Reactivity of Pd/Fe bimetallic nanotubes in dechlorination of coplanar polychlorinated biphenyls

Elsayed M. Zahran; Dibakar Bhattacharyya; Leonidas G. Bachas

doi:10.1016/j.chemosphere.2012.12.037

Reactivity of Pd/Fe bimetallic nanotubes in dechlorination of coplanar polychlorinated biphenyls

Elsayed M. Zahran
, Dibakar Bhattacharyya
, Leonidas G. Bachas

Producción científica: Article › revisión exhaustiva

41 Citas (Scopus)

Resumen

A new class of bimetallic materials based on palladium-decorated iron nanotubes is described that demonstrates high reactivity in dechlorination reactions. This high dechlorination efficiency was attributed to the high surface area to volume ratio of the hollow nanotubes structure. Herein, we evaluated the effect of different conditions, such as the nanotube size, and the palladium loading on the efficiency of the dechlorination of PCB 77, a model coplanar polychlorinated biphenyl (PCB), by the Pd/Fe bimetallic nanotubes system. The efficiency of the dechlorination was lowered by decreasing the tube diameter from 200 to 100. nm. In addition, the interior surface as well as the exterior surface of the as-synthesized Pd/Fe bimetallic nanotubes was found to contribute to the high efficiency of the dechlorination of PCB 77. The dechlorination of PCB 77 by Pd/Fe bimetallic nanotubes demonstrated small activation energy indicating diffusion controlled reaction. The as-prepared Pd/Fe bimetallic nanotubes showed extended lifetime activity when used in multiple dechlorination cycles.

Idioma original	English
Páginas (desde-hasta)	165-171
Número de páginas	7
Publicación	Chemosphere
Volumen	91
N.º	2
DOI	https://doi.org/10.1016/j.chemosphere.2012.12.037
Estado	Published - abr 2013

Nota bibliográfica

Funding Information:
The authors acknowledge support from the NIEHS-SRP program (P42ES007380). Partial funding from the University of Miami is also acknowledged. E.M.Z acknowledges the National Research Center, Egypt for granting an academic leave.

Financiación

The authors acknowledge support from the NIEHS-SRP program (P42ES007380). Partial funding from the University of Miami is also acknowledged. E.M.Z acknowledges the National Research Center, Egypt for granting an academic leave.

Financiadores	Número del financiador
NIEHS-SRP
National Institute of Environmental Health Sciences (NIEHS)	P42ES007380
Miami University

ODS de las Naciones Unidas

Este resultado contribuye a los siguientes Objetivos de Desarrollo Sostenible

Good health and well being

ASJC Scopus subject areas

General Chemistry
Public Health, Environmental and Occupational Health
Pollution
Health, Toxicology and Mutagenesis
Environmental Engineering
Environmental Chemistry

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10.1016/j.chemosphere.2012.12.037

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title = "Reactivity of Pd/Fe bimetallic nanotubes in dechlorination of coplanar polychlorinated biphenyls",

abstract = "A new class of bimetallic materials based on palladium-decorated iron nanotubes is described that demonstrates high reactivity in dechlorination reactions. This high dechlorination efficiency was attributed to the high surface area to volume ratio of the hollow nanotubes structure. Herein, we evaluated the effect of different conditions, such as the nanotube size, and the palladium loading on the efficiency of the dechlorination of PCB 77, a model coplanar polychlorinated biphenyl (PCB), by the Pd/Fe bimetallic nanotubes system. The efficiency of the dechlorination was lowered by decreasing the tube diameter from 200 to 100. nm. In addition, the interior surface as well as the exterior surface of the as-synthesized Pd/Fe bimetallic nanotubes was found to contribute to the high efficiency of the dechlorination of PCB 77. The dechlorination of PCB 77 by Pd/Fe bimetallic nanotubes demonstrated small activation energy indicating diffusion controlled reaction. The as-prepared Pd/Fe bimetallic nanotubes showed extended lifetime activity when used in multiple dechlorination cycles.",

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author = "Zahran, \{Elsayed M.\} and Dibakar Bhattacharyya and Bachas, \{Leonidas G.\}",

note = "Funding Information: The authors acknowledge support from the NIEHS-SRP program (P42ES007380). Partial funding from the University of Miami is also acknowledged. E.M.Z acknowledges the National Research Center, Egypt for granting an academic leave. ",

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AU - Bachas, Leonidas G.

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N2 - A new class of bimetallic materials based on palladium-decorated iron nanotubes is described that demonstrates high reactivity in dechlorination reactions. This high dechlorination efficiency was attributed to the high surface area to volume ratio of the hollow nanotubes structure. Herein, we evaluated the effect of different conditions, such as the nanotube size, and the palladium loading on the efficiency of the dechlorination of PCB 77, a model coplanar polychlorinated biphenyl (PCB), by the Pd/Fe bimetallic nanotubes system. The efficiency of the dechlorination was lowered by decreasing the tube diameter from 200 to 100. nm. In addition, the interior surface as well as the exterior surface of the as-synthesized Pd/Fe bimetallic nanotubes was found to contribute to the high efficiency of the dechlorination of PCB 77. The dechlorination of PCB 77 by Pd/Fe bimetallic nanotubes demonstrated small activation energy indicating diffusion controlled reaction. The as-prepared Pd/Fe bimetallic nanotubes showed extended lifetime activity when used in multiple dechlorination cycles.

AB - A new class of bimetallic materials based on palladium-decorated iron nanotubes is described that demonstrates high reactivity in dechlorination reactions. This high dechlorination efficiency was attributed to the high surface area to volume ratio of the hollow nanotubes structure. Herein, we evaluated the effect of different conditions, such as the nanotube size, and the palladium loading on the efficiency of the dechlorination of PCB 77, a model coplanar polychlorinated biphenyl (PCB), by the Pd/Fe bimetallic nanotubes system. The efficiency of the dechlorination was lowered by decreasing the tube diameter from 200 to 100. nm. In addition, the interior surface as well as the exterior surface of the as-synthesized Pd/Fe bimetallic nanotubes was found to contribute to the high efficiency of the dechlorination of PCB 77. The dechlorination of PCB 77 by Pd/Fe bimetallic nanotubes demonstrated small activation energy indicating diffusion controlled reaction. The as-prepared Pd/Fe bimetallic nanotubes showed extended lifetime activity when used in multiple dechlorination cycles.

KW - Bimetallic nanotubes

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KW - Palladium/iron

KW - Polychlorinated biphenyls

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Reactivity of Pd/Fe bimetallic nanotubes in dechlorination of coplanar polychlorinated biphenyls

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Financiación

ODS de las Naciones Unidas

ASJC Scopus subject areas

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