3-D Morphological Analysis of Carbon-Nickel Nanocomposite Thin Films

Ţălu, Ştefan; Rąplewicz, Alicja; Stach, Sebastian; Ţălu, Mihai; Vintilă, Daniela

doi:10.4028/www.scientific.net/amm.896.311

Cited by 3 publications

(4 citation statements)

References 26 publications

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“…5, which might be connected to the surface's inhomogeneity 66 . When the aspect ratio of the texture Str is almost 0, the surface is anisotropic; when Str is nearly 1, the surface is isotropic 68 . In this study, Str before and after adsorption was 0.718 and 0.044, respectively, indicating that the Zn-Mg-Al/LDH surface texture is isotropic.…”

Section: General Surface Analysismentioning

confidence: 99%

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Textural properties and adsorption behavior of Zn–Mg–Al layered double hydroxide upon crystal violet dye removal as a low cost, effective, and recyclable adsorbent

Abdel-Hady

Mohamed

Hafez

et al. 2023

Sci Rep

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The preparation of adsorbents plays a vital role in the adsorption method. In particular, many adsorbents with high specific surface areas and unique shapes are essential for the adsorption strategy. A Zn–Mg–Al/layer double hydroxide (LDH) was designed in this study using a simple co-precipitation process. Adsorbent based on Zn–Mg–Al/LDH was used to remove crystal violet (CV) from the wastewater. The impacts of the initial dye concentration, pH, and temperature on CV adsorption performance were systematically examined. The adsorbents were analyzed both before and after adsorption using FTIR, XRD, and SEM. The roughness parameters and surface morphologies of the produced LDH were estimated using 3D SEM images. Under the best conditions (dose of adsorbent = 0.07 g and pH = 9), the maximum adsorption capacity has been achieved. Adsorption kinetics studies revealed that the reaction that led to the adsorption of CV dye onto Zn–Mg–Al/LDH was a pseudo-second-order model. Additionally, intraparticle diffusion suggests that Zn–Mg–Al/LDH has a fast diffusion constant for CV molecules (0.251 mg/(g min1/2)). Furthermore, as predicted by the Langmuir model, the maximal Zn–Mg–Al/LDH adsorption capacity of CV was 64.80 mg/g. The CV dimensionless separation factor (RL) onto Zn–Mg–Al/LDH was 0.769, indicating that adsorption was favorable. The effect of temperature was performed at 25, 35, and 45 °C in order to establish the thermodynamic parameters ∆Ho, ∆So, and ∆Go. The computed values indicated exothermic and spontaneous adsorption processes. The study presented here might be used to develop new adsorbents with enhanced adsorption capabilities for the purpose of protecting the water environment.

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Section: General Surface Analysismentioning

confidence: 99%

“…The roughness kurtosis Rku is applied to calculate the distribution of the peaks above and below the mean plane. For spiky surfaces, Rku > 3; for bumpy surfaces, Rku < 3; perfectly random surfaces have kurtosis = 3 68 . Zn-Mg-Al/LDH has the Rku of 2.740, demonstrating that the surface of Zn-Mg-Al/LDH is a bumpy surface.…”

Section: General Surface Analysismentioning

confidence: 99%

Textural properties and adsorption behavior of Zn–Mg–Al layered double hydroxide upon crystal violet dye removal as a low cost, effective, and recyclable adsorbent

Abdel-Hady

Mohamed

Hafez

et al. 2023

Sci Rep

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show abstract

“…The Sdr (developed interfacial area ratio) parameter, which is used as a measure of spatial complexity, shows that the PVA_WHT sample is the least flat, followed by PVA_AHT. Talu et al states that a complex surface will have a high Sdr and for a flat surface, Sdr approaches 0% [43].…”

Section: Stereometric Evaluationmentioning

confidence: 99%

Investigating surface and wettability properties of Na₂Ti₃O₇/Na₂Ti₆O₁₃/PVA composites

Aguilera Dominguez,

Pereira da Silva,

Ramos

et al. 2023

Surf. Topogr.: Metrol. Prop.

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Ceramics-polymer composites have garnered significant interest in recent years due to their unique combination of properties and potential applications. This study presents an in-depth analysis of the surface and wettability properties of new Na2Ti3O7/Na2Ti6O13/PVA composite, aiming to uncover their unique characteristics. The analysis revealed notable changes in the morphology and 3D spatial patterns of the films upon incorporating heated and unheated Na2Ti3O7/Na2Ti6O13 into the PVA matrix. The PVA film containing heated ceramics displayed hierarchical topographic roughness (3.71±1.13 nm) similar to those of pure PVA films (2.28±0.13 nm), contrasting with the film containing unheated ceramics (12.31±2 nm). The surface texture of all films exhibited comparable isotropies (without significant difference at a p-value=0.05), indicating that their physical properties remained largely unaffected by the heat treatment imposed on the ceramics. The surface microtexture similarity between the PVA film and the one containing heated ceramics can be attributed to their comparable spatial complexity (FD=2.41‒2.44). Contact angle measurements further demonstrated similar surface wettability between pure PVA (54.5±1.4°) and PVA containing heated Na2Ti3O7/Na2Ti6O13 ceramics (58.6±2.6°), which can be attributed to the resemblances in their surface microtextures. These findings highlight the pivotal role of heat treatment in the formation of Na2Ti3O7/Na2Ti6O13/PVA composites with surface and wettability properties akin to those of pure PVA films. This research contributes to the understanding of composite materials and their potential for various applications, including anticorrosive coatings, sensor devices, and surface engineering.

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“…The same behavior was recorded for the developed interfacial area ratio (Sdr), where GdMnO850 presented a greater value in relation to GdMnO650 and GdMnO750. A full flat surface is assigned to Sdq of ~0 [55] and therefore GdMnO850 is less flat, which is naturally due to its greater topographic irregularity (greater spatial complexity).…”

Section: Advanced Stereometric Evaluationmentioning

confidence: 99%

Fractal-Stereometric Correlation of Nanoscale Spatial Patterns of GdMnO3 Thin Films Deposited by Spin Coating

et al. 2021

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Multiferroic systems are of great interest for technological applications. To improve the fabrication of thin films, stereometric and fractal analysis of surface morphology have been extensively performed to understand the influence of physical parameters on the quality of spatial patterns. In this work, GaMnO3 was synthesized and thin films were deposited on Pt(111)/TiO2/SiO2/Si substrates using a spin coating apparatus to study the correlation between their stereometric and fractal parameters. All films were studied by X-ray diffraction (XRD), where the structure and microstructure of the film sintered at 850 °C was investigated by Rietveld refinement. Topographic maps of the films were obtained using an atomic force microscope (AFM) in tapping mode. The results show that the film sintered at 850 °C exhibited a clear formation of a GdMnO3 orthorhombic structure with crystallite size of ~14 nm and a microstrain higher than other values reported in the literature. Its surface morphology presented a rougher topography, which was confirmed by the height parameters. Topographic differences due to different asymmetries and shapes of the height distributions between the films were observed. Specific stereometric parameters also showed differences in the morphology and microtexture of the films. Qualitative rendering obtained by commercial image processing software revealed substantial differences between the microtextures of the films. Fractal and advanced fractal parameters showed that the film sintered at 850 °C had greater spatial complexity, which was due to their higher topographic roughness, lower surface percolation and greater topographic uniformity, being dominated by low dominant special frequencies. Our combination of stereometric and fractal measurements can be useful to improve the fabrication process by optimizing spatial patterns as a function of the sintering temperature of the film.

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3-D Morphological Analysis of Carbon-Nickel Nanocomposite Thin Films

Cited by 3 publications

References 26 publications

Textural properties and adsorption behavior of Zn–Mg–Al layered double hydroxide upon crystal violet dye removal as a low cost, effective, and recyclable adsorbent

Textural properties and adsorption behavior of Zn–Mg–Al layered double hydroxide upon crystal violet dye removal as a low cost, effective, and recyclable adsorbent

Investigating surface and wettability properties of Na₂Ti₃O₇/Na₂Ti₆O₁₃/PVA composites

Fractal-Stereometric Correlation of Nanoscale Spatial Patterns of GdMnO3 Thin Films Deposited by Spin Coating

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3-D Morphological Analysis of Carbon-Nickel Nanocomposite Thin Films

Cited by 3 publications

References 26 publications

Textural properties and adsorption behavior of Zn–Mg–Al layered double hydroxide upon crystal violet dye removal as a low cost, effective, and recyclable adsorbent

Textural properties and adsorption behavior of Zn–Mg–Al layered double hydroxide upon crystal violet dye removal as a low cost, effective, and recyclable adsorbent

Investigating surface and wettability properties of Na2Ti3O7/Na2Ti6O13/PVA composites

Fractal-Stereometric Correlation of Nanoscale Spatial Patterns of GdMnO3 Thin Films Deposited by Spin Coating

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Investigating surface and wettability properties of Na₂Ti₃O₇/Na₂Ti₆O₁₃/PVA composites