Poly(p-phenylenediamine)/maghemite composite as highly effective adsorbent for anionic dye removal

0517275 - ÚMCH 2021 RIV NL eng J - Journal Article
Minisy, Islam M. - Zasońska, Beata Anna - Petrovský, Eduard - Veverka, Pavel - Šeděnková, Ivana - Hromádková, Jiřina - Bober, Patrycja
Poly(p-phenylenediamine)/maghemite composite as highly effective adsorbent for anionic dye removal.
Reactive and Functional Polymers. Roč. 146, January (2020), s. 1-10, č. článku 104436. ISSN 1381-5148. E-ISSN 1873-166X
R&D Projects: GA ČR(CZ) GA18-04669S
Institutional support: RVO:61389013 ; RVO:67985530 ; RVO:68378271
Keywords : poly(p-phenylenediamine) * maghemite * dye removal
OECD category: Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; Physical geography (GFU-E); Polymer science (FZU-D)
Impact factor: 3.975, year: 2020
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S1381514819309204?via%3Dihub

Poly(p-phenylenediamine)/maghemite (PPDA/γ-Fe2O3) composites were prepared by the oxidative polymerization of p-phenylenediamine with ammonium peroxodisulfate as an oxidizing agent in the presence of γ-Fe2O3 nanoparticles. Morphology of the prepared composites was examined by the scanning and transmission electron microscopies. X-ray diffraction and EDX were used to study crystallinity and chemical composition, respectively. TGA demonstrated that only 7 and 45 wt% of γ-Fe2O3 were incorporated into PPDA prepared with 25 and 50 wt% of γ-Fe2O3, respectively. Adsorption property of the composites was examined towards the anionic dye, Reactive Black 5. The adsorption results were fitted to different kinetics and isotherm models. The highest adsorption capacity (Qmax) was estimated to be 223 mg g−1 in case of PPDA with the highest specific surface area (70.6 m2 g–1) prepared with 25 wt% of γ-Fe2O3. Qmax of neat PPDA was estimated to be 185.2 mg g−1 and 123.2 mg g−1 for PPDA prepared with 50 wt% of γ-Fe2O3. In addition to the enhancing of the adsorption capacity, the incorporation of γ-Fe2O3 particles provided an easy separation of the composites from the adsorption medium.
Permanent Link: http://hdl.handle.net/11104/0302867