Hydrophobic Coatings Composed by Cubic-Shaped CdO Nanoparticles Grown by a Novel and Simple Microwave Method

Table 1

Contact angles of coated surfaces for several concentrations of the hydrophobic solution.

Coating type	Contact angles (°)		Ethanol : PTES ratio	Figure
	Left	Right
As-synthesized nanoparticles	113	112	—	Figure 6(a)
Annealed nanoparticles	91	84	—	Figure 6(b)
PTES-treated nanoparticles	149	144	100 : 1	Not shown
PTES-treated nanoparticles	156	152	20 : 1	Figure 6(c)
PTES-treated nanoparticles	157	158	12 : 1	Figure 6(d)