Immobilization of nZVI particles on cotton fibers for rapid decolorization of organic dyes

Autor: Weilin Xu, Jingjing Huang, Jun Chen, Ruquan Zhang, Shili Xiao, Yuhui Yang, Pengjun Xu
Rok vydání: 2021
Předmět:
Zdroj: Cellulose. 28:7925-7940
ISSN: 1572-882X
0969-0239
DOI: 10.1007/s10570-021-03993-6
Popis: Nanoscale zero-valent iron (nZVI) particles have been frequently used to treat pollutants as an excellent reactive nanomaterial in last two decades. However, loading nZVI particles on the substrate with large surface area, easy handling and in particular, production on a large scale is still a problem. Herein, a facile approach was developed for in-situ preparation of nanoscale zero-valent iron (nZVI) particles on cotton fibers at room temperature. The cotton fabric was firstly oxidized to generate carboxylic groups for complexing ferric ions. Then, nZVI particles were immobilized on cotton fabric by reducing agent sodium borohydride. The nZVI immobilized cotton fabric (nZVI@cotton fabric) was thoroughly characterized and could decolorize more than 96% methylene blue and brilliant green within 40 min, respectively. The sorption isotherm study revealed that the reactive sorption of methylene blue on nZVI@cotton fabric fits the Freundlich model. The degradation intermediates of methylene blue were identified by HPLC/MS and possible degradation pathway was proposed. The method of immobilizing nZVI particles on carboxylated cotton fibers may be promising to prepare fibrous, easy handling reactive compounds for environmental remediation.
Databáze: OpenAIRE
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