Determination of the Real Surface Area of Pt Electrodes by Hydrogen Adsorption Using Cyclic Voltammetry

2000 ◽  
Vol 77 (9) ◽  
pp. 1195 ◽  
Author(s):  
José M. Doña Rodríguez ◽  
José Alberto Herrera Melián ◽  
Jesús Pérez Peña
Keyword(s):  
Cyclic Voltammetry ◽  
Surface Area ◽  
Hydrogen Adsorption ◽  
Real Surface ◽  
The Real ◽  
Pt Electrodes ◽  
Real Surface Area

Determination of the Real Surface Area of Palladium Electrode

2010 ◽  
Vol 23 (5) ◽  
pp. 543-548 ◽  
Author(s):  
Lan-lan Fang ◽  
Qian Tao ◽  
Ming-fang Li ◽  
Ling-wen Liao ◽  
Dong Chen ◽  
...  
Keyword(s):  
Surface Area ◽  
Real Surface ◽  
The Real ◽  
Palladium Electrode ◽  
Real Surface Area

Activity of selenium modified ruthenium-electrodes and determination of the real surface area

2007 ◽  
Vol 37 (12) ◽  
pp. 1485-1494 ◽  
Author(s):  
Nicky Bogolowski ◽  
Tina Nagel ◽  
Barbora Lanova ◽  
Siegfried Ernst ◽  
Helmut Baltruschat ◽  
...  
Keyword(s):  
Surface Area ◽  
Real Surface ◽  
The Real ◽  
Real Surface Area

Development of Microtextured Photocatalytic Surface by Vibration-Assisted Scratching

2014 ◽  
Vol 783-786 ◽  
pp. 1488-1493
Author(s):  
Jun Shimizu ◽  
Takeyuki Yamamoto ◽  
Li Bo Zhou ◽  
Teppei Onuki ◽  
Hirotaka Ojima
Keyword(s):  
Surface Area ◽  
Tio2 Film ◽  
Film Surface ◽  
The Other ◽  
Ultraviolet Rays ◽  
Light Reflection ◽  
Real Surface ◽  
Plate Surface ◽  
The Real ◽  
Real Surface Area

It is known that the TiO2 has some photocatalytic functions, even though they are relatively weak and their further enhancements are necessary for wider practical usages. On the other hand, improving materials surface functions by introducing microtextures is of great interest in various fields. Under such circumstances, the present study is aiming at developing a high-functional photocatalytic surface by earning the real surface area and reducing the light reflection and so on with the support of microtexturing technique. In this work, a pure Ti plate surface, which was covered with numerous micro impressions and micro pile-ups formed by the vibration-assisted microscratching, was anodized in order to obtain a regularly microtextured TiO2 film on the uppermost surface of Ti plate, and its wettabilty was evaluated in order to investigate its potential as the photocatalyst. As a result, it was found that the wettability of the TiO2 film surface regularly microtextured by the vibration-assisted microscratching was superior to those of the mirror finished one under the irradiation environment by the ultraviolet rays.

On the real surface area of smooth solid electrodes

1997 ◽  
Vol 42 (19) ◽  
pp. 2915-2918 ◽  
Author(s):  
Graz̊yna Jarzabek ◽  
Zofia Borkowska
Keyword(s):  
Surface Area ◽  
Real Surface ◽  
The Real ◽  
Solid Electrodes ◽  
Real Surface Area

The Effect of Ru on Unsupported Pt-Ru Alloys for Methanol Electro-Oxidation at Different Temperatures

1995 ◽  
Vol 393 ◽  
Author(s):  
Deryn Chu ◽  
Charles Walker ◽  
Sol Gilman
Keyword(s):  
Cyclic Voltammetry ◽  
Sulfuric Acid ◽  
Surface Area ◽  
Hydrogen Adsorption ◽  
X Ray Diffraction ◽  
X Ray ◽  
Different Temperatures ◽  
Adsorption Surface ◽  
Electro Oxidation ◽  
Bulk Alloys

ABSTRACTUnsupported different atomic ratios of platinum-ruthenium bulk alloys were prepared. The alloys were characterized by cyclic voltammetry, X-ray diffraction and energy dispersive X-ray spectroscopy. These alloys were also tested as anodes for methanol electro-oxidation in sulfuric acid over a range of temperatures. Ruthenium is inactive for methanol electro-oxidation at 25 °C, but becomes active at higher temperatures. When a comparison is made on the basis of “true” (hydrogen adsorption) surface area, a 30 atomic percent Ru electrocatalyst provides the highest activity for methanol electro-oxidation as measured at either 0.4 or 0.5V vs. RHE at both 25 and 60 °C.

scholarly journals Oxide electrocatalytic coatings obtained by the sol-gel procedure: Preparation and characterization

2002 ◽  
Vol 56 (5) ◽  
pp. 208-222
Author(s):  
Aleksandar Dekanski ◽  
Vladimir Panic ◽  
Branislav Nikolic
Keyword(s):  
Electrochemical Properties ◽  
Surface Area ◽  
Electrochemical Impedance ◽  
Sol Gel ◽  
Scanning Tunneling ◽  
Active Surface Area ◽  
Real Surface ◽  
Corrosion Stability ◽  
Tio2 Particles ◽  
Real Surface Area

The influence of different parameters (forced hydrolysis duration in the preparation of sols, alcohol addition in the sol mixture for application, as well as sol/alcohol mixture ageing time) on the morphology and electrochemical properties of RuO2-TiO2 coatings obtained by the sol-gel procedure is presented. The oxide sols were sharacterized by spectroscopic and microscopic methods (X-ray diffraction, TEM, etc). The morphology of the obtained coatings was examined by scanning tunneling microscopy, while the electrochemical properties were investigated by cyclic voltammetry polarization measurements, electrochemical impedance spectroscopy and the accelerated stability test. The greatest real surface area was obtained for coatings with the smallest RuO2 particles and largest TiO2 particles. Alcohol addition caused enlargement of the oxide grains and, consequently, a decrease in the real surface area. The same effects of oxide grain size were registered on electrochemically active surface area. The electrocatalytic activity of the obtained anodes for the chlorine evolution reaction increased with growth of the TiO2 particles, but depended on the RuO2 particle size to a small degree. The corrosion stability of the anode coatings consisting of the smallest RuO2 particles and largest TiO2 particles whis the greatest in the electrolysis of a sodium-chloride solution.

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