The Hydrophobic Effect on Electrodeposition of Billirubin Oxidase CotA

2015 ◽  
Vol 1110 ◽  
pp. 291-294
Author(s):  
Toshio Watanabe ◽  
Yohei Yamada ◽  
Haruhiko Sakuraba ◽  
Mikito Yasuzawa ◽  
Toshio Takayanagi ◽  
...  
Keyword(s):  
Gold Electrode ◽  
Hydrophobic Effect ◽  
Electrochemical Activity ◽  
Ionic Surfactant ◽  
Disc Electrode ◽  
Self Assembled Monolayer ◽  
Large Current ◽  
Alkane Thiol ◽  
Triton X ◽  
Positive Effect

The hydrophobic effect on electrodeposition of an enzyme CotA was investigated. The CotA was electrodeposited on a gold disc electrode modified with an alkane thiol self-assembled monolayer (SAM). The CotA immobilized hydrophobic SAM gold electrodes exhibited a larger electrochemical activity compared with the hydrophilic SAM and bare electrodes. In particular, large current responses were observed in an ethanethiol or a 1-butanethiol SAM gold electrode. In addition, effect of addition of non-ionic surfactant Triton X on the electrodeposition was checked using the SAM gold electrode. The addition of Triton X had a positive effect on the electrodeposition.

Electrochemical behavior of inorganic–organic hybrid polyoxometalate ((Cys)3[PW12O40]) nanostructure self-assembled monolayer on polycrystalline gold electrode surfaces

2019 ◽  
Vol 43 (3) ◽  
pp. 1388-1397 ◽  
Author(s):  
Somayeh Dianat ◽  
Abdolhamid Hatefi-Mehrjardi ◽  
Kourosh Mahmoodzadeh
Keyword(s):  
Synergistic Effect ◽  
Electrochemical Behavior ◽  
Gold Electrode ◽  
Electrochemical Activity ◽  
Self Assembled Monolayer ◽  
Electrode Surfaces ◽  
Organic Hybrid ◽  
Polycrystalline Gold ◽  
Self Assembled

The synergistic effect of HPW and Cys enhanced electrochemical activity of Au-(Cys)PW electrode.

scholarly journals Mechanical Properties of Graphene Oxide–Copper Composites

2016 ◽  
Vol 61 (2) ◽  
pp. 863-868 ◽  
Author(s):  
P. Duda ◽  
R. Muzyka ◽  
Z. Robak ◽  
S. Kaptacz
Keyword(s):  
Graphene Oxide ◽  
Tribological Properties ◽  
Low Voltage ◽  
Electrical Equipment ◽  
Oxide Content ◽  
Large Current ◽  
Current Densities ◽  
Materials Used ◽  
System Disk ◽  
Positive Effect

Abstract Due to their characteristics, sintered Cu-C composites are materials used in electrical equipment. These characteristics include high electrical conductivity, thermal conductivity and excellent resistance to abrasion. Currently, graphite nanopowder is used successfully as a carbon material. Metal-graphite, which is created on its basis, exists in different proportions of graphite to metal. A larger graphite content has a positive effect on smaller wear of commutators and rings. In contrast, a material with a higher copper content is used at high current densities. An example of such machines is a DC motor starter characterized by low voltage and large current. Tribological properties of Cu-C composites depend on the form of carbon they include. Owing to the capability to manufacture graphene, it has become possible to produce composites with its content. The present study tested the effect of a graphene oxide content on tribological properties in contact with steel. Tests were conducted on a ball-on-disk apparatus in conditions of dry friction. Microscopic observation was performed on the Hitachi SU70 field emission electron microscope. EDS analyses were performed using the Thermo Scientific X-ray Microanalysis system. Disk wear and surface geometrical structure parameters (SGP) of the samples after tribological tests were determined on the basis of measurements made on the Talysurf 3D contact profilometer from Taylor Hobson.

Electroanalytical performance of self-assembled monolayer gold electrode for chloramphenicol determination

2010 ◽  
Vol 169 (3-4) ◽  
pp. 345-351 ◽  
Author(s):  
Lúcia Codognoto ◽  
Eduardo Winter ◽  
Keity Margareth Doretto ◽  
Gabriel Bezzan Monteiro ◽  
Susanne Rath
Keyword(s):  
Gold Electrode ◽  
Self Assembled Monolayer ◽  
Self Assembled
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