Effect of the seed layer thickness on the stability of ZnO nanorod arrays

İkizler, Berrin; Peker, Sümer

doi:10.1016/j.tsf.2014.03.019

Cited by 46 publications

(25 citation statements)

References 40 publications

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“…6b fibres after plasma modification are covered by much more uniform layer of ZnO nanoparticles. This rationalizes the use of plasma treated nonwoven for growing ZnO nanorods on fibres (İkizler and Peker, 2014 Fig. 7.…”

Section: Methodssupporting

confidence: 62%

Polypropylene – zinc oxide nanorod hybrid material for applications in separation processes

Jakubiak¹,

Tomaszewska²,

Jackiewicz³

et al. 2016

Chemical and Process Engineering

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Hybrid filter material was obtained via modification of polypropylene (PP) nonwoven with nanosize zinc oxide particles of a high aspect ratio. Modification was conducted as a three-step process, a variant of hydrothermal method used for synthesis of nano-ZnO, adopted for coating three dimensional polymeric nonwoven filters. The process consisted of plasma treatment of nonwoven to increase its wettability, deposition of ZnO nanoparticles and low temperature hydrothermal growth of ZnO rods. The modified nonwovens were investigated by a high resolution scanning electron microscopy (HR-SEM). It has been found that the obtained hybrid filters offer a higher filtration efficiency, in particular for so called most penetrating particle sizes.

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Section: Methodssupporting

confidence: 62%

Polypropylene – zinc oxide nanorod hybrid material for applications in separation processes

Jakubiak¹,

Tomaszewska²,

Jackiewicz³

et al. 2016

Chemical and Process Engineering

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“…According to the previous literature, the yellow emission is usually contributed by oxygen-related-defects such as oxygen vacancy and oxygen interstitials [17,18]. Moreover, the Yellow emission can be attributed to the existence of hydroxyl group (−OH) or Zn (OH) 2 on the surface of YZO nanorods [19][20][21]. So, it is believed that the emission of yellow band may arise due to the oxygen-related-defects as well the presence of hydroxyl ions on the surface of YZO nanorods.…”

Section: Resultsmentioning

confidence: 95%

Realization of High Aspect Ratio and Surface Defects in YZO Nanorods via Controlling Seed Layer Thickness

Kaur¹,

Lee²,

Kim³

2018

International Conference of Theoretical and Applied Nanoscience and Nanotechnology

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High-aspect-ratio Y-doped ZnO (YZO) nanorods were grown vertically on YZO-seeded Si substrates by using a hydrothermal method. The aspect ratios of YZO nanorods were altered by controlling the thicknesses of as-grown and 600 ºC-annealed YZO seed layers. The highest aspect ratio of YZO nanorods was observed to be ~ 49.3 by controlling the growth and in-situ etching process of 600 ºC-annealed YZO seed layers. Well-aligned YZO nanorods showed a single crystalline behavior corresponding to the preferential (002) orientation of the hexagonal wurtzite structure. PL and XPS results revealed that the surface defects were significantly increased with an increase of aspect ratio of YZO nanorods grown on the thicker as-grown and 600 ºC-annealed seed layers.

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“…The production of ZnO nanorods by solution methods (hydrothermal, spray pyrolysis, sol-gel, wet chemical, etc.) often requires the use of a seed layer [34][35][36]. The characteristics of the seed layer determine the growth and alignment of the nanorods.…”

Section: Resultsmentioning

confidence: 99%

Sprayed Pyrolyzed ZnO Films with Nanoflake and Nanorod Morphologies and Their Photocatalytic Activity

Portillo-Vélez

Bizarro

2016

Journal of Nanomaterials

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There is an increasing interest on the application of ZnO nanorods in photocatalysis and many growth methods have been applied, in particular the spray pyrolysis technique which is attractive for large scale production. However it is interesting to know if the nanorod morphology is the best considering its photocatalytic activity, stability, and cost effectiveness compared to a nonoriented growth. In this work we present a systematic study of the effect of the precursor solution (type of salt, solvent, and concentration) on the morphology of sprayed ZnO films to obtain nanoflakes and nanorods without the use of surfactants or catalysts. The surface properties and structural characteristics of these types of films were investigated to elucidate which morphology is more favorable for photocatalytic applications. Wettability and photocatalytic experiments were carried out in the same conditions. After UV irradiation both morphologies became hydrophilic and achieved a dye discoloration efficiency higher than 90%; however, the nanoflake morphology provided the highest photocatalytic performance (99% dye discoloration) and stability and the lowest energy consumption during the synthesis process. The surface-to-volume ratio revealed that the nanoflake morphology is more adequate for photocatalytic water treatment applications and that the thin nanorods should be preferred over the large ones.

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Effect of the seed layer thickness on the stability of ZnO nanorod arrays

Cited by 46 publications

References 40 publications

Polypropylene – zinc oxide nanorod hybrid material for applications in separation processes

Polypropylene – zinc oxide nanorod hybrid material for applications in separation processes

Realization of High Aspect Ratio and Surface Defects in YZO Nanorods via Controlling Seed Layer Thickness

Sprayed Pyrolyzed ZnO Films with Nanoflake and Nanorod Morphologies and Their Photocatalytic Activity

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