@article{repounp38395,
            year = {2020},
           title = {Synthesis and Characterization of Polystyrene/CuO-Fe{$_2$}O{$_3$} Nanocomposites from Natural Materials as Hydrophobic Photocatalytic Coatings},
       publisher = {MDPI},
          number = {1},
           month = {December},
         journal = {Crystals},
          volume = {11},
           pages = {1--12},
             url = {https://www.mdpi.com/2073-4352/11/1/31},
        abstract = {This study reports on the synthesis, characterization of polystyrene (PS)/CuO-Fe{$_2$}O{$_3$} nanocomposites, and their application as hydrophobic coatings. CuO and Fe{$_2$}O{$_3$} materials were synthesized from natural materials by the milling method. Meanwhile, the PS/CuO-Fe{$_2$}O{$_3$} nanocomposites were synthesized by the sol-gel method. Furthermore, the hydrophobic coating on the glass substrate was made by spin-coating. To obtain the highest value of contact angle, the composition of both CuO and Fe{$_2$}O{$_3$} in nanocomposite as well as calcination temperatures were varied. Sample characterization was conducted using XRD, SEM, and UV-Vis spectrophotometry. The sessile drop method was used to determine the contact angle. Results showed that PS/CuO-Fe{$_2$}O{$_3$} nanocomposite was successfully obtained with a crystal size between 40-52 nm and grain size of 92 nm. The highest contact angle was 125.46o at 3:1 composition and calcination temperature of 200 oC. The composite was hydrophobic, but photocatalyst activity was very small at 0.24\%.},
          author = {Ratnawulan, Ratnawulan and Ramli, Ramli and Fauzi, Ahmad and Hayati AE, Sukma},
            issn = {2073-4352},
        keywords = {Composite, Calcination Temperature, Contact Angle, Hydrophobic, Photocatalytic Coating}
}