scholarly journals Surface softening in palladium nanoparticles: effects of a capping agent on vibrational properties

Nanoscale ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 5876-5887 ◽  
Author(s):  
Luca Rebuffi ◽  
Binayak Mukherjee ◽  
Stefano Siboni ◽  
Allison P. Young ◽  
Benjamin P. Williams ◽  
...  
Keyword(s):  
Palladium Nanoparticles ◽  
Surface Region ◽  
Pd Nanoparticles ◽  
Vibrational Properties ◽  
Capping Agent ◽  
Static Disorder

The presence of a capping agent (CTAB) on Pd nanoparticles produces a strong static disorder in the surface region.

Facile and green cinchonidine-assisted synthesis of ultrafine and well-dispersed palladium nanoparticles supported on activated carbon with high catalytic performance

RSC Advances ◽  
2015 ◽  
Vol 5 (92) ◽  
pp. 75272-75280 ◽  
Author(s):  
Trung Tran Si Bui ◽  
Yeonwoo Kim ◽  
Sehun Kim ◽  
Hangil Lee
Keyword(s):  
Activated Carbon ◽  
Green Synthesis ◽  
Palladium Nanoparticles ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Capping Agent ◽  
Supported Palladium

We report the facile and green synthesis of activated carbon-supported palladium (Pd/AC) containing homogeneously dispersed Pd nanoparticles (Pd NPs) by using eco-friendly and naturally available cinchonidine (CD) as the capping agent.

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...

scholarly journals Synthesis of monodisperse Pd nanoparticles using a binary surfactant combination and sodium oleate as reductant

2021 ◽  
Author(s):  
Anna Pekkari ◽  
Xin Wen ◽  
Jessica Orrego Hernandez ◽  
Robson Rosa da Silva ◽  
Shun Kondo ◽  
...  
Keyword(s):  
Sodium Oleate ◽  
Palladium Nanoparticles ◽  
Pd Nanoparticles

Palladium nanoparticles (NPs) are relevant for a broad range of applications such as sensing and catalysis. This study presents the synthesis of monodisperse Pd nanoparticles (NPs) stabilized by sodium oleate...

Preparation and enhanced electrocatalytic activity of graphene supported palladium nanoparticles with multi-edges and corners

RSC Advances ◽  
2016 ◽  
Vol 6 (101) ◽  
pp. 98708-98716 ◽  
Author(s):  
Zhelin Liu ◽  
Yinghui Feng ◽  
Xiaofeng Wu ◽  
Keke Huang ◽  
Shouhua Feng ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electrocatalytic Activity ◽  
Palladium Nanoparticles ◽  
Pd Nanoparticles ◽  
Reduced Graphene ◽  
Point Discharge ◽  
Supported Palladium ◽  
Activity Point

Pd nanoparticles with multi-edges and corners are prepared and assembled on reduced graphene oxide to examine the electrocatalytic activity. Point discharge is regarded to be capable of facilitating the electron transfer.

scholarly journals The Multifunctional Roles of Chitosan in the Formation of Flower-Shaped Palladium Nanoparticles

2021 ◽  
Vol 3 (1) ◽  
pp. 18
Author(s):  
Thi Tuong Vy Phan
Keyword(s):  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Human Health ◽  
Palladium Nanoparticles ◽  
Pd Nanoparticles ◽  
The Novel ◽  
Natural Polymers ◽  
Green Method ◽  
Harmful Effects

The chemical and physical routes are usually used to synthesize metal nanoparticles. However, the harmful effects on the environment and human health has turned scientists into finding greener methods. We have developed the novel green method for the synthesis of flower Pd nanoparticles based on the chitosan (CS) polymer. In this method, CS can work as a stabilizer, a shape-directing agent, and a size-controllable agent for the synthesis of these nanoparticles. This study provides pioneer evidence about the multifunctional roles of natural polymers in the preparation of metal nanoparticles. Deep and extensive studies should be conducted to explore the great benefits of natural polymers in the green synthesis of metal nanoparticles.

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.

Sub-5 nm palladium nanoparticles in situ embedded in N-doped carbon nanoframes: facile synthesis, excellent sinter resistance and electrocatalytic properties

2019 ◽  
Vol 7 (46) ◽  
pp. 26243-26249 ◽  
Author(s):  
Xian Jiang ◽  
Jiaxin Wang ◽  
Tan Huang ◽  
Gengtao Fu ◽  
Yawen Tang ◽  
...  
Keyword(s):  
Palladium Nanoparticles ◽  
Pd Nanoparticles ◽  
Facile Synthesis ◽  
Electrocatalytic Properties ◽  
Electrocatalytic Performance

N-carbon nanoframes embedded with sub-5 nm Pd nanoparticles are prepared through a 1-naphthylamine-driven pyrolysis strategy and exhibit excellent bifunctional electrocatalytic performance.

scholarly journals Effect of Carbon Support, Capping Agent Amount, and Pd NPs Size for Bio-Adipic Acid Production from Muconic Acid and Sodium Muconate

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 505
Author(s):  
Sofia Capelli ◽  
Davide Motta ◽  
Claudio Evangelisti ◽  
Nikolaos Dimitratos ◽  
Laura Prati ◽  
...  
Keyword(s):  
Adipic Acid ◽  
Activated Carbons ◽  
Carbon Support ◽  
Pd Nanoparticles ◽  
Protective Agent ◽  
Capping Agent ◽  
Muconic Acid ◽  
Acid Yield ◽  
Substrate Conversion ◽  
Effect Of Support

The effect of support, stabilizing agent, and Pd nanoparticles (NPs) size was studied for sodium muconate and t,t-muconic acid hydrogenation to bio-adipic acid. Three different activated carbons (AC) were used (Norit, KB, and G60) and carbon morphology did not affect the substrate conversion, but it greatly influenced the adipic acid yield. 1% Pd/KB Darco catalyst, which has the highest surface area and Pd surface exposure, and the smallest NPs size displayed the highest activity. Furthermore, the effect of the amount of the protective agent was studied varying metal/protective agent weight ratios in the range of 1/0.00–1/1.20, using KB as the chosen support. For sodium muconate reduction 1% Pd/KB_1.2 catalyst gave the best results in terms of activity (0.73 s−1), conversion, and adipic acid yield (94.8%), while for t,t-muconic acid hydrogenation the best activity result (0.85 s−1) was obtained with 1% Pd/KB_0.0 catalyst. Correlating the results obtained from XPS and TEM analyses with catalytic results, we found that the amount of PVA (polyvinyl alcohol) influences mean Pd NPs size, Pd(0)/Pd(II) ratio, and Pd surface exposure. Pd(0)/Pd(II) ratio and Pd NPs size affected adipic acid yield and activity during sodium muconate hydrogenation, respectively, while adipic acid yield was related by exposed Pd amount during t,t-muconic acid hydrogenation. The synthesized catalysts showed higher activity than commercial 5% Pd/AC.

Ultrafine Pd Nanoparticles Synthesis and Catalytic Performance in Methane Partial Oxidation

2011 ◽  
Vol 284-286 ◽  
pp. 1905-1908
Author(s):  
Bao Song Fu ◽  
Hu Liu ◽  
Guo Min Xiao
Keyword(s):  
Partial Oxidation ◽  
Palladium Nanoparticles ◽  
Oxidation Reaction ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Methane Partial Oxidation ◽  
Narrow Size Distribution ◽  
Pd Nanoparticle ◽  
Partial Oxidation Reaction ◽  
Nanoparticles Synthesis

Narrow size distribution Palladium nanoparticles was synthesized by adding Pd precursor into a modified PMHS polymer solution, and then jelled by aluminium. The multi-functional polymer was characterized by NMR; Pd nanoparticle samples were characterized by TEM and catalytic activity was tested in methane partial oxidation reaction.

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