Mass Transport in Porous Electrodes Studied by Scanning Electrochemical Microscopy: Example of Nanoporous Gold

2019 ◽  
Vol 6 (12) ◽  
pp. 3160-3166 ◽  
Author(s):  
Mareike Haensch ◽  
Luis Balboa ◽  
Matthias Graf ◽  
Alex Ricardo Silva Olaya ◽  
Jörg Weissmüller ◽  
...  
Keyword(s):  
Mass Transport ◽  
Scanning Electrochemical Microscopy ◽  
Porous Electrodes ◽  
Nanoporous Gold ◽  
Electrochemical Microscopy

Redox titration of gold and platinum surface oxides at porous microelectrodes

2017 ◽  
Vol 19 (34) ◽  
pp. 22915-22925 ◽  
Author(s):  
Mareike Haensch ◽  
Julian Behnken ◽  
Luis Balboa ◽  
Alexander Dyck ◽  
Gunther Wittstock
Keyword(s):  
Platinum Nanoparticles ◽  
Scanning Electrochemical Microscopy ◽  
Nanoporous Gold ◽  
Platinum Surface ◽  
Redox Titration ◽  
Supported Platinum ◽  
Surface Oxides ◽  
Electrochemical Microscopy

Cavity-microelectrodes were used to investigate surface oxides on supported platinum nanoparticles and nanoporous gold with the surface interrogation mode of scanning electrochemical microscopy.

Electrochemical dopamine sensor using a nanoporous gold microelectrode: a proof-of-concept study for the detection of dopamine release by scanning electrochemical microscopy

2018 ◽  
Vol 185 (8) ◽  
Author(s):  
Henry Steven Catota Sáenz ◽  
Lucas Patricio Hernández-Saravia ◽  
Jéssica S. G. Selva ◽  
Anandhakumar Sukeri ◽  
Patricio Javier Espinoza-Montero ◽  
...  
Keyword(s):  
Dopamine Release ◽  
Scanning Electrochemical Microscopy ◽  
Nanoporous Gold ◽  
Proof Of Concept ◽  
Concept Study ◽  
Gold Microelectrode ◽  
Electrochemical Microscopy

scholarly journals Use of Amperometric and Potentiometric Probes in Scanning Electrochemical Microscopy for the Spatially-Resolved Monitoring of Severe Localized Corrosion Sites on Aluminum Alloy 2098-T351

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1132 ◽  
Author(s):  
Rejane M. P. da Silva ◽  
Javier Izquierdo ◽  
Mariana X. Milagre ◽  
Abenchara M. Betancor-Abreu ◽  
Isolda Costa ◽  
...  
Keyword(s):  
Scanning Electrochemical Microscopy ◽  
Oxygen Depletion ◽  
Localized Corrosion ◽  
Alloy Surface ◽  
Al Alloy ◽  
Spatially Resolved ◽  
Lower Oxygen ◽  
Local Ph ◽  
Electrochemical Microscopy

Amperometric and potentiometric probes were employed for the detection and characterization of reactive sites on the 2098-T351 Al-alloy (AA2098-T351) using scanning electrochemical microscopy (SECM). Firstly, the probe of concept was performed on a model Mg-Al galvanic pair system using SECM in the amperometric and potentiometric operation modes, in order to address the responsiveness of the probes for the characterization of this galvanic pair system. Next, these sensing probes were employed to characterize the 2098-T351 alloy surface immersed in a saline aqueous solution at ambient temperature. The distribution of reactive sites and the local pH changes associated with severe localized corrosion (SLC) on the alloy surface were imaged and subsequently studied. Higher hydrogen evolution, lower oxygen depletion and acidification occurred at the SLC sites developed on the 2098-T351 Al-alloy.

scholarly journals Mass transport in nanoporous gold and correlation with surface pores for EC1 mechanism: Case of ascorbic acid

2021 ◽  
Author(s):  
Rita Meunier-Prest ◽  
Abhishek Kumar ◽  
Josue M. Gonçalves ◽  
Vinicius L. Furtado ◽  
Koiti Araki ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Mass Transport ◽  
Nanoporous Gold ◽  
Surface Pores

Local electrochemical activity of transition metal dichalcogenides and their heterojunctions on 3D-printed nanocarbon surfaces

Nanoscale ◽  
2021 ◽  
Author(s):  
Katarina A. Novčić ◽  
Christian Iffelsberger ◽  
Siowwoon Ng ◽  
Martin Pumera
Keyword(s):  
Transition Metal ◽  
Electrochemical Performance ◽  
Transition Metal Dichalcogenides ◽  
Scanning Electrochemical Microscopy ◽  
Electrochemical Activity ◽  
Thermally Activated ◽  
Metal Dichalcogenides ◽  
3D Printed ◽  
Electrochemical Microscopy

MoS2 and WS2 and their heterojunctions are used to modify thermally activated 3D-printed nanocarbon structures. Herein, the local electrochemical performance for HER of the modified structures is demonstrated by scanning electrochemical microscopy.

scholarly journals Simultaneous Intelligent Imaging of Nanoscale Reactivity and Topography by Scanning Electrochemical Microscopy

2021 ◽  
Author(s):  
Dylan T. Jantz ◽  
Ryan J. Balla ◽  
Siao-Han Huang ◽  
Niraja Kurapati ◽  
Shigeru Amemiya ◽  
...  
Keyword(s):  
Scanning Electrochemical Microscopy ◽  
Electrochemical Microscopy
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