A facile method to synthesize nZVI-doped polypyrrole-based carbon nanotube for Ag(i) removal-Reference-Cited by-同舟云学术

A facile method to synthesize nZVI-doped polypyrrole-based carbon nanotube for Ag(i) removal

Published:2023-01-01 Issue:1 Volume:12 Page:
ISSN:2191-9097
Container-title:Nanotechnology Reviews
language:en
Short-container-title:

Author:

Zhang Wen-Juan¹,Ding Ye-Zhi²,Wang Ya-Xian²,Wang You-Liang³,Fei Yu-Long²,Ran Meng-Yu²

Affiliation:

1. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology , Lanzhou , 730050 , China

2. Department of Materials Science and Engineering, Lanzhou University of Technology , Lanzhou , 730050 , China

3. School of Mechanical and Electrical Engineering, Lanzhou University of Technology , Lanzhou , 730050 , China

Abstract

Abstract The pollution of silver ion (Ag(i)) has become a serious environmental threat and hazard to ecosystem and human health. Thus, the nanoscale zero valent iron (nZVI)-doped polypyrrole-based carbon nanotube (nZVI/CNT) composites were synthesized by a facile method to remove Ag(i) from wastewater due to the toxicity and scarcity nature of Ag(i). In this process, Fe3+ initiated the self-assembly of polypyrrole tubes in the presence of methyl orange, while it also served as an iron source generated nZVI/CNTs by carbothermal reduction method. The nZVI/CNT composites exhibited a homogeneous tubular structure, and the nZVI formed were uniformly dispersed in the nZVI/CNT composites. The nZVI/CNT composites were used as an adsorbent for the removal of Ag(i) and showed a higher adsorption capacity compared to nZVI and CNTs, with a maximum adsorption capacity of 522.41 mg g−1. Ag(i) was adsorbed on nZVI/CNT composites by ion exchange and chelation, where Ag(i) was reduced to non-toxic Ag due to the redox reaction among pyrrolic-N, nZVI, and Ag(i). The adsorption process of Ag(i) on nZVI/CNT composites was dominated by monolayer adsorption. According to our results, nZVI/CNT composites can be used as economical treatment for wastewater containing Ag(i).

Publisher

Walter de Gruyter GmbH

Subject

Surfaces, Coatings and Films,Process Chemistry and Technology,Energy Engineering and Power Technology,Biomaterials,Medicine (miscellaneous),Biotechnology

Link

https://www.degruyter.com/document/doi/10.1515/ntrev-2023-0114/pdf

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