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Materials Congress 2018
Page 83
Nano Research & Applications
ISSN: 2471-9838
W o r l d C o n g r e s s o n
Materials Science & Engineering
A u g u s t 2 3 - 2 5 , 2 0 1 8
Am s t e r d a m , N e t h e r l a n d s
T
he use of Fe
0
nanoparticles (Fe NPs) has presented a great interest as adsorbent material. It has been extensively used for
the decontamination of aqueous matrices. However, this material has some limitations when used in aqueous matrices and
porous media, such as soil. To resolve these problems, the use of bimetallic nanoparticles (BNPs), specifically, FeCu BNPs had
been reported, because this material has a higher reactivity, colloidal stability and removal rate compared with Fe NPs. The aim of
this work was to synthesize and characterize Fe NPs and FeCu BNPs (different mass ratio of Fe-Cu,), evaluating the incorporation
of Cu on Fe NPs in the removal of As(V) present in aqueous matrices. The synthesis of nanomaterials was performed following
the experimental procedure proposed by Wang & Zhang (1997). The change to the proposed synthesis was performed considering
the simultaneous reduction of both metals, using NaBH
4
as a reducing agent. SEM images showed the formation of characteristic
agglomerate of this magnetic material (Fe NPs). For FeCu BNPs, structure mix (pseudo spherical, amorphous and sheet) was
observed. Besides, by XRD, peaks of Fe
0
for both materials and Cu
0
and oxide in FeCu BNPs, were identified. The sorption isotherm
were carried out in batch system, working with 50 mg of nanomaterial and a solution of 200 mg/L As(V) (As2O5), 0.01 M NaCl
(background electrolyte), pH 7, and stirred time of 5 hours. The Freundlich Model, which is characteristic of oxyanions that form
multiple layers during the removal process, showed the best mathematical fit of the experimental data. FeCu BNPs showed
better removal capacity than Fe NPs. In base on this study, the incorporation of Cu on Fe NPs, improves the removal capacity and
therefore, this material can be applied as an absorbent nanomaterial for As(V) abatement.
pamela.sepulvedaor@usach.clDoes the capacity removal of As(V) improve with
the incorporation of a second metal (Cu) on Fe
nanoparticles?
Pamela Sepulveda, C Flores, M A Rubio, A Garcia Garcia and N
Arancibia-Miranda
1
Universidad de Santiago de Chile, Chile
2
Laboratorio de síntesis y modificación de nanoestructuras y materiales bidimensionales, México
Nano Res Appl 2018, Volume: 4
DOI: 10.21767/2471-9838-C4-018