2023年12月9日 · KNbO 3, a type of perovskite material, was widely developed for various devices due to its excellent light absorption properties, non-toxicity, chemical stability, ferroelectricity, and so on. As ferroelectric material, the KNbO 3 can generate a depolarized electric field for separation of photon-generated carriers.

2024年5月30日 · Transmission electron microscopy (TEM) micrographs of a KNbO 3 single crystal are shown in Figure 5. Figure 5a shows that the single crystal contains lamellar domains of up to 1 μm thickness aligned on (110) pc crystallographic planes, where pc means pseudo-cubic.

2020年8月8日 · The nanostructures and morphologies of pure KNbO 3 and CoO/KNbO 3 p-n heterojunction photocatalysts were investigated by SEM and TEM. The SEM images display that KNbO 3 is an irregular cube with a size of several hundred nanometers (Fig. 2 a) and the surface of KNbO 3 is evenly distributed with CoO nanoparticles (Fig. 2 b).

2018年4月1日 · KNbO 3 nanostructures in the form of nanotowers and nanocubes were obtained at reduced synthesis times (30–240 min). The products were characterized via XRD, Raman spectroscopy, SEM, and TEM; band gap calculations used diffuse reflectance data.

2017年3月25日 · Ferroelectric perovskite KNbO3 (KNO) nanosheets with cubic and orthorhombic phases were synthesized by a simple soft chemistry exfoliation at room temperature. KNO nanosheets could be simply obtained by peeling off the layered precursor K2 NbO 3F in water, while the phase structure of KNO could be controlled by using different precursors.

2020年12月18日 · The detailed structural features of the pristine Nb 2 O 5, Nb 2 O 5−x /KNbO 3−x and KNbO 3−x were investigated via high-resolution TEM analysis and the HRTEM images of the pristine Nb 2 O 5, Nb 2 O 5−x /KNbO 3−x and KNbO 3−x are shown in …

2019年4月1日 · Transmission electron microscopy (TEM) images and selected area electron diffraction (SAED) patterns were obtained using a FEI Talos F200X electron microscope with an acceleration voltage of 200 kV. The Raman spectra were acquired using a Horiba Scientific LabRAM HR evolution Raman spectrometer with a 532 nm laser.

Ag nanoparticles supported on well-defined perovskite orthorhombic KNbO3 nanowires are synthesized via facile photo-reduction and systematically characterized by XRD, Raman, DRUV-Vis, XPS, PL,...

2021年6月9日 · Growing demands for comprehending complicated nano-scale phenomena in atomic resolution has attracted in-situ transmission electron microscopy (TEM) techniques for understanding their dynamics. However, simple to safe TEM sample preparation for in-situ observation has been limited.

Download scientific diagram | High-resolution TEM image of the as-prepared KNbO 3 samples. Inset: FFT pattern. (A) HRTEM image of t-KNbO 3 MCs. (B) HRTEM image of o-KNbO 3 MCs.