Concentration profile within diffusion layer under non-forced hydrodynamic conditions measured by Michelson interferometer

You, Hongjun; Fang, Jixiang; Chen, Feng; Zhu, Chao; Song, Xiaoping; Ding, Bingjun

doi:10.1016/j.cplett.2008.09.034

Cited by 18 publications

(5 citation statements)

References 17 publications

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“…55 With the decrease of the diffusion energy barrier, the atomic diffusion becomes easy accordingly, thus the morphology changes from fractal to dendrite and eventually the predicted polyhedral shapes, matching very well with experimental data. In the synthesis of colloid metal nanocrystals, most of the precursors are metal ions in solution, so the concentration gradient, 64 reduction rate 65 and diffusion 57 all have important effects on the growth.…”

Section: Diffusion-limited Growthmentioning

confidence: 99%

Synthesis of colloidal metal and metal alloy nanoparticles for electrochemical energy applications

et al. 2013

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This Review is focused on the recent progresses in the synthetic approaches to the precise control of structure, size, shape, composition and multi-functionality of metal and metal alloy nanoparticles. Many of these strategies have been developed based on colloidal methods, and to limited extent, the galvanic and other methods. The shape, size and composition often govern the chemical and catalytic properties that are important for electrochemical energy applications. The structure-property relationship and the design in controllable structures and morphologies for specific reactions such as oxygen reduction reaction (ORR) are emphasized.

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Section: Diffusion-limited Growthmentioning

confidence: 99%

Synthesis of colloidal metal and metal alloy nanoparticles for electrochemical energy applications

et al. 2013

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“…Electrochemical method Some complex structures can be formed on the electrode by designing the proper potential and concentration of electrolytes or other parameters using theory from the electric double layer model. [64][65][66][67] Hierarchical morphologies includ-ing noble metal wire, [50] flower, [51] and nanoparticles on some templates can be obtained.…”

Section: Redox Reactionmentioning

confidence: 99%

Three-dimensional noble-metal nanostructure: A new kind of substrate for sensitive, uniform, and reproducible surface-enhanced Raman scattering

2014

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“…The hierarchical morphology of deposited noble-metal nanostructures is usually determined by the following factors: limited diffusion of metal ions near the electrode, concentration field and electric field near the electrode, and limited diffusion of metal atoms on the disposition crystalline plane. The concentration of metal ions near the tips of the hierarchical nanostructure is higher, which induced the protuberant growth . The electric field would limit the diffusion of metal ions and directed the growth of nanostructures along the electric field directions. , To further understand the influence factors of the growth of Au nanostructures, different electrodeposition parameters were investigated, including deposition potential, and concentrations of HCl and HAuCl 4 .…”

Section: Resultsmentioning

confidence: 99%

Shape-Controlled Hierarchical Flowerlike Au Nanostructure Microarrays by Electrochemical Growth for Surface-Enhanced Raman Spectroscopy Application

et al. 2020

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How to fabricate Au nanostructures conveniently on microstructured/nanostructured arrays surface with low cost has become a crucial and urgent challenge. In this study, we demonstrate hierarchical flowerlike Au nanostructures with rich nanothorns (HF-AuNTs) through one-step electrochemical deposition. The morphology of the HF-AuNTs is easily manipulated by controlling the applied potential or precursor solution concentration of electrodeposition. The as-prepared HF-AuNTs possessing unique local morphology of thin petals and dense thorns are further applied in the Si micropit arrays to acquire HF-AuNTs microarrays. As an initial detection, these HF-AuNTs microarrays exhibit a fascinating surface-enhanced Raman spectroscopy consistency (relative standard deviation is 7.17%) and sensitivity with the limitation of crystal violet reaching to 10–10 M, and Rhodamine 6G reaching to 10–11 M. The HF-AuNTs microarrays with well-defined shape and elaborate structure may be applicated in SERS substrates, superhydrophobic materials, and so on.

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Concentration profile within diffusion layer under non-forced hydrodynamic conditions measured by Michelson interferometer

Cited by 18 publications

References 17 publications

Synthesis of colloidal metal and metal alloy nanoparticles for electrochemical energy applications

Synthesis of colloidal metal and metal alloy nanoparticles for electrochemical energy applications

Three-dimensional noble-metal nanostructure: A new kind of substrate for sensitive, uniform, and reproducible surface-enhanced Raman scattering

Shape-Controlled Hierarchical Flowerlike Au Nanostructure Microarrays by Electrochemical Growth for Surface-Enhanced Raman Spectroscopy Application

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