Back to Search
Start Over
Anchoring DTPA grafted PEI onto carboxylated graphene oxide to effectively remove both heavy metal ions and dyes from wastewater with robust stability.
- Source :
-
Journal of Materials Science . Nov2021, Vol. 56 Issue 32, p18061-18077. 17p. 1 Black and White Photograph, 3 Diagrams, 8 Charts, 6 Graphs. - Publication Year :
- 2021
-
Abstract
- Highly efficient adsorbents, which can effectively remove both metal ions and dyes from wastewater with robust stability, are strongly required for the remediation of current polluted aqueous system, but still a challenge to be realized. Herein, a new adsorbent has been designed to solve this problem by anchoring diethylene triamine pentaacetic acid (DTPA) grafted polyethyleneimine (PEI) onto carboxylated GO (GOC-g-PD). Given the amino and carboxyl active groups from PEI and GOC/DTPA, our GOC-g-PD displays good adsorption capacity against not only inorganic metal ions (Cu2+ and Pb2+) but also organic dye (methylene blue: MB). The maximum adsorption capacity of GOC-g-PD for Cu2+, Pb2+ and MB reached 309.60 mg·g−1, 316.17 mg·g−1 and 262.10 mg·g−1, respectively. Furthermore, our GOC-g-PD also exhibits good cycling stability and chemical stability against wide pH values. These outstanding properties revealed our GOC-g-PD held great potential in purifying the sewage discharged from industries. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 56
- Issue :
- 32
- Database :
- Academic Search Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 152655498
- Full Text :
- https://doi.org/10.1007/s10853-021-06397-w