FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4255999700> ?p ?o ?g. }

• W4255999700 endingPage "130" @default.
• W4255999700 startingPage "129" @default.
• W4255999700 abstract "Metallic nanoparticles made of more than one element (i.e. nanoalloys) are developed because they can present synergetic effects which enhance a wide range of properties in many fields of science such as reactivity, magnetic storage or medical imaging. Taking advantage of both alloying and size effects, the so‐called nanoalloys have considerably widened the technological potential of nanoparticles due to their tunability by size, shape and composition [1‐4]. The structural landscape of bi‐metallic nanoparticles is very rich: the structure and the state of mixing or segregation depend on multiple parameters leading to different structures (crystalline, non‐crystalline, alloyed, segregated, core shell, onion like, Janus…). Obtaining a complete and precise description of a single particle, and checking its representativeness, remain challenging and the latest developments in electron microscopy could contribute to address this key issue. The present study was done in an attempt to investigate the effects of composition, post –annealing treatment on the size‐dependent atomic arrangement in Pt‐Ag nanoparticles to study the phase diagram of this system at the nano‐scale. The availability of sub‐nanometer electron probes in a STEM and aberration corrected (Cs‐corrected) high resolution transmission electron microscopy (HRTEM), ensure great capabilities for the investigation of size, shape, structure and composition. PtAg nanoparticles were prepared by electron beam deposition of Pt and Ag on an amorphous carbon layer kept at room temperature during the deposition. The deposition rate was adjusted to reach an average composition of Ag‐52at%. Post deposition annealing treatment were carried out under ultrahigh vacuum at 673K. Figure 1 shows TEM and Cs‐corrected HRTEM images of the PtAg nanoparticles prepared at room temperature and after a post annealing treatment reaching 673K. After the room temperature deposition the particles are crystalline and ramified. This is due to static coaslescence effect: the consequence of high particle density on the carbon support. The post annealing treatment induces mobility of the atoms and particles and consequently Oswald ripening, dynamic coalescence and restructuration mechanisms leading to particles with a quasi‐spherical shape. EDX analysis performed on single particles shows an evolution of the particles composition after the annealing process. Moreover, after the post annealing treatment some particles present an alternating contrast on HRTEM images. This is confirmed on HAADF STEM images as shown on figure 2. The combination of HAADF images and EDX analysis on single particles have shown that structural and chemical configurations depend on the composition showing alloyed or core‐shell particles. Moreover a structural transformation from an alloyed disordered PtAg phase to an ordered L1 1 PtAg phase with the post annealing treatment was observed. This L1 1 phase appears for a very narrow interval of composition and presents some internal strains." @default.
• W4255999700 created "2022-05-12" @default.
• W4255999700 creator A5008163793 @default.
• W4255999700 creator A5025095187 @default.
• W4255999700 creator A5042578640 @default.
• W4255999700 creator A5051050227 @default.
• W4255999700 date "2016-12-20" @default.
• W4255999700 modified "2023-10-16" @default.
• W4255999700 title "Structural Transition of <scp>PtAg</scp> nanoalloys: annealing effect on atomic ordering and segregation" @default.
• W4255999700 cites W807959067 @default.
• W4255999700 doi "https://doi.org/10.1002/9783527808465.emc2016.6468" @default.
• W4255999700 hasPublicationYear "2016" @default.
• W4255999700 type Work @default.
• W4255999700 citedByCount "1" @default.
• W4255999700 countsByYear W42559997002023 @default.
• W4255999700 crossrefType "other" @default.
• W4255999700 hasAuthorship W4255999700A5008163793 @default.
• W4255999700 hasAuthorship W4255999700A5025095187 @default.
• W4255999700 hasAuthorship W4255999700A5042578640 @default.
• W4255999700 hasAuthorship W4255999700A5051050227 @default.
• W4255999700 hasBestOaLocation W42559997001 @default.
• W4255999700 hasConcept C127413603 @default.
• W4255999700 hasConcept C146088050 @default.
• W4255999700 hasConcept C155672457 @default.
• W4255999700 hasConcept C161368742 @default.
• W4255999700 hasConcept C171250308 @default.
• W4255999700 hasConcept C185592680 @default.
• W4255999700 hasConcept C191897082 @default.
• W4255999700 hasConcept C192562407 @default.
• W4255999700 hasConcept C2777855556 @default.
• W4255999700 hasConcept C42360764 @default.
• W4255999700 hasConcept C56052488 @default.
• W4255999700 hasConcept C8010536 @default.
• W4255999700 hasConceptScore W4255999700C127413603 @default.
• W4255999700 hasConceptScore W4255999700C146088050 @default.
• W4255999700 hasConceptScore W4255999700C155672457 @default.
• W4255999700 hasConceptScore W4255999700C161368742 @default.
• W4255999700 hasConceptScore W4255999700C171250308 @default.
• W4255999700 hasConceptScore W4255999700C185592680 @default.
• W4255999700 hasConceptScore W4255999700C191897082 @default.
• W4255999700 hasConceptScore W4255999700C192562407 @default.
• W4255999700 hasConceptScore W4255999700C2777855556 @default.
• W4255999700 hasConceptScore W4255999700C42360764 @default.
• W4255999700 hasConceptScore W4255999700C56052488 @default.
• W4255999700 hasConceptScore W4255999700C8010536 @default.
• W4255999700 hasLocation W42559997001 @default.
• W4255999700 hasOpenAccess W4255999700 @default.
• W4255999700 hasPrimaryLocation W42559997001 @default.
• W4255999700 hasRelatedWork W1629994647 @default.
• W4255999700 hasRelatedWork W1702904940 @default.
• W4255999700 hasRelatedWork W1975658350 @default.
• W4255999700 hasRelatedWork W2002793145 @default.
• W4255999700 hasRelatedWork W2010923507 @default.
• W4255999700 hasRelatedWork W2011115721 @default.
• W4255999700 hasRelatedWork W2027251933 @default.
• W4255999700 hasRelatedWork W2028793837 @default.
• W4255999700 hasRelatedWork W2182570332 @default.
• W4255999700 hasRelatedWork W2776002509 @default.
• W4255999700 isParatext "false" @default.
• W4255999700 isRetracted "false" @default.
• W4255999700 workType "other" @default.