Effects of seed layers on controlling of the morphology of ZnO nanostructures and superhydrophobicity of ZnO nanostructure/stearic acid composite films

Zhang, Jing; Liu, Zhihua; Liu, Junqi; E, Lei; Liu, Zhifeng

doi:10.1016/j.matchemphys.2016.08.031

Cited by 26 publications

(8 citation statements)

References 48 publications

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“…To obtain the structured Cu meshes with low surface energies, stearic acid was introduced. The hydrophobic hydrocarbon chains of the stearic acid were coated onto the surface of the Cu mesh because the carboxylic acid groups of the stearic acid reacted with the hydroxyl groups of the Cu mesh. , After the stearic acid coating was applied, the sizes of the bumpy particles observed in the BL structures slightly increased; however, the bumpy surface morphology was maintained (Figure c). The WCA of the BL-Cu mesh promptly increased and then reached a steady-state value of 147° (inset of Figure c).…”

Section: Resultsmentioning

confidence: 99%

Surface Design of Separators for Oil/Water Separation with High Separation Capacity and Mechanical Stability

et al. 2017

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A convection heat treatment that can replace existing chemical oxidation methods was developed for the preparation of hierarchically oxidized Cu meshes with various surface morphologies, representing a very simple and green route that does not involve toxic chemicals. Three types of Cu meshes [bumpy-like (BL) and short and long needle-like (NL) structures] exhibited similar separation efficiencies of 95-99% over 20 separation cycles, as indicated by their similar water contact angles (WCAs; 147-150°). However, these Cu meshes exhibited different flux behaviors. Excessively rough and excessively smooth surfaces of the Cu mesh resulted in increased resistance to flow and to a decrease of the penetration of oil. A surface with intermediate smoothness, such as the BL-Cu mesh, was necessary for high flux over a broad range of oil viscosities. Furthermore, a less rough surface was more suitable for the separation of highly viscous oil. Computational fluid dynamics (CFD) simulations were carried out to support our experimental results. The BL-Cu meshes also showed outstanding mechanical stability because of their low resistance to the flow of fluids.

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Section: Resultsmentioning

confidence: 99%

Surface Design of Separators for Oil/Water Separation with High Separation Capacity and Mechanical Stability

et al. 2017

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“…65 We have introduced polyethylene glycol (PEG) and cetyltrimethyl ammonium bromide (CTAB) into the synthesis process for modifying the morphology of ZnO nanorods, thus obtaining ZnO nanobundles and nanocarpets. 66 Some methods of crystallization kinetics modulation are summarized in Table 2.…”

Section: Morphology and Architecture Manipulationmentioning

confidence: 99%

“…Segawa et al have fabricated highly oriented ZnO films by chemical solution deposition at low temperatures by controlling the precursor and drying process of the seed layer . We have introduced polyethylene glycol (PEG) and cetyltrimethyl ammonium bromide (CTAB) into the synthesis process for modifying the morphology of ZnO nanorods, thus obtaining ZnO nanobundles and nanocarpets . Some methods of crystallization kinetics modulation are summarized in Table .…”

Section: Optimization and Modulation Strategiesmentioning

confidence: 99%

Optimization and Modulation Strategies of Zinc Oxide-based Photoanodes for Highly Efficient Photoelectrochemical Water Splitting

Han

Liu

2021

ACS Appl. Energy Mater.

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Using hydrogen as an energy source has gained broad interest because of its eco-friendly, renewable, high energy density, and sustainable nature. It is important to note that hydrogen generation by the photoelectrochemical water splitting (PEC-WS) system is demonstrated as an efficient pathway to address the future energy and environmental issues. Playing a critical role in a typical PEC-WS system, transitional metal oxides (such as ZnO, TiO 2 , SnO 2 , etc.) were usually applied as photoanodes in view of their excellent electron mobility, strong stability, and appropriate conduction band position, and so forth. In this review, various optimization and modulation strategies of photoanodes based on ZnO were comprehensively summarized, including morphology and architecture manipulation, crystallization kinetics modulation, doping engineering, other semiconductor coupling, cocatalyst loading, and piezoelectric/ferroelectric/pyroelectric effect integrating, metallic nanoparticle incorporation. Furthermore, the prospect and outlook of ZnO-based photoanodes and their optimization strategies were also presented. This review also affords a systematic roadmap for other metal oxide optimization and modulation strategies.

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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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Effects of seed layers on controlling of the morphology of ZnO nanostructures and superhydrophobicity of ZnO nanostructure/stearic acid composite films

Cited by 26 publications

References 48 publications

Surface Design of Separators for Oil/Water Separation with High Separation Capacity and Mechanical Stability

Surface Design of Separators for Oil/Water Separation with High Separation Capacity and Mechanical Stability

Optimization and Modulation Strategies of Zinc Oxide-based Photoanodes for Highly Efficient Photoelectrochemical Water Splitting

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

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