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(A) SEM image of Ag-Hes NPs, the insert was magnified SEM image of Ag-Hes NPs; (B)TEM image, the insert was TEM image of a single magnified Ag-Hes nanoparticle; (C) DLS size distribution of Ag-Hes NPs; (D) magnified HRTEM image of one Ag-Hes nanoparticle; (E) settlement experiment photos of Ag and Ag-Hes nanoparticles in water
