Biomimetic ZnO plate twin-crystals periodical arrays

Tseng, Yao‐Hung; Liu, Ming-Han; Kuo, Yu-Wei; Chen, Peilin; Chen, Chiang-Ting; Chen, Yang‐Fang; Mou, Chung‐Yuan

doi:10.1039/c2cc16119b

Cited by 15 publications

(19 citation statements)

References 28 publications

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“…[11] They further showed that the ZnO hexagons can be deposited on a surface-patterned substrate in an orientated fashion. [12] Greer et al studied in great detail the formation mechanism of the twin-plate mesocrystals. [13] Because of the high surface area and surface selection, mesocrystalline forms of ZnO would be highly interesting as catalyst supports in view of the fact that ZnO is also active in CO 2 activation [14] and CO hydrogenation.…”

Section: Introductionmentioning

confidence: 99%

Dipole Field Guided Orientated Attachment of Nanocrystals to Twin‐Brush ZnO Mesocrystals

Liu

Tseng

Greer

et al. 2012

Chemistry A European J

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Mesocrystals of ZnO were synthesized hydrothermally by using gum arabic as a structure-directing agent. Their hierarchical structure has a unique twin-brush form consisting of vertically aligned nanorods in a single-crystal-like porous form. The formation mechanism of the twin-brush ZnO was investigated by quenching a series of samples at different times and examining them by TEM, SEM, and XRD. The alignment of ZnO crystal units can be modulated by adding simple salts such as KCl to change the units from nanorods to nanoplates. This can be explained by screening the dipolar force of the polar crystal. Local cathodoluminescence of twin-brush ZnO was used to follow the local structure changes.

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Section: Introductionmentioning

confidence: 99%

Dipole Field Guided Orientated Attachment of Nanocrystals to Twin‐Brush ZnO Mesocrystals

Liu

Tseng

Greer

et al. 2012

Chemistry A European J

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“…The detailed growth mechanism of twin‐plate‐shaped zinc oxide has been discussed in Refs. , while the respective mechanism for growth of spherical particles is described in Refs. .…”

Section: Resultsmentioning

confidence: 99%

“…The properties of micro‐ and nanostructured zinc oxide can be affected via control of size and shape . Therefore, a variety of different crystal shapes has been synthesized, ranging from rods/tubes , belts , spheres , to more complex ones like urchins , flowers , twin‐plates , and pine trees .…”

Section: Introductionmentioning

confidence: 99%

Study of polymer coating delamination kinetics on zinc modified with zinc oxide of different morphologies

Iqbal

Moirangthem

Bashir

et al. 2014

Materials and Corrosion

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Industrially prepared materials surfaces often possess complex morphologies and topographies. Using rough model interfaces, the effect of the surface morphology on the delamination of a polymer coating from zinc surfaces is investigated in this work. Zinc oxide particles of different shapes with characteristic dimensions $1 µm were deposited on zinc surfaces to serve as model corrosion products with well-defined morphologies. Surfaces with spherical, rod-shaped, and twin-plateshaped zinc oxide particles were prepared and characterized by scanning electron microscopy (SEM) as well as X-ray diffraction (XRD). The surfaces were subsequently coated with poly(vinyl butyral) (PVB) as a model for a weakly bound polymer coating. Scanning Kelvin probe (SKP) measurements were carried out in humid air to study the delamination kinetics. Results were compared to PVB on zinc. While delamination is fastest on zinc without zinc oxide particles, the delamination rate on the particle-covered surfaces strongly depends on the particle morphology. Delamination rate increases in the order sphere < rod < twin-plate, with differences by one order of magnitude between fastest and slowest. The differences in delamination rate can be understood based on the surface energies of the terminating surfaces of the particles, and the resulting differences in stability under conditions of zinc oxide dissolution.

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“…[4][5][6][7][8][9][10][11] In the third group are natural organic compounds, for example biopolymers. [12][13][14][15][16][17] Spherical ZnO nanoparticles of narrow size distribution were synthesized in the presence of carboxylic curdlan (Cc), a versitale β-1,3-polyglucuronic acid derivative. The obtained Cc-ZnO nanoparticles showed a good ability of binding proteins.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Gum Arabic on the Nano / Microstructure and Optical Properties of Precipitated ZnO

Petrović¹,

Ristić²,

Musić³

et al. 2017

Croat. Chem. Acta

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The development of the nano/microstructure of ZnO particles precipitated from zinc acetylacetonate showed dependence on the presence of gum arabic. In the absence of gum arabic in near-neutral pH range ZnO rods, some of them hollow, precipitated, whereas in alkaline (NH4OH) medium the multipods (stars) were obtained. A strong effect of gum arabic was noticed both in the near-neutral pH range and in alkaline (NH4OH) medium. In both cases ZnO particles consisted of 1D subunits. The FT-IR spectra of ZnO particles precipitated in the presence of gum arabic showed the IR bands due to the residual content of this biopolymer. Gum arabic formed the corona on ZnO particles and played a key role in the precipitation process from nucleation to the final ZnO product. UV/Vis spectra were also recorded. The PL spectra of ZnO powders dispersed in pure ethanol were very similar. In the presence of ethanol characteristic peaks in the blue emission region were diminishing, thus softening the intrinsic defects responsible for this emission. It was assumed that this effect was due to the covering of oxygen vacancies (VO) at the interface ZnO/C2H5OH with the oxygen atoms present in ethanol.

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Biomimetic ZnO plate twin-crystals periodical arrays

Cited by 15 publications

References 28 publications

Dipole Field Guided Orientated Attachment of Nanocrystals to Twin‐Brush ZnO Mesocrystals

Dipole Field Guided Orientated Attachment of Nanocrystals to Twin‐Brush ZnO Mesocrystals

Study of polymer coating delamination kinetics on zinc modified with zinc oxide of different morphologies

The Effect of Gum Arabic on the Nano / Microstructure and Optical Properties of Precipitated ZnO

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