Real Active Surface Area Determination by Adsorption/Desorption of Overpotential Deposited Hydrogen

1995 ◽  
Vol 142 (4) ◽  
pp. 1144-1149 ◽  
Author(s):  
J. C. K. Ho ◽  
D. L. Piron
Keyword(s):  
Surface Area ◽  
Active Surface ◽  
Active Surface Area ◽  
Adsorption Desorption ◽  
Surface Area Determination ◽  
Area Determination

Active surface area determination of Pd-Si alloys by H-adsorption

1997 ◽  
Vol 42 (3) ◽  
pp. 493-495 ◽  
Author(s):  
A.N. Correia ◽  
L.H. Mascaro ◽  
S.A.S. Machado ◽  
L.A. Avaca
Keyword(s):  
Surface Area ◽  
Active Surface ◽  
Active Surface Area ◽  
Surface Area Determination ◽  
Area Determination

Tenacious Mass Transfer Limitations Drive Catalytic Selectivity during Electrochemical Carbon Dioxide Reduction

2019 ◽  
Author(s):  
Kailun Yang ◽  
Recep Kas ◽  
Wilson A. Smith
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Catalyst Layer ◽  
Active Surface ◽  
Active Surface Area ◽  
High Concentration ◽  
Copper Electrodes ◽  
Surface Enhanced ◽  
Local Current

<p>This study evaluated the performance of the commonly used strong buffer electrolytes, i.e. phosphate buffers, during CO<sub>2</sub> electroreduction in neutral pH conditions by using in-situ surface enhanced infrared absorption spectroscopy (SEIRAS). Unfortunately, the buffers break down a lot faster than anticipated which has serious implications on many studies in the literature such as selectivity and kinetic analysis of the electrocatalysts. Increasing electrolyte concentration, surprisingly, did not extend the potential window of the phosphate buffers due to dramatic increase in hydrogen evolution reaction. Even high concentration phosphate buffers (1 M) break down within the potentials (-1 V vs RHE) where hydrocarbons are formed on copper electrodes. We have extended the discussion to high surface area electrodes by evaluating electrodes composed of copper nanowires. We would like highlight that it is not possible to cope with high local current densities on these high surface area electrodes by using high buffer capacity solutions and the CO<sub>2</sub> electrocatalysts are needed to be evaluated by casting thin nanoparticle films onto inert substrates as commonly employed in fuel cell reactions and up to now scarcely employed in CO<sub>2</sub> electroreduction. In addition, we underscore that normalization of the electrocatalytic activity to the electrochemical active surface area is not the ultimate solution due to concentration gradient along the catalyst layer.This will “underestimate” the activity of high surface electrocatalyst and the degree of underestimation will depend on the thickness, porosity and morphology of the catalyst layer. </p> <p> </p>

Increasing Active Surface Area to Fabricate Ultra-Hydrophobic Surface by Using “Black Silicon” with Bosch Etching Process

2012 ◽  
Vol 12 (6) ◽  
pp. 4919-4927 ◽  
Author(s):  
Nithi Atthi ◽  
Jakrapong Supadech ◽  
Gaetan Dupuy ◽  
On-uma Nimittrakoolchai ◽  
Apirak Pankiew ◽  
...  
Keyword(s):  
Surface Area ◽  
Hydrophobic Surface ◽  
Active Surface ◽  
Etching Process ◽  
Black Silicon ◽  
Active Surface Area

Chemisorption of methyl mercaptane on titania-supported Au nanoparticles: Viability of Au surface area determination

2009 ◽  
Vol 339 (2) ◽  
pp. 310-316 ◽  
Author(s):  
Niels van Vegten ◽  
Peter Haider ◽  
Marek Maciejewski ◽  
Frank Krumeich ◽  
Alfons Baiker
Keyword(s):  
Surface Area ◽  
Au Nanoparticles ◽  
Surface Area Determination ◽  
Area Determination

scholarly journals Feasibility of Methyl Mercaptane as Probe Molecule for Supported Gold Nanoparticle Surface Area Determination

2010 ◽  
Vol 64 (3) ◽  
pp. 191-194 ◽  
Author(s):  
Niels van Vegten ◽  
Peter Haider ◽  
Marek Maciejewski ◽  
Frank Krumeich ◽  
Alfons Baiker
Keyword(s):  
Gold Nanoparticle ◽  
Surface Area ◽  
Probe Molecule ◽  
Nanoparticle Surface ◽  
Supported Gold ◽  
Surface Area Determination ◽  
Area Determination

Facile deposition of Pt nanoparticles on Sb-doped SnO2 support with outstanding active surface area for the oxygen reduction reaction

2018 ◽  
Vol 8 (10) ◽  
pp. 2672-2685 ◽  
Author(s):  
Rhiyaad Mohamed ◽  
Tobias Binninger ◽  
Patricia J. Kooyman ◽  
Armin Hoell ◽  
Emiliana Fabbri ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Surface Area ◽  
Pt Nanoparticles ◽  
Active Surface ◽  
Reduction Reaction ◽  
Active Surface Area

Synthesis of Sb–SnO2 supported Pt nanoparticles with an outstanding ECSA for the oxygen reduction reaction.

Sign in / Sign up

Export Citation Format

Share Document