File Name : fig. s1.tif

Caption : figure s1. typical morphology and structure of α-fe2o3 icositetrahedrons synthesized at the [h2po4]- concentration of about 0.01 mm (sample a). (a, b) sem and bright field tem images; (c-f) tem image, corresponding saed pattern, hrtem images and geometrical configuration pattern showing the [006] zone axis parallel to the electron beam; (g-k) tem image, corresponding saed pattern, hrtem images and geometrical configuration pattern showing the {113} and {110}surfaces parallel to the electron beam; (l-o) tem image, corresponding diffraction pattern, hrtem images and geometrical configuration pattern showing the {104} surfaces parallel to the electron beam when the same particle was tilted anticlockwise 30°.