Controlled template-free hydrothermal synthesis of hematite nanoplatelets

被引：20

作者：

Sun, Qian-jin ^{[1
]}

Lu, Xue-gang ^{[1
]}

Liang, Gong-ying ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Sch Sci, Xian 710049, Peoples R China

来源：

MATERIALS LETTERS | 2010年 / 64卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Hematite; Nanoplatelets; Synthesis; Magnetic properties; LARGE-SCALE SYNTHESIS; NANORINGS;

D O I：

10.1016/j.matlet.2010.06.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ferromagnetic alpha-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 alpha-Fe2O3 can be obtained by adjusting the molar ratio of HSO3- to SO42-. Compared to short nanocolumns, nanoplatelets display a smaller saturation magnetization of 7.36 emu/g and a smaller coercivity value of 485 Oe. (C) 2010 Elsevier B.V. All rights reserved,

引用

页码：2006 / 2008

页数：3

共 14 条

[1] A study of the structural and catalytic effects of sulfation on iron oxide catalysts prepared from goethite and ferrihydrite precursors for methane oxidation [J].

Brown, ASC ;

Hargreaves, JSJ ;

Rijniersce, B .

CATALYSIS LETTERS, 1998, 53 (1-2) :7-13

[2] Hierarchically nanostructured magnetic hollow spheres of Fe3O4 and γ-Fe2O3:: Preparation and potential application in drug delivery [J].

Cao, Shao-Wen ;

Zhu, Ying-Jie ;

Ma, Ming-Yan ;

Li, Liang ;

Zhang, Ling .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (06) :1851-1856

[3]

CORNELL RM, 1996, IRON OXIDES STRUCTUR, P464

[4] Large-Scale Synthesis of Single-Crystalline Iron Oxide Magnetic Nanorings [J].

Jia, Chun-Jiang ;

Sun, Ling-Dong ;

Luo, Feng ;

Han, Xiao-Dong ;

Heyderman, Laura J. ;

Yan, Zheng-Guang ;

Yan, Chun-Hua ;

Zheng, Kun ;

Zhang, Ze ;

Takano, Mikio ;

Hayashi, Naoaki ;

Eltschka, Matthias ;

Klaeui, Mathias ;

Ruediger, Ulrich ;

Kasama, Takeshi ;

Cervera-Gontard, Lionel ;

Dunin-Borkowski, Rafal E. ;

Tzvetkov, George ;

Raabe, Joerg .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (50) :16968-16977

[5] Synthesis of Uniform Ferrimagnetic Magnetite Nanocubes [J].

Kim, Dokyoon ;

Lee, Nohyun ;

Park, Mihyun ;

Kim, Byung Hyo ;

An, Kwangjin ;

Hyeon, Taeghwan .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (02) :454-+

[6] Sensing characteristics of NIR localized surface plasmon resonances in gold nanorings for application as ultrasensitive biosensors [J].

Larsson, Elin M. ;

Alegret, Joan ;

Kall, Mikael ;

Sutherland, Duncan S. .

NANO LETTERS, 2007, 7 (05) :1256-1263

[7] Single-cystal hexagonal disks and rings of ZnO: Low-temperature, large-scale synthesis and growth mechanism [J].

Li, F ;

Ding, Y ;

Gao, PXX ;

Xin, XQ ;

Wang, ZL .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (39) :5238-5242

[8] Flux closure structures in cobalt rings [J].

Li, SP ;

Peyrade, D ;

Natali, M ;

Lebib, A ;

Chen, Y ;

Ebels, U ;

Buda, LD ;

Ounadjela, K .

PHYSICAL REVIEW LETTERS, 2001, 86 (06) :1102-1105

[9] Surfactant-assisted synthesis of α-Fe2O3 nanotubes and nanorods with shape-dependent magnetic properties [J].

Liu, Lu ;

Kou, Hui-Zhong ;

Mo, Wenling ;

Liu, Huajie ;

Wang, Yuqiu .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (31) :15218-15223

[10] Magnetic nanoparticles:: Synthesis, protection, functionalization, and application [J].

Lu, An-Hui ;

Salabas, E. L. ;

Schueth, Ferdi .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2007, 46 (08) :1222-1244

← 1 2 →