As(III) and As(V) adsorption by hydrous zirconium oxide nanoparticles synthesized by a hydrothermal process followed with heat treatment

Cui Hang; Qi Li; Shian Gao; Jian Ku Shang

doi:10.1021/ie202260g

As(III) and As(V) adsorption by hydrous zirconium oxide nanoparticles synthesized by a hydrothermal process followed with heat treatment

Cui Hang, Qi Li, Shian Gao, Jian Ku Shang

Materials Science and Engineering

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

Abstract

Hydrous zirconium oxide (ZrO ₂̇xH ₂O) were synthesized by a low-cost hydrothermal process followed with heat treatment. ZrO ₂·xH ₂O nanoparticles ranged from 6 nm to 10 nm and formed highly porous aggregates, resulting in a large surface area of 161.8 m ² g ^-1. The batch tests on the laboratory water samples demonstrated a very high degree of As(III) and As(V) removal by ZrO ₂̇xH ₂O nanoparticles. The adsorption mechanism study demonstrated that both arsenic species form inner-sphere surface complexes on the surface of ZrO ₂̇xH ₂O nanoparticles. Higher arsenic removal effect of these ZrO ₂̇xH ₂O nanoparticles were demonstrated, compared with commercially available Al ₂O ₃ and TiO ₂ nanoparticles. Ionic strength and competing ion effects on the arsenic adsorption of these ZrO ₂xH ₂O nanoparticles were also studied. Testing with natural lake water confirmed the effectiveness of ZrO ₂·xH ₂O nanoparticles in removing arsenic species from natural water, and the immobilization of ZrO ₂̇ xH ₂O nanoparticles on glass fiber cloth minimized the dispersion of nanoparticles into the treated body of water. The high adsorption capacity of ZrO ₂̇xH ₂O nanoparticles is shown to result from the strong inner-sphere surface complexing promoted by the high surface area, large pore volume, and surface hydroxyl groups of zirconium oxide nanoparticles.

Original language	English (US)
Pages (from-to)	353-361
Number of pages	9
Journal	Industrial and Engineering Chemistry Research
Volume	51
Issue number	1
DOIs	https://doi.org/10.1021/ie202260g
State	Published - Jan 11 2012

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Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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title = "As(III) and As(V) adsorption by hydrous zirconium oxide nanoparticles synthesized by a hydrothermal process followed with heat treatment",

abstract = "Hydrous zirconium oxide (ZrO {\.2}xH 2O) were synthesized by a low-cost hydrothermal process followed with heat treatment. ZrO 2·xH 2O nanoparticles ranged from 6 nm to 10 nm and formed highly porous aggregates, resulting in a large surface area of 161.8 m 2 g -1. The batch tests on the laboratory water samples demonstrated a very high degree of As(III) and As(V) removal by ZrO {\.2}xH 2O nanoparticles. The adsorption mechanism study demonstrated that both arsenic species form inner-sphere surface complexes on the surface of ZrO {\.2}xH 2O nanoparticles. Higher arsenic removal effect of these ZrO {\.2}xH 2O nanoparticles were demonstrated, compared with commercially available Al 2O 3 and TiO 2 nanoparticles. Ionic strength and competing ion effects on the arsenic adsorption of these ZrO 2xH 2O nanoparticles were also studied. Testing with natural lake water confirmed the effectiveness of ZrO 2·xH 2O nanoparticles in removing arsenic species from natural water, and the immobilization of ZrO {\.2} xH 2O nanoparticles on glass fiber cloth minimized the dispersion of nanoparticles into the treated body of water. The high adsorption capacity of ZrO {\.2}xH 2O nanoparticles is shown to result from the strong inner-sphere surface complexing promoted by the high surface area, large pore volume, and surface hydroxyl groups of zirconium oxide nanoparticles.",

author = "Cui Hang and Qi Li and Shian Gao and Shang, {Jian Ku}",

year = "2012",

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journal = "Industrial and Engineering Chemistry Research",

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T1 - As(III) and As(V) adsorption by hydrous zirconium oxide nanoparticles synthesized by a hydrothermal process followed with heat treatment

AU - Hang, Cui

AU - Li, Qi

AU - Gao, Shian

AU - Shang, Jian Ku

PY - 2012/1/11

Y1 - 2012/1/11

N2 - Hydrous zirconium oxide (ZrO 2̇xH 2O) were synthesized by a low-cost hydrothermal process followed with heat treatment. ZrO 2·xH 2O nanoparticles ranged from 6 nm to 10 nm and formed highly porous aggregates, resulting in a large surface area of 161.8 m 2 g -1. The batch tests on the laboratory water samples demonstrated a very high degree of As(III) and As(V) removal by ZrO 2̇xH 2O nanoparticles. The adsorption mechanism study demonstrated that both arsenic species form inner-sphere surface complexes on the surface of ZrO 2̇xH 2O nanoparticles. Higher arsenic removal effect of these ZrO 2̇xH 2O nanoparticles were demonstrated, compared with commercially available Al 2O 3 and TiO 2 nanoparticles. Ionic strength and competing ion effects on the arsenic adsorption of these ZrO 2xH 2O nanoparticles were also studied. Testing with natural lake water confirmed the effectiveness of ZrO 2·xH 2O nanoparticles in removing arsenic species from natural water, and the immobilization of ZrO 2̇ xH 2O nanoparticles on glass fiber cloth minimized the dispersion of nanoparticles into the treated body of water. The high adsorption capacity of ZrO 2̇xH 2O nanoparticles is shown to result from the strong inner-sphere surface complexing promoted by the high surface area, large pore volume, and surface hydroxyl groups of zirconium oxide nanoparticles.

AB - Hydrous zirconium oxide (ZrO 2̇xH 2O) were synthesized by a low-cost hydrothermal process followed with heat treatment. ZrO 2·xH 2O nanoparticles ranged from 6 nm to 10 nm and formed highly porous aggregates, resulting in a large surface area of 161.8 m 2 g -1. The batch tests on the laboratory water samples demonstrated a very high degree of As(III) and As(V) removal by ZrO 2̇xH 2O nanoparticles. The adsorption mechanism study demonstrated that both arsenic species form inner-sphere surface complexes on the surface of ZrO 2̇xH 2O nanoparticles. Higher arsenic removal effect of these ZrO 2̇xH 2O nanoparticles were demonstrated, compared with commercially available Al 2O 3 and TiO 2 nanoparticles. Ionic strength and competing ion effects on the arsenic adsorption of these ZrO 2xH 2O nanoparticles were also studied. Testing with natural lake water confirmed the effectiveness of ZrO 2·xH 2O nanoparticles in removing arsenic species from natural water, and the immobilization of ZrO 2̇ xH 2O nanoparticles on glass fiber cloth minimized the dispersion of nanoparticles into the treated body of water. The high adsorption capacity of ZrO 2̇xH 2O nanoparticles is shown to result from the strong inner-sphere surface complexing promoted by the high surface area, large pore volume, and surface hydroxyl groups of zirconium oxide nanoparticles.

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As(III) and As(V) adsorption by hydrous zirconium oxide nanoparticles synthesized by a hydrothermal process followed with heat treatment

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