| Full text | |
| Author(s): |
Puppin, Lara G.
[1]
;
da Silva, Luis F.
[2]
;
Carmo, Marcelo
[3]
;
Varela, Hamilton
[1]
;
Lopes, Osmando F.
[1, 3, 4]
Total Authors: 5
|
| Affiliation: | [1] Univ Sao Paulo, Sao Carlos Inst Chem, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Lab Nanostruct Multifunct Mat, BR-13565905 Sao Carlos, SP - Brazil
[3] Forschungszentrum Julich, Inst Energy & Climate Res Electrochem Proc Engn I, D-52425 Julich - Germany
[4] Univ Fed Uberlandia, Inst Chem, Lab Photochem & Mat Sci, BR-38400902 Uberlandia, MG - Brazil
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Journal of Materials Research; v. 36, n. 20, SI, p. 4240-4248, OCT 28 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
CO2 electrochemical reduction reaction (CO2RR) is an attractive strategy for closing the anthropogenic carbon cycle and storing intermittent renewable energy. Tin-based electrocatalysts exhibit remarkable properties for reducing CO2 into HCOOH. However, the effects of morphology and oxidation state of tin-based electrocatalysts on the performance of CO2 reduction have not been well-described. We evaluate the oxidation state and particle size of SnO for CO2 reduction. SnOx was effective for converting CO2 into formic acid, reaching a maximum selectivity of 69%. The SnO exhibited high activity for CO2RR compared to SnO2 electrocatalysts. A pre-reduction step of a SnO2 electrocatalyst increased its CO2 reduction performance, confirming that Sn2+ is more active than Sn4+ sites. The microsized SnO2 is more effective for converting CO2 into formic acid than nanosized SnO2, likely due to the impurities of nanosized SnO2. We illuminated the role played by both SnO particle size and oxidation state on CO2RR performance. (AU) | |
| FAPESP's process: | 16/09746-3 - Electro-/Photoelectrocatalysis Reduction of CO2: Efficiency, Selectivity and Oscillatory Kinetics |
| Grantee: | Osmando Ferreira Lopes |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 13/16930-7 - Electrocatalysis V: electrocatalytic processes of chemical and electrical energy interconversion |
| Grantee: | Edson Antonio Ticianelli |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/09713-0 - Evaluation of efficiency and selectivity in CO2 electrocatalytic reduction of Sn and Bi deposited in carbon fiber |
| Grantee: | Lara Giraldelli Puppin |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 19/22183-6 - Electrocatalysis VI: fundamental and applied aspects of emerging and classical problems in electrochemical energy conversion |
| Grantee: | Edson Antonio Ticianelli |
| Support Opportunities: | Research Projects - Thematic Grants |