scholarly journals Pd nanoparticles confined in mesoporous N-doped carbon silica supports: a synergistic effect between catalyst and support

2020 ◽  
Vol 10 (5) ◽  
pp. 1385-1394 ◽  
Author(s):  
Rafael L. Oliveira ◽  
Julius Kerstien ◽  
Reinhard Schomäcker ◽  
Arne Thomas
Keyword(s):  
Synergistic Effect ◽  
Palladium Nanoparticles ◽  
Nitrogen Doping ◽  
Carbon Materials ◽  
Pd Nanoparticles ◽  
Silica Supports ◽  
Mesocellular Foam Silica

Palladium nanoparticles of similar size were deposited on different supports, layers of carbon materials (with and without nitrogen doping) on the surface of a MCF (mesocellular foam) silica.

scholarly journals Laminar N-Doped Carbon Materials from a Biopolymer for Use as a Catalytic Support for Hydrodechlorination Catalysts

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3107
Author(s):  
Cristina Ruiz-Garcia ◽  
Miguel A. Gilarranz
Keyword(s):  
Nitrogen Doping ◽  
Carbon Materials ◽  
Pd Nanoparticles ◽  
Catalyst Supports ◽  
Total Removal ◽  
Carbon And Nitrogen ◽  
Catalytic Support ◽  
Lamellar Morphology ◽  
Metallic Salts ◽  
Chitosan Biopolymer

Nitrogen-doped porous carbons were prepared using a chitosan biopolymer as both a carbon and nitrogen precursor and metallic salts (CaCl2 and ZnCl2-KCl) as a templating agent with the aim of evaluating their performance as catalyst supports. Mixtures of chitosan and templating salts were prepared by simple grinding subjected to pyrolysis and finally washed with water to remove the salts. The resulting materials were characterized, showing that homogeneous nitrogen doping of carbon was achieved (7–9% wt.) thanks to the presence of a nitrogen species in the chitosan structure. A lamellar morphology was developed with carbon sheets randomly distributed and folded on themselves, creating slit-shaped pores. Substantial porosity was observed in both the micropore and mesopore range with a higher surface area and microporosity in the case of the materials prepared by ZnCl2-KCl templating and a larger size of mesopores in the case of ZnCl2. Catalysts with well-dispersed Pd nanoparticles (around 10 nm in diameter size) were synthesized using the chitosan-based carbons obtained both by salt templating and direct chitosan pyrolysis and tested in the aqueous phase hydrodechlorination of 4-chlorophenol. The fast and total removal of 4-chlorophenol was observed in the case of catalysts based on carbons obtained by templating with CaCl2 and ZnCl2-KCl in spite of the low metal content of the catalysts (0.25% Pd, wt.).

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.

Oxygen reduction reaction on Pd nanoparticles supported on novel mesoporous carbon materials

2021 ◽  
pp. 139132
Author(s):  
Madis Lüsi ◽  
Heiki Erikson ◽  
Kaido Tammeveski ◽  
Alexey Treshchalov ◽  
Arvo Kikas ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Mesoporous Carbon ◽  
Carbon Materials ◽  
Pd Nanoparticles ◽  
Reduction Reaction ◽  
Mesoporous Carbon Materials

scholarly journals Ultrafine Pd Nanoparticles Anchored on Nitrogen-Doping Carbon for Boosting Catalytic Transfer Hydrogenation of Nitroarenes

ACS Omega ◽  
2018 ◽  
Vol 3 (9) ◽  
pp. 10843-10850 ◽  
Author(s):  
Longkang Zhang ◽  
Xiaotong Liu ◽  
Xin Zhou ◽  
Shutao Gao ◽  
Ningzhao Shang ◽  
...  
Keyword(s):  
Nitrogen Doping ◽  
Pd Nanoparticles ◽  
Transfer Hydrogenation ◽  
Catalytic Transfer Hydrogenation ◽  
Catalytic 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.

Semihydrogenation of Phenylacetylene Catalyzed by Palladium Nanoparticles Supported on Carbon Materials

2008 ◽  
Vol 112 (10) ◽  
pp. 3827-3834 ◽  
Author(s):  
Sonia Domínguez-Domínguez ◽  
Ángel Berenguer-Murcia ◽  
Bhabendra K. Pradhan ◽  
Ángel Linares-Solano ◽  
Diego Cazorla-Amorós
Keyword(s):  
Palladium Nanoparticles ◽  
Carbon Materials

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.

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