Promoting role of unalloyed Sn in PtSn binary catalysts for ethanol electro-oxidation

2009 ◽  
Vol 116 (1) ◽  
pp. 223-228 ◽  
Author(s):  
Sagar Sen Gupta ◽  
Susmita Singh ◽  
Jayati Datta
Keyword(s):  
Electro Oxidation ◽  
Binary Catalysts

Electro-oxidation of landfill leachate using boron-doped diamond: role of current density, pH and ions

2019 ◽  
Vol 79 (5) ◽  
pp. 921-928 ◽  
Author(s):  
F. Agustina ◽  
A. Y. Bagastyo ◽  
E. Nurhayati
Keyword(s):  
Current Density ◽  
Organic Content ◽  
Cod Removal ◽  
Boron Doped Diamond ◽  
Leachate Treatment ◽  
Ammonium Removal ◽  
Boron Doped ◽  
Wide Range ◽  
Electro Oxidation

Abstract Electro-oxidation using a boron-doped diamond (BDD) anode can be used as an alternative to leachate treatment. Aside from the hydroxyl radical, BDDs are capable of generating chloride and sulfate radical species that play significant roles in the oxidation of pollutants. This research investigated the role of Cl−:SO42− ions at molar ratios of 237:1, 4:1 and 18:1, and the influence of applied current density (i.e. 50, 75 and 100 mA cm−2) on the removal of organic and ammonium contaminants. The results show that current density had considerable effects on chemical oxygen demand (COD) and colour removal, while ion composition of Cl−:SO42− at pH 3, 5 and 8.5 (original pH) gave different effects on COD and ammonium removal. The pH had a significant effect on the COD removal at the ratio of 237:1, but showed no dramatic effect at the ratio of 18:1, giving ∼40% of COD removal at all pHs tested. This indicates that electro-oxidation at the ratio of 18:1 could be effectively conducted at a wide range of pH. Furthermore, the optimum ammonium removal was obtained at pH 8.5 with the ratio of 237:1. This process was found to be ineffective in increasing the biodegradability index of the leachate; instead, it exhibited mineralization of organic content.

The role of chemisorbed hydroxyl species in alkaline electrocatalysis of glycerol on gold

2015 ◽  
Vol 17 (17) ◽  
pp. 11432-11444 ◽  
Author(s):  
X. Shi ◽  
D. E. Simpson ◽  
D. Roy
Keyword(s):  
Electro Oxidation

Products of glycerol electro-oxidation have been tracked by constructing a “voltammetric registry” of electron-counts from the activated reaction steps.

Significant Role of Ru-Oxide Present in the Pt-Ru Alloy Catalyst for Ethanol Electro-Oxidation in Acid Medium

2011 ◽  
Vol 26 (2) ◽  
pp. 261-271 ◽  
Author(s):  
J. Datta ◽  
S. Sen Gupta ◽  
S. Singh ◽  
S. Mukherjee ◽  
M. Mukherjee
Keyword(s):  
Acid Medium ◽  
Significant Role ◽  
Electro Oxidation ◽  
Alloy Catalyst

scholarly journals Understanding nanoparticle porosity via nanoimpacts and XPS: electro-oxidation of platinum nanoparticle aggregates

2017 ◽  
Vol 19 (21) ◽  
pp. 13547-13552 ◽  
Author(s):  
Xue Jiao ◽  
Eden E. L. Tanner ◽  
Stanislav V. Sokolov ◽  
Robert G. Palgrave ◽  
Neil P. Young ◽  
...  
Keyword(s):  
Platinum Nanoparticle ◽  
Internal Surfaces ◽  
Nanoparticle Aggregates ◽  
Electro Oxidation

The role of internal surfaces of platinum nano-aggregates in their electroactivity and catalysis is revealed.

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