Synthesis of magnetic MFe 2 O 4 (M = Ni, Co, Zn, Fe) supported on porous carbons derived from Bidens pilosa weed and their adsorptive comparison of toxic dyes.

Autor: Nguyen DTC; Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, UTM Johor, Bahru, Johor, Malaysia; Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam., Jalil AA; Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, UTM Johor, Bahru, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, 81310, UTM Johor Bahru, Johor, Malaysia. Electronic address: aishahaj@utm.my., Hassan NS; Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, UTM Johor, Bahru, Johor, Malaysia., Nguyen LM; Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A TL29, District 12, Ho Chi Minh City, 700000, Viet Nam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, 100000, Viet Nam., Nguyen DH; Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A TL29, District 12, Ho Chi Minh City, 700000, Viet Nam., Tran TV; Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, UTM Johor, Bahru, Johor, Malaysia; Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2024 Jun; Vol. 358, pp. 142087. Date of Electronic Publication: 2024 Apr 22.
DOI: 10.1016/j.chemosphere.2024.142087
Abstrakt: Bidens pilosa is classified as an invasive plant and has become a problematic weed to many agricultural crops. This species strongly germinates, grows and reproduces and competing for nutrients with local plants. To lessen the influence of Bidens pilosa, therefore, converting this harmful species into carbon materials as adsorbents in harm-to-wealth and valorization strategies is required. Here, we synthesized a series of magnetic composites based on MFe 2 O 4 (M = Ni, Co, Zn, Fe) supported on porous carbon (MFOAC) derived from Bidens pilosa by a facile hydrothermal method. The Bidens pilosa carbon was initially activated by condensed H 3 PO 4 to increase the surface chemistry. We observed that porous carbon loaded NiFe 2 O 4 (NFOAC) reached the highest surface area (795.7 m 2  g -1 ), followed by CoFe 2 O 4 /AC (449.1 m 2  g -1 ), Fe 3 O 4 /AC (426.1 m 2  g -1 ), ZnFe 2 O 4 /AC (409.5 m 2  g -1 ). Morphological results showed nanoparticles were well-dispersed on the surface of carbon. RhB, MO, and MR dyes were used as adsorbate to test the adsorption by MFOAC. Effect of time (0-360 min), concentration (5-50 mg L -1 ), dosage (0.05-0.2 g L -1 ), and pH (3-9) on dyes adsorption onto MFOAC was investigated. It was found that NFOAC obtained the highest maximum adsorption capacity against dyes, RhB (107.96 mg g -1 ) < MO (148.05 mg g -1 ) < MR (153.1 mg g -1 ). Several mechanisms such as H bonding, π-π stacking, cation-π interaction, and electrostatic interaction were suggested. With sufficient stability and capacity, NFOAC can be used as potential adsorbent for real water treatment systems.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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