Samarium hydroxide nanorod-based hydrophobic film and preparation process thereof

The invention discloses a samarium hydroxide nanorod-based hydrophobic film and a preparation process thereof. The film is prepared from samarium nitrate hexahydrate, urea, deionized water, ethanol, precursor samarium carbonate hydroxycarbonate, a sodium hydroxide solution and samarium hydroxide powder. Hydroxysamarium carbonate is used as a precursor to be subjected to a solid-liquid interface reaction with a sodium hydroxide aqueous solution in a liquid phase to prepare a samarium hydroxide nanorod, hydroxycarbonate is synthesized under a low-temperature condition, and then the samarium hydroxide nanorod is synthesized from the precursor and sodium hydroxide in a hydrothermal environment. A samarium hydroxide precipitate is generated on the surface of a precursor by utilizing a slow reaction between a samarium hydroxycarbonate precursor and a sodium hydroxide aqueous solution, the samarium hydroxide powder with a unique structure can realize super-hydrophobicity under the condition of not needing further hy