Surface properties of Ni(OH)2 and NiO. I. Water adsorption and heat of immersion of Ni(OH)2

Cation exchange removal of Zn from aqueous solution by NiO

“…The surface area of NiO is calculated to be 23 ± 2 m 2 g −1 which is comparable to the values reported by Tewari and Campbell [21] and Micale et al [22]. The PZC of NiO is observed to be 8.45 at 303 K which decreases to 8.09 at 323 K. The values of PZC are similar to the one reported for ZnO [23].…”

Removal of Co2+ ions from aqueous solution by cation exchange sorption onto NiO

“…The surface area of NiO determined by nitrogen gas adsorption is observed to be 23 ± 2 m 2 g −1 which is comparable to the value reported by Tewari and Campbell [13] and Micale et al [14]. The point of zero charge determined by salt addition method is observed to lie at pH 8.45 [12].…”

A short-range ordered–disordered transition of a NiOOH/Ni(OH)2 pair induces switchable wettability

“…3(b). 29 According to eqn. ( 1), the chemical reaction induces the composition change from NiOOH to Ni(OH) 2 when consistently supplied with water vapor.…”