Search: onr:"swepub:oai:DiVA.org:kth-235112" >
Activation of comme...
Activation of commercial Pt/C catalyst toward glucose electro-oxidation by irreversible Bi adsorption
-
- Kanninen, Petri (author)
- KTH,Tillämpad elektrokemi,Aalto Univ, Dept Chem & Mat Sci, POB 16100, Aalto 00076, Finland
-
- Kallio, Tanja (author)
- Aalto Univ, Dept Chem & Mat Sci, POB 16100, Aalto 00076, Finland.
-
(creator_code:org_t)
- Elsevier, 2018
- 2018
- English.
-
In: Journal of Energy Challenges and Mechanics. - : Elsevier. - 2056-9386. ; 27:5, s. 1446-1452
- Related links:
-
https://research.aal...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- The effect of irreversibly adsorbed Bi on commercial Pt/C catalyst toward glucose electro-oxidation reaction (GOR) in different electrolytes (acidic, neutral, alkaline) is studied. Bi is successfully deposited on Pt/C from Bi3+ containing acidic solution from 0 to 90% coverage degree. The stability of the Bi layer in acid and alkaline corresponded to previous studies and started to dissolve at 0.7 V and 0.8 V versus reversible hydrogen electrode (RHE), respectively. However, in neutral phosphate buffer the layer showed remarkable stability to at least 1.2 V versus RHE. Bi modification at low (20%) and high (80%) coverage showed the highest increase in the activity of Pt/C toward GOR by a factor up to 7 due to the increased poisoning resistance of the modified catalyst. The effect of poisoning was especially reduced at high Bi coverage (80%), which shows that adsorbate blocked by Bi through the third-body effect is effective. Finally, with or without Bi modification GOR on Pt/C was most active in alkaline conditions.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Annan kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Other Chemical Engineering (hsv//eng)
Keyword
- Glucose electro-oxidation
- Platinum
- Bismuth
- Catalyst poisoning
- Renewable resources
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database