| Autor: |
Gopinathan M. Anilkumar, Takanori Tamaki, Masaki Ito, Sreekanth Narayanaru, Takeo Yamaguchi |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Catalysis Science & Technology. 11(No. 1):143-151 |
| Popis: |
In the electrocatalytic CO2 reduction reaction (CO2RR), tin-based catalysts are known for their high formate faradaic yield. However higher overpotentials are required to attain a high faradaic yield with high partial current density for formate. Here, we describe the increase in the electrocatalytic CO2RR activity of Sn nanoparticles decorated on nitrogen-doped carbon fibers (NCFs) by adding a small amount of Pd. Nitrogen-doped carbon fibers decorated with SnPd nanoparticles (Sn100−yPdy–NCF) of different Sn : Pd ratios were synthesized using the electrospinning method and their electrocatalytic CO2RR activity was studied. The Sn100−yPdy–NCF catalyst with 3 wt% (y = 3) Pd displayed superior activity for the CO2RR and attained a faradaic efficiency of 85%, whereas the NCF with Sn nanoparticles (Sn100–NCF) attained only 57% efficiency at the same potential. The surface electronic configuration, Tafel slope (79 mV dec−1) and bicarbonate reduction activity of the catalyst reveal that the combination of SnOx–PdO on the catalyst surface is responsible for the superior CO2RR activity. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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