Preparation of thin films comprising palladium nanoparticles by a solid–liquid interface reaction technique

Patil, K.R.; Hwang, Young Kyu; Kim, Minjeong; Chang, Jong‐San; Park, Sang-Eon

doi:10.1016/j.jcis.2004.04.001

Cited by 17 publications

(8 citation statements)

References 55 publications

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“…This process is a chemical method that allows the synthesis of glass, glass/ceramic and ceramic materials at temperatures much lower than other methods like CVD, PVD, or plasma spray and a variety of shapes, such as monoliths or nanospheres, among others, may be obtained [53,79,80]. The sol-gel method (Figure 2) requires the presence in solution of species that undergo polymerization reactions, leading to the formation of a gelatinous network, which can be dried and densified to the required product.…”

Section: Sol-gel Methodsmentioning

confidence: 99%

Coating and Surface Treatments on Orthodontic Metallic Materials

2012

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Metallic biomaterials have been extensively used in orthodontics throughout history. Gold, stainless steel, cobalt-chromium alloys, titanium and its alloys, among other metallic biomaterials, have been part of the orthodontic armamentarium since the twentieth century. Metals and alloys possess outstanding properties and offer numerous possibilities for the fabrication of orthodontic devices such as brackets, wires, bands, ligatures, among others. However, these materials have drawbacks that can present problems for the orthodontist. Poor friction control, allergic reactions, and metal ionic release are some of the most common disadvantages found when using metallic alloys for manufacturing orthodontic appliances. In order to overcome such weaknesses, research has been conducted aiming at different approaches, such as coatings and surface treatments, which have been developed to render these materials more suitable for orthodontic applications. The purpose of this paper is to provide an overview of the coating and surface treatment methods performed on metallic biomaterials used in orthodontics.

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Section: Sol-gel Methodsmentioning

confidence: 99%

Coating and Surface Treatments on Orthodontic Metallic Materials

2012

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“…Such plots have been shown in Figure 3. E g , at various temperature were estimated by extrapolating the linear portion of (αhν) 2 . The optical band gap was shifted toward the lower energy from 4.1 to 3.87 eV as the annealing temperature rose from room temperature to 650˚C.…”

Section: Optical Analysismentioning

confidence: 99%

“…This is due to a rich number of fascinating properties observed in materials containing small submicrometer clusters, which imply promising applications in various areas of nanotechnology [1]. Thin films of metal nanoparticles have been receiving increasing attention because of the optical, electronic, and catalytic properties of such materials [2].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore Pd has remained a focus of the material science community due to its important band gap, conversion efficiency, high absorption coefficient, stability and there exists a vast literature covering theoretical and experimental studies of electronic band structure [4][5][6]. Pd has a wide and direct band gap, n-type semiconducting material and found in crystalline form fcc phase [2]. A number of deposition techniques are being used for the fabrication of Pd thin films including thermal evaporation, chemical bath deposition, vacuum evaporation, chemical vapour deposition, spray pyrolysis, metal organic vapour-phase epitaxy, closed space sublimation, photochemical deposition, radio frequency sputtering, vapour transport deposition electro deposition, screen printing , pulsed laser deposition and couting [7].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Annealing Temperature on the Optical Properties of Palladium Thin Film

Samavat¹,

Mahmoodi²,

Ahmad³

et al. 2012

OJPC

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In this paper, the effect of annealing temperature on the optical properties of palladium thin films has been investigated. The Pd thin films with thickness of about 123 Å were deposited on glass substrates by electron beam coating method. Then the palladium thin films were annealed in air at 350℃, 450℃, 550℃ and 650℃ for 1h and then cold slowly. All the initial Pd films were found to have amorphous structure. Their optical properties were studied as function of annealing temperature using Ultraviolet-Visible (UV-Vis) spectroscopy. The direct band gaps in Pd films have been de- termined. Decreasing the values of the direct band gap shows also increasing the Pd crystallite nanostructure with increasing annealing temperature

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“…It is well known that metal particles of nanometer size have unique characteristics that differ fro m those of individual atoms and bulk materials [1]. Thin films of metal nanoparticles have been receiving increasing attention because of the optical, electronic and catalytic properties of such materials [2,3].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Annealing on the Size and Morphology of Palladium Nanopaticles

Samavat¹,

Ahmad²,

Mahmoodi³

et al. 2012

AJCMP

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Palladiu m(Pd) nanoparticles are produced by variety of methods. In this research, at first Pd nanoparticles were produced by electron beam coating method and then morphology of Pd nanoparticles were studied. Obtained coating can be used as active layer in hydrogen and hydrogen compounds sensors or in hydrogen storage applications. The characterization of the Pd film has been performed by various techniques such as XRD and SEM. The texture and mo rphology of the materials has been investigated by Atomic Force Microscopy(AFM). Results of different analyses on the Pd films show that the increasing of annealing temperature could increase the Pd nanoparticles size.

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Preparation of thin films comprising palladium nanoparticles by a solid–liquid interface reaction technique

Cited by 17 publications

References 55 publications

Coating and Surface Treatments on Orthodontic Metallic Materials

Coating and Surface Treatments on Orthodontic Metallic Materials

Effect of Annealing Temperature on the Optical Properties of Palladium Thin Film

The Effect of Annealing on the Size and Morphology of Palladium Nanopaticles

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