Ultra-small Pd nanoparticles derived from a supramolecular assembly for enhanced electrochemical reduction of CO2 to CO

2019 ◽  
Vol 55 (66) ◽  
pp. 9805-9808 ◽  
Author(s):  
Ruru Chen ◽  
Minna Cao ◽  
Weiguang Yang ◽  
Huimin Wang ◽  
Suyuan Zhang ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Palladium Nanoparticles ◽  
High Selectivity ◽  
Supramolecular Assembly ◽  
Pd Nanoparticles ◽  
Reduction Of Co2

Well-dispersed palladium nanoparticles based on a supramolecular assembly exhibit high selectivity, activity and stability for the conversion of CO2 to CO.

scholarly journals Ordered Mesoporous Carbon as a Support of Pd Catalysts for CO2 Electrochemical Reduction

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 912
Author(s):  
Sara Pérez-Rodríguez ◽  
Elena Pastor ◽  
María Jesús Lázaro
Keyword(s):  
Electrochemical Reduction ◽  
Active Sites ◽  
Pd Nanoparticles ◽  
Catalyst Supports ◽  
Mass Ratio ◽  
Pd Catalysts ◽  
Ordered Mesoporous Carbons ◽  
Ordered Mesoporous ◽  
Reduction Of Co2 ◽  
Average Size

Ordered mesoporous carbons (OMCs) have been used as catalyst supports of Pd nanoparticles for the electrochemical reduction of CO2 in 0.1 M KHCO3. OMC with tunable porosity and morphology were obtained by the hard-template approach using synthesized SBA-15 templates. SBA-15 materials were prepared using a mass ratio of the silica precursor (TEOS) and the surfactant (P123) of 2 or 5. After removing silica particles by a purification treatment with NaOH-ethanol or HF, different OMCs were obtained, with a developed porosity (up to 1050 m2 g−1) and ordered 2D hexagonal mesostructure (p6 mm). An increase in the TEOS/P123 ratio as well as the treatment with HF resulted in a decrease in the structural ordering of the materials. Pd nanoparticles with an average size of around 3 nm were deposited on the OMC. However, larger nanoparticles were also observed, especially for the materials obtained using a mass ratio TEOS/P123 of 5. Despite these differences, electrochemical experiments showed that CO2 was successfully reduced to other species (mainly COad) for all Pd/OMC electrocatalysts. These reduced species were adsorbed on Pd active sites, inhibiting the hydrogen evolution reaction.

Electrochemical reduction of CO2 towards multi-carbon products via a two-step process

2021 ◽  
Vol 6 (4) ◽  
pp. 612-628
Author(s):  
Xianbiao Fu ◽  
Jiahao Zhang ◽  
Yijin Kang
Keyword(s):  
Electrochemical Reduction ◽  
Production Rate ◽  
High Selectivity ◽  
Alternative Route ◽  
Step Process ◽  
Fuels And Chemicals ◽  
Reduction Of Co2 ◽  
Industrial Relevance

The two-step electroreduction of CO2 to multi-carbon products with a high selectivity and production rate of industrial relevance provides an alternative route for converting CO2 to fuels and chemicals.

Electrochemical reduction of CO2 to ethylene glycol on imidazolium ion-terminated self-assembly monolayer-modified Au electrodes in an aqueous solution

2015 ◽  
Vol 17 (39) ◽  
pp. 26072-26078 ◽  
Author(s):  
Jun Tamura ◽  
Akihiko Ono ◽  
Yoshitsune Sugano ◽  
Chingchun Huang ◽  
Hideyuki Nishizawa ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ethylene Glycol ◽  
Electrochemical Reduction ◽  
Self Assembly ◽  
High Selectivity ◽  
Reduction Of Co2 ◽  
Imidazolium Ion

The IL-based SAMs-modified Au electrodes have high selectivity of products from CO2 to ethylene glycol (a maximum of 87%).

Bronze alloys with tin surface sites for selective electrochemical reduction of CO2

2018 ◽  
Vol 54 (99) ◽  
pp. 13965-13968 ◽  
Author(s):  
Anthony Vasileff ◽  
Chaochen Xu ◽  
Lei Ge ◽  
Yao Zheng ◽  
Shi-Zhang Qiao
Keyword(s):  
Electrochemical Reduction ◽  
High Selectivity ◽  
High Concentration ◽  
Low Concentration ◽  
Surface Sites ◽  
Tin Bronze ◽  
Reduction Of Co2

Low concentration tin bronze alloys show high selectivity for CO2 electroreduction to CO, while high concentration tin bronze alloys show high selectivity for formate.

scholarly journals Highly efficient hydrogen sensors based on Pd nanoparticles supported on boron nitride coated ZnO nanowires

2019 ◽  
Vol 7 (14) ◽  
pp. 8107-8116 ◽  
Author(s):  
Matthieu Weber ◽  
Jin-Young Kim ◽  
Jae-Hyoung Lee ◽  
Jae-Hun Kim ◽  
Igor Iatsunskyi ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Thin Layer ◽  
Palladium Nanoparticles ◽  
High Selectivity ◽  
Pd Nanoparticles ◽  
Zno Nanowires ◽  
Hydrogen Sensors ◽  
Highly Efficient ◽  
Sensor Device

High selectivity and sensitivity were measured using a novel type of sensor device, based on ZnO nanowires (NWs) coated with a thin layer of boron nitride (BN) decorated with palladium nanoparticles (NPs).

Graphene Supported Tungsten Carbide as Catalyst for Electrochemical Reduction of CO2

2019 ◽  
Author(s):  
Sahithi Ananthaneni ◽  
Rees Rankin
Keyword(s):  
Tungsten Carbide ◽  
Electrochemical Reduction ◽  
Low Cost ◽  
Co2 Reduction ◽  
Platinum Group Metal ◽  
Reduction Reaction ◽  
Metal Carbides ◽  
Depth Study ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction

<div>Electrochemical reduction of CO2 to useful chemical and fuels in an energy efficient way is currently an expensive and inefficient process. Recently, low-cost transition metal-carbides (TMCs) are proven to exhibit similar electronic structure similarities to Platinum-Group-Metal (PGM) catalysts and hence can be good substitutes for some important reduction reactions. In this work, we test graphenesupported WC (Tungsten Carbide) nanocluster as an electrocatalyst for the CO2 reduction reaction. Specifically, we perform DFT studies to understand various possible reaction mechanisms and determine the lowest thermodynamic energy landscape of CO2 reduction to various products such as CO, HCOOH, CH3OH, and CH4. This in-depth study of reaction energetics could lead to improvements and develop more efficient electrocatalysts for CO2 reduction.<br></div>

Size-dependent Hydrogen trapping in Palladium nanoparticles

2021 ◽  
Author(s):  
Wang Liu ◽  
Yann Magnin ◽  
Georg Daniel Förster ◽  
Julie Bourgon ◽  
Thomas Len ◽  
...  
Keyword(s):  
Experimental Study ◽  
Theoretical Approach ◽  
Palladium Nanoparticles ◽  
Hydrogen Absorption ◽  
Pd Nanoparticles ◽  
Hydrogen Trapping ◽  
Size Dependent

We report an experimental study, supported by a theoretical approach based on simulations, to explore the phenomenon of H trapping in small Pd nanoparticles. Hydrogen absorption/desorption of a series of...

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