scholarly journals Author Correction: Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method

2020 ◽  
Vol 12 (1) ◽  
pp. 101-102
Author(s):  
Bernd Cermenek ◽  
Boštjan Genorio ◽  
Thomas Winter ◽  
Sigrid Wolf ◽  
Justin G. Connell ◽  
...  
2020 ◽  
Vol 11 (2) ◽  
pp. 203-214
Author(s):  
Bernd Cermenek ◽  
Boštjan Genorio ◽  
Thomas Winter ◽  
Sigrid Wolf ◽  
Justin G. Connell ◽  
...  

AbstractDirect ethanol fuel cells (DEFC) still lack active and efficient electrocatalysts for the alkaline ethanol oxidation reaction (EOR). In this work, a new instant reduction synthesis method was developed to prepare carbon supported ternary PdNiBi nanocatalysts with improved EOR activity. Synthesized catalysts were characterized with a variety of structural and compositional analysis techniques in order to correlate their morphology and surface chemistry with electrochemical performance. The modified instant reduction synthesis results in well-dispersed, spherical Pd85Ni10Bi5 nanoparticles on Vulcan XC72R support (Pd85Ni10Bi5/C(II-III)), with sizes ranging from 3.7 ± 0.8 to 4.7 ± 0.7 nm. On the other hand, the common instant reduction synthesis method leads to significantly agglomerated nanoparticles (Pd85Ni10Bi5/C(I)). EOR activity and stability of these three different carbon supported PdNiBi anode catalysts with a nominal atomic ratio of 85:10:5 were probed via cyclic voltammetry and chronoamperometry using the rotating disk electrode method. Pd85Ni10Bi5/C(II) showed the highest electrocatalytic activity (150 mA⋅cm−2; 2678 mA⋅mg−1) with low onset potential (0.207 V) for EOR in alkaline medium, as compared to a commercial Pd/C and to the other synthesized ternary nanocatalysts Pd85Ni10Bi5/C(I) and Pd85Ni10Bi5/C(III). This new synthesis approach provides a new avenue to developing efficient, carbon supported ternary nanocatalysts for future energy conversion devices.


NANO ◽  
2017 ◽  
Vol 12 (09) ◽  
pp. 1750105 ◽  
Author(s):  
Meiling Peng ◽  
Tao Wang ◽  
Zhenzhen Jiang ◽  
Sheng Wang

In this work, a synthesis method of residue-free PdPt nanodendrites on reduced graphene oxide (rGO) is reported. Using UV light as an energy trigger and methanol as the reducing agent, PdPt nanodendrites are synthesized with clean, residue-free surfaces (e.g., surfactant and polymer). In comparison with commercial Pd/C and Pt/C catalysts, the as-prepared PdPt nanodendrites on rGO have a large electrochemically active surface area, enhanced catalytic activity, high stability, and tolerance toward the ethanol oxidation reaction in alkaline media. Among the nanodendrite composites prepared, those containing a Pd:Pt ratio of 1:2 on rGO exhibit the best stability and durability, and their mass activity is 2.0 and 2.4 times greater than those of commercial Pt/C and Pd/C catalysts, respectively. This strategy presents an environmentally friendly way to fabricate other noble metal catalysts with improved catalytic activity and stability for use in direct alcohol fuel cells.


2015 ◽  
Vol 7 (43) ◽  
pp. 23920-23931 ◽  
Author(s):  
Yiran Wang ◽  
Qingliang He ◽  
Jiang Guo ◽  
Jinmin Wang ◽  
Zhiping Luo ◽  
...  

2014 ◽  
Vol 117 ◽  
pp. 292-298 ◽  
Author(s):  
R.F.B. De Souza ◽  
J.C.M. Silva ◽  
M.H.M.T. Assumpção ◽  
A.O. Neto ◽  
M.C. Santos

2019 ◽  
Vol 570 ◽  
pp. 319-328 ◽  
Author(s):  
Magdalena Parlinska-Wojtan ◽  
Elżbieta Drzymała ◽  
Grzegorz Gruzeł ◽  
Joanna Depciuch ◽  
Mikołaj Donten ◽  
...  

2018 ◽  
Vol 12 (4) ◽  
pp. 501-508 ◽  
Author(s):  
S. Y. Shen ◽  
Y. G. Guo ◽  
G. H. Wei ◽  
L. X. Luo ◽  
F. Li ◽  
...  

2021 ◽  
Vol 9 ◽  
Author(s):  
Xingqiao Wu ◽  
Xiao Li ◽  
Yucong Yan ◽  
Sai Luo ◽  
Jingbo Huang ◽  
...  

Pt-based multimetallic nanorings with a hollow structure are attractive as advanced catalysts due to their fantastic structure feature. However, the general method for the synthesis of such unique nanostructures is still lack. Here we report the synthesis of Pd@PtM (M = Rh, Ni, Pd, Cu) multimetallic nanorings by selective epitaxial growth of Pt alloyed shells on the periphery of Pd nanoplates in combination with oxidative etching of partial Pd in the interior. In situ generation of CO and benzoic acid arising from interfacial catalytic reactions between Pd nanoplates and benzaldehyde are critical to achieve high-quality Pt-based multimetallic nanorings. Specifically, the in-situ generated CO promotes the formation of Pt alloyed shells and their epitaxial growth on Pd nanoplates. In addition, the as-formed benzoic acid and residual oxygen are responsible for selective oxidative etching of partial Pd in the interior. When evaluated as electrocatalysts, the Pd@PtRh nanorings exhibit remarkably enhanced activity and stability for ethanol oxidation reaction (EOR) compared to the Pd@PtRh nanoplates and commercial Pt/C due to their hollow nanostructures.


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