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Electrodeposition and electroless plating of hierarchical metal superstructures composed of 1D nano- and microscale building blocks

Muench, Falk and Felix, Eva-Maria and Rauber, Markus and Schaefer, Sandra and Antoni, Markus and Kunz, Ulrike and Kleebe, Hans-Joachim and Trautmann, Christina and Ensinger, Wolfgang (2016):
Electrodeposition and electroless plating of hierarchical metal superstructures composed of 1D nano- and microscale building blocks.
In: Electrochimica Acta, pp. 47-54, 202, ISSN 0013-4686,
[Online-Edition: http://dx.doi.org/10.1016/j.electacta.2016.03.188],
[Article]

Abstract

The fabrication of ordered superstructures composed of nano-and microscale building blocks is of tremendous interest. In this work, we present a versatile approach for the synthesis of hierarchical and free-standing metal architectures of high structural complexity. Using the ion-track etching technique, hierarchically porous polycarbonate membranes are obtained, which are employed as nanocasting templates. Pore filling is accomplished by the two complementary wet-chemical techniques electrodeposition and electroless plating. Depending on the pore filling mechanism and the template structure, a wide range of novel metal nano-/micro-architectures can be realized. The products can be characterized as hierarchical assemblies of 1D structures (nanotubes, nanowires, microwires, nanorods). With electrodeposition, complete pore filling is achieved, which results in the formation of wire-based morphologies. Special attention is dedicated to the controlled partial filling of the pores with electroless plating, which allows the simultaneous deposition of tubes and - depending on the conformity of the plating reaction and the deposition time - narrower arrays of tubes, wires or rods. To demonstrate the favorable functional properties of the obtainable products, a silver-based wire-tube assembly is employed in the enzyme-free and selective electrochemical detection of hydrogen peroxide. An excellent sensitivity of 1340 mu A mM(-1)cm(-2) and a fast response time of <2 s is achieved, which is explained by the absence of binders, the well-accessible, open-pored structure, the presence of continuous conduction pathways and the high surface area of the material. (C) 2016 Elsevier Ltd. All rights reserved.

Item Type: Article
Erschienen: 2016
Creators: Muench, Falk and Felix, Eva-Maria and Rauber, Markus and Schaefer, Sandra and Antoni, Markus and Kunz, Ulrike and Kleebe, Hans-Joachim and Trautmann, Christina and Ensinger, Wolfgang
Title: Electrodeposition and electroless plating of hierarchical metal superstructures composed of 1D nano- and microscale building blocks
Language: English
Abstract:

The fabrication of ordered superstructures composed of nano-and microscale building blocks is of tremendous interest. In this work, we present a versatile approach for the synthesis of hierarchical and free-standing metal architectures of high structural complexity. Using the ion-track etching technique, hierarchically porous polycarbonate membranes are obtained, which are employed as nanocasting templates. Pore filling is accomplished by the two complementary wet-chemical techniques electrodeposition and electroless plating. Depending on the pore filling mechanism and the template structure, a wide range of novel metal nano-/micro-architectures can be realized. The products can be characterized as hierarchical assemblies of 1D structures (nanotubes, nanowires, microwires, nanorods). With electrodeposition, complete pore filling is achieved, which results in the formation of wire-based morphologies. Special attention is dedicated to the controlled partial filling of the pores with electroless plating, which allows the simultaneous deposition of tubes and - depending on the conformity of the plating reaction and the deposition time - narrower arrays of tubes, wires or rods. To demonstrate the favorable functional properties of the obtainable products, a silver-based wire-tube assembly is employed in the enzyme-free and selective electrochemical detection of hydrogen peroxide. An excellent sensitivity of 1340 mu A mM(-1)cm(-2) and a fast response time of <2 s is achieved, which is explained by the absence of binders, the well-accessible, open-pored structure, the presence of continuous conduction pathways and the high surface area of the material. (C) 2016 Elsevier Ltd. All rights reserved.

Journal or Publication Title: Electrochimica Acta
Volume: 202
Uncontrolled Keywords: Ion beam technology, electrodeposition, electroless plating, free-standing nanostructures, hierarchical nanomaterials
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Geo-Material-Science
11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences > Material Science > Ion-Beam-Modified Materials
11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 06 Jun 2016 12:03
Official URL: http://dx.doi.org/10.1016/j.electacta.2016.03.188
Identification Number: doi:10.1016/j.electacta.2016.03.188
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