Preparation of three-dimensionally ordered macroporous perovskite materials

被引：13

作者：

Fang JunFei ^{[1
]}

Xuan YiMin ^{[1
]}

Li Qiang ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Power Engn, Nanjing 210094, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 2011年 / 56卷 / 20期

关键词：

polystyrene spheres; colloidal crystal template; 3DOM; perovskite-type materials; thermochromic materials; COLLOIDAL CRYSTALS; PHOTONIC CRYSTALS; INVERSE OPAL; SILICA;

D O I：

10.1007/s11434-011-4531-y

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this paper, we use La0.8Sr0.2MnO3 and La0.7Ca0.2Sr0.1MnO3 as examples to demonstrate a preparation method for three-dimensionally ordered macroporous (3DOM) perovskite thermochromic materials. Polystyrene spheres with an average diameter of 220 nm were self-assembled into a three-dimensionally ordered colloidal crystal template. A mixed metal nitrate solution prepared using La(NO3)(3)center dot 6H(2)O, Ca(NO3)(2)center dot 4H(2)O, Sr(NO3)(2), Mn(CH3COO)(2)center dot 4H(2)O and an ethanol precursor was used to fill the interstitial voids of the polystyrene colloidal crystal templates. 3DOM La0.8Sr0.2MnO3 and La0.7Ca0.2Sr0.1MnO3 materials were then obtained after the sphere templates were removed via drying and calcination. The results show that the framework of the 3DOM materials can have different thicknesses and pore shrinkage rates by varying the filling times. In addition, the Curie temperatures of the 3DOM and bulk La0.8Sr0.2MnO3 materials can be varied by altering the preparation method.

引用

页码：2156 / 2161

页数：6

共 23 条

[1] Large-scale ZnO inverse opal films fabricated by a sol-gel technique [J].

Abramova, Vera ;

Sinitskii, Alexander .

SUPERLATTICES AND MICROSTRUCTURES, 2009, 45 (06) :624-629

[2]

Cong HL, 2003, CHEM J CHINESE U, V24, P1489

[3] Stop band shift based chemical sensing with three-dimensional opal and inverse opal structures [J].

Kuo, Cheng-Yu ;

Lu, Shih-Yuan ;

Chen, Shengfu ;

Bernards, Matt ;

Jiang, Shaoyi .

SENSORS AND ACTUATORS B-CHEMICAL, 2007, 124 (02) :452-458

[4] Epitaxially grown colloidal crystals of silica microspheres on patterned substrate of triangular arrays [J].

Lee, Wonmok ;

Braun, Paul V. .

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, 2007, 27 (5-8) :961-967

[5] Macroporous ordered titanium dioxide (TiO2) inverse opal as a new label-free immunosensor [J].

Li, Jianlin ;

Zhao, Xiangwei ;

Wei, Hongmei ;

Gu, Zhong-Ze ;

Lu, Zuhong .

ANALYTICA CHIMICA ACTA, 2008, 625 (01) :63-69

[6]

[李强 LI Qiang], 2009, [工程热物理学报, Journal of Engineering Thermophysics], V30, P1005

[7] A new synthesis process and characterization of three-dimensionally ordered macroporous ZrO2 [J].

Li, Shi ;

Zheng, Jingtang ;

Yang, Welya ;

Zhao, Yucui .

MATERIALS LETTERS, 2007, 61 (26) :4784-4786

[8]

Li W, 2006, J INORG MATER, V21, P473

[9]

LI XW, 1989, FUNCT POLYM, V2, P267

[10] Calculation of photonic energy bands of self-assembled-type TiO2 photonic crystals as dye-sensitized solar battery [J].

Matsushita, Sachiko ;

Fujiwara, Ryo ;

Shimomura, Masatsugu .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2008, 313 :617-620

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