Construction of the Heterostructure of NiPt Truncated Octahedral Nanoparticle/MoS<sub>2</sub> and Its Interfacial Structure Evolution
Congyan Mu,
Hao Li,
Liang Zhou,
Huanyu Ye,
Rongming Wang,
Yinghui Sun
Affiliations
Congyan Mu
Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Magneto−Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
Hao Li
Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Magneto−Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
Liang Zhou
Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Magneto−Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
Huanyu Ye
Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Magneto−Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
Rongming Wang
Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Magneto−Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
Yinghui Sun
Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Magneto−Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
Interfacial atomic configuration plays a vital role in the structural stability and functionality of nanocomposites composed of metal nanoparticles (NPs) and two−dimensional semiconductors. In situ transmission electron microscope (TEM) provides a real−time technique to observe the interface structure at atomic resolution. Herein, we loaded bimetallic NiPt truncated octahedral NPs (TONPs) on MoS2 nanosheets and constructed a NiPt TONPs/MoS2 heterostructure. The interfacial structure evolution of NiPt TONPs on MoS2 was in situ investigated using aberration−corrected TEM. It was observed that some NiPt TONPs exhibited lattice matching with MoS2 and displayed remarkable stability under electron beam irradiation. Intriguingly, the rotation of an individual NiPt TONP can be triggered by the electron beam to match the MoS2 lattice underneath. Furthermore, the coalescence kinetics of NiPt TONPs can be quantitatively described by the relationship between neck radius (r) and time (t), expressed as rn = Kt. Our work offers a detailed analysis of the lattice alignment relationship of NiPt TONPs on MoS2, which may enlighten the design and preparation of stable bimetallic metal NPs/MoS2 heterostructures.
