Figure 2

(a–b) TEM images of nanowires which were made up of (CTA)3(TBA)3P2W18O62. The inset shows the photo of gel formed by nanowires. (c–d) TEM images of nanowires which were made up of (CTA)3(TBA)3P2Mo18O62. The inset shows the photo of gel. (e) (high-angle annular dark-field scanning TEM) HAADF-STEM image of nanowires. (f) SEM image of nanowires.