TY - JOUR
T1 - Green, Sustainable Synthesis of γ-Fe2O3/MWCNT/Ag Nano-Composites Using the Viscum album Leaf Extract and Waste Car Tire for Removal of Sulfamethazine and Bacteria from Wastewater Streams
AU - Khalatbary, Mansooreh
AU - Sayadi, Mohammad Hossein
AU - Hajiani, Mahmood
AU - Nowrouzi, Mohse
AU - Homaeigohar, Shahin
N1 - Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
PY - 2022/8/15
Y1 - 2022/8/15
N2 - Multi-walled carbon nanotubes (MWCNTs) decorated with Ag nanoparticles (NPs) are bifunctional adsorbent nanomaterials with antibacterial activity. They can be magnetically recovered from wastewater in case of coupling with γ-Fe
2O
3. In this study, for the first time, an environmentally friendly technique was applied to prepare a nanocomposite (NC) material composed of γ-Fe
2O
3/MWCNT/Ag by using Bridgestone disposable tires and Viscum album leaves extract. γ-Fe
2O
3/MWCNTs/Ag NC was employed for the removal of sulfamethazine (SMT) from aqueous solutions. Under the optimized conditions determined via the Taguchi method, the highest SMT adsorption capacity of the γ-Fe
2O
3/MWCNT/Ag NC was measured to be 47.6 mg/g. The experimental data fitted well with the pseudo-second-order kinetic model and the Langmuir isotherm. The thermodynamic parameters implied that the adsorption process was endothermic. In addition to adsorption of the drug pollutant, the NC demonstrated a superior antibacterial activity against Gram-positive bacteria. The reusability test also showed that over 79% SMT can be removed using γ-Fe
2O
3/MWCNTs/Ag NC even after four adsorption cycles. Taken together, γ-Fe
2O
3/MWCNTs/Ag NC was proven to be a promising antibacterial nano-adsorbent for wastewater treatment.
AB - Multi-walled carbon nanotubes (MWCNTs) decorated with Ag nanoparticles (NPs) are bifunctional adsorbent nanomaterials with antibacterial activity. They can be magnetically recovered from wastewater in case of coupling with γ-Fe
2O
3. In this study, for the first time, an environmentally friendly technique was applied to prepare a nanocomposite (NC) material composed of γ-Fe
2O
3/MWCNT/Ag by using Bridgestone disposable tires and Viscum album leaves extract. γ-Fe
2O
3/MWCNTs/Ag NC was employed for the removal of sulfamethazine (SMT) from aqueous solutions. Under the optimized conditions determined via the Taguchi method, the highest SMT adsorption capacity of the γ-Fe
2O
3/MWCNT/Ag NC was measured to be 47.6 mg/g. The experimental data fitted well with the pseudo-second-order kinetic model and the Langmuir isotherm. The thermodynamic parameters implied that the adsorption process was endothermic. In addition to adsorption of the drug pollutant, the NC demonstrated a superior antibacterial activity against Gram-positive bacteria. The reusability test also showed that over 79% SMT can be removed using γ-Fe
2O
3/MWCNTs/Ag NC even after four adsorption cycles. Taken together, γ-Fe
2O
3/MWCNTs/Ag NC was proven to be a promising antibacterial nano-adsorbent for wastewater treatment.
KW - γ-Fe2O3/MWCNTs/Ag nanocomposite
KW - sulfamethazine
KW - antibacterial activity
KW - Taguchi design
KW - γ-Fe O /MWCNTs/Ag nanocomposite
UR - http://www.scopus.com/inward/record.url?scp=85137387976&partnerID=8YFLogxK
U2 - 10.3390/nano12162798
DO - 10.3390/nano12162798
M3 - Article
C2 - 36014663
SN - 2079-4991
VL - 12
JO - Nanomaterials
JF - Nanomaterials
IS - 16
M1 - 2798
ER -