Magnetite@poly(p-phenylenediamine) core-shell composite modified with salicylaldehyde for adsorption and separation of Mn (VII) from polluted water

Zheng, Mingming, Ren, Jiajia, Wang, Chuanjin, Ma, Yong, Ding, Jianxu, Li, Tingxi, Elnaggar, Ashraf, El Azab, Islam, Mahmoud, M.H.H., El-Bahy, Salah, Seok, IIwoo, Naik, Nithesh, Roymahapatra, Gourisankar, Murugadoss, Vignesh, Huang, Mina, Xu, Bin and Guo, Zhanhu (2022) Magnetite@poly(p-phenylenediamine) core-shell composite modified with salicylaldehyde for adsorption and separation of Mn (VII) from polluted water. Journal of Nanostructure in Chemistry, 12 (6). pp. 1155-1168. ISSN 2193-8865

AAM.pdf - Accepted Version

Download (1MB) | Preview
Official URL:


Magnetite@poly-p-phenylenediamine (Fe3O4@PpPD) composite modified with salicylaldehyde (SA) was fabricated as adsorbent to remove Mn (VII) from wastewater. The Fe3O4 microspheres endow the adsorbent with the ability of rapid solid–liquid separation. The PpPD with acid and alkali resistance can protect Fe3O4 from corrosion while introducing a large amount of N atoms to adsorb Mn (VII). The introduction of SA increases the specific surface area and adsorption sites of the adsorbent. The effects of pH, time and temperature on the adsorption process were studied. At pH = 2, the maximum adsorption capacity (Q) is as high as 148.34 mg g−1, which is attributed to the complexation/chelation and electrostatic interaction between amino and hydroxyl groups and Mn (VII). It is found that the adsorption process conforms to the pseudo-second-order kinetic model and Langmuir isotherm model. Thermodynamics studies demonstrate that the adsorption is a spontaneous endothermic process. After four adsorption cycle tests, the adsorption capacity losses only 1%. Moreover, high adsorption efficiency in river water and mixed metal ions’ solution prove that the prepared Fe3O4@PpPD-SA composite possesses excellent Q in removing Mn (VII).

Item Type: Article
Additional Information: Funding information: We gratefully appreciate the support of the Natural Science Foundation of Shandong (ZR2019BB063). The author gratitude the environmental and function material team, supported by the Project of Shandong Province Higher Educational Young Innovative Talent Introduction and Cultivation. The authors would like to thank Zhu Dejing from Shiyanjia Lab ( for the BET analysis. The authors gratefully acknowledge financial support from Taif University Researchers Supporting Project number (TURSP-2020/32), Taif University, Taif, Saudi Arabia.
Uncontrolled Keywords: Magnetic adsorbent, Fe3O4 microspheres, Poly-p-phenylenediamine, Salicylaldehyde, Mn (VII)
Subjects: F100 Chemistry
F200 Materials Science
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Rachel Branson
Date Deposited: 08 Aug 2022 13:00
Last Modified: 20 Aug 2023 03:30

Actions (login required)

View Item View Item


Downloads per month over past year

View more statistics