A Colloidal Templating Method To Hollow Bimetallic Nanostructures

Lu, Lehui; Sun, Guoying; Shen, Xi; Wang, Haishui; Zhang, Hongjie; Wang, Tiedong; Zhou, Xiaohuan

doi:10.1021/la026521c

Cited by 57 publications

(25 citation statements)

References 33 publications

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“…[45] Bimetallic Au/Pt hollow spheres have been prepared by chemical reduction/precipitation of Pt on Au seeded silica templates followed by removal of silica in HF solution. [46] Chen and co-workers prepared Ni 1-x Pt x alloy hollow spheres by chemical reduction of Ni 2þ adsorbed on the surface of poly(styrene-co-methacrylic acid) (PSA) templates and subsequent alloying with Pt via replacement reaction. [47] Mesoporous Fe 3 O 4 hollow spheres have been prepared by chemical adsorption/precipitation of Fe 2þ on carboxyl-functionalized PS templates at 80 8C in the presence of ethylene glycol (EG).…”

Section: Direct Chemical Depositionmentioning

confidence: 99%

Hollow Micro‐/Nanostructures: Synthesis and Applications

2008

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Hollow micro‐/nanostructures are of great interest in many current and emerging areas of technology. Perhaps the best‐known example of the former is the use of fly‐ash hollow particles generated from coal power plants as partial replacement for Portland cement, to produce concrete with enhanced strength and durability. This review is devoted to the progress made in the last decade in synthesis and applications of hollow micro‐/nanostructures. We present a comprehensive overview of synthetic strategies for hollow structures. These strategies are broadly categorized into four themes, which include well‐established approaches, such as conventional hard‐templating and soft‐templating methods, as well as newly emerging methods based on sacrificial templating and template‐free synthesis. Success in each has inspired multiple variations that continue to drive the rapid evolution of the field. The Review therefore focuses on the fundamentals of each process, pointing out advantages and disadvantages where appropriate. Strategies for generating more complex hollow structures, such as rattle‐type and nonspherical hollow structures, are also discussed. Applications of hollow structures in lithium batteries, catalysis and sensing, and biomedical applications are reviewed.

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Section: Direct Chemical Depositionmentioning

confidence: 99%

Hollow Micro‐/Nanostructures: Synthesis and Applications

2008

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“…A variety of colloid particles such as silica particles, polystyrene spheres, carbon spheres, an so on have been used as hard templates to fabricate hollow spheres. [5][6][7][8][9] The hard template method has many advantages in the fabrication of hollow spheres: hollow spheres with different sizes can be achieved by the use of colloid particles of a given size, and the wall thickness and composition of hollow spheres can be controlled by adjusting reaction parameters. In the soft template technology, vesicles, micelles, and emulsions formed from amphiphilic molecules through self-assembly are often used as templates.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of CoFe₂O₄ Hollow Spheres

2008

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“…In a conventional template based fabrication of hollow nanoparticles, platinum is deposited around functionalized spherical sacrificial templates such as polystyrene or silica spheres followed by template removal comparable to the methods shown in 3.2.3 94, 144, 146, 147. Disadvantage of accordingly fabricated hollow structures is that they often suffer from an incomplete coverage and hence from a non‐uniform shell thickness and structural fragility 145…”

Section: Fabrication Of Nanoparticle Based Platinum Electrodesmentioning

confidence: 99%

Strategies for the Fabrication of Porous Platinum Electrodes

et al. 2011

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Porous platinum is of high technological importance due to its various applications in fuel cells, sensors, stimulation electrodes, mechanical actuators and catalysis in general. Based on a discussion of the general principles behind the reduction of platinum salts and corresponding deposition processes this article discusses techniques available for platinum electrode fabrication. The numerous, different strategies available to fabricate platinum electrodes are reviewed and discussed in the context of their tuning parameters, strengths and weaknesses. These strategies comprise bottom-up approaches as well as top-down approaches. In bottom-up approaches nanoparticles are synthesized in a fi rst step by chemical, photochemical or sonochemical means followed by an electrode formation step by e.g. thin fi lm technology or network formation to create a contiguous and conducting solid electrode structure. In top-down approaches fabrication starts with an already conductive electrode substrate. Corresponding strategies enable the fabrication of substrate-based electrodes by e.g. electrodeposition or the fabrication of self-supporting electrodes by dealloying. As a further top-down strategy, this review describes methods to decorate porous metals other than platinum with a surface layer of platinum. This way, fabrication methods not performable with platinum can be applied to the fabrication of platinum electrodes with the special benefit of low platinum consumption.

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A Colloidal Templating Method To Hollow Bimetallic Nanostructures

Cited by 57 publications

References 33 publications

Hollow Micro‐/Nanostructures: Synthesis and Applications

Hollow Micro‐/Nanostructures: Synthesis and Applications

Synthesis and Characterization of CoFe₂O₄ Hollow Spheres

Strategies for the Fabrication of Porous Platinum Electrodes

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A Colloidal Templating Method To Hollow Bimetallic Nanostructures

Cited by 57 publications

References 33 publications

Hollow Micro‐/Nanostructures: Synthesis and Applications

Hollow Micro‐/Nanostructures: Synthesis and Applications

Synthesis and Characterization of CoFe2O4 Hollow Spheres

Strategies for the Fabrication of Porous Platinum Electrodes

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Synthesis and Characterization of CoFe₂O₄ Hollow Spheres