Stable superhydrophobic Zn/ZnO surfaces fabricated via electrodeposition on tin substrate for self-cleaning behavior and switchable wettability

He, Gang; Lü, Shixiang; Xu, Wei; Ye, Ping; Liu, Guoxiao; Wang, Hongtao; Dai, Tanlong

doi:10.1016/j.jallcom.2018.03.108

Cited by 55 publications

(18 citation statements)

References 43 publications

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“…Self-cleaning can be the native property of a surface and/or can be introduced using different coatings. There are two major categories of selfcleaning surfaces: hydrophobic (Varshney and Mohapatra 2018;Yu et al 2018;He et al 2018) and hydrophilic (Prince et al 2014). In the case of hydrophobic self-cleaning surfaces the repelling of water from a substrate causes the rolling of a droplet across a surface and the dirt is carried away with the droplet.…”

Section: Introductionmentioning

confidence: 99%

Testing the self-cleaning properties of a coordination polymer surface

et al. 2018

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It is well established that self-cleaning can be related to the hydrophobic or hydrophilic nature of a surface. Using adsorption chromatography, molecular simulations and wetting dynamics measurements, the self-cleaning properties of a new, strongly water resistant and hydrophilic cystine-containing coordination polymer (CP) were tested. Adsorption isotherms of n-octane and methanol were determined in the range of 313-343 K. Next the isosteric enthalpy of adsorption and the change in adsorption entropy were calculated to explain higher adsorption of methanol than n-butane. Performed chromatographic tests, molecular dynamics simulations and wetting dynamics experiments additionally prove that the Zn(Cys) 2 CP is a promising material for the application in the preperation of self-cleaning surfaces or coatings.

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Section: Introductionmentioning

confidence: 99%

Testing the self-cleaning properties of a coordination polymer surface

et al. 2018

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“…Various synthetic approaches using different chemical and physical methods [15], such as electro-deposition [16][17][18], sol-gel [19], and hydrothermal [14,20,21] have been employed to fabricate several types of ZnO nano-and microstructures including nanorods [16,22,23], nanowires [20,24], and micro- [14,21,25] and nano-spheres [26]. Nevertheless, the fabrication of well-defined micrometer-sized particles is still challenging.…”

Section: Introductionmentioning

confidence: 99%

Rhodamine B Doped ZnO Monodisperse Microcapsules: Droplet-Based Synthesis, Dynamics and Self-Organization of ZnO Nanoparticles and Dye Molecules

et al. 2020

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In the present work, droplet-based microfluidics and sol-gel techniques were combined to synthesize highly monodisperse zinc oxide (ZnO) microspheres, which can be doped easily and precisely with dyes, such as rhodamine B (RhB), and whose size can be finely tuned in the 10–30 μm range. The as-synthesized microparticles were analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and confocal microscopy. The results reveal that the microspheres exhibit an excellent size monodispersity, hollow feature, and a porous shell with a thickness of about 0.6 μm, in good agreement with our calculations. We show in particular by means of fluorescence recovery after photobleaching (FRAP) analysis that the electric charges carried by ZnO nanoparticles primary units play a crucial role not just in the formation and structure of the synthesized ZnO microcapsules, but also in the confinement of dye molecules inside the microcapsules despite a demonstrated porosity of their shell in regards to the solvent (oil). Our results enable also the measurement of the diffusion coefficient of RhB molecules inside the microcapsules (DRhB=3.8×10−8 cm2/s), which is found two order of magnitude smaller than the literature value. We attribute such feature to a strong interaction between dye molecules and the electrical charges carried by ZnO nanoparticles. These results are important for potential applications in micro-thermometry (as shown recently in our previous study), photovoltaics, or photonics such as whispering gallery mode resonances.

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“…Superhydrophobic surfaces were rst observed in the natural environment, such as lotus leaves, 1,2 rose petals, 3,4 buttery wings, 5,6 rice leaves, 7,8 leech legs, 9,10 cicada wings, 11,12 moth wings, 13,14 gecko feet, 15,16 and bird wings. 17 The magical effects of superhydrophobic surfaces in the nature have gained great interest of many researchers, and with the development of technology, these functions of superhydrophobic surfaces have been gradually applied in a number of elds including surface self-cleaning, 18,19 anti-icing, 20,21 corrosion resistance, 22,23 antifog, 24 drag reduction, 25,26 oil-water separation, [27][28][29] and biomedicine. 30,31 At present, numerous articial superhydrophobic surfaces are developed.…”

Section: Introductionmentioning

confidence: 99%