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

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, $ Fe^{3+} $ 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)..

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:12

Enthalten in:

Nanotechnology reviews - 12(2023), 1 vom: 25. Okt.

Sprache:

Englisch

Beteiligte Personen:

Zhang, Wen-Juan [VerfasserIn]
Ding, Ye-Zhi [VerfasserIn]
Wang, Ya-Xian [VerfasserIn]
Wang, You-Liang [VerfasserIn]
Fei, Yu-Long [VerfasserIn]
Ran, Meng-Yu [VerfasserIn]

Links:

Volltext [kostenfrei]

BKL:

50.94 / Mikrosystemtechnik / Nanotechnologie

51.00 / Werkstoffkunde: Allgemeines

Anmerkungen:

© 2023 the author(s), published by De Gruyter

doi:

10.1515/ntrev-2023-0114

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

GRUY009274650