Self-assembly of iron oxide nanoparticles into oriented nanosheets by one-pot template-free synthesis at low pH

被引：15

作者：

Guan, Ningning ^{[1
]}

Sun, Dejun ^{[1
]}

Xu, Jian ^{[1
]}

机构：

[1] Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Shandong, Peoples R China

来源：

MATERIALS LETTERS | 2009年 / 63卷 / 15期

关键词：

Magnetic materials; Template-free; Self-assembly; Nanosheets; Polymers; CDTE NANOPARTICLES; NANOCRYSTALS; TEMPERATURE; SHEETS;

D O I：

10.1016/j.matlet.2009.02.046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Single-crystalline Fe3O4 nanosheets were obtained for the first time by simply adjusting the pH of a magnetite particle dispersion, using a hydrophilic terpolymer as stabilizer. We experimentally observed the magnetite nanoparticles spontaneous, template-free organization into nanosheets. This transformation Occurs in an acidic environment at the zeta potential minimum by the abrupt. oriented self-assembly of polymer-stabilized magnetite particles at room temperature. The driving forces of the oriented self-assembly process includes the interplay of anisotropic dipolar forces. electrostatic interactions and isotropic van der Waals forces. (C) 2009 Elsevier B.V. All rights reserved.

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收藏

页码：1272 / 1274

页数：3

相关论文

共 15 条

[1] Aggregation-based crystal growth and microstructure development in natural iron oxyhydroxide biomineralization products [J].

Banfield, JF ;

Welch, SA ;

Zhang, HZ ;

Ebert, TT ;

Penn, RL .

SCIENCE, 2000, 289 (5480) :751-754

[2] Large-scale synthesis of Fe3O4 nanosheets at low temperature [J].

Chin, Kok Chung ;

Chong, Ghee Lee ;

Poh, Chee Kok ;

Van, Li Hui ;

Sow, Chorng Haur ;

Lin, Jianyi ;

Wee, Andrew Thye Shen .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (26) :9136-9141

[3] The formation of a layer of Fe3O4 nanoplates between two carbon films [J].

Fan, Na ;

Ma, Xicheng ;

Liu, Xinzheng ;

Xu, Liqiang ;

Qian, Yitai .

CARBON, 2007, 45 (09) :1839-1846

[4] Synthes is and self-assembly of polymer-coated ferromagnetic nanoparticles [J].

Keng, Pei Yuin ;

Shim, Inbo ;

Korth, Bryan D. ;

Douglas, Jack F. ;

Pyun, Jeffrey .

ACS NANO, 2007, 1 (04) :279-292

[5] Van der Waals versus dipolar forces controlling mesoscopic organizations of magnetic nanocrystals [J].

Lalatonne, Y ;

Richardi, J ;

Pileni, MP .

NATURE MATERIALS, 2004, 3 (02) :121-125

[6] Improved magnetic anisotropy of monodispersed triangular nickel nanoplates [J].

Leng, Yonghua ;

Li, Yan ;

Li, Xingguo ;

Takahashi, Seiki .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (18) :6630-6633

[7] Nanoparticle assembly and transport at liquid-liquid interfaces [J].

Lin, Y ;

Skaff, H ;

Emrick, T ;

Dinsmore, AD ;

Russell, TP .

SCIENCE, 2003, 299 (5604) :226-229

[8] High-yield synthesis of large single-crystalline gold nanoplates through a polyamine process [J].

Sun, XP ;

Dong, SJ ;

Wang, EK .

LANGMUIR, 2005, 21 (10) :4710-4712

[9] Self-assembly of CdTe nanocrystals into free-floating sheets [J].

Tang, Zhiyong ;

Zhang, Zhenli ;

Wang, Ying ;

Glotzer, Sharon C. ;

Kotov, Nicholas A. .

SCIENCE, 2006, 314 (5797) :274-278

[10] Spontaneous organization of single CdTe nanoparticles into luminescent nanowires [J].

Tang, ZY ;

Kotov, NA ;

Giersig, M .

SCIENCE, 2002, 297 (5579) :237-240