fig1

Figure 1. (A) TEM image of Se nanosphere^[51]; Copyright 2014, Elsevier. (B) TEM image of Se nanoparticles^[52]; Copyright 2002, Wiley-VCH. (C) TEM image of Se nanowires^[53]; Copyright 2015, Elsevier. (D) TEM image of Se nanorods^[54]; Copyright 2004, Elsevier. (E) SEM image of Se nanotube^[55]; Copyright 2006, American Chemical Society. (F) TEM image of Se nanobelts^[56]; Copyright 2005, American Chemical Society. (G) TEM image of Se nanosheets^[57]; Copyright 2017, American Chemical Society. (H) AFM topography image of Se nanoflakes^[58]; Copyright 2017, Wiley-VCH. (I) Hexagonal structure existed in 0D and 1D Se nanomaterials^[57]; Copyright 2002, Wiley-VCH. (J) 1T-MoS₂-like structure and square structure existed in 2D Se nanomaterials^[60]; Copyright 2022, Springer.