Fig. 2: Characterization of the single-pass processed materials. | NPG Asia Materials

Fig. 2: Characterization of the single-pass processed materials.

From: A batch-by-batch free route for the continuous production of black phosphorus nanosheets for targeted combination cancer therapy

Fig. 2

a Low- and high-magnification TEM images of the processed material. The low-magnification image shows crumpled structures, and the high-magnification images show characteristic lattices, demonstrating the formation of BP NSs. The images also reveal Au and Sn crystallites dotted on the BP surfaces. b Digital images of synthesized BP NSs and detected XPS spectra of P 2p, Au 4f, and Sn 3d in the NSs. The XPS results also exhibit BP and Au–Sn corresponding to the high-resolution TEM image (A). c 3D and 2D AFM topographs with topological profiles. The dots on the planar nanostructure correspond to a Au–Sn-decorated BP NS, which was verified by TEM measurements. Size distributions of the processed material in the absence (RP–I+Au–Sn) and presence (BP) of the high-temperature (650 °C wall temperature) reaction measured using SMPS (d) and DLS systems (e). The SMPS measurements also show individual RP–I and Au–Sn and the high-temperature reaction-induced size redistribution. f Changes in the zeta potential during the LbL process. The negative surface charges of the BP NSs were suitable to electrostatically bind to amine groups of D. L addition changed the surface potential to have positive polarity, which enabled subsequent binding to H, resulting in the formation of BP-DLH

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