Carbon Nanoparticle‐Supported Pd Obtained by Solar Physical Vapor Deposition

Abstract

Palladium supported on carbon nanoparticles has been obtained on a specially designed ceramic catalyst, obtained by thermal spraying on a copper substrate, starting from Pd/C targets. Solar physical vapor deposition in argon, an environment-friendly and energy-efficient alternative to arc or chemical vapor deposition, has been employed as a means of target vaporization at CNRS-PROMES facility in Odeillo, France. e obtained nanoparticles have a spherical-porous morphology with diameters ranging from 50 to 120 nm and specific sorption areas of 50,000 m 2 /g. e XRD diffractograms indicate the presence of dominatingly crystalline short-range ordered graphene oxide layers, in contrast with the amorphous Pd/C starting precursor. e presence of palladium (0.6% wt.) at the surface of the nanoparticles was proved by the EDX and XRD analyses, making the synthesized material useful in applications such as catalysis or gas sorption.

Synthesis and Characterization of ZnO-Nanostructured Particles Produced by Solar Ablation

“…In this configuration, the collector can focus sunlight to a power of 1 kW. In the previously presented papers, the experimental collector generated two times more power [10][11][12][13].…”

“…Solar ablation (SA), also called solar physical vapor deposition (SPVD), was used to prepare ZnO, Zn1-xAlxO, Zn1-xCoxO, Zn1-xBixO, metallic Zn nanophases, TiO 2 and Fe, Co, Mn-doped TiO 2 [9] or ZrO 2 [10] in "heliotron" type solar reactors in 2 kW furnaces. Also, in the same solar furnace were synthesized carbon nanoparticles obtained starting from Pd/C [11], long single-walled nanotubes [12] using graphite as a precursor and carbon microparticles from polymer waste radiation [13].…”

Palladium nanoparticle deposition on spherical carbon supports for heterogeneous catalysis in continuous flow

“…11 Carbon-based supports, especially when used with precious metals such as Pd, Pt or Rh, have been reported to provide a highly active and chemically stable catalyst support surface. [12][13][14] Many types of carbon supports have been documented in the literature, including powders, foams, and pellets. [15][16][17] Larger supports lead to lower pressure drops across the reactor but typically cause a decrease in the active surface area, as well as inhomogeneity in the flow path through the catalyst bed, both decreasing the efficiency of the catalyst.…”

Metal-Based Nanomaterials: Work as Drugs and Carriers against Viral Infections

“…As one of the emerging fields in recent years, nanomaterials can be simply divided into one-dimensional, two-dimensional, and three-dimensional nanostructures according to the morphology of the material. There are many methods to synthesize nanomaterials, such as mechanical grinding synthesis [ 5 ], chemical vapor synthesis [ 6 ], chemical liquid reaction [ 7 ], physical vapor deposition [ 8 ], and phytosynthesis [ 9 , 10 ]. Among them, the phytosynthesis method is the most remarkable method of preparing nanoparticles now.…”