fig4
![K<sup>+</sup> promoted fabrication of nanoneedle low-silicon ZSM-48 mesocrystal](https://image.oaes.cc/2c2acab4-08da-4b5d-b0f9-35b47d34a254/cs3073.fig.4.jpg)
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.