Journal article
Surface Self-Diffusion Induced Sintering of Nanoparticles
ACS nano, v 18(45), pp 31160-31173
12 Nov 2024
PMID: 39485068
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Despite the critical role of sintering phenomena in constraining the long-term durability of nanosized particles, a clear understanding of nanoparticle sintering has remained elusive due to the challenges in atomically tracking the neck initiation and discerning different mechanisms. Through the integration of in situ transmission electron microscopy and atomistic modeling, this study uncovers the atomic dynamics governing the neck initiation of Pt-Fe nanoparticles via a surface self-diffusion process, allowing for coalescence without significant particle movement. Real-time imaging reveals that thermally activated surface morphology changes in individual nanoparticles induce significant surface self-diffusion. The kinetic entrapment of self-diffusing atoms in the gaps between closely spaced nanoparticles leads to the nucleation and growth of atomic layers for neck formation. This surface self-diffusion-driven sintering process is activated at a relatively lower temperature compared to the classic Ostwald ripening and particle migration and coalescence processes. The fundamental insights have practical implications for manipulating the morphology, size distribution, and stability of nanostructures by leveraging surface self-diffusion processes.
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Details
- Title
- Surface Self-Diffusion Induced Sintering of Nanoparticles
- Creators
- Xiaobo Chen - Binghamton UniversityCan Li - Binghamton UniversityBoyang Li - University of PittsburghYubin Ying - Drexel UniversityShuonan Ye - Binghamton UniversityDmitri N. Zakharov - Brookhaven National LaboratorySooyeon Hwang - Brookhaven National LaboratoryJiye Fang - Binghamton UniversityGuofeng Wang - University of PittsburghYong-Jie Hu - Drexel University, Materials Science and EngineeringGuangwen Zhou - Binghamton University
- Publication Details
- ACS nano, v 18(45), pp 31160-31173
- Publisher
- Amer Chemical Soc
- Number of pages
- 14
- Grant note
- NSF; National Science Foundation (NSF) DE-SC0012704 / National Science Foundation; National Science Foundation (NSF) U.S. DOE Office of Science User Facility at Brookhaven National Laboratory; United States Department of Energy (DOE) DMR 1808383; DMR-2347030 / National Science Foundation (NSF) under the NSF Collaborative Research Award; National Science Foundation (NSF) 2138259; 2138286; 2138307; 2137603; 2138296 / Drexel University DMR 1905422; 1905572 / Division of Materials Research; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:001348859600001
- Scopus ID
- 2-s2.0-85208372796
- Other Identifier
- 991021934015604721
UN Sustainable Development Goals (SDGs)
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology