Regular ArticleElectrokinetics and Wettability of Huebnerite and Ferberite☆

Add time:08/26/2019    Source:sciencedirect.com

With the crystal structure parameters and crystal field stabilization energy of lattice cations, the Yoon–Salman–Donnay equation is used to calculate the theoretical point of zero charges (pzc) of huebnerite and ferbrite. The calculated pzc of 2.8 and 2.0, respectively, are in excellent agreement with the isoelectric point determined experimentally. The anisotropic wettability of ferberite (001), (010), and (100) crystal planes in sodium oleate solutions is observed. The number of fractured Mn–O or Fe–O bonds on (001), (010), and (100) planes of ferberite is found to be 65.0, 62.6, and 47.1 per nm2, respectively, which reflects the order of decreasing hydrophobicity of these crystal planes in sodium oleate solutions.

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