Adsorptive removal of dichlorophenoxyacetic acid (2,4-D) using novel nanoparticles based on cationic surfactant-coated titania nanoparticles

A novel nanomaterial based on cationic surfactant-coated TiO 2 nanoparticle (CCTN) was systematically fabricated in this work. Synthesized titania nanoparticles were thoroughly characterized by XRD, FT-IR, HR-TEM, TEM–EDX, SEM with EDX mapping, BET, and ζ potential measurements. The adsorption of ca...

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Veröffentlicht in:Environmental science and pollution research international 2023-03, Vol.30 (14), p.42367-42377
Hauptverfasser: Le, Thi Dung, Nguyen, Duc Thang, Nguyen, Quynh Loan, Duong, Viet Dung, Doan, Thi Hai Yen, Nadda, Ashok Kumar, Sharma, Swati, Le, Thanh Son, Pham, Tien Duc
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container_issue 14
container_start_page 42367
container_title Environmental science and pollution research international
container_volume 30
creator Le, Thi Dung
Nguyen, Duc Thang
Nguyen, Quynh Loan
Duong, Viet Dung
Doan, Thi Hai Yen
Nadda, Ashok Kumar
Sharma, Swati
Le, Thanh Son
Pham, Tien Duc
description A novel nanomaterial based on cationic surfactant-coated TiO 2 nanoparticle (CCTN) was systematically fabricated in this work. Synthesized titania nanoparticles were thoroughly characterized by XRD, FT-IR, HR-TEM, TEM–EDX, SEM with EDX mapping, BET, and ζ potential measurements. The adsorption of cationic surfactant, cetyltrimethylammonium bromide (CTAB), on TiO 2 was studied under various pH and ionic strength conditions. Adsorption of CTAB on TiO 2 increased with ionic strength increment in the presence of hemimicelle monolayer structure, indicating that nonelectrostatic and electrostatic forces control CTAB uptake. CTAB adsorption isotherms on TiO 2 were according to a two-step model. Potential application in pesticide removal of 2,4-dichorophenoxy acetic acid (2,4-D) using CCTN was also studied. Optimum parameters for 2,4-D treatment through adsorption technique were pH 5, adsorption time of 120 min, and CCTN dosage of 10 mg·mL –1 . Very low 2,4-D removal efficiency using TiO 2 without CTAB coating was found to be approximately 28.5% whereas the removal efficiency was up to about 90% by using CCTN under optimum conditions, and the maximum adsorption capacity of 12.79 mg·g –1 was found. Adsorption isotherms of 2,4-D on CCTN were more suitable with the Langmuir model than Freundlich. Adsorption mechanisms of 2,4-D on CCTN were mainly governed by Columbic attraction based on isotherms and surface charge changes.
doi_str_mv 10.1007/s11356-023-25312-1
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Very low 2,4-D removal efficiency using TiO 2 without CTAB coating was found to be approximately 28.5% whereas the removal efficiency was up to about 90% by using CCTN under optimum conditions, and the maximum adsorption capacity of 12.79 mg·g –1 was found. Adsorption isotherms of 2,4-D on CCTN were more suitable with the Langmuir model than Freundlich. 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Synthesized titania nanoparticles were thoroughly characterized by XRD, FT-IR, HR-TEM, TEM–EDX, SEM with EDX mapping, BET, and ζ potential measurements. The adsorption of cationic surfactant, cetyltrimethylammonium bromide (CTAB), on TiO 2 was studied under various pH and ionic strength conditions. Adsorption of CTAB on TiO 2 increased with ionic strength increment in the presence of hemimicelle monolayer structure, indicating that nonelectrostatic and electrostatic forces control CTAB uptake. CTAB adsorption isotherms on TiO 2 were according to a two-step model. Potential application in pesticide removal of 2,4-dichorophenoxy acetic acid (2,4-D) using CCTN was also studied. Optimum parameters for 2,4-D treatment through adsorption technique were pH 5, adsorption time of 120 min, and CCTN dosage of 10 mg·mL –1 . 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subjects 2,4-D
2,4-Dichlorophenoxyacetic Acid
Acetic acid
Adsorption
Adsorptivity
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
cationic surfactants
Cations
Cetrimonium
Cetyltrimethylammonium bromide
Coatings
Dichlorophenoxyacetic acid
Earth and Environmental Science
Ecotoxicology
Electrostatic properties
Environment
Environmental Chemistry
Environmental Health
Environmental science
Herbicides
Ionic strength
Ions
Isotherms
Kinetics
Nanomaterials
Nanoparticles
Nanoparticles - chemistry
Pesticides
Phenoxyacetates
Pollutant removal
Research Article
sorption isotherms
Spectroscopy, Fourier Transform Infrared
Surface charge
Surface-Active Agents - chemistry
Surfactants
Titanium dioxide
Waste Water Technology
Water Management
Water Pollution Control
title Adsorptive removal of dichlorophenoxyacetic acid (2,4-D) using novel nanoparticles based on cationic surfactant-coated titania nanoparticles
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