Facilitating the C–C bond cleavage on sub-10 nm concavity-tunable Rh@Pt core–shell nanocubes for efficient ethanol electrooxidation

2019 ◽  
Vol 7 (30) ◽  
pp. 17987-17994 ◽  
Author(s):  
Pingting Li ◽  
Kai Liu ◽  
Jinyu Ye ◽  
Fei Xue ◽  
Yong Cheng ◽  
...  
Keyword(s):  
Bond Cleavage ◽  
Core Shell ◽  
Ethanol Electrooxidation ◽  
Atomic Steps

Concavity-tunable Rh@Pt core–shell nanocubes with an engineered Rh–Pt interface and Pt atomic steps facilitate C–C bond cleavage in the EOR.

On the Lack of Beneficial Role of Rh Towards C-C Bond Cleavage During Low Temperature Ethanol Electrooxidation on Pt-Rh Nanoalloys

2018 ◽  
Author(s):  
Justyna Piwowar ◽  
Adam Lewera
Keyword(s):  
Low Temperature ◽  
Electrode Potential ◽  
Ethanol Oxidation ◽  
Bond Cleavage ◽  
Ethanol Electrooxidation ◽  
Co Stripping ◽  
Beneficial Role ◽  
Bond Scission ◽  
Oxidation Of Ethanol

Numerous reports in scientific literature claim the increased activity of Rh-containing systems towards C-C bond scission in electrocatalytic oxidation of ethanol at ambient temperatures. Due to the claimed C-C bond breaking ability, Rh-containing systems are intensively investigated and widely recognized as the most promising candidates as anode materials for ethanol-feed low temperature fuel cells. This study aims at verifying the claim of beneficial role of Rh towards C-C bond scission during low temperature ethanol electrooxidation on Pt-Rh nanoparticles. We determined that the surface-normalized amounts of CO<sub>2 </sub>produced during ethanol oxidation are comparable on Pt, Rh and Pt-Rh nanoalloys, and smaller than CO<sub>2</sub> amounts obtained on exactly the same electrode from oxidation of monolayer of adsorbed CO. The whole amount of CO<sub>2</sub> detected during ethanol oxidation, regardless of Rh presence, or lack of thereof, seems to come exclusively from oxidation of submonolayer of CO<sub>ads</sub> produced during dissociative adsorption of ethanol at low electrode potential, and its subsequent oxidation at sufficiently high electrode potential. Our work suggest that Rh-containing alloys are not more active towards C-C bond scission than pure Pt, and on both metals the mechanism of oxidation of ethanol to CO<sub>2</sub> proceeds via the submonolayer of CO<sub>ads</sub>, which limits the quantity of CO<sub>2</sub> produced from ethanol at room temperature to negligible amount. The higher activity of Rh-containing materials towards C-C bond scission claimed in literature was determined to be due to overinterpretation of selectivity data.<br>To characterized the samples we used techniques like XPS, TEM, and cyclic voltammetry. For drove a conclusions we compere amount of CO<sub>2</sub> detected in DEMS during ethanol oxidation reaction and so called CO stripping experiment. <br><br>

One-pot synthesis of gold–palladium@palladium core–shell nanoflowers as efficient electrocatalyst for ethanol electrooxidation

2015 ◽  
Vol 278 ◽  
pp. 430-435 ◽  
Author(s):  
Xiaoyu Qiu ◽  
Yuxuan Dai ◽  
Yawen Tang ◽  
Tianhong Lu ◽  
Shaohua Wei ◽  
...  
Keyword(s):  
Core Shell ◽  
Ethanol Electrooxidation ◽  
One Pot ◽  
One Pot Synthesis

One-pot synthesis of Pd@Pt3Ni core–shell nanobranches with ultrathin Pt3Ni{111} skins for efficient ethanol electrooxidation

2018 ◽  
Vol 54 (41) ◽  
pp. 5185-5188 ◽  
Author(s):  
Yuanyuan Wang ◽  
Wei Wang ◽  
Fei Xue ◽  
Yong Cheng ◽  
Kai Liu ◽  
...  
Keyword(s):  
Core Shell ◽  
Ethanol Electrooxidation ◽  
One Pot ◽  
One Pot Synthesis

Pd@Pt3Ni core–shell nanobranches with ultrathin Pt3Ni{111} skins were facilely synthesized in one-pot and exhibited outstanding performances for ethanol electrooxidation.

scholarly journals A Phosphorus‐Doped Ag@Pd Catalyst for Enhanced CC Bond Cleavage during Ethanol Electrooxidation

Small ◽  
2020 ◽  
Vol 16 (47) ◽  
pp. 2004727
Author(s):  
Xiaobo Yang ◽  
Zaipeng Liang ◽  
Shuai Chen ◽  
Minjun Ma ◽  
Qiang Wang ◽  
...  
Keyword(s):  
Bond Cleavage ◽  
Pd Catalyst ◽  
Ethanol Electrooxidation ◽  
Phosphorus Doped

scholarly journals Combining the core-shell construction with an alloying effect for high efficiency ethanol electrooxidation

2021 ◽  
pp. 100357
Author(s):  
Danye Liu ◽  
Qing Zeng ◽  
Hui Liu ◽  
Chaoquan Hu ◽  
Dong Chen ◽  
...  
Keyword(s):  
High Efficiency ◽  
Core Shell ◽  
Ethanol Electrooxidation ◽  
Alloying Effect ◽  
The Core

Ordered PdCu-Based Core–Shell Concave Nanocubes Enclosed by High-Index Facets for Ethanol Electrooxidation

2021 ◽  
Author(s):  
Genlei Zhang ◽  
Yan Shi ◽  
Yan Fang ◽  
Dongjie Cao ◽  
Shiyu Guo ◽  
...  
Keyword(s):  
High Index ◽  
Core Shell ◽  
Ethanol Electrooxidation

Efficient C–C bond cleavage in ethanol electrooxidation on porous Pt catalysts

2011 ◽  
Vol 660 (1) ◽  
pp. 57-63 ◽  
Author(s):  
Qing-Yun Qian ◽  
Chen Yang ◽  
Yi-Ge Zhou ◽  
Si Yang ◽  
Xing-Hua Xia
Keyword(s):  
Bond Cleavage ◽  
Pt Catalysts ◽  
Ethanol Electrooxidation
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