Example 1
链接见：https://doi.org/10.1016/j.apcatb.2020.119138
description: The TEM image in Fig. 1d shows that Ce@Fe-2 has a hollow tube structure and it is assembled from small nanoparticles tightly interrelated, while the HRTEM images (Fig. 1e-j) clearly display three sets of parallel fringes with lattice distances of 0.31 nm, 0.27 nm and 0.26 nm, which can be assigned to the (111) plane of CeO2, (104) plane of α-Fe2O3 and (002) plane of ZnO, respectively. [37–39] In addition, the EDX analysis results (Fig. 1k-n and S3) show that the even distribution of Ce, Fe, Zn and O around the selected area, which verifies that the α-Fe2O3 nanoparticles uniformly cover the surface of the hollow CeO2 and ZnO is almost removed during the deposition process. The TEM image of ZnO/CeO2 was also displayed (Figure S4).
Example 2
链接见：https://doi.org/10.1016/j.cclet.2021.12.039
description: The TEM image of 1.0%-Au/BOC is shown in Fig. 1a, which maintains the flower-shaped appearance of hollow structure of BOC stacked of nanosheets, where some nanoparticles with a diameter of 5–6 nm are distributed on the surface (Fig. 1b). In the HAADF-STEM images (Figs. 1c and d), two clear lattice plane spacings of 0.275 nm and 0.738 nm are shown, corresponding to the (110) and (001) of BiOCl, respectively. Fig. 1e shows a set of clear lattice plane spacing 0.235 nm, corresponding to the (111) lattice plane of Au0. Energy dispersive X-ray spectroscopy (EDS) further shows the distribution of elements. From Figs. 1f and g, it can beseen that the Bi, O, and Cl elements are uniformly distributed on the nanosheets, while the Au elements are mostly concentrated to form the nanoparticles. It proved that Au0 was successfully loaded onto BiOCl nanosheets.
Example 3
链接见：https://doi.org/10.1002/adma.201506197
description: The transmission electron microscopy (TEM) image shows an individual N-CNT covered by ZnCo2O4 quantum dots, while no unbonded nanoparticles can be observed, implying the good anchor-hold between ZnCo2O4 quantum dots and N-CNT (Figure 1c and Figure S4d (Supporting Information)), which is consistent with the SEM images. The high-resolution TEM image further confirms the anchoring of quantum dots on N-CNT (Figure 1d), in which the particle size of ZnCo2O4 quantum dots is centered at 3.0–3.5 nm, matching well with the statistical particle size distribution diagram (Figure 1c, inset); the distances of 0.233 and 0.204 nm, respectively, correspond to the (222) and (400) planes in the spinel ZnCo2O4 lattice (Figure 1e). The selected area electron diffraction (SAED) pattern (Figure 1f) and the fast Fourier transform (FFT) pattern (Figure 1g) deriving from the single ZnCo2O4 quantum dot (circled in Figure 1e) verify the spinel structure of ZnCo2O4. The energy dispersive X-ray spectroscopy (EDS) elemental mapping imagesof the ZnCo2O4/N-CNT reveal the homogeneous dispersion of different elements including Zn, Co, O, and C in the composite catalyst (Figure 1h and Figure S5a (Supporting Information)).
Example 4
链接见：https://doi.org/10.1002/ange.201907595
description: The NCNTs were uniformly decorated by metal oxide nanoparticles, without obvious agglomeration (Figures S2 andS3). Co2FeO4 shows the characteristic dspacing of 0.25 nm for the (311) latticeplanes; the corresponding fast Fourier transform (FFT) pattern is also consistent (Figure 1 f). In contrast, Co3O4 exhibits a smaller d-spacing of 0.24 nm for the (311) lattice, which in line with the XRD result (Figure S4). The selected area electron diffraction (SEAD) pattern of Co2FeO4 indicates that it is polycrystalline, consistent with the HRTEM observation (Figure 1g). In addition, the elemental mappings of Co2FeO4/NCNTs support the uniform distribution of Fe, Co, N, and C in the sample (Figure 1h), suggesting that Featoms are doped throughout the crystalline structure.
Example 5
链接见：https://www.science.org/doi/10.1126/sciadv.abf6667
description: An advanced TEM characterization technique, iDPC, was applied to reveal the atomic structures, particularly the light carbon atoms at the atomic resolution. The iDPC signal corresponds to the integrated phase shift in the beam direction so that bright spots can be simply interpreted as atomic columns (30), rendering it a better alternative of annular dark-field (ADF) to resolve lightweight atoms. A pair of concurrently recorded low-angle annular dark-field (LAADF) and iDPC images is presented in Fig. 1 (C and D), with the trilayer-like reconstructed interfacial regions highlighted by yellow color. The LAADF image only resolves the metal skeleton, while the iDPC image indicates that carbon atoms occupy the interstitial sites. Line profile analysis of the iDPC image (Fig. 1E) reveals a reconstructed interfacial trilayer with FCC (facecentered cubic) stacking sequences on the B plane, where the metal skeletons are octahedrally surrounded by interstitial carbon atoms. This proposed structure is further confirmed from another projection along [101¯0] (fig. S3).
A similar interfacial reconstruction is identified at the WC(P)-Co interfaces. As shown in the LAADF image (Fig. 1F), atomic ordering also occurs in a trilayer superstructure (the L¯1 to L1 layers). Partially ordered L2 or even L3 layers on the Co side could be discerned with low contrast. Carbon atoms are clearly resolved in the WC lattice, while they are absent in the interstitial sites of the superstructures (Fig. 1G). Thus, the WC(P)-Co interface exhibits a reconstructed interfacial trilayer with BCC (body-centered cubic) stacking sequence (Fig. 1H), which is further confirmed from the [2¯1¯10] projection (fig. S4). Such BCC-like interfacial trilayers consisting of a pure metallic framework have not been reported before (25, 28, 31)
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