Magnetic mesoporous materials for removal of environmental wastes

Byoung Chan Kim; Jinwoo Lee; Wooyong Um; Jaeyun Kim; Jin Joo; Jin Hyung Lee; Ja Hun Kwak; Jae Hyun Kim; Changha Lee; Hongshin Lee; R. Shane Addleman; Taeghwan Hyeon; Man Bock Gu; Jungbae Kim

doi:10.1016/j.jhazmat.2011.06.022

Magnetic mesoporous materials for removal of environmental wastes

Byoung Chan Kim, Jinwoo Lee, Wooyong Um, Jaeyun Kim, Jin Joo, Jin Hyung Lee, Ja Hun Kwak, Jae Hyun Kim, Changha Lee, Hongshin Lee, R. Shane Addleman, Taeghwan Hyeon, Man Bock Gu, Jungbae Kim

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

83 Citations (Scopus)

Abstract

We have synthesized two different magnetic mesoporous materials that can be easily separated from aqueous solutions by applying a magnetic field. Synthesized magnetic mesoporous materials, Mag-SBA-15 (magnetic ordered mesoporous silica) and Mag-OMC (magnetic ordered mesoporous carbon), have a high loading capacity of contaminants due to high surface area of the supports and high magnetic activity due to the embedded iron oxide particles. Application of surface-modified Mag-SBA-15 was investigated for the collection of mercury from water. The mercury adsorption using Mag-SBA-15 was rapid during the initial contact time and reached a steady-state condition, with an uptake of approximately 97% after 7. h. Application of Mag-OMC for collection of organics from water, using fluorescein as an easily trackable model analyte, was explored. The fluorescein was absorbed into Mag-OMC within minutes and the fluorescent intensity of solution was completely disappeared after an hour. In another application, Mag-SBA-15 was used as a host of tyrosinase, and employed as recyclable catalytic scaffolds for tyrosinase-catalyzed biodegradation of catechol. Crosslinked tyrosinase in Mag-SBA-15, prepared in a two step process of tyrosinase adsorption and crosslinking, was stable enough for catechol degradation with no serious loss of enzyme activity. Considering these results of cleaning up water from toxic inorganic and organic contaminants, magnetic mesoporous materials have a great potential to be employed for the removal of environmental contaminants and potentially for the application in large-scale wastewater treatment plants.

Original language	English
Pages (from-to)	1140-1147
Number of pages	8
Journal	Journal of hazardous materials
Volume	192
Issue number	3
DOIs	https://doi.org/10.1016/j.jhazmat.2011.06.022
Publication status	Published - 2011 Sept 15

Bibliographical note

Funding Information:
Portions of this work were supported by grants from the National Research Foundation (NRF) funded by the Korean Ministry of Education, Science & Technology (MEST) ( 2009-0082314, 2009-0084771 , and K20902001448-10E0100-03010), the Seoul R&BD Program (10920), and by grant from the Korea Institute of Science & Technology ( 2E22181 ). This work was also supported by the Pacific Northwest National Laboratory Directed Research Program. The research was performed in part at the W. R. Wiley Environmental Molecular Sciences Laboratory, a national scientific-user facility sponsored by the U.S. Department of Energy's Office of Biological and Environmental Research and located at the Pacific Northwest National Laboratory.

Keywords

Adsorption
Catehcol degradation
Magnetic mesoporous materials
Mercury
Tyrosinase

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Waste Management and Disposal
Pollution
Health, Toxicology and Mutagenesis

Access to Document

10.1016/j.jhazmat.2011.06.022

Cite this

@article{ea044b28bd1b48bba63143533fe9c846,

title = "Magnetic mesoporous materials for removal of environmental wastes",

abstract = "We have synthesized two different magnetic mesoporous materials that can be easily separated from aqueous solutions by applying a magnetic field. Synthesized magnetic mesoporous materials, Mag-SBA-15 (magnetic ordered mesoporous silica) and Mag-OMC (magnetic ordered mesoporous carbon), have a high loading capacity of contaminants due to high surface area of the supports and high magnetic activity due to the embedded iron oxide particles. Application of surface-modified Mag-SBA-15 was investigated for the collection of mercury from water. The mercury adsorption using Mag-SBA-15 was rapid during the initial contact time and reached a steady-state condition, with an uptake of approximately 97% after 7. h. Application of Mag-OMC for collection of organics from water, using fluorescein as an easily trackable model analyte, was explored. The fluorescein was absorbed into Mag-OMC within minutes and the fluorescent intensity of solution was completely disappeared after an hour. In another application, Mag-SBA-15 was used as a host of tyrosinase, and employed as recyclable catalytic scaffolds for tyrosinase-catalyzed biodegradation of catechol. Crosslinked tyrosinase in Mag-SBA-15, prepared in a two step process of tyrosinase adsorption and crosslinking, was stable enough for catechol degradation with no serious loss of enzyme activity. Considering these results of cleaning up water from toxic inorganic and organic contaminants, magnetic mesoporous materials have a great potential to be employed for the removal of environmental contaminants and potentially for the application in large-scale wastewater treatment plants.",

keywords = "Adsorption, Catehcol degradation, Magnetic mesoporous materials, Mercury, Tyrosinase",

author = "Kim, {Byoung Chan} and Jinwoo Lee and Wooyong Um and Jaeyun Kim and Jin Joo and Lee, {Jin Hyung} and Kwak, {Ja Hun} and Kim, {Jae Hyun} and Changha Lee and Hongshin Lee and Addleman, {R. Shane} and Taeghwan Hyeon and Gu, {Man Bock} and Jungbae Kim",

note = "Funding Information: Portions of this work were supported by grants from the National Research Foundation (NRF) funded by the Korean Ministry of Education, Science & Technology (MEST) ( 2009-0082314, 2009-0084771 , and K20902001448-10E0100-03010), the Seoul R&BD Program (10920), and by grant from the Korea Institute of Science & Technology ( 2E22181 ). This work was also supported by the Pacific Northwest National Laboratory Directed Research Program. The research was performed in part at the W. R. Wiley Environmental Molecular Sciences Laboratory, a national scientific-user facility sponsored by the U.S. Department of Energy's Office of Biological and Environmental Research and located at the Pacific Northwest National Laboratory. ",

year = "2011",

month = sep,

day = "15",

doi = "10.1016/j.jhazmat.2011.06.022",

language = "English",

volume = "192",

pages = "1140--1147",

journal = "Journal of hazardous materials",

issn = "0304-3894",

publisher = "Elsevier",

number = "3",

}

TY - JOUR

T1 - Magnetic mesoporous materials for removal of environmental wastes

AU - Kim, Byoung Chan

AU - Lee, Jinwoo

AU - Um, Wooyong

AU - Kim, Jaeyun

AU - Joo, Jin

AU - Lee, Jin Hyung

AU - Kwak, Ja Hun

AU - Kim, Jae Hyun

AU - Lee, Changha

AU - Lee, Hongshin

AU - Addleman, R. Shane

AU - Hyeon, Taeghwan

AU - Gu, Man Bock

AU - Kim, Jungbae

N1 - Funding Information: Portions of this work were supported by grants from the National Research Foundation (NRF) funded by the Korean Ministry of Education, Science & Technology (MEST) ( 2009-0082314, 2009-0084771 , and K20902001448-10E0100-03010), the Seoul R&BD Program (10920), and by grant from the Korea Institute of Science & Technology ( 2E22181 ). This work was also supported by the Pacific Northwest National Laboratory Directed Research Program. The research was performed in part at the W. R. Wiley Environmental Molecular Sciences Laboratory, a national scientific-user facility sponsored by the U.S. Department of Energy's Office of Biological and Environmental Research and located at the Pacific Northwest National Laboratory.

PY - 2011/9/15

Y1 - 2011/9/15

N2 - We have synthesized two different magnetic mesoporous materials that can be easily separated from aqueous solutions by applying a magnetic field. Synthesized magnetic mesoporous materials, Mag-SBA-15 (magnetic ordered mesoporous silica) and Mag-OMC (magnetic ordered mesoporous carbon), have a high loading capacity of contaminants due to high surface area of the supports and high magnetic activity due to the embedded iron oxide particles. Application of surface-modified Mag-SBA-15 was investigated for the collection of mercury from water. The mercury adsorption using Mag-SBA-15 was rapid during the initial contact time and reached a steady-state condition, with an uptake of approximately 97% after 7. h. Application of Mag-OMC for collection of organics from water, using fluorescein as an easily trackable model analyte, was explored. The fluorescein was absorbed into Mag-OMC within minutes and the fluorescent intensity of solution was completely disappeared after an hour. In another application, Mag-SBA-15 was used as a host of tyrosinase, and employed as recyclable catalytic scaffolds for tyrosinase-catalyzed biodegradation of catechol. Crosslinked tyrosinase in Mag-SBA-15, prepared in a two step process of tyrosinase adsorption and crosslinking, was stable enough for catechol degradation with no serious loss of enzyme activity. Considering these results of cleaning up water from toxic inorganic and organic contaminants, magnetic mesoporous materials have a great potential to be employed for the removal of environmental contaminants and potentially for the application in large-scale wastewater treatment plants.

AB - We have synthesized two different magnetic mesoporous materials that can be easily separated from aqueous solutions by applying a magnetic field. Synthesized magnetic mesoporous materials, Mag-SBA-15 (magnetic ordered mesoporous silica) and Mag-OMC (magnetic ordered mesoporous carbon), have a high loading capacity of contaminants due to high surface area of the supports and high magnetic activity due to the embedded iron oxide particles. Application of surface-modified Mag-SBA-15 was investigated for the collection of mercury from water. The mercury adsorption using Mag-SBA-15 was rapid during the initial contact time and reached a steady-state condition, with an uptake of approximately 97% after 7. h. Application of Mag-OMC for collection of organics from water, using fluorescein as an easily trackable model analyte, was explored. The fluorescein was absorbed into Mag-OMC within minutes and the fluorescent intensity of solution was completely disappeared after an hour. In another application, Mag-SBA-15 was used as a host of tyrosinase, and employed as recyclable catalytic scaffolds for tyrosinase-catalyzed biodegradation of catechol. Crosslinked tyrosinase in Mag-SBA-15, prepared in a two step process of tyrosinase adsorption and crosslinking, was stable enough for catechol degradation with no serious loss of enzyme activity. Considering these results of cleaning up water from toxic inorganic and organic contaminants, magnetic mesoporous materials have a great potential to be employed for the removal of environmental contaminants and potentially for the application in large-scale wastewater treatment plants.

KW - Adsorption

KW - Catehcol degradation

KW - Magnetic mesoporous materials

KW - Mercury

KW - Tyrosinase

UR - http://www.scopus.com/inward/record.url?scp=80052025963&partnerID=8YFLogxK

U2 - 10.1016/j.jhazmat.2011.06.022

DO - 10.1016/j.jhazmat.2011.06.022

M3 - Article

C2 - 21752538

AN - SCOPUS:80052025963

SN - 0304-3894

VL - 192

SP - 1140

EP - 1147

JO - Journal of hazardous materials

JF - Journal of hazardous materials

IS - 3

ER -

Magnetic mesoporous materials for removal of environmental wastes

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this