SERS Examination of Saccharin Adsorption on Ni Electrodes

Kwon, Hancheol; Gewirth, Andrew A.

doi:10.1149/1.2773629

Cited by 21 publications

(10 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Surface-enhanced Raman scattering (SERS) is a powerful fingerprint spectroscopic technique that can provide structural information about the adsorbed molecules on noble metal nanostructures. − However, SERS enhancement is restricted to a few noble metals such as Ag, Au, or Cu which can exhibit high SERS activity due to the electromagnetic and chemical enhancement mechanism. To extend the versatility of the SERS technique, various SERS substrates have been developed.…”

Section: Introductionmentioning

confidence: 99%

Probing the Electronic Structure of Heterogeneous Metal Interfaces by Transition Metal Shelled Gold Nanoparticle-Enhanced Raman Spectroscopy

Zhang

Duan

et al. 2016

J. Phys. Chem. C

View full text Add to dashboard Cite

In heterogeneous catalysis, characterization of heterogeneous metal interfaces of bimetallic catalysts is a crucial step to elucidate the catalytic performance and is a key to develop advanced catalysts. However, analytical techniques such as X-ray photoelectron spectroscopy can only work in vacuum conditions and are difficult to use for in situ analysis. Here, we present efficient and convenient core–shell nanoparticle-enhanced Raman spectroscopy to explore the in situ electronic structures of heterogeneous interfaces (Au@Pd and Au@Pt core–shell NPs) by varying the shell thickness. The experimental observations reported here clearly show that Pd donates electrons to Au, while Pt accepts electrons from Au at the heterogeneous interfaces. This conclusion gains further support from ex situ X-ray photoelectron spectroscopy results. The Au core greatly affects the electronic structures of both the Pd and Pt shells as well as catalytic behaviors. Finally, the as-prepared core–shell nanoparticles were used to demonstrate their improved catalytic properties in real electrocatalytic systems such as methanol oxidation and oxygen reduction reactions.

show abstract

Section: Introductionmentioning

confidence: 99%

Probing the Electronic Structure of Heterogeneous Metal Interfaces by Transition Metal Shelled Gold Nanoparticle-Enhanced Raman Spectroscopy

Zhang

Duan

et al. 2016

J. Phys. Chem. C

View full text Add to dashboard Cite

show abstract

“…The enhancement is known as the surface enhanced Raman scattering (SERS) effect. [13][14][15][16][17][18] Interestingly, copper is one of the metals that may induce the SERS effect. It's observed by CRM that the deposit from the Cu 2+ -tartrate system has a lower overall copper content than the one obtained from the Cu 2+ -lactate system, and this result fit the waveform of the SPO.…”

mentioning

confidence: 99%

Spontaneous Potential Oscillation Resulting in Copper Deposit with Ultra-Large Grains

Chan

Dow

2019

J. Electrochem. Soc.

View full text Add to dashboard Cite

There are three categories of spontaneous oscillations in copper electrodeposition. The first one is the formation of nano-scale multilayers of Cu 2 O and mixed Cu/Cu 2 O composites from an alkaline Cu 2+ -chelated solution. The second one is the formation of sub-microscale multilayers of Cu from a sulfuric acid system. The copper with sub-microscale multilayers composes of a series of horizontal grain boundaries, and the horizontal grain boundaries was formed with incorporation of organic compounds, namely plating additives. In this case, not only the grain boundaries are horizontal, but also the plating additives show a leveling capability to form a flat surface. The third one is the copper deposit formation with ultra-large grain (ULG) from a sulfuric acid plating system in this study. No organic compounds were incorporated in the copper-ULG and the surface, edges and corners of the copper-ULG, showing a single crystal outward appearance. The spontaneous oscillations waveform of ULG copper deposition was quite complicated, and it is caused by the changing/ageing of the organic compounds in the plating solution and the continuously changing of deposit surface area.

show abstract

“…The greatest inuence on the surface microstructure was exerted by the reduced adsorption of saccharin in the pulsereverse mode. [49][50][51]73 Saccharin is widely used as the brightener in the nickel plating and electrodeposition of NiFe alloys as it inhibits vertical grain growth, leading to smooth and shiny deposits. 74,75 Our scheme of its adsorption in cathodic (DC and PC modes) and alternant cathodic-anodic (PRC mode) current and thus different ways of alloy formation is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

The influence of saccharin adsorption on NiFe alloy film growth mechanisms during electrodeposition

et al. 2022

View full text Add to dashboard Cite

show abstract

SERS Examination of Saccharin Adsorption on Ni Electrodes

Cited by 21 publications

References 57 publications

Probing the Electronic Structure of Heterogeneous Metal Interfaces by Transition Metal Shelled Gold Nanoparticle-Enhanced Raman Spectroscopy

Probing the Electronic Structure of Heterogeneous Metal Interfaces by Transition Metal Shelled Gold Nanoparticle-Enhanced Raman Spectroscopy

Spontaneous Potential Oscillation Resulting in Copper Deposit with Ultra-Large Grains

The influence of saccharin adsorption on NiFe alloy film growth mechanisms during electrodeposition

Contact Info

Product

Resources

About