A general template-based method for the preparation of nanomaterials

Hulteen, John C.; Martin, Charles R.

doi:10.1039/a700027h

Cited by 1,050 publications

(780 citation statements)

References 43 publications

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“…The smallest pores formed by conventional anodizing have a diameter of ~7 nm [144]. Recently, Inada et al [145] developed a novel anodizing technique which employed a pulse sequential voltage with a frequency of 100 Hz.…”

Section: Obtaining Aao-cnts With Smaller Diametermentioning

confidence: 99%

Carbon nanotubes prepared by anodic aluminum oxide template method

et al. 2011

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One of the most unique structural characteristics of carbon nanotubes (CNTs) differentiating from other carbon materials is their hollow nanochannles, which can be utilized for encapsulating and loading foreign matters. The anodic aluminum oxide (AAO) template technique enables the diameter, length, and cap structure control of the replicated CNTs, and thus shows advantages in pore structure control over the traditional CNT growth approaches. This review details the synthesis of CNTs with tunable diameter, length, wall thickness, and crystalline by using the AAO template method. The doping of heteroatoms and filling of foreign matters into AAO-CNTs are also addressed. Moreover, the main challenges and developing trends of the AAO template method are discussed.carbon nanotubes (CNTs), anodic aluminum oxide (AAO) template method, controllability Citation:Hou P X, Liu C, Shi C, et al. Carbon nanotubes prepared by anodic aluminum oxide template method.

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Section: Obtaining Aao-cnts With Smaller Diametermentioning

confidence: 99%

Carbon nanotubes prepared by anodic aluminum oxide template method

et al. 2011

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“…14,[104][105][106] This approach has a parallel in the electrodeposition studies on solid surfaces referred to above: g-alumina membranes and related materials have been coated on one face with a metal, and thus used to ''template'' the deposition of metallic ''nanorods'' from solution by a number of research groups. 26,107,108 The approach has been extended to the formation of metallic ''bar-codes'', by successive immersion of the membrane-modified electrode in solutions of the corresponding metal ions. 109 The beauty of applying template deposition to the L/L interface is that contact between the two liquid phases and the membrane can be made spontaneously.…”

Section: Electron Transfer At the L/l Interface: Metal Deposition At mentioning

confidence: 99%

Modifying the liquid/liquid interface: pores, particles and deposition

Dryfe

2006

Phys. Chem. Chem. Phys.

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“…The resultant binary materials are highly dependent on the features of binary-pore template, and countless binary materials are expected using suitable fabrication strategies. To show the potential of the binary nanostructuring concept in puzzling model systems of significant current interests, the authors demonstrated their potential applications in wireless photosynthesis cells, plasmonic de- It is well known that AAO template has been widely used for fabrication of nanostructured materials [10,11]. However, as a significant breakthrough in the fabrication of binary materials, this reviving but unique binary-pore AAO template developed by Lei et al [8] allows us to quantitatively disentangle the interplay between the sub-components and pursue oriented collective properties.…”

Section: A Reviving Templating Methods For Multiple Nanostructuresmentioning

confidence: 99%

A reviving templating method for multiple nanostructures

2017

Sci. China Mater.

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Binary materials, comprised by two dissimilar components in one matrix, already exist in nature from the subatomic to the universal scale with different kinds of forms (e.g., nuclei and electrons, matter and antimatter) [1]. With the progress of nanotechnology, binary materials assembled in nanoscale become an important principle to pursuit innovative functions [2]. Especially when the binary sub-components are in the interplay distance, intimate coupling between these components becomes dominant and endows the macroscopic materials with unique physical and/or chemical phenomena with superior functionalities that cannot be achieved by either of the individual sub-components. Therefore, many strategies, including 'bottom-up' wet-chemicals and 'top-down' physical-approaches, have been intensively explored to synthesize different binary materials [3][4][5][6][7]. However, the resultant binary materials are usually facing limited option of compositions and morphologies, as well as poor controlling of distributions and distances. Therefore, exploiting an effective solution to address these issues and realize the practical implementation is a significant request.Recently, Lei and colleagues at the Ilmenau University of Technology in Germany reported a concept of binary nanostructuring to tackle this long-standing challenge [8]. They ingeniously employed a unique binary-pore anodized aluminium oxide (AAO) template to successfully realize diverse binary materials on large scale. The most important key of their technique is using a selective etching process to generate the binary-pore template, which possesses not only two sets of pores (e.g., square-shaped and round-shaped pores) but also two barriers located on the opposite side of the template (Fig. 1a). These features enable the researchers to modulate each set of pore size and shape in a high degree of freedom, as well as to deposit different materials in each set of pores separately (Fig. 1b and e).From the in-situ scanning electron microscope (SEM) investigation and electric field simulation on the as-prepared template, the authors concluded that a combination of electric-field assisted dissolution and plastic oxide flow gives rise to the growth of the unique binary-pore structures (Fig. 1c). Based on this purposed mechanism, they successfully developed ternary-and quadruple-pore templates with the same selective etching process. More interestingly, the morphology of the new etched pores, like C-pores in the ternary-pore template, can be adjusted not only by the selective etching time but also by the size difference of A-pore and B-pore. Therefore, with the size difference of A-pore and B-pore decreasing, the shape of C-pores can gradually change from oval to round (Fig. 1d). Considering that their binary-pore templates are also realizable in a wide range of interpore distance from 142 ± 13 to 573 ± 27 nm, the capability of the binary-pore template is far more beyond than those of the state-of-art hard and soft templates [9].Combining with well-established approa...

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A general template-based method for the preparation of nanomaterials

Cited by 1,050 publications

References 43 publications

Carbon nanotubes prepared by anodic aluminum oxide template method

Carbon nanotubes prepared by anodic aluminum oxide template method

Modifying the liquid/liquid interface: pores, particles and deposition

A reviving templating method for multiple nanostructures

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