Controllable preparation of tungsten/tungsten carbide nanowires or nanodots in nanostructured carbon with hollow macroporous core/mesoporous shell

Ren Xiao-Na, Xia Min^†, Yan Qing-Zhi, Ge Chang-Chun^‡

FESEM images of the encapsulated AMT. Panels (a) and (c) show the secondary electron images, panels (b) and (d) present the corresponding backscatter electron images in panels (a) and (c) respectively.