Superhydrophobicity, Microwave Absorbing Property of NiFe₂O₄/Wood Hybrids under Harsh Conditions

Figure 8

Magnetic hysteresis loops and WCAs of the specimens after being treated with pH = 1 (a), pH = 14 (b), and 3 M NaCl solutions (c) and frozen at −35°С (d), respectively.

(a)

(b)

(c)

(d)