Silica encapsulation of sonochemically synthesized iron oxide nanoparticles

Md Nazrul Islam; Mohamed Abbas; Brajalal Sinha; Jong Ryul Joeng; Cheol Gi Kim

doi:10.1007/s13391-013-6019-1

Silica encapsulation of sonochemically synthesized iron oxide nanoparticles

Md Nazrul Islam, Mohamed Abbas, Brajalal Sinha, Jong Ryul Joeng, Cheol Gi Kim

Department of Physics and Chemistry

Chungnam National University

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

16 Scopus citations

Abstract

A facile sono-chemical approach was applied for the large scale synthesis of silica coated iron oxide magnetic nanoparticles (NPs) using inexpensive and non-toxic chemicals. The as-prepared silica coated magnetic iron oxide (Fe₃O₄@SiO₂ core-shell) NPs have been characterized by XRD, TEM, EDS, and VSM. X-ray diffraction (XRD) and EDS analysis revealed that Fe₃O₄ NPs have been successfully coated by this simple method. Transmission electron microscopy (TEM) data demonstrated that the thickness of silica coating on iron oxide magnetic NPs is 10 - 15 nm on average. The magnetization curve from the vibrating sample magnetometer (VSM) measurement shows that the magnetization also decreased the as-synthesized silica coated iron oxide NPs compared to the freshly prepared bare iron oxide magnetic NPs, which is also evidence of the synthesis of Fe₃O₄@SiO₂ core-shell NPs.

Original language	English
Pages (from-to)	817-820
Number of pages	4
Journal	Electronic Materials Letters
Volume	9
Issue number	6
DOIs	https://doi.org/10.1007/s13391-013-6019-1
State	Published - Nov 2013

Keywords

core-shell NPs
magnetic NPs
silica coating
sono-chemical

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s13391-013-6019-1

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title = "Silica encapsulation of sonochemically synthesized iron oxide nanoparticles",

abstract = "A facile sono-chemical approach was applied for the large scale synthesis of silica coated iron oxide magnetic nanoparticles (NPs) using inexpensive and non-toxic chemicals. The as-prepared silica coated magnetic iron oxide (Fe3O4@SiO2 core-shell) NPs have been characterized by XRD, TEM, EDS, and VSM. X-ray diffraction (XRD) and EDS analysis revealed that Fe3O4 NPs have been successfully coated by this simple method. Transmission electron microscopy (TEM) data demonstrated that the thickness of silica coating on iron oxide magnetic NPs is 10 - 15 nm on average. The magnetization curve from the vibrating sample magnetometer (VSM) measurement shows that the magnetization also decreased the as-synthesized silica coated iron oxide NPs compared to the freshly prepared bare iron oxide magnetic NPs, which is also evidence of the synthesis of Fe3O4@SiO2 core-shell NPs.",

keywords = "core-shell NPs, magnetic NPs, silica coating, sono-chemical",

author = "Islam, \{Md Nazrul\} and Mohamed Abbas and Brajalal Sinha and Joeng, \{Jong Ryul\} and Kim, \{Cheol Gi\}",

year = "2013",

month = nov,

doi = "10.1007/s13391-013-6019-1",

language = "English",

volume = "9",

pages = "817--820",

journal = "Electronic Materials Letters",

issn = "1738-8090",

publisher = "Springer Netherlands",

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TY - JOUR

T1 - Silica encapsulation of sonochemically synthesized iron oxide nanoparticles

AU - Islam, Md Nazrul

AU - Abbas, Mohamed

AU - Sinha, Brajalal

AU - Joeng, Jong Ryul

AU - Kim, Cheol Gi

PY - 2013/11

Y1 - 2013/11

N2 - A facile sono-chemical approach was applied for the large scale synthesis of silica coated iron oxide magnetic nanoparticles (NPs) using inexpensive and non-toxic chemicals. The as-prepared silica coated magnetic iron oxide (Fe3O4@SiO2 core-shell) NPs have been characterized by XRD, TEM, EDS, and VSM. X-ray diffraction (XRD) and EDS analysis revealed that Fe3O4 NPs have been successfully coated by this simple method. Transmission electron microscopy (TEM) data demonstrated that the thickness of silica coating on iron oxide magnetic NPs is 10 - 15 nm on average. The magnetization curve from the vibrating sample magnetometer (VSM) measurement shows that the magnetization also decreased the as-synthesized silica coated iron oxide NPs compared to the freshly prepared bare iron oxide magnetic NPs, which is also evidence of the synthesis of Fe3O4@SiO2 core-shell NPs.

AB - A facile sono-chemical approach was applied for the large scale synthesis of silica coated iron oxide magnetic nanoparticles (NPs) using inexpensive and non-toxic chemicals. The as-prepared silica coated magnetic iron oxide (Fe3O4@SiO2 core-shell) NPs have been characterized by XRD, TEM, EDS, and VSM. X-ray diffraction (XRD) and EDS analysis revealed that Fe3O4 NPs have been successfully coated by this simple method. Transmission electron microscopy (TEM) data demonstrated that the thickness of silica coating on iron oxide magnetic NPs is 10 - 15 nm on average. The magnetization curve from the vibrating sample magnetometer (VSM) measurement shows that the magnetization also decreased the as-synthesized silica coated iron oxide NPs compared to the freshly prepared bare iron oxide magnetic NPs, which is also evidence of the synthesis of Fe3O4@SiO2 core-shell NPs.

KW - core-shell NPs

KW - magnetic NPs

KW - silica coating

KW - sono-chemical

UR - https://www.scopus.com/pages/publications/84887940009

U2 - 10.1007/s13391-013-6019-1

DO - 10.1007/s13391-013-6019-1

M3 - Article

AN - SCOPUS:84887940009

SN - 1738-8090

VL - 9

SP - 817

EP - 820

JO - Electronic Materials Letters

JF - Electronic Materials Letters

IS - 6

ER -

Silica encapsulation of sonochemically synthesized iron oxide nanoparticles

Abstract

Keywords

UN SDGs

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