Oscillating Dynamics of Migrating Cu–Pd Bimetallic Particles in the Catalytic Redox Reaction
Increasing evidence from <i>in situ</i> investigations discloses that nanoparticles (NPs) undergo reconstruction and migration during catalytic redox reactions. Insights into the driving mechanism are significant but remain rare for understanding NP-localized reaction kinetics while atte...
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| مؤلفون آخرون: | , , , , , , , , |
| منشور في: |
2025
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| _version_ | 1852015833652396032 |
|---|---|
| author | Qiao Zhao (445424) |
| author2 | Shuhui Liu (495053) Zhenghao Jia (12280693) Guanghui Zhang (450175) Changcheng Xu (22420707) Zhibin Yu (1450102) Fan Zhang (46132) Shaobo Han (1918909) Xinwen Guo (1408723) Wei Liu (20030) |
| author2_role | author author author author author author author author author |
| author_facet | Qiao Zhao (445424) Shuhui Liu (495053) Zhenghao Jia (12280693) Guanghui Zhang (450175) Changcheng Xu (22420707) Zhibin Yu (1450102) Fan Zhang (46132) Shaobo Han (1918909) Xinwen Guo (1408723) Wei Liu (20030) |
| author_role | author |
| dc.creator.none.fl_str_mv | Qiao Zhao (445424) Shuhui Liu (495053) Zhenghao Jia (12280693) Guanghui Zhang (450175) Changcheng Xu (22420707) Zhibin Yu (1450102) Fan Zhang (46132) Shaobo Han (1918909) Xinwen Guo (1408723) Wei Liu (20030) |
| dc.date.none.fl_str_mv | 2025-10-13T14:09:31Z |
| dc.identifier.none.fl_str_mv | 10.1021/acs.jpclett.5c02480.s004 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/media/Oscillating_Dynamics_of_Migrating_Cu_Pd_Bimetallic_Particles_in_the_Catalytic_Redox_Reaction/30346827 |
| dc.rights.none.fl_str_mv | CC BY-NC 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Biophysics Medicine Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified Information Systems not elsewhere classified spatially asymmetric distribution localized reaction kinetics coordinated corner sites attenuating catalyst coarsening copper redox reaction catalytic redox reactions oscillatory migration starts np migration coarsening 2 </ sub redox atmosphere understanding np x </ situ </ continuous migration work comprehends unraveled non undergo reconstruction sub >< remain rare oscillating dynamics microscopy results investigations discloses intrinsic nature driving force depth understanding asynchronous diffusion ></ sub |
| dc.title.none.fl_str_mv | Oscillating Dynamics of Migrating Cu–Pd Bimetallic Particles in the Catalytic Redox Reaction |
| dc.type.none.fl_str_mv | Dataset Media info:eu-repo/semantics/publishedVersion dataset |
| description | Increasing evidence from <i>in situ</i> investigations discloses that nanoparticles (NPs) undergo reconstruction and migration during catalytic redox reactions. Insights into the driving mechanism are significant but remain rare for understanding NP-localized reaction kinetics while attenuating catalyst coarsening. Herein, tracking the restructuring of Cu–Pd bimetallic NPs in a redox atmosphere through environmental transmission electron microscopy, we unraveled non-equilibrium oscillating dynamics facilitating the continuous migration of a tadpole-like Cu<sub><i>x</i></sub>Pd/Cu<sub>2</sub>O nanostructure. The spatially asymmetric distribution of Cu–Pd bimetallic and Cu<sub>2</sub>O phases within individual NP dictates its movement under the driving force of the copper redox reaction. Time-resolved microstructure tracking revealed that this oscillation was caused by the asynchronous diffusion of H<sub>2</sub>/O<sub>2</sub> reactants. <i>In situ</i> microscopy results further evidenced that the oscillatory migration starts from the oxidation of Cu atoms into Cu<sub>2</sub>O at low-coordinated corner sites of the Cu–Pd NP. This work comprehends the mechanism of widely observed catalytic NP oscillation and migration, which inspires an in-depth understanding of the intrinsic nature of NP migration coarsening. |
| eu_rights_str_mv | openAccess |
| id | Manara_b7e212f7bb7bb1ff460ffd7984da4d33 |
| identifier_str_mv | 10.1021/acs.jpclett.5c02480.s004 |
| network_acronym_str | Manara |
| network_name_str | ManaraRepo |
| oai_identifier_str | oai:figshare.com:article/30346827 |
| publishDate | 2025 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY-NC 4.0 |
| spelling | Oscillating Dynamics of Migrating Cu–Pd Bimetallic Particles in the Catalytic Redox ReactionQiao Zhao (445424)Shuhui Liu (495053)Zhenghao Jia (12280693)Guanghui Zhang (450175)Changcheng Xu (22420707)Zhibin Yu (1450102)Fan Zhang (46132)Shaobo Han (1918909)Xinwen Guo (1408723)Wei Liu (20030)BiophysicsMedicineEnvironmental Sciences not elsewhere classifiedBiological Sciences not elsewhere classifiedChemical Sciences not elsewhere classifiedPhysical Sciences not elsewhere classifiedInformation Systems not elsewhere classifiedspatially asymmetric distributionlocalized reaction kineticscoordinated corner sitesattenuating catalyst coarseningcopper redox reactioncatalytic redox reactionsoscillatory migration startsnp migration coarsening2 </ subredox atmosphereunderstanding npx </situ </continuous migrationwork comprehendsunraveled nonundergo reconstructionsub ><remain rareoscillating dynamicsmicroscopy resultsinvestigations disclosesintrinsic naturedriving forcedepth understandingasynchronous diffusion></ subIncreasing evidence from <i>in situ</i> investigations discloses that nanoparticles (NPs) undergo reconstruction and migration during catalytic redox reactions. Insights into the driving mechanism are significant but remain rare for understanding NP-localized reaction kinetics while attenuating catalyst coarsening. Herein, tracking the restructuring of Cu–Pd bimetallic NPs in a redox atmosphere through environmental transmission electron microscopy, we unraveled non-equilibrium oscillating dynamics facilitating the continuous migration of a tadpole-like Cu<sub><i>x</i></sub>Pd/Cu<sub>2</sub>O nanostructure. The spatially asymmetric distribution of Cu–Pd bimetallic and Cu<sub>2</sub>O phases within individual NP dictates its movement under the driving force of the copper redox reaction. Time-resolved microstructure tracking revealed that this oscillation was caused by the asynchronous diffusion of H<sub>2</sub>/O<sub>2</sub> reactants. <i>In situ</i> microscopy results further evidenced that the oscillatory migration starts from the oxidation of Cu atoms into Cu<sub>2</sub>O at low-coordinated corner sites of the Cu–Pd NP. This work comprehends the mechanism of widely observed catalytic NP oscillation and migration, which inspires an in-depth understanding of the intrinsic nature of NP migration coarsening.2025-10-13T14:09:31ZDatasetMediainfo:eu-repo/semantics/publishedVersiondataset10.1021/acs.jpclett.5c02480.s004https://figshare.com/articles/media/Oscillating_Dynamics_of_Migrating_Cu_Pd_Bimetallic_Particles_in_the_Catalytic_Redox_Reaction/30346827CC BY-NC 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/303468272025-10-13T14:09:31Z |
| spellingShingle | Oscillating Dynamics of Migrating Cu–Pd Bimetallic Particles in the Catalytic Redox Reaction Qiao Zhao (445424) Biophysics Medicine Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified Information Systems not elsewhere classified spatially asymmetric distribution localized reaction kinetics coordinated corner sites attenuating catalyst coarsening copper redox reaction catalytic redox reactions oscillatory migration starts np migration coarsening 2 </ sub redox atmosphere understanding np x </ situ </ continuous migration work comprehends unraveled non undergo reconstruction sub >< remain rare oscillating dynamics microscopy results investigations discloses intrinsic nature driving force depth understanding asynchronous diffusion ></ sub |
| status_str | publishedVersion |
| title | Oscillating Dynamics of Migrating Cu–Pd Bimetallic Particles in the Catalytic Redox Reaction |
| title_full | Oscillating Dynamics of Migrating Cu–Pd Bimetallic Particles in the Catalytic Redox Reaction |
| title_fullStr | Oscillating Dynamics of Migrating Cu–Pd Bimetallic Particles in the Catalytic Redox Reaction |
| title_full_unstemmed | Oscillating Dynamics of Migrating Cu–Pd Bimetallic Particles in the Catalytic Redox Reaction |
| title_short | Oscillating Dynamics of Migrating Cu–Pd Bimetallic Particles in the Catalytic Redox Reaction |
| title_sort | Oscillating Dynamics of Migrating Cu–Pd Bimetallic Particles in the Catalytic Redox Reaction |
| topic | Biophysics Medicine Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified Information Systems not elsewhere classified spatially asymmetric distribution localized reaction kinetics coordinated corner sites attenuating catalyst coarsening copper redox reaction catalytic redox reactions oscillatory migration starts np migration coarsening 2 </ sub redox atmosphere understanding np x </ situ </ continuous migration work comprehends unraveled non undergo reconstruction sub >< remain rare oscillating dynamics microscopy results investigations discloses intrinsic nature driving force depth understanding asynchronous diffusion ></ sub |