination temperature increasing. Optical properties of Al-ZnO films were studied by optical transmission spectra. An increase in the calcination temperature leads to a decrease in the ZnO band gap. It was shown that the proposed method makes it possible to obtain optically transparent Al-ZnO films consisting of nanocrystallites. By varying the calcination temperature, the optical properties can be adjusted, which will significantly expand the application range of these materials.

show abstract

“…In the past few decades, the sol-gel method (combined with other techniques including microwave heating, ultrasonication, spin-coating, dip coating, laminar flow coating, and strong field induction) have been used to prepare various kinds of advanced materials with different morphologies including magnetic [1,2,3,4,5,6,7,8,9,10], optical [11,12,13], electronic [14,15], and structural [16,17,18,19,20,21,22,23,24,25] particles, and hollow spheres [26], fibers [27], nanowires [28] and films [29,30,31,32,33,34]. Many reviews have been published on the preparation of particles and coatings using the sol-gel process; for instance, Guo et al [35] summarized the sol-gel synthesis and application of monodisperse nanoparticles and granules including Li 2 TiO 3 , ZnO-B 2 O 3 -SiO 2 additive, La 1−x Sr x CoO 3-δ (x = 0.1 − 0.7) and Y 3 Al 5 O 12 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Hollow Sphere and 1D Structural Materials by Sol-Gel Process

Zhang

2017

Materials

View full text Add to dashboard Cite

The sol-gel method is a simple and facile wet chemical process for fabricating advanced materials with high homogeneity, high purity, and excellent chemical reactivity at a relatively low temperature. By adjusting the processing parameters, the sol-gel technique can be used to prepare hollow sphere and 1D structural materials that exhibit a wide application in the fields of catalyst, drug or gene carriers, photoactive, sensors and Li-ion batteries. This feature article reviewed the development of the preparation of hollow sphere and 1D structural materials using the sol-gel method. The effects of calcination temperature, soaking time, pH value, surfactant, etc., on the preparation of hollow sphere and 1D structural materials were summarized, and their formation mechanisms were generalized. Finally, possible future research directions of the sol-gel technique were outlined.

show abstract

Optical characterization of sol–gel ZnO:Al thin films

Cited by 24 publications

References 41 publications

SÍNTESE DE Nb2O5, Al2O3 E Nb2O5/Al2O3 VIA MÉTODO DE PECHINI COMO PRÉ-TRATAMENTO ALTERNATIVO PARA ESQUEMAS DE PINTURA DO AÇO CARBONO AISI 1005

SÍNTESE DE Nb2O5, Al2O3 E Nb2O5/Al2O3 VIA MÉTODO DE PECHINI COMO PRÉ-TRATAMENTO ALTERNATIVO PARA ESQUEMAS DE PINTURA DO AÇO CARBONO AISI 1005

Effect of calcination temperature on phase composition and optical properties of Al-ZnO nanocrystalline films

Synthesis of Hollow Sphere and 1D Structural Materials by Sol-Gel Process

Contact Info

Product

Resources

About