A General Low-Temperature Route for Large-Scale Fabrication of Highly Oriented ZnO Nanorod/Nanotube Arrays

Yu, Hai‐Dong; Zhang, Zhongping; Han, Ming‐Yong; Hao, Xiaotao; Zhu, Furong

doi:10.1021/ja043121y

Cited by 492 publications

(297 citation statements)

References 22 publications

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“…The nanotube wall thickness can be precisely controlled by controlling the electrodeposition time [179]. The nanotube could also be grown on large scale on seeded general substrates [180], with a yield approaching 100% [181].…”

Section: Tubes/ringsmentioning

confidence: 99%

One-dimensional ZnO nanostructures: Solution growth and functional properties

2011

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One-dimensional (1D) ZnO nanostructures have been studied intensively and extensively over the last decade not only for their remarkable chemical and physical properties, but also for their current and future diverse technological applications. This article gives a comprehensive overview of the progress that has been made within the context of 1D ZnO nanostructures synthesized via wet chemical methods. We will cover the synthetic methodologies and corresponding growth mechanisms, different structures, doping and alloying, positioncontrolled growth on substrates, and finally, their functional properties as catalysts, hydrophobic surfaces, sensors, and in nanoelectronic, optical, optoelectronic, and energy harvesting devices.

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Section: Tubes/ringsmentioning

confidence: 99%

One-dimensional ZnO nanostructures: Solution growth and functional properties

2011

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“…Furthermore, ZnO is a material with excellent chemical, thermochemical and mechanical stability, which can be used to absorb ultraviolet light, protecting us against this hazardous radiation. 2 Nanostructured ZnO with as different shapes as one dimensional (1D) nanowires, [3][4][5][6][7] nanotubes, 8,9 nanorods 10 and nanobelts, 11 two dimensional (2D) nanostructures such as nanosheets 12 and nanowalls 13 and some three dimensional (3D) nano/microstructures such as nanoflower and tetrapod like structures, [14][15][16][17] have been fabricated by means of various methods. Thus, the fabrication methods of ZnO nanomaterials can be classified into two categories: (i) vapor phase processes and (ii) solution phase routes.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of brush-like ZnO nanorods using albumen as biotemplate

Nouroozi¹,

Farzaneh²

2011

J. Braz. Chem. Soc.

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Nanobastões de ZnO com morfologia similar à de escovas, estrutura cristalina do tipo wurtzita (hexagonal), diâmetro médio de 90 nm e comprimento ≥1 μm, foram preparados por calcinação (700 ° C) do material híbrido (Zn(II)/albumina) obtido pelo método sol-gel reagindo-se acetato de zinco e clara de ovo, em meio aquoso. O material foi caracterizado por difratometria de raio-X de pó (XRD), microscopia eletrônica de varredura (MEV) e de transmissão (TEM), análise termogravimétrica (TGA/DTA), e espectroscopia FT-IR e de fotoluminescência (PL). A área superficial foi determinada como sendo igual a 6,91 m 2 g -1 pelo método BET. Os eventos térmicos no TGA/DTA foram consistentes com a decomposição da albumina a 300 °C e a formação final de ZnO em 578,5 °C. Os resultados mostraram que a albumina desempenha papel essencial na formação dos nanobastões de ZnO, atuando como molde.Crystalline ZnO nanorods with wurtzite-like structure and average diameter of 90 nm and length ≥1 μm, was prepared by calcination (700 °C) of a Zn(II)/albumen hybrid obtained by solgel method, by the reaction of Zn(II) acetate and egg white (albumen), in aqueous solution. The material was characterized by powder X-ray diffraction (XRD), scanning electron (SEM) and transmission electron microscopy (TEM), thermogravimetric analysis (TGA/DTA), N 2 adsorption/ desorption (BET method), FT-IR and photoluminescence (PL) spectroscopy. The surface area was determined to be 6.91 m 2 g -1 by BET method. The TGA/DTA thermal events were consistent with the decomposition of albumen at 300 °C and final formation of ZnO at 578.5 °C. The results showed that albumen act as template playing essential role on defining the formation of ZnO nanorods with brush-like morphology.Keywords: brush-like ZnO nanorods, sol-gel method, egg white (albumen) IntroductionIn recent years, there have been many reports on novel preparation and characterization methods of nanomaterials, based on metal oxide semiconductors in general and ZnO in particular, owing to their special properties. 1 ZnO nanoparticles, with a wide band gap has found to be an efficient candidate for utilization in optical devices operating at room temperature, because of their catalytic/photocatalytic activity and use as CO gas sensor. Furthermore, ZnO is a material with excellent chemical, thermochemical and mechanical stability, which can be used to absorb ultraviolet light, protecting us against this hazardous radiation. 2 Nanostructured ZnO with as different shapes as one dimensional (1D) nanowires, 3-7 nanotubes, 8,9 nanorods 10 and nanobelts, 11 two dimensional (2D) nanostructures such as nanosheets 12 and nanowalls 13 and some three dimensional (3D) nano/microstructures such as nanoflower and tetrapod like structures, [14][15][16][17] have been fabricated by means of various methods. Thus, the fabrication methods of ZnO nanomaterials can be classified into two categories: (i) vapor phase processes and (ii) solution phase routes. [18][19][20][21][22][23] Recently, solution phase routes including microemuls...

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“…Among various 1D nanostructural materials, Zinc oxide (ZnO) has generated great interests due to its direct wide band gap of 3.37eV at room temperature, large exciton binding energy of 60meV, and stable physical and chemical properties. Until now, different fabrication methods, such as vapor-phase transport [7][8][9], pulsed laser deposition [10], chemical vapor deposition [11,12] and electrochemical deposition [13], have been widely reported for the preparation of 1-D ZnO nanorods. According to these methods, the complex processes, sophisticated equipment and high temperatures are usually required.…”

Section: Introductionmentioning

confidence: 99%

Effective way to control the size of well-aligned ZnO nanorod arrays with two-step chemical bath deposition

Yang

Zhao

Willander

et al. 2009

Journal of Crystal Growth

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The diameter of well-aligned ZnO nanorod arrays (ZNAs) grown on Si substrates has been well controlled from 150nm to 40nm by two-step chemical bath deposition method (CBD), i.e. substrate pretreatment with spin coating to form ZnO nanoparticles seed layer and CBD growth. The effects of ZnO nanoparticles density and diameter on size and alignment of ZNAs were investigated in detail by atomic force microscope (AFM), X-ray diffraction (XRD), scan electronic microscope (SEM), transmission electron microscope (TEM) and photoluminescence (PL). The results indicate that both diameter and density of ZnO nanoparticles which were pre-coated on the substrates will influence the size and alignment of ZNAs, but the density will play a key role to determine the diameter of ZNAs when the density is higher than the value of 2.3×10 8 cm -2 . Moreover, only a strong UV peak at 385 nm appears in room temperature PL spectrum for these samples, which indicates that as-synthesized ZnO nanorods have a perfect crystallization and low density of deep level defects.

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A General Low-Temperature Route for Large-Scale Fabrication of Highly Oriented ZnO Nanorod/Nanotube Arrays

Abstract: Large-scale arrays of highly oriented hexagonal ZnO nanorods and nanotubes were fabricated on arbitrary ZnO-film-coated substrates using a low-temperature chemical-liquid-phase deposition method. The obtained nanoproducts were characterized, and the growth mechanism is proposed.

Cited by 492 publications

References 22 publications

One-dimensional ZnO nanostructures: Solution growth and functional properties

One-dimensional ZnO nanostructures: Solution growth and functional properties

Synthesis and characterization of brush-like ZnO nanorods using albumen as biotemplate

Effective way to control the size of well-aligned ZnO nanorod arrays with two-step chemical bath deposition

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