Calcined layered double hydroxides/reduced graphene oxide composites with improved photocatalytic degradation of paracetamol and efficient oxidation-adsorption of As(III)

Jianyao Zhu; Zhiliang Zhu; Hua Zhang; Hongtao Lu; Wei Zhang; Yanling Qiu; Linyan Zhu; Stephan Küppers

doi:10.1016/j.apcatb.2017.12.003

Calcined layered double hydroxides/reduced graphene oxide composites with improved photocatalytic degradation of paracetamol and efficient oxidation-adsorption of As(III)

Jianyao Zhu, Zhiliang Zhu^*, Hua Zhang, Hongtao Lu, Wei Zhang, Yanling Qiu, Linyan Zhu, Stephan Küppers

^*Corresponding author for this work

Department of Environmental Science - Environmental chemistry & toxicology

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

Abstract

The coexistence of pharmaceuticals and arsenic in natural water may exhibit a synergistic toxic effect on humans or animals. Therefore, efficient simultaneous removal of pharmaceuticals (paracetamol as a target pollutant) and arsenic from water has received increasing attention. In this study, the novel calcined ZnFe-layered double hydroxides/reduced graphene oxide (ZnFe-CLDH/RGO) composites are fabricated via a hydrothermal-calcination method. The obtained ZnFe-CLDH/RGO composites exhibit significantly improved photocatalytic performance toward degradation of paracetamol as compared to the pristine ZnFe-CLDH. The photocatalytic activity of the screened ZnFe-CLDH/RGO30 material for paracetamol degradation is about 3.5 times that of ZnFe-CLDH. The improved photocatalytic activity could be attributed to the RGO, which could lead to increased pollutant adsorption capacity and enhanced charge separation efficiency. The magnetic ZnFe-CLDH/RGO composite also shows excellent stability and reusability as a promising photocatalyst. For As(III) removal, the ZnFe-CLDH/RGO composite displays better removal efficiency in the light than in the dark. It should be ascribed to the synergy of photocatalytic oxidation of As(III) to less toxic As(V) and the accompanying arsenic adsorption. Interestingly, our study indicates that the paracetamol degradation in the mixed system of paracetamol/As(III) is more efficient than that in the single system of paracetamol. Meanwhile, arsenic can be also efficiently removed from the water samples with coexistent paracetamol and As(III) species. This work may provide a promising composite for the efficient simultaneous elimination of water environmental inorganic anions and organic pollutants.

Original language	English
Journal	Applied Catalysis B: Environmental
Volume	225
Pages (from-to)	550-562
Number of pages	13
ISSN	0926-3373
DOIs	https://doi.org/10.1016/j.apcatb.2017.12.003
Publication status	Published - 5 Jun 2018

Keywords

Calcined layered double hydroxides
Oxidation-adsorption
Photocatalysis
Reduced graphene oxide

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10.1016/j.apcatb.2017.12.003

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@article{26c1db9104294de78cb17f99c5e63e89,

title = "Calcined layered double hydroxides/reduced graphene oxide composites with improved photocatalytic degradation of paracetamol and efficient oxidation-adsorption of As(III)",

abstract = "The coexistence of pharmaceuticals and arsenic in natural water may exhibit a synergistic toxic effect on humans or animals. Therefore, efficient simultaneous removal of pharmaceuticals (paracetamol as a target pollutant) and arsenic from water has received increasing attention. In this study, the novel calcined ZnFe-layered double hydroxides/reduced graphene oxide (ZnFe-CLDH/RGO) composites are fabricated via a hydrothermal-calcination method. The obtained ZnFe-CLDH/RGO composites exhibit significantly improved photocatalytic performance toward degradation of paracetamol as compared to the pristine ZnFe-CLDH. The photocatalytic activity of the screened ZnFe-CLDH/RGO30 material for paracetamol degradation is about 3.5 times that of ZnFe-CLDH. The improved photocatalytic activity could be attributed to the RGO, which could lead to increased pollutant adsorption capacity and enhanced charge separation efficiency. The magnetic ZnFe-CLDH/RGO composite also shows excellent stability and reusability as a promising photocatalyst. For As(III) removal, the ZnFe-CLDH/RGO composite displays better removal efficiency in the light than in the dark. It should be ascribed to the synergy of photocatalytic oxidation of As(III) to less toxic As(V) and the accompanying arsenic adsorption. Interestingly, our study indicates that the paracetamol degradation in the mixed system of paracetamol/As(III) is more efficient than that in the single system of paracetamol. Meanwhile, arsenic can be also efficiently removed from the water samples with coexistent paracetamol and As(III) species. This work may provide a promising composite for the efficient simultaneous elimination of water environmental inorganic anions and organic pollutants.",

keywords = "Calcined layered double hydroxides, Oxidation-adsorption, Photocatalysis, Reduced graphene oxide",

author = "Jianyao Zhu and Zhiliang Zhu and Hua Zhang and Hongtao Lu and Wei Zhang and Yanling Qiu and Linyan Zhu and Stephan K{\"u}ppers",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2018",

month = jun,

day = "5",

doi = "10.1016/j.apcatb.2017.12.003",

language = "English",

volume = "225",

pages = "550--562",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

publisher = "Elsevier BV",

}

Calcined layered double hydroxides/reduced graphene oxide composites with improved photocatalytic degradation of paracetamol and efficient oxidation-adsorption of As(III). / Zhu, Jianyao; Zhu, Zhiliang; Zhang, Hua et al.
In: Applied Catalysis B: Environmental, Vol. 225, 05.06.2018, p. 550-562.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Calcined layered double hydroxides/reduced graphene oxide composites with improved photocatalytic degradation of paracetamol and efficient oxidation-adsorption of As(III)

AU - Zhu, Jianyao

AU - Zhu, Zhiliang

AU - Zhang, Hua

AU - Lu, Hongtao

AU - Zhang, Wei

AU - Qiu, Yanling

AU - Zhu, Linyan

AU - Küppers, Stephan

PY - 2018/6/5

Y1 - 2018/6/5

N2 - The coexistence of pharmaceuticals and arsenic in natural water may exhibit a synergistic toxic effect on humans or animals. Therefore, efficient simultaneous removal of pharmaceuticals (paracetamol as a target pollutant) and arsenic from water has received increasing attention. In this study, the novel calcined ZnFe-layered double hydroxides/reduced graphene oxide (ZnFe-CLDH/RGO) composites are fabricated via a hydrothermal-calcination method. The obtained ZnFe-CLDH/RGO composites exhibit significantly improved photocatalytic performance toward degradation of paracetamol as compared to the pristine ZnFe-CLDH. The photocatalytic activity of the screened ZnFe-CLDH/RGO30 material for paracetamol degradation is about 3.5 times that of ZnFe-CLDH. The improved photocatalytic activity could be attributed to the RGO, which could lead to increased pollutant adsorption capacity and enhanced charge separation efficiency. The magnetic ZnFe-CLDH/RGO composite also shows excellent stability and reusability as a promising photocatalyst. For As(III) removal, the ZnFe-CLDH/RGO composite displays better removal efficiency in the light than in the dark. It should be ascribed to the synergy of photocatalytic oxidation of As(III) to less toxic As(V) and the accompanying arsenic adsorption. Interestingly, our study indicates that the paracetamol degradation in the mixed system of paracetamol/As(III) is more efficient than that in the single system of paracetamol. Meanwhile, arsenic can be also efficiently removed from the water samples with coexistent paracetamol and As(III) species. This work may provide a promising composite for the efficient simultaneous elimination of water environmental inorganic anions and organic pollutants.

AB - The coexistence of pharmaceuticals and arsenic in natural water may exhibit a synergistic toxic effect on humans or animals. Therefore, efficient simultaneous removal of pharmaceuticals (paracetamol as a target pollutant) and arsenic from water has received increasing attention. In this study, the novel calcined ZnFe-layered double hydroxides/reduced graphene oxide (ZnFe-CLDH/RGO) composites are fabricated via a hydrothermal-calcination method. The obtained ZnFe-CLDH/RGO composites exhibit significantly improved photocatalytic performance toward degradation of paracetamol as compared to the pristine ZnFe-CLDH. The photocatalytic activity of the screened ZnFe-CLDH/RGO30 material for paracetamol degradation is about 3.5 times that of ZnFe-CLDH. The improved photocatalytic activity could be attributed to the RGO, which could lead to increased pollutant adsorption capacity and enhanced charge separation efficiency. The magnetic ZnFe-CLDH/RGO composite also shows excellent stability and reusability as a promising photocatalyst. For As(III) removal, the ZnFe-CLDH/RGO composite displays better removal efficiency in the light than in the dark. It should be ascribed to the synergy of photocatalytic oxidation of As(III) to less toxic As(V) and the accompanying arsenic adsorption. Interestingly, our study indicates that the paracetamol degradation in the mixed system of paracetamol/As(III) is more efficient than that in the single system of paracetamol. Meanwhile, arsenic can be also efficiently removed from the water samples with coexistent paracetamol and As(III) species. This work may provide a promising composite for the efficient simultaneous elimination of water environmental inorganic anions and organic pollutants.

KW - Calcined layered double hydroxides

KW - Oxidation-adsorption

KW - Photocatalysis

KW - Reduced graphene oxide

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U2 - 10.1016/j.apcatb.2017.12.003

DO - 10.1016/j.apcatb.2017.12.003

M3 - Journal article

AN - SCOPUS:85039742243

SN - 0926-3373

VL - 225

SP - 550

EP - 562

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

ER -

Calcined layered double hydroxides/reduced graphene oxide composites with improved photocatalytic degradation of paracetamol and efficient oxidation-adsorption of As(III)

Abstract

Keywords

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