Unveiling Adsorption of Boron Dipyrromethene Conjugated PbS Nanocrystals on Pt Electrode Surface: An Approach Using Electrogenerated Chemiluminescence Spooling Spectra and Multivariate Analysis

2019 ◽  
Vol 123 (11) ◽  
pp. 2171-2177 ◽  
Author(s):  
Saeed Bagheri ◽  
Giovanni Valenti ◽  
Mohsen Kompany-Zareh
Keyword(s):  
Multivariate Analysis ◽  
Electrode Surface ◽  
Electrogenerated Chemiluminescence ◽  
Pt Electrode ◽  
Pbs Nanocrystals ◽  
Boron Dipyrromethene

Polyaniline Modified Surface of Electrode for Boosting the Electrocatalysis on Hydrogen Evolution Reaction and Ethanol Oxidation Reaction

2021 ◽  
Author(s):  
Yankun Huang ◽  
Feng Bao ◽  
Muwei Ji ◽  
Yanzhao Hu ◽  
Liu Huang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrode Surface ◽  
Oxidation Reaction ◽  
Ethanol Oxidation ◽  
Carbon Paper ◽  
Ethanol Oxidation Reaction ◽  
Pt Electrode ◽  
Modified Surface

Here, polyaniline (PANI) is reported loaded on carbon paper to modify the carbon paper-PANI-Pt electrode surface, tailoring the electrocatalytic capability on hydrogen evolution reaction and ethanol oxidation reaction. The reasons...

The Effect of Appending of I-，Fe2+ and MnO4- to the Electro-Oxidation of Methanol on Platinum Electrode

2012 ◽  
Vol 608-609 ◽  
pp. 894-897
Author(s):  
Hai Tao Wang ◽  
Zhen Jin ◽  
Yu Chun Qin
Keyword(s):  
Aqueous Solution ◽  
Electrode Surface ◽  
Platinum Electrode ◽  
Cyclic Voltammograms ◽  
Pt Electrode ◽  
Promotion Effect ◽  
Oxidation Current ◽  
Oxidation Of Methanol ◽  
Electronic Distribution ◽  
Electro Oxidation

Three kinds of ions (I-、Fe2+and MnO4-) were appended into the methanol aqueous solution respectively as an additive and the Cyclic voltammograms of the aqueous solutions were studied. The results showed that Fe2+had obvious promotion effect for electro-oxidation of methanol and could improve the methanol anodic oxidation current by 85 percent. The promotion effect of the thulium Ions were related with the electronic distribution of these elements and their adsorption on the Pt electrode surface. I-and MnO4-could facilitate the electro-oxidation of methanol at different extent.

The study of monochlorinated phenols using hyphenated electrochemical method

2011 ◽  
Vol 76 (8) ◽  
pp. 997-1012
Author(s):  
Matilda Roziková ◽  
Pavel Janderka ◽  
Libuše Trnková
Keyword(s):  
Electrode Surface ◽  
Electrochemical Method ◽  
Quartz Crystal ◽  
Film Formation ◽  
Electrochemical Quartz Crystal Microbalance ◽  
Polymeric Film ◽  
Low Permeability ◽  
Pt Electrode ◽  
Cyclic Voltammetric ◽  
Strong Adsorption

Cyclic voltammetric (CV) study of electrooxidation of monochlorophenols (2-chlorophenol, 3-chlorophenol, 4-chlorophenol) on a Pt electrode in 0.5 M H2SO4 was combined with the experiment using electrochemical quartz crystal microbalance (EQCM). For all chlorophenols the polymeric film formation on the electrode surface has been observed and the electrode surface was completely covered with polymeric film after five cycles. Partial deactivation of the electrode resulting in the formation of the more permeable film was created in the case of 2-chlorophenol and the film of 4-chlorophenol was created also with the low permeability. The influence of the scan rate on the electrooxidation of chlorophenol was evaluated. It was found that the lower electropolymerization rate and better permeability of the film was observed at higher scan rates. Valuable insights into complex electrooxidation processes of all chlorophenols were also gained by means of the elimination voltammetry with linear scan (EVLS). The EVLS functions, eliminating two current components, reveal a strong adsorption state of 3-chlorophenol and show differences in electrochemical behavior of chlorophenols in all cycles. From the comparison of elimination results of corresponding derivatives the different mechanism of electrooxidation was suggested.

scholarly journals A Comparison of Commercially Available Screen-Printed Electrodes for Electrogenerated Chemiluminescence Applications

2021 ◽  
Vol 8 ◽  
Author(s):  
Emily Kerr ◽  
Richard Alexander ◽  
Paul S. Francis ◽  
Rosanne M. Guijt ◽  
Gregory J. Barbante ◽  
...  
Keyword(s):  
Electrode Surface ◽  
Homogeneous Solution ◽  
Electrogenerated Chemiluminescence ◽  
Platinum Electrodes ◽  
Oxide Formation ◽  
Detection Systems ◽  
Screen Printed Electrodes ◽  
Ordered Mesoporous ◽  
Surface Oxide Formation ◽  
Screen Printed

We examined a series of commercially available screen-printed electrodes (SPEs) for their suitability for electrochemical and electrogenerated chemiluminescence (ECL) detection systems. Using cyclic voltammetry with both a homogeneous solution-based and a heterogeneous bead-based ECL assay format, the most intense ECL signals were observed from unmodified carbon-based SPEs. Three commercially available varieties were tested, with Zensor outperforming DropSens and Kanichi in terms of sensitivity. The incorporation of nanomaterials in the electrode did not significantly enhance the ECL intensity under the conditions used in this evaluation (such as gold nanoparticles 19%, carbon nanotubes 45%, carbon nanofibers 21%, graphene 48%, and ordered mesoporous carbon 21% compared to the ECL intensity of unmodified Zensor carbon electrode). Platinum and gold SPEs exhibited poor relative ECL intensities (16% and 10%) when compared to carbonaceous materials, due to their high rates of surface oxide formation and inefficient oxidation of tri-n-propylamine (TPrA). However, the ECL signal at platinum electrodes can be increased ∼3-fold with the addition of a surfactant, which enhanced TPrA oxidation due to increasing the hydrophobicity of the electrode surface. Our results also demonstrate that each SPE should only be used once, as we observed a significant change in ECL intensity over repeated CV scans and SPEs cannot be mechanically polished to refresh the electrode surface.

An efficient method in manipulating CO coverage dissociated from small organic molecules on the Pt electrode surface

2017 ◽  
Vol 47 (5) ◽  
pp. 647-654
Author(s):  
Wen-Jie Chen ◽  
Chun-Mei Xiao ◽  
Yi-Ting Chen ◽  
Xue-Jiao Sun ◽  
Miao-Qiong Xu ◽  
...  
Keyword(s):  
Efficient Method ◽  
Electrode Surface ◽  
Organic Molecules ◽  
Pt Electrode ◽  
Small Organic Molecules

Galvanic replacement of copper adatoms from a Pt/Pt electrode surface in H2PtCl6 solutions

2011 ◽  
Vol 21 (1) ◽  
pp. 29-30 ◽  
Author(s):  
Ulmas E. Zhumaev ◽  
Yurii M. Maksimov ◽  
Boris I. Podlovchenko
Keyword(s):  
Electrode Surface ◽  
Galvanic Replacement ◽  
Pt Electrode ◽  
Copper Adatoms

scholarly journals An In-Situ FTIR Reflection-Absorption Spectroscopic Study of Water on and Near Pt Electrode Surface

1990 ◽  
Vol 6 (03) ◽  
pp. 318-322
Author(s):  
Zhang Jiu-Jun ◽  
◽  
Lu Jun-Tao ◽  
Zha Chuan-Sin ◽  
Feng Zi-Gang
Keyword(s):  
Spectroscopic Study ◽  
Electrode Surface ◽  
Pt Electrode
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