Development of a PANI/Fe(NO₃)₂ nanomaterial for reactive orange 16 (RO16) dye removal

Abstract

Polyaniline–iron(ii) nitrate was prepared by the polymerization of aniline hydrochloride with Fe(NO3)2.

Surface-Enhanced Biocompatibility and Adsorption Capacity of a Zirconium Phosphate-Coated Polyaniline Composite

“…Comparison of the X-ray diffraction (XRD) patterns of the ZrPO 4 @PANI composite with that of pure PANI is shown in Figure b, where the typical reflection patterns observed for the composite are at 2θ of 11.7, 19.6, 34.2, and 37.98° corresponding to ZrPO 4 , while the diffraction patterns at 14.8, 20.3, 25.2, 27.4, and 29.9° are related to PANI. , However, for the pure PANI sample, the patterns are observed at 20.3°, 25.2°, and 27.4°, which indicate a highly ordered structure and crystallinity of the conducting polymer due to the continuous repetition of quinoid and benzenoid rings. Also, for the composite, the observation of two reflection patterns at 14.8 and 29.9° indicates that the PANI chain maintains the parallel and perpendicular periodicity. , The results indicate that the polymer bonding with metal phosphate does not affect the crystalline structure of PANI. Because some of the diffraction patterns of PANI coincide with the ZrPO 4 patterns, all the patterns related to individual components are not seen and in addition, no impurity patterns are observed, thereby confirming the purity.…”

“…Also, for the composite, the observation of two reflection patterns at 14.8 and 29.9°indicates that the PANI chain maintains the parallel and perpendicular periodicity. 19,20 The results indicate that the polymer bonding with metal phosphate does not affect the crystalline structure of PANI. Because some of the diffraction patterns of PANI coincide with the ZrPO 4 patterns, all the patterns related to individual components are not seen and in addition, no impurity patterns are observed, thereby confirming the purity.…”