Reversible formation of a PdCx phase in Pd nanoparticles upon CO and O2 exposure

2012 ◽  
Vol 14 (14) ◽  
pp. 4796 ◽  
Author(s):  
Olivier Balmes ◽  
Andrea Resta ◽  
Didier Wermeille ◽  
Roberto Felici ◽  
Maria E. Messing ◽  
...  
Keyword(s):  
Pd Nanoparticles ◽  
Reversible Formation

Droplet Factories: Synthesis and Assembly of Silver and Palladium Nanoparticles at the Liquid-Liquid Interface

2019 ◽  
Author(s):  
Suchanuch Sachdev ◽  
Rhushabh Maugi ◽  
Sam Davis ◽  
Scott Doak ◽  
Zhaoxia Zhou ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Reaction Rate ◽  
Tertiary Structure ◽  
Flow Reactor ◽  
Pd Nanoparticles ◽  
Subsequent Removal ◽  
Immiscible Liquids ◽  
Flow Reactors ◽  
Droplet Flow ◽  
One Step

<div>The interface between two immiscible liquids represent an ideal substrate for the assembly of nanomaterials. The defect free surface provides a reproducible support for creating densely packed ordered materials. Here a droplet flow reactor is presented for the synthesis and/ or assembly of nanomaterials at the interface of the emulsion. Each droplet acts as microreactor for a reaction between decamethylferrocene (DmFc) within the hexane and metal salts (Ag+/ Pd2+) in the aqueous phase. The hypothesis was that a spontaneous, interfacial reaction would lead to the assembly of nanomaterials creating a Pickering emulsion. The subsequent removal of the solvents showed how the Ag nanoparticles were trapped at the interface and retain the shape of the droplet, however the Pd nanoparticles were dispersed with no tertiary structure. To further exploit this, a one-step process where the particles are synthesised and then assembled into core-shell materials was proposed. The same reactions were performed in the presence of oleic acid stabilise Iron oxide nanoparticles dispersed within the hexane. It was shown that by changing the reaction rate and ratio between palladium and iron oxide a continuous coating of palladium onto iron oxide microspheres can be created. The same reaction with silver, was unsuccessful and resulted in the silver particles being shed into solution, or incorporated within the iron oxide micro particle. These insights offer a new method and chemistry within flow reactors for the creation of palladium and silver nanoparticles. We use the technique to create metal coated iron oxide nanomaterials but the methodology could be easily transferred to the assembly of other materials.</div><div><br></div>

The dependence of hydrogen storage properties on the sizes of Pd nanoparticles prepared by a solution-reduction method

2020 ◽  
Vol 60 (SA) ◽  
pp. SAAC05
Author(s):  
Masakuni Ozawa ◽  
Tatumi Todoroki ◽  
Hitoshi Kato ◽  
Masatomo Hattori
Keyword(s):  
Hydrogen Storage ◽  
Reduction Method ◽  
Pd Nanoparticles ◽  
Hydrogen Storage Properties ◽  
Storage Properties

scholarly journals Pd Nanoparticles Stabilized on the Cross-Linked Melamine-Based SBA-15 as a Catalyst for the Mizoroki–Heck Reaction

2021 ◽  
Author(s):  
Ayat Nuri ◽  
Abolfazl Bezaatpour ◽  
Mandana Amiri ◽  
Nemanja Vucetic ◽  
Jyri-Pekka Mikkola ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Inductively Coupled Plasma ◽  
High Surface ◽  
High Surface Area ◽  
Coupling Reaction ◽  
Pd Nanoparticles ◽  
Significant Activity ◽  
Inductively Coupled ◽  
Transmission Electron ◽  
Ft Ir

AbstractMesoporous SBA-15 silicate with a high surface area was prepared by a hydrothermal method, successively modified by organic melamine ligands and then used for deposition of Pd nanoparticles onto it. The synthesized materials were characterized with infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), nitrogen physisorption, scanning electron microscopy (SEM) coupled with energy dispersive X-ray analysis (EDX), transmission electron microscopy (TEM), nuclear magnetic resonance (NMR) and inductively coupled plasma (ICP-OES). The catalyst was effectively used in the Mizoroki–Heck coupling reaction of various reactants in the presence of an organic base giving the desired products in a short reaction time and with small catalysts loadings. The reaction parameters such as the base type, amounts of catalyst, solvents, and the temperature were optimized. The catalyst was easily recovered and reused at least seven times without significant activity losses. Graphic Abstract

scholarly journals ZnO coral-like nanoplates decorated with Pd nanoparticles for enhanced VOC gas sensing

2021 ◽  
Author(s):  
Chu Manh Hung ◽  
Lai Van Duy ◽  
Dang Thi Thanh Le ◽  
Hugo Nguyen ◽  
Nguyen Van Duy ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Pd Nanoparticles

Selective hydrogenation of phenol to cyclohexanone over Pd nanoparticles encaged hollow mesoporous silica catalytic nanoreactors

2021 ◽  
Vol 610 ◽  
pp. 117961
Author(s):  
Caoping Yang ◽  
Kaijie Li ◽  
Junyou Wang ◽  
Shenghu Zhou
Keyword(s):  
Mesoporous Silica ◽  
Selective Hydrogenation ◽  
Pd Nanoparticles ◽  
Hollow Mesoporous Silica

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 Hybrids of Pd Nanoparticles and Metal–Organic Frameworks for Enhanced Magnetism

2021 ◽  
pp. 4742-4748
Author(s):  
Suhwan Kim ◽  
Raeesh Muhammad ◽  
Peter Schuetzenduebe ◽  
Suresh Babu Kalidindi ◽  
Gisela Schütz ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Pd Nanoparticles ◽  
Metal Organic

Cu2O Cubes Decorated with Azine-Based Covalent Organic Framework Spheres and Pd Nanoparticles as Tandem Photocatalyst for Light-Driven Degradation of Chlorinated Biphenyls

2021 ◽  
Author(s):  
Ahmed E. ElMetwally ◽  
Elnaz Zeynaloo ◽  
Dharmendra Shukla ◽  
Bapurao Surnar ◽  
Shanta Dhar ◽  
...  
Keyword(s):  
Pd Nanoparticles ◽  
Covalent Organic Framework ◽  
Organic Framework
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