We developed a “green” corn stalk adsorbent treated by thiosemicarbazide–glutaraldehyde.
Adsorption mechanism of AgCli1−i could be electrostatic interaction with CSH+N and CSH+ group.
The gel could selectively adsorb AgCli1−i coordination anion from the Ag(I)–Cu(II)–Ni(II) simulate nickel electrolyte.