Wettability properties vary with different morphologies of ZnO nanoparticles deposited on glass and modified by stearic acid

Rezayi, Toktam; Entezari, Mohammad Hassan

doi:10.1039/c5nj02333e

Cited by 25 publications

(6 citation statements)

References 36 publications

(40 reference statements)

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“…Tuning surface wettability can be achieved by modifying surface energy or morphology [12]. For instance, in optoelectronic applications, the self-cleaning properties of semiconductor metal oxide thin films with different morphologies have been a subject of focus [10].…”

Section: Introductionmentioning

confidence: 99%

Surface Wettability of ZnO Thin Films

Hamid

Ma’amor

Hoong

2022

MNIJ

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In this study, zinc oxide (ZnO) structured films were grown on glass substrates using a simple chemical bath deposition (CBD) method with different salt precursors. The variation of salt precursors towards the surface morphology of thin films and its wettability properties were investigated. Four types of zinc (Zn) salt used as precursors are zinc chloride (ZnCl2), zinc acetate (ZnAc2), zinc nitrate (Zn(NO3)2) and zinc sulfate (ZnSO4). The crystallinity of ZnO thin films was evaluated using X-ray diffraction (XRD), and the surface morphology was observed using field emission scanning microscopy (FESEM). Finally, the wettability was determined by contact angle (CA) measurement. It was found that ZnCl2 has the lowest CA (127.1°), while ZnSO4 exhibits the highest CA (142.3°). The Zn salts used significantly influenced the thin film surface morphology, resulting in varied wetting behaviour depending on the surface roughness.

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Section: Introductionmentioning

confidence: 99%

Surface Wettability of ZnO Thin Films

Hamid

Ma’amor

Hoong

2022

MNIJ

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“…ZnO is largely used as an additive in rubbers, plastics, ceramics, glasses and pigments, and is one of the most relevant semiconducting material due to its optical and electrical properties [21]. Many studies are reported in the literature concerning the use of ZnO in the preparation of superhydrophobic rigid surfaces, some of which involved the chemical treatment with stearic acid (Figures S1 and S2) [22,23,24,25,26,27]. Lee et al reported on a facile approach for the fabrication of a superhydrophobicnanocoatings on different substrates (both rigid as silicon and flexible as polyethylene terephthalate (PET)) through a simple but long-lasting procedure based on the spin-coating deposition of a series of layers of ZnONPs, each subjected to a chemical modification step with stearic acid [20].…”

Section: Introductionmentioning

confidence: 99%

Sustainable, Fluorine-Free, Low Cost and Easily Processable Materials for Hydrophobic Coatings on Flexible Plastic Substrates

et al. 2019

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Zinc oxide nanoparticles (ZnONPs) and stearic acid are herein used for the preparation of hydrophobic coatings with good moisture barrier property on flexible plastic substrates. Fast, high throughput, mild and easy-to-run processing techniques, like airbrushing and gravure printing, are applied for thin films deposition of these materials. The results of this study indicated that the best hydrophobic coating in terms of water contact angle (115°) is obtained through a two-steps printing deposition of a ZnONPs layer followed by a stearic acid layer. All the deposition procedures proved to be effective in terms of water vapor barrier properties, reaching values of 0.89 g/m2/day, with a 45% reduction with respect to the bare substrate. These preliminary data are very encouraging in the perspective of a low cost and green approach for the realization of functional coatings for packaging applications.

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“…To achieve this objective, a rough surface structure is constructed and treated with a low surface energy material. In this process, the construction of an appropriately rough surface structure is crucial [5][6][7][8] . A rough copper surface can be obtained by several methods such as chemical oxidation 9,10) , chemical etching 11,12) , physical etching 13) , physical and chemical lm deposition 14) , and hydrothermal synthesis 15) .…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Cu Surface with the Hierarchical Structure of a Lotus Leaf via Electroplating and Its Superhydrophobicity

et al. 2017

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A lotus leaf exhibits excellent superhydrophobic properties because of its hierarchical microstructure and a waxy hydrophobic material covering its surface. Herein, the lotus leaf was used as a template and a copper surface layer with a microstructure similar to the lotus leaf was prepared by electroplating. Experimental results show that the plating samples saved micron-sized structure of the lotus leaf, such as papillae. At the same time, owing to the speci city of the electroplating method, smaller grains were formed as the second-level structure on the papillae, forming a hierarchical structure that makes it possible to obtain a superhydrophobic surface. The plated copper surface exhibited excellent hydrophobic properties with a contact angle of 160 , which is higher than that of the lotus leaf (157 ) and also much higher than that of smooth copper covered with an identical uroalkyl silane (112 ). This affords a novel idea for preparing of superhydrophobic surfaces.

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Wettability properties vary with different morphologies of ZnO nanoparticles deposited on glass and modified by stearic acid

Abstract: In the present study, variations in morphology and surface wettability are accomplished using different zinc sources for the deposition of zinc oxide (ZnO) nanoparticles on a glass surface.

Cited by 25 publications

References 36 publications

Surface Wettability of ZnO Thin Films

Surface Wettability of ZnO Thin Films

Sustainable, Fluorine-Free, Low Cost and Easily Processable Materials for Hydrophobic Coatings on Flexible Plastic Substrates

Preparation of a Cu Surface with the Hierarchical Structure of a Lotus Leaf via Electroplating and Its Superhydrophobicity

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