Scanning Electrochemical Microscopy as a Probe of Silver Chloride Dissolution Kinetics in Aqueous Solutions

1995 ◽  
Vol 99 (40) ◽  
pp. 14824-14831 ◽  
Author(s):  
Julie V. Macpherson ◽  
Patrick R. Unwin
Keyword(s):  
Aqueous Solutions ◽  
Silver Chloride ◽  
Dissolution Kinetics ◽  
Scanning Electrochemical Microscopy ◽  
Electrochemical Microscopy

scholarly journals Quantitative Localized Proton-Promoted Dissolution Kinetics of Calcite Using Scanning Electrochemical Microscopy (SECM)

2012 ◽  
Vol 116 (28) ◽  
pp. 14892-14899 ◽  
Author(s):  
Carrie-Anne McGeouch ◽  
Massimo Peruffo ◽  
Martin A. Edwards ◽  
Lucy A. Bindley ◽  
Robert A. Lazenby ◽  
...  
Keyword(s):  
Dissolution Kinetics ◽  
Scanning Electrochemical Microscopy ◽  
Kinetics Of ◽  
Electrochemical Microscopy

Redox reactions of reactive oxygen species in aqueous solutions as the probe for scanning electrochemical microscopy of single live T24 cells

2010 ◽  
Vol 88 (6) ◽  
pp. 569-576 ◽  
Author(s):  
Xiaocui Zhao ◽  
Mengni Zhang ◽  
Yitao Long ◽  
Zhifeng Ding
Keyword(s):  
Reactive Oxygen Species ◽  
Hydrogen Peroxide ◽  
Aqueous Solutions ◽  
Redox Reactions ◽  
Reactive Oxygen ◽  
Scanning Electrochemical Microscopy ◽  
Electrochemical Technique ◽  
Oxygen Species ◽  
T24 Cells ◽  
Electrochemical Microscopy

The redox reactions of two main components of reactive oxygen species (ROS), superoxide and hydrogen peroxide, along with oxygen in aqueous solutions were investigated using a conventional electrochemical technique, differential pulse voltammetry (DPV). Superoxide undergoes oxidation at a Pt working electrode biased at 0.055 V versus Ag/AgCl, while hydrogen peroxide can be oxidized and reduced at 0.817 and –0.745 V, respectively. Oxygen in the solutions is reduced at the electrode with an applied potential of –0.455 V. Based on these results, hydrogen peroxide and superoxide released from live cells can be successfully monitored, identified, and mapped using scanning electrochemical microscopy (SECM) at different potentials. Single human bladder (T24) cells were imaged using a 5 μm diameter SECM probe biased at –0.400, –0.600, and –0.800 V. Oxygen reduction that seems an interference can be discriminated from that of hydrogen peroxide by means of SECM.

scholarly journals Hopping intermittent contact-scanning electrochemical microscopy (HIC-SECM) as a new local dissolution kinetic probe: application to salicylic acid dissolution in aqueous solution

CrystEngComm ◽  
2015 ◽  
Vol 17 (41) ◽  
pp. 7835-7843 ◽  
Author(s):  
Amelia R. Perry ◽  
Robert A. Lazenby ◽  
Maria Adobes-Vidal ◽  
Massimo Peruffo ◽  
Kim McKelvey ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Salicylic Acid ◽  
Dissolution Kinetics ◽  
Scanning Electrochemical Microscopy ◽  
Dissolution Kinetic ◽  
Acid Dissolution ◽  
Intrinsic Dissolution ◽  
Intermittent Contact ◽  
Local Dissolution ◽  
Electrochemical Microscopy

Transiently induced dissolution of salicylic acid crystals reveals initial intrinsic dissolution kinetics.

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.

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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