The influence of carbonization temperature on the modification of TiO2 in the removal of methyl orange from aqueous solution by adsorption

Shila Jafari; Bahareh Yahyaei; Ewelina Kusiak-Nejman; Mika Sillanpää

doi:10.1080/19443994.2015.1094678

The influence of carbonization temperature on the modification of TiO₂ in the removal of methyl orange from aqueous solution by adsorption

Shila Jafari, Bahareh Yahyaei, Ewelina Kusiak-Nejman, Mika Sillanpää

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

This work investigated the adsorption ability of unmodified and carbon-modified TiO₂ nanoparticles for the removal of methyl orange (MO) from aqueous solution. Carbon–TiO₂ was obtained by carbonization of ethanol vapors at three different temperatures (200, 300, and 400°C), and their adsorption was compared with unmodified TiO₂ nanoparticles. The Freundlich adsorption model was found to fit for TiO₂ and C–TiO₂-200, while carbon modification of TiO₂ at a high temperature fitted the Langmuir–Freundlich model (C–TiO₂-300 and C–TiO₂-400). Generally, the carbonization of C–TiO₂ increased the adsorption capacity of TiO₂ nanoparticles, however the BET surface of modified and pristine TiO₂ was almost the same. The zeta potential of modified TiO₂ is higher than unmodified TiO₂, which leads to efficient adsorption of MO onto modified TiO₂.

Original language	English
Pages (from-to)	18825-18835
Number of pages	11
Journal	Desalination and Water Treatment
Volume	57
Issue number	40
DOIs	https://doi.org/10.1080/19443994.2015.1094678
Publication status	Published - 26 Aug 2016
Externally published	Yes

Keywords

Adsorption
Carbon modification
Dye
Methyl orange
TiO
Zeta potential

ASJC Scopus subject areas

Water Science and Technology
Ocean Engineering
Pollution

Access to Document

10.1080/19443994.2015.1094678

Cite this

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title = "The influence of carbonization temperature on the modification of TiO2 in the removal of methyl orange from aqueous solution by adsorption",

abstract = "This work investigated the adsorption ability of unmodified and carbon-modified TiO2 nanoparticles for the removal of methyl orange (MO) from aqueous solution. Carbon–TiO2 was obtained by carbonization of ethanol vapors at three different temperatures (200, 300, and 400°C), and their adsorption was compared with unmodified TiO2 nanoparticles. The Freundlich adsorption model was found to fit for TiO2 and C–TiO2-200, while carbon modification of TiO2 at a high temperature fitted the Langmuir–Freundlich model (C–TiO2-300 and C–TiO2-400). Generally, the carbonization of C–TiO2 increased the adsorption capacity of TiO2 nanoparticles, however the BET surface of modified and pristine TiO2 was almost the same. The zeta potential of modified TiO2 is higher than unmodified TiO2, which leads to efficient adsorption of MO onto modified TiO2.",

keywords = "Adsorption, Carbon modification, Dye, Methyl orange, TiO, Zeta potential",

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T1 - The influence of carbonization temperature on the modification of TiO2 in the removal of methyl orange from aqueous solution by adsorption

AU - Jafari, Shila

AU - Yahyaei, Bahareh

AU - Kusiak-Nejman, Ewelina

AU - Sillanpää, Mika

PY - 2016/8/26

Y1 - 2016/8/26

N2 - This work investigated the adsorption ability of unmodified and carbon-modified TiO2 nanoparticles for the removal of methyl orange (MO) from aqueous solution. Carbon–TiO2 was obtained by carbonization of ethanol vapors at three different temperatures (200, 300, and 400°C), and their adsorption was compared with unmodified TiO2 nanoparticles. The Freundlich adsorption model was found to fit for TiO2 and C–TiO2-200, while carbon modification of TiO2 at a high temperature fitted the Langmuir–Freundlich model (C–TiO2-300 and C–TiO2-400). Generally, the carbonization of C–TiO2 increased the adsorption capacity of TiO2 nanoparticles, however the BET surface of modified and pristine TiO2 was almost the same. The zeta potential of modified TiO2 is higher than unmodified TiO2, which leads to efficient adsorption of MO onto modified TiO2.

AB - This work investigated the adsorption ability of unmodified and carbon-modified TiO2 nanoparticles for the removal of methyl orange (MO) from aqueous solution. Carbon–TiO2 was obtained by carbonization of ethanol vapors at three different temperatures (200, 300, and 400°C), and their adsorption was compared with unmodified TiO2 nanoparticles. The Freundlich adsorption model was found to fit for TiO2 and C–TiO2-200, while carbon modification of TiO2 at a high temperature fitted the Langmuir–Freundlich model (C–TiO2-300 and C–TiO2-400). Generally, the carbonization of C–TiO2 increased the adsorption capacity of TiO2 nanoparticles, however the BET surface of modified and pristine TiO2 was almost the same. The zeta potential of modified TiO2 is higher than unmodified TiO2, which leads to efficient adsorption of MO onto modified TiO2.

KW - Adsorption

KW - Carbon modification

KW - Dye

KW - Methyl orange

KW - TiO

KW - Zeta potential

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