Figure 5

TEM analysis of the different catalyst types. (a) Fe-PANI-K, (b) Fe-pyPANI-K 700 °C, (c) Fe-pyPANI-K 700 °C AL, (d) Fe-pyPANI-K 700 °C AL after the second heat treatment. Inset image in (a) is more magnification image of as prepared Fe-PANI-K and scale bar is 20 nm.