Synthesis, characterization, and adsorption performance of novel acidic calixarene-modified LDH/polyaniline nanohybrid for efficient Cr(VI) removal.

ABSTRACT: Herein, aniline was oxidatively polymerized in the presence of modified Mg-Al/LDH to prepare an acidic calix[4]arene modified Mg-Al/LDH-polyaniline based nanohybrid (MLDH-NH₂@PANI). The prepared nanohybrid was studied using a variety of characterization techniques, including FT-IR, PXRD, TGA, FE-SEM, EDX-MAPP, and Zeta potential. To remove Cr(VI) from the aqueous solution, different parameters were examined, including pH, sorbent dosage, contact time, initial concentration of Cr(VI), and removal ability in the presence of interfering ions. The results showed that MLDH-NH₂ co-existence improved the active sites in MLDH-NH₂@PANI nanohybrid and reduced the agglomeration of polymeric chains. The pseudo-second-order model provided a better fitting for the Cr(VI)

SUBMITTER: Shafiei Navid S 

PROVIDER: S-EPMC12534502 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature