Fig. 1: SEM, TEM, XPS, XRD and wetting characterizations of IOS-PA. | NPG Asia Materials

Fig. 1: SEM, TEM, XPS, XRD and wetting characterizations of IOS-PA.

From: A universal, multifunctional, high-practicability superhydrophobic paint for waterproofing grass houses

Fig. 1

a SEM images of the coating. Two kinds of TiO2 NPs were found with average diameters of 21 nm and 200 nm. The inset shows a water drop on such surface. b–c TEM images of the coating show dual-sized TiO2 NPs with diameters of 200 nm (b) and 21 nm (c) coated by ER with thicknesses ranging from 1 nm to 3 nm. d The surface chemical compositions of the coatings were investigated by XPS, and the inset shows an enlarged view of Ti from the XPS results. e XPS O 1 s peaks (black line) of our coating. Deconvolution indicated the presence of Ti–O–Ti (brown line) and Ti–O–Si (blue line) bonds, showing that PFOS was also grafted onto the TiO2 NPs. f Dynamic contact angles on coated substrates (glass slide, fabric, wood, PS, and ceramic wafer). High-performance water droplets bouncing on the samples showed the strong water repellency of the coating. Scale bars: 100 nm (a), 20 nm (b), 10 nm (c), 1 mm (f).

Back to article page