Templated synthesis of pure and bimetallic gold/platinum nanotubes using complementary seeding and plating reactions

Muench, Falk; Hussein, Laith; Stohr, Tobias; Kunz, Ulrike; Ayata, Sevda; Gärtner, Ingeborg; Kleebe, Hans‐Joachim; Ensinger, Wolfgang

doi:10.1016/j.colsurfa.2016.08.036

Cited by 16 publications

(16 citation statements)

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“…This process results in the formation of dense metal layers that ultimately leads to a decrease in the nanochannel diameter. The flexibility of this method to tailor the surface chemistry of polymer nanochannels through metallization processes has been demonstrated by several authors, who have shown that electroless deposition not only provides a good platform for the further nanopore functionalization via thiols self‐assembly but also as a strategy to image the shape of the nanopores …”

Section: Functionalization Of Solid‐state Nanoporesmentioning

confidence: 99%

Molecular Design of Solid‐State Nanopores: Fundamental Concepts and Applications

et al. 2019

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Solid‐state nanopores are fascinating objects that enable the development of specific and efficient chemical and biological sensors, as well as the investigation of the physicochemical principles ruling the behavior of biological channels. The great variety of biological nanopores that nature provides regulates not only the most critical processes in the human body, including neuronal communication and sensory perception, but also the most important bioenergetic process on earth: photosynthesis. This makes them an exhaustless source of inspiration toward the development of more efficient, selective, and sophisticated nanopore‐based nanofluidic devices. The key point responsible for the vibrant and exciting advance of solid nanopore research in the last decade has been the simultaneous combination of advanced fabrication nanotechnologies to tailor the size, geometry, and application of novel and creative approaches to confer the nanopore surface specific functionalities and responsiveness. Here, the state of the art is described in the following critical areas: i) theory, ii) nanofabrication techniques, iii) (bio)chemical functionalization, iv) construction of nanofluidic actuators, v) nanopore (bio)sensors, and vi) commercial aspects. The plethora of potential applications once envisioned for solid‐state nanochannels is progressively and quickly materializing into new technologies that hold promise to revolutionize the everyday life.

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Section: Functionalization Of Solid‐state Nanoporesmentioning

confidence: 99%

Molecular Design of Solid‐State Nanopores: Fundamental Concepts and Applications

et al. 2019

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“…Metallic nanostructures are of great interest because of their large variety of catalytic, [1][2][3][4][5][6][7][8][9][10][11][12] magnetic, [13,14] mechanical or optical properties. [15,16] By utilizing alloys instead of single metals, the functionality of such nanostructures can be altered and enhanced.…”

Section: Introductionmentioning

confidence: 99%

“…This challenge is commonly overcome by using template-guided metal depositions. [1,2,[6][7][8][9]12,[35][36][37][38] The conventional electroless plating of macroscopic template components advanced to metal deposition onto nanostructured templates. For instance, it is possible to reliably and independently control the density, diameter, interconnectivity and shape of the template pores and thus the morphology of the resulting NTs through ion-track-etching technology.…”

Section: Introductionmentioning

confidence: 99%

“…[1,2,7,8] Among various synthesis routes to prepare PdÀ Pt catalysts for catalytic applications, [39][40][41][42][43][44] electroless plating represents a facile solution deposition method with excellent scalability and conformity, making it a very promising tool for nanofabrication. [1,2,[6][7][8][9]12,[35][36][37][38] In contrast to other deposition methods such as electrodeposition or evaporation, it requires neither complex instrumentation nor specific template properties (e. g., conductivity or heat-resistance). Furthermore, due to its excellent conformity, it is compatible with complex shaped substrates and recessed surfaces.…”

Section: Introductionmentioning

confidence: 99%

“…As a result of these complexities, even chemically related elements like silver and gold vary tremendously in their respective plating conditions. [12,48] The electroless plating of multi-metal systems adds further requirements to the plating bath's reactivity, making the realization of such systems even more demanding. Here, each possible combination of the present metal complexes and reducing agent(s) must simultaneously fulfill the metastability criterion, notably under the same global conditions (i. e., composition, temperature and pH value).…”

Section: Introductionmentioning

confidence: 99%

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Electroless Nanoplating of Pd−Pt Alloy Nanotube Networks: Catalysts with Full Compositional Control for the Methanol Oxidation Reaction

et al. 2020

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Due to its simplicity, flexibility and conformity, electroless plating presents itself as an attractive route towards functional metal nanostructures. Despite the importance for creating multimetallic materials with enhanced properties, the complex interactions between the components in electroless plating baths make alloy formations a challenging objective. In this work, we outline an electroless plating strategy fabricating Pd−Pt alloy nanomaterials, which is based on arbitrarily miscible plating baths for the individual metals. To demonstrate the excellent nanoscale conformity and homogeneity of our plating system, we apply it to ion track‐etched polymer templates with large inner surfaces as ambitious substrates, resulting in the formation of 3D free‐standing PdxPt100‐x‐nanotube‐networks (NTNWs). Based on the electro‐oxidation of methanol as a model reaction, we utilize the compositional freedom provided by our syntheses for optimizing the catalytic performance of our metal NTNWs, which heavily depends on the Pd−Pt ratio. Within our system, the highest surface normalized activity was found for the Pd20Pt80 NTNW, reaching more than a two‐fold increase of the peak current density in comparison to pure Pt. Overall, our reaction system provides a versatile toolkit for fabricating intricate Pd−Pt nanostructures of arbitrary elemental composition, and constitutes a starting point for designing new electroless alloy plating baths.

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Electroless Plating of Metal Nanomaterials

Muench

2021

ChemElectroChem

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Electroless plating is commonly associated with metallizing macroscopic work pieces, but also represents a surprisingly powerful nanomanufacturing tool. This review details the technique's use for creating nanomaterials of arbitrary dimensionality, ranging from nanoparticles over nanotubes, nanowires, and ultrathin films to nanostructured lattices, focusing on the solution chemistry and mechanistic aspects. The synthesis of defined nanostructures serves as overarching perspective, which is enriched by drawing connections to and insights from related fields. Strategies for controlling the size, shape, crystallinity, porosity, composition, and arrangement of electrolessly plated nanostructures are outlined, including templating (which harnesses the method's exceptional conformality to guide and limit deposit formation), the complementary approach of selective growth, tailored seeding, and bath design. Being able to strike convincing compromises between material quality and ease of preparation, electroless nanoplating has a distinct potential to facilitate the application of metal nanomaterials.

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Templated synthesis of pure and bimetallic gold/platinum nanotubes using complementary seeding and plating reactions

Cited by 16 publications

References 50 publications

Molecular Design of Solid‐State Nanopores: Fundamental Concepts and Applications

Molecular Design of Solid‐State Nanopores: Fundamental Concepts and Applications

Electroless Nanoplating of Pd−Pt Alloy Nanotube Networks: Catalysts with Full Compositional Control for the Methanol Oxidation Reaction

Electroless Plating of Metal Nanomaterials

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