Fig. 2. Influence of ligands on the time-dependent formation of Ni precipitates as investigated by the 2 band position: (a) Ni sorption on low surface area gibbsite with different citrate/Ni ratios; (b) Ni sorption on low surface area gibbsite, high surface area gibbsite, and pyrophyllite in the presence and absence of citrate; (c) Ni sorption on low surface area gibbsite, high surface area gibbsite, and pyrophyllite in the presence and absence of salicylate