Sequential and Transient Electrocatalysis of Glucose Oxidation Reactions by Octahedral, Rhombic Dodecahedral, and Cubic Palladium Nanocrystals

Ye, Jyun-Sian; Hsu, Su-Yang; Lee, Chien‐Liang

doi:10.1016/j.electacta.2016.06.132

Cited by 19 publications

(8 citation statements)

References 60 publications

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“…This type of study is particularly interesting in shaped nanoparticles, for which a decrease in their particle size may produce a significant decrease in their preferential surface structure. For example, cubic particles of different sizes have been used for oxygen reduction, and glucose and formic acid oxidations (Erikson et al, 2011, 2016a; Shao et al, 2011b, 2013a; Vidal-Iglesias et al, 2012; Lüsi et al, 2016; Ye et al, 2016; Vara et al, 2017). Figure 7 shows the Cu UPD voltammetric profiles obtained with the sized controlled cubic Pd nanoparticles (~80, 20, and 10 nm) prepared in this work together with that of the spherical (~3 nm) Pd nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Surface Structure Characterization of Shape and Size Controlled Pd Nanoparticles by Cu UPD: A Quantitative Approach

et al. 2019

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The search for new surface sensitive probes that characterize the surface structure of shape and size-controlled nanoparticles is an interesting topic to properly understand the correlations between electrocatalytic properties and surface structure at the nanoscale. Herein, we report the use of Cu UPD to characterize, not only qualitatively but also quantitatively, the surface structure of different Pd nanoparticles with controlled particle shape and size. Thus, Pd nanoparticles with cubic, octahedral and rhombic dodecahedral shapes, that is, with preferential {100}, {111}, and {110} surface structures, respectively, were prepared. In addition, cubic Pd nanoparticles with different particles sizes and spherical (2–3 nm) Pd nanoparticles were also synthesized. Based on the Cu UPD results on Pd single crystals, a new approach is proposed to qualitatively and quantitatively determine the percentages of {100}, {111}, and {110} surface domains present at the surface of the different shape and size controlled Pd nanoparticles. The results reported clearly show the benefits of this Cu UPD to get detailed information of the surface structure of the nanoparticles according to their particle shape and size.

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Section: Resultsmentioning

confidence: 99%

Surface Structure Characterization of Shape and Size Controlled Pd Nanoparticles by Cu UPD: A Quantitative Approach

et al. 2019

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“…Another way to demonstrate this is by plotting the current density normalized by the corresponding electrochemical roughness factor (Figure S6). 31,32 The O 2 plasma treated sample exhibits the highest normalized current density at −1.0 V vs RHE. Additional parameters need to be considered in order to interpret the observed differences in current density.…”

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confidence: 97%

Plasma-Activated Copper Nanocube Catalysts for Efficient Carbon Dioxide Electroreduction to Hydrocarbons and Alcohols

et al. 2017

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Carbon dioxide electroreduction to chemicals and fuels powered by renewable energy sources is considered a promising path to address climate change and energy storage needs. We have developed highly active and selective copper (Cu) nanocube catalysts with tunable Cu(100) facet and oxygen/chlorine ion content by low-pressure plasma pretreatments. These catalysts display lower overpotentials and higher ethylene, ethanol, and n-propanol selectivity, resulting in a maximum Faradaic efficiency (FE) of ∼73% for C and C products. Scanning electron microscopy and energy-dispersive X-ray spectroscopy in combination with quasi-in situ X-ray photoelectron spectroscopy revealed that the catalyst shape, ion content, and ion stability under electrochemical reaction conditions can be systematically tuned through plasma treatments. Our results demonstrate that the presence of oxygen species in surface and subsurface regions of the nanocube catalysts is key for achieving high activity and hydrocarbon/alcohol selectivity, even more important than the presence of Cu(100) facets.

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“…0.585 and 0.615 V, which are too high for the potential of hydrogen desorption, may be assigned to the chemisorption of OHon {100} nanofacets of Pd cubes and {111} nanofacets of Pd Octs, respectively. 15,26 Since OHads is the essential reactant pair involved in oxidizing the carbonaceous intermediate species including CH3C*=O, CO and CHx during EOR, 23,27 and HO-CH2C*=O, CO and CHxO during EGOR, 6 the Pd…”

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confidence: 99%

Electrocatalytic oxidation of ethanol and ethylene glycol on cubic, octahedral and rhombic dodecahedral palladium nanocrystals

Chen

Wang

et al. 2018

Chem. Commun.

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Cubic, octahedral and rhombic dodecahedral Pd nanocrystals were synthesized and examined as nanocatalysts for electro-oxidation of ethanol and ethylene glycol. Combined electrochemical measurements and density functional theory calculations reveal that nanofacet-dependent affinity and reactivity of OH and CO are closely linked to the C2 alcohol oxidation activities, with the highest reactivity found on the Pd nanocubes bounded by {100} facets.

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Sequential and Transient Electrocatalysis of Glucose Oxidation Reactions by Octahedral, Rhombic Dodecahedral, and Cubic Palladium Nanocrystals

Cited by 19 publications

References 60 publications

Surface Structure Characterization of Shape and Size Controlled Pd Nanoparticles by Cu UPD: A Quantitative Approach

Surface Structure Characterization of Shape and Size Controlled Pd Nanoparticles by Cu UPD: A Quantitative Approach

Plasma-Activated Copper Nanocube Catalysts for Efficient Carbon Dioxide Electroreduction to Hydrocarbons and Alcohols

Electrocatalytic oxidation of ethanol and ethylene glycol on cubic, octahedral and rhombic dodecahedral palladium nanocrystals

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