Abstract
The contamination of drinking water with naturally occurring arsenic is a global health threat. Filters that are packed with adsorbent media with a high affinity for arsenic have been used to de-contaminate water - generally iron or aluminium oxides are favored materials. Recently, nanoparticles have been introduced as adsorbent media due to their superior efficiency compared to their bulk counter-parts. An efficient nanoadsorbent should ideally possess high surface area, be easy to synthesize, and most importantly offer a high arsenic removal capacity. Achieving all the key features in a single step synthesis is an engineering challenge. We have successfully engineered such a material in the form of nanochains synthesized via a one step flame synthesis. The ultra-long γ-Fe2O3 nanochains possess high surface area (151.12 m2 g-1), large saturation magnetization (77.1 emu g -1) that aids in their gas phase self-assembly into long chains in an external magnetic field, along with an extraordinary arsenic removal capacity (162 mg g-1). A filter made with this material exhibited a relatively low-pressure drop and very little break-through of the iron oxide across the filter.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 12974-12981 |
| Number of pages | 8 |
| Journal | Journal of Materials Chemistry A |
| Volume | 2 |
| Issue number | 32 |
| DOIs | |
| State | Published - Aug 28 2014 |
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ASJC Scopus subject areas
- Chemistry(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
Cite this
Ultra-long magnetic nanochains for highly efficient arsenic removal from water. / Das, Gautom Kumar; Bonifacio, Cecile S.; De Rojas, Julius; Liu, Kai; Van Benthem, Klaus; Kennedy, Ian M.
In: Journal of Materials Chemistry A, Vol. 2, No. 32, 28.08.2014, p. 12974-12981.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ultra-long magnetic nanochains for highly efficient arsenic removal from water
AU - Das, Gautom Kumar
AU - Bonifacio, Cecile S.
AU - De Rojas, Julius
AU - Liu, Kai
AU - Van Benthem, Klaus
AU - Kennedy, Ian M.
PY - 2014/8/28
Y1 - 2014/8/28
N2 - The contamination of drinking water with naturally occurring arsenic is a global health threat. Filters that are packed with adsorbent media with a high affinity for arsenic have been used to de-contaminate water - generally iron or aluminium oxides are favored materials. Recently, nanoparticles have been introduced as adsorbent media due to their superior efficiency compared to their bulk counter-parts. An efficient nanoadsorbent should ideally possess high surface area, be easy to synthesize, and most importantly offer a high arsenic removal capacity. Achieving all the key features in a single step synthesis is an engineering challenge. We have successfully engineered such a material in the form of nanochains synthesized via a one step flame synthesis. The ultra-long γ-Fe2O3 nanochains possess high surface area (151.12 m2 g-1), large saturation magnetization (77.1 emu g -1) that aids in their gas phase self-assembly into long chains in an external magnetic field, along with an extraordinary arsenic removal capacity (162 mg g-1). A filter made with this material exhibited a relatively low-pressure drop and very little break-through of the iron oxide across the filter.
AB - The contamination of drinking water with naturally occurring arsenic is a global health threat. Filters that are packed with adsorbent media with a high affinity for arsenic have been used to de-contaminate water - generally iron or aluminium oxides are favored materials. Recently, nanoparticles have been introduced as adsorbent media due to their superior efficiency compared to their bulk counter-parts. An efficient nanoadsorbent should ideally possess high surface area, be easy to synthesize, and most importantly offer a high arsenic removal capacity. Achieving all the key features in a single step synthesis is an engineering challenge. We have successfully engineered such a material in the form of nanochains synthesized via a one step flame synthesis. The ultra-long γ-Fe2O3 nanochains possess high surface area (151.12 m2 g-1), large saturation magnetization (77.1 emu g -1) that aids in their gas phase self-assembly into long chains in an external magnetic field, along with an extraordinary arsenic removal capacity (162 mg g-1). A filter made with this material exhibited a relatively low-pressure drop and very little break-through of the iron oxide across the filter.
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UR - http://www.scopus.com/inward/citedby.url?scp=84904736535&partnerID=8YFLogxK
U2 - 10.1039/c4ta02614d
DO - 10.1039/c4ta02614d
M3 - Article
AN - SCOPUS:84904736535
VL - 2
SP - 12974
EP - 12981
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 32
ER -