Morphology controlled 1D Pt nanostructures synthesized by galvanic displacement of Cu nanowires in chloroplatinic acid

Park, D.-Y.; Jung, Hyunsung; Rheem, Youngwoo; Hangarter, Carlos M.; Lee, Young In; Ko, Jang Myoun; Choa, Yong‐Ho; Myung, Nosang V.

doi:10.1016/j.electacta.2010.02.054

Cited by 15 publications

(16 citation statements)

References 26 publications

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“…GDR to form various metals such as Au, Ag, Pb, and Pt has been mainly demonstrated. [11][12][13][17][18][19][20][21][22][23][24] A few works have been reported for semiconductors. 8,[25][26][27][28] Moreover, GDR is a unique deposition tool that can facilitate the production of nanoparticles, hollow nanoparticles, nanotubes, or monolayer coatings.…”

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confidence: 99%

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Programmable synthesis of shape-, structure-, and composition-modulated one-dimensional heterostructures by galvanic displacement reaction

Jung

Suh

Hangarter

et al. 2012

Applied Physics Letters

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One-dimensional heterostructures consisting of periodically modulated bismuth telluride tube/wire were synthesized by galvanic displacement reaction of Co/Ni multi-segmented sacrificial nanowires. Utilizing the difference in redox potential and corrosion behavior of Co and Ni, segments, dimension, composition, and structure of the individual segments were also precisely engineered. The programmable ability to synthesize heterostructures with simultaneously modulation of various dimensions in ambient conditions may lead to an effective route to synthesize high performance nanodevices including nanoelectronics, optoelectronics, sensors, and thermoelectrics.

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confidence: 99%

“…As indicated in GDR for many metals and Bi 2 Te 3 nanotube, 22 crystallinity as described in Te segments of nanopeapods of the previous report. 8,23,24 Compared to the diameter of the sacrificial Co/Ni nanowires, the diameter of the Te-rich Bi 2 Te 3 tubular segments increased, while the diameter of the (Bi,Te)-Ni composite wire segments decreased. Figs.…”

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confidence: 99%

Programmable synthesis of shape-, structure-, and composition-modulated one-dimensional heterostructures by galvanic displacement reaction

Jung

Suh

Hangarter

et al. 2012

Applied Physics Letters

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“…There was a small peak appearing in the photocurrent curves for all the PteCu electrodes. The voltage bias corresponding to the small peak was in the range of 0.12e0.15 V, which is fairly close to the standard reduction potential for cuprous chloride [57]:…”

Section: Ptecu Electrodesmentioning

confidence: 82%

“…The product in this process is predominantly cupric ions (Cu 2þ ). However, the presence of a large amount of chlorine ions (Cl À ) in the solution is favorable to the formation of some amount of cuprous chloride (CuCl) which is only slightly soluble in water [57,58]. This cuprous chloride could be present in the PteCu electrodes even with sufficient water rinsing.…”

Section: Ptecu Electrodesmentioning

confidence: 99%

Research on preparation of cathode materials for hydrogen evolution and their photo-electrochemical properties

Zhao¹,

Wang²,

Li³

et al. 2012

International Journal of Hydrogen Energy

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“…Some studies demonstrate the benefits of platinum nanostructures (high performances for low platinum loading and improved stability of catalyst layer) as nano structured thin films (NSTF) developed by 3M Deutschland GmbH, Germany , , platinum opal nanostructures , or vertically aligned platinum nanotubes onto the Nafion ® membrane . Another way to structure platinum catalyst is to perform galvanic displacement between a dispersion of copper nanowires and a platinum salt, such as chloroplatinic acid . Park et al.…”

Section: Introductionmentioning

confidence: 99%

Vertically Aligned Platinum Copper Nanotubes as PEM Fuel Cell Cathode: Elaboration and Fuel Cell Test

et al. 2018

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This paper describes the elaboration via an electrochemistry route of a PEM carbon‐free cathode made of a periodic array of vertically aligned platinum copper nanotubes. Nanotubes synthesis is assisted with a porous alumina mold made on a silicon substrate to perform growth of copper nanowires. After optimization of an original confined galvanic displacement with H2PtCl6 salt, PtCu nanotubes are embedded into porous alumina template and directly integrated onto a Nafion® membrane. Therefore, our process does not need any step of purification or catalyst dispersion. The performances in fuel cell of these new electrodes are compared to conventional structures made of Tanaka Pt/C with the same electrocatalytic surface area. Significant improvement in the specific activity at 0.9 V and reduction in mass transport limitations are observed compared with standard Tanaka Pt/C catalyst in real operating conditions.

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Morphology controlled 1D Pt nanostructures synthesized by galvanic displacement of Cu nanowires in chloroplatinic acid

Cited by 15 publications

References 26 publications

Programmable synthesis of shape-, structure-, and composition-modulated one-dimensional heterostructures by galvanic displacement reaction

Programmable synthesis of shape-, structure-, and composition-modulated one-dimensional heterostructures by galvanic displacement reaction

Research on preparation of cathode materials for hydrogen evolution and their photo-electrochemical properties

Vertically Aligned Platinum Copper Nanotubes as PEM Fuel Cell Cathode: Elaboration and Fuel Cell Test

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