fig4

Figure 4. The SEM images of products synthesized by adding (A) NaCl, (B) LiCl and (C) KNO3, inset: XRD pattern of products; (D) N2 adsorption isotherm; and (E and F) TEM images of KNO3/0.2/48. SEM: Scanning electron microscope; XRD: X-ray diffraction; TEM: transmission electron microscope.