Microstructure development in zinc oxide nanowires and iron oxohydroxide nanotubes by cathodic electrodeposition in nanopores

Maas, M.G.; Rodijk, E.J.B.; Maijenburg, A. Wouter; Blank, Dave H.A.; Elshof, Johan E. ten

doi:10.1557/jmr.2011.93

Cited by 16 publications

(20 citation statements)

References 33 publications

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“…With a spin-casting technique and AAO as the template, polymer nanotubes of either polystyrene or poly(methyl methacrylate) or both could be produced after removal of the AAO template with 1 M NaOH [156]. Using AAO or PCTE membranes, several metal oxide nanotubes can be produced, including TiO 2 [157], ZnO, FeO(OH) [158], WO 3 [159] Co [160].…”

Section: Nanotubesmentioning

confidence: 99%

Template-based syntheses for shape controlled nanostructures

Pérez-Page

et al. 2016

Advances in Colloid and Interface Science

137

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A variety of nanostructured materials are produced through template-based synthesis methods, including zerodimensional, one-dimensional, and two-dimensional structures. These span different forms such as nanoparticles, nanowires, nanotubes, nanoflakes, and nanosheets. Many physical characteristics of these materials such as the shape and size can be finely controlled through template selection and as a result, their properties as well. Reviewed here are several examples of these nanomaterials, with emphasis specifically on the templates and synthesis routes used to produce the final nanostructures. In the first section, the templates have been discussed while in the second section, their corresponding synthesis methods have been briefly reviewed, and lastly in the third section, applications of the materials themselves are highlighted. Some examples of the templates frequently encountered are organic structure directing agents, surfactants, polymers, carbon frameworks, colloidal sol-gels, inorganic frameworks, and nanoporous membranes. Synthesis methods that adopt these templates include emulsion-based routes and template-filling approaches, such as self-assembly, electrodeposition, electroless deposition, vapor deposition, and other methods including layer-by-layer and lithography. Templatebased synthesized nanomaterials are frequently encountered in select fields such as solar energy, thermoelectric materials, catalysis, biomedical applications, and magnetowetting of surfaces.

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Section: Nanotubesmentioning

confidence: 99%

Template-based syntheses for shape controlled nanostructures

Pérez-Page

et al. 2016

Advances in Colloid and Interface Science

137

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“…The ECD of ZnO nanowires in polymer etched ion‐track templates has been reported by several authors employing various electrolytes . Though, there are only a few studies devoted to the precipitation of ZnO nanocrystals in SiO 2 /Si track templates.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO Nanocrystals in SiO₂/Si Track Template: Effect of Electrodeposition Parameters on Structure

Dauletbekova

Власукова

Baimukhanov

et al. 2019

Physica Status Solidi (b)

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This paper presents a study of nanoclusters obtained by electrochemical deposition (ECD) of zinc in the a‐SiO2/Si‐n track template. The nanoporous SiO2 layer on Si substrate (track template) has been created by irradiation with swift Xe ions and further etching in HF solution. The morphology of SiO2/Si‐n track templates and precipitated Zn‐based clusters are examined using a scanning electron microscope JSM 7500F. The crystallographic structure of the Zn‐based precipitates was investigated by means of X‐ray diffraction (XRD). X‐ray analysis is carried out on a D8 ADVANCE ECO X‐ray diffractometer. The Bruker AXSDIFFRAC.EVAv.4.2 software and the international ICDD PDF‐2 database are used to identify the phases and study the crystal structure. From XRD data, it has been found the formation of three crystalline phases of zinc oxide nanocrystals electro‐deposited into SiO2/Si track template: wurtzite, sphalerite, and rock salt structures. Wurtzite is obtained on an amorphous surface of silicon dioxide. Possible mechanisms of ZnO formation instead of metal Zn nanocrystals are discussed.

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“…In the literature, many nanowires containing a single component with functional properties have been reported [2][3][4][5][6][7] . But when multiple materials (metals, polymers and metal oxides) are incorporated sequentially within a single nanowire, multifunctional nanowires can be made 8,9 .…”

Section: Introductionmentioning

confidence: 99%

Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO<sub>2</sub>-Ag Nanowires Made by Templated Electrodeposition

Maijenburg

Rodijk

Maas

et al. 2014

JoVE

Self Cite

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Photocatalytically active nanostructures require a large specific surface area with the presence of many catalytically active sites for the oxidation and reduction half reactions, and fast electron (hole) diffusion and charge separation. Nanowires present suitable architectures to meet these requirements. Axially segmented Ag|ZnO and radially segmented (coaxial) TiO 2 -Ag nanowires with a diameter of 200 nm and a length of 6-20 µm were made by templated electrodeposition within the pores of polycarbonate track-etched (PCTE) or anodized aluminum oxide (AAO) membranes, respectively. In the photocatalytic experiments, the ZnO and TiO 2 phases acted as photoanodes, and Ag as cathode. No external circuit is needed to connect both electrodes, which is a key advantage over conventional photo-electrochemical cells. For making segmented Ag| ZnO nanowires, the Ag salt electrolyte was replaced after formation of the Ag segment to form a ZnO segment attached to the Ag segment. For making coaxial TiO 2 -Ag nanowires, a TiO 2 gel was first formed by the electrochemically induced sol-gel method. Drying and thermal annealing of the as-formed TiO 2 gel resulted in the formation of crystalline TiO 2 nanotubes. A subsequent Ag electrodeposition step inside the TiO 2 nanotubes resulted in formation of coaxial TiO 2 -Ag nanowires. Due to the combination of an n-type semiconductor (ZnO or TiO 2 ) and a metal (Ag) within the same nanowire, a Schottky barrier was created at the interface between the phases. To demonstrate the photocatalytic activity of these nanowires, the Ag|ZnO nanowires were used in a photocatalytic experiment in which H 2 gas was detected upon UV illumination of the nanowires dispersed in a methanol/water mixture. After 17 min of illumination, approximately 0.2 vol% H 2 gas was detected from a suspension of ~0.1 g of Ag|ZnO nanowires in a 50 ml 80 vol% aqueous methanol solution.

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Microstructure development in zinc oxide nanowires and iron oxohydroxide nanotubes by cathodic electrodeposition in nanopores

Abstract: Abstract

Cited by 16 publications

References 33 publications

Template-based syntheses for shape controlled nanostructures

Template-based syntheses for shape controlled nanostructures

Synthesis of ZnO Nanocrystals in SiO₂/Si Track Template: Effect of Electrodeposition Parameters on Structure

Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO<sub>2</sub>-Ag Nanowires Made by Templated Electrodeposition

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Microstructure development in zinc oxide nanowires and iron oxohydroxide nanotubes by cathodic electrodeposition in nanopores

Abstract: Abstract

Cited by 16 publications

References 33 publications

Template-based syntheses for shape controlled nanostructures

Template-based syntheses for shape controlled nanostructures

Synthesis of ZnO Nanocrystals in SiO2/Si Track Template: Effect of Electrodeposition Parameters on Structure

Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO<sub>2</sub>-Ag Nanowires Made by Templated Electrodeposition

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Synthesis of ZnO Nanocrystals in SiO₂/Si Track Template: Effect of Electrodeposition Parameters on Structure