Controlled template-free hydrothermal synthesis of hematite nanoplatelets

Qian Jin Sun; Xue Gang Lu; Gong Ying Liang

doi:10.1016/j.matlet.2010.06.025

Controlled template-free hydrothermal synthesis of hematite nanoplatelets

Qian Jin Sun
, Xue Gang Lu
, Gong Ying Liang

School of Physics

Xi'an Jiaotong University

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

19 Scopus citations

Abstract

Ferromagnetic α-Fe₂O₃ nanoplatelets with diameters of 100-140 nm and heights of 40-70 nm have been successfully prepared on a large-scale through double anion mediation hydrothermal method. The formation of the nanoplatelets depends on the molar ratio of hydrosulfite ions to sulfate ions. Nanoplatelets, short nanocolumns, polyhedra and a mixture of nanospheres and nanoellipsoids of α-Fe₂O₃ can be obtained by adjusting the molar ratio of HSO₃^- to SO ₄^2-. Compared to short nanocolumns, nanoplatelets display a smaller saturation magnetization of 7.36 emu/g and a smaller coercivity value of 485 Oe.

Original language	English
Pages (from-to)	2006-2008
Number of pages	3
Journal	Materials Letters
Volume	64
Issue number	18
DOIs	https://doi.org/10.1016/j.matlet.2010.06.025
State	Published - 30 Sep 2010

Keywords

Hematite
Magnetic properties
Nanoplatelets
Synthesis

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10.1016/j.matlet.2010.06.025

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title = "Controlled template-free hydrothermal synthesis of hematite nanoplatelets",

abstract = "Ferromagnetic α-Fe2O3 nanoplatelets with diameters of 100-140 nm and heights of 40-70 nm have been successfully prepared on a large-scale through double anion mediation hydrothermal method. The formation of the nanoplatelets depends on the molar ratio of hydrosulfite ions to sulfate ions. Nanoplatelets, short nanocolumns, polyhedra and a mixture of nanospheres and nanoellipsoids of α-Fe2O3 can be obtained by adjusting the molar ratio of HSO3- to SO 42-. Compared to short nanocolumns, nanoplatelets display a smaller saturation magnetization of 7.36 emu/g and a smaller coercivity value of 485 Oe.",

keywords = "Hematite, Magnetic properties, Nanoplatelets, Synthesis",

author = "Sun, \{Qian Jin\} and Lu, \{Xue Gang\} and Liang, \{Gong Ying\}",

year = "2010",

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doi = "10.1016/j.matlet.2010.06.025",

language = "英语",

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T1 - Controlled template-free hydrothermal synthesis of hematite nanoplatelets

AU - Sun, Qian Jin

AU - Lu, Xue Gang

AU - Liang, Gong Ying

PY - 2010/9/30

Y1 - 2010/9/30

N2 - Ferromagnetic α-Fe2O3 nanoplatelets with diameters of 100-140 nm and heights of 40-70 nm have been successfully prepared on a large-scale through double anion mediation hydrothermal method. The formation of the nanoplatelets depends on the molar ratio of hydrosulfite ions to sulfate ions. Nanoplatelets, short nanocolumns, polyhedra and a mixture of nanospheres and nanoellipsoids of α-Fe2O3 can be obtained by adjusting the molar ratio of HSO3- to SO 42-. Compared to short nanocolumns, nanoplatelets display a smaller saturation magnetization of 7.36 emu/g and a smaller coercivity value of 485 Oe.

AB - Ferromagnetic α-Fe2O3 nanoplatelets with diameters of 100-140 nm and heights of 40-70 nm have been successfully prepared on a large-scale through double anion mediation hydrothermal method. The formation of the nanoplatelets depends on the molar ratio of hydrosulfite ions to sulfate ions. Nanoplatelets, short nanocolumns, polyhedra and a mixture of nanospheres and nanoellipsoids of α-Fe2O3 can be obtained by adjusting the molar ratio of HSO3- to SO 42-. Compared to short nanocolumns, nanoplatelets display a smaller saturation magnetization of 7.36 emu/g and a smaller coercivity value of 485 Oe.

KW - Hematite

KW - Magnetic properties

KW - Nanoplatelets

KW - Synthesis

UR - https://www.scopus.com/pages/publications/77954525631

U2 - 10.1016/j.matlet.2010.06.025

DO - 10.1016/j.matlet.2010.06.025

M3 - 文章

AN - SCOPUS:77954525631

SN - 0167-577X

VL - 64

SP - 2006

EP - 2008

JO - Materials Letters

JF - Materials Letters

IS - 18

ER -

Controlled template-free hydrothermal synthesis of hematite nanoplatelets

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Keywords

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