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An enhanced electrochemical CO2 reduction reaction on the SnOx–PdO surface of SnPd nanoparticles decorated on N-doped carbon fibers
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2020-10-28 , DOI: 10.1039/d0cy01437k Sreekanth Narayanaru 1, 2, 3, 4, 5 , Gopinathan M. Anilkumar 1, 2, 3, 4, 5 , Masaki Ito 6, 7, 8 , Takanori Tamaki 1, 2, 3, 4, 5 , Takeo Yamaguchi 1, 2, 3, 4, 5
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2020-10-28 , DOI: 10.1039/d0cy01437k Sreekanth Narayanaru 1, 2, 3, 4, 5 , Gopinathan M. Anilkumar 1, 2, 3, 4, 5 , Masaki Ito 6, 7, 8 , Takanori Tamaki 1, 2, 3, 4, 5 , Takeo Yamaguchi 1, 2, 3, 4, 5
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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.
中文翻译：
N掺杂碳纤维修饰的SnPd纳米颗粒在SnOx-PdO表面的电化学还原反应
在电催化的CO 2还原反应（CO 2 RR）中，锡基催化剂因甲酸甲法拉第产率高而著称。然而，需要更高的过电势来获得高法拉第产率和甲酸的高分电流密度。在这里，我们描述了通过添加少量的Pd，装饰在掺氮碳纤维（NCFs）上的Sn纳米颗粒的电催化CO 2 RR活性的增加。采用静电纺丝法合成了不同Sn∶Pd比的SnPd纳米粒子（Sn 100- y Pd y –NCF）修饰的掺氮碳纤维，并对其电催化CO 2 RR活性进行了研究。锡100- y具有3 wt％（y = 3）的Pd y –NCF催化剂对CO 2 RR表现出优异的活性，并且法拉第效率为85％，而带有Sn纳米颗粒（Sn 100 –NCF）的NCF效率仅为57％同样的潜力。催化剂的表面电子构型，Tafel斜率（79 mV dec -1）和碳酸氢盐的还原活性表明，催化剂表面上SnO x -PdO的结合可实现出色的CO 2 RR活性。
更新日期：2020-11-13
中文翻译：
N掺杂碳纤维修饰的SnPd纳米颗粒在SnOx-PdO表面的电化学还原反应
在电催化的CO 2还原反应（CO 2 RR）中，锡基催化剂因甲酸甲法拉第产率高而著称。然而，需要更高的过电势来获得高法拉第产率和甲酸的高分电流密度。在这里，我们描述了通过添加少量的Pd，装饰在掺氮碳纤维（NCFs）上的Sn纳米颗粒的电催化CO 2 RR活性的增加。采用静电纺丝法合成了不同Sn∶Pd比的SnPd纳米粒子（Sn 100- y Pd y –NCF）修饰的掺氮碳纤维，并对其电催化CO 2 RR活性进行了研究。锡100- y具有3 wt％（y = 3）的Pd y –NCF催化剂对CO 2 RR表现出优异的活性，并且法拉第效率为85％，而带有Sn纳米颗粒（Sn 100 –NCF）的NCF效率仅为57％同样的潜力。催化剂的表面电子构型，Tafel斜率（79 mV dec -1）和碳酸氢盐的还原活性表明，催化剂表面上SnO x -PdO的结合可实现出色的CO 2 RR活性。
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