Fig. 3: Characterization of mesocrystal.
From: Transformation of siderite to goethite by humic acid in the natural environment
Representative TEM (a) and HRTEM (b–f) images of the precipitate of siderite after reacting with HA; schematic diagrams of goethite (g and i) and siderite (h) unit cell structures, which were drawn by Diamond 3.2 software (Crystal Impact GbR, Germany). The lattice fringes of the yellow region in Fig. 3b was observed after 1 min (Fig. 3c) and 2 min (Fig. 3f), respectively. Samples were freeze-dried for 12 h after 1 days of aging.
