Ultrathin BaTiO3 Nanowires with High Aspect Ratio: A Simple One-Step Hydrothermal Synthesis and Their Strong Microwave Absorption

被引：160

作者：

Yang, Jin ^{[1
,2
]}

Zhang, Jie ^{[1
,2
]}

Liang, Chongyun ^{[3
]}

Wang, Min ^{[1
,2
]}

Zhao, Pengfei ^{[1
,2
]}

Liu, Mengmei ^{[1
,2
]}

Liu, Jiwei ^{[1
,2
]}

Che, Renchao ^{[1
,2
]}

机构：

[1] Fudan Univ, Dept Mat Sci, Shanghai 200438, Peoples R China

[2] Fudan Univ, Adv Mat Lab, Shanghai 200438, Peoples R China

[3] Fudan Univ, Dept Chem, Shanghai 200438, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2013年 / 5卷 / 15期

关键词：

BaTiO3; nanowires; ultrathin; microwave absorption; transmission electron microscopy; CRYSTALLINE BARIUM-TITANATE; PEROVSKITE NANOSTRUCTURES;

D O I：

10.1021/am4014506

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, we report the facile synthesis of ultrathin barium titanate (BaTiO3) nanowires with gram-level yield via a simple one-step hydrothermal treatment. Our BaTiO3 nanowires have unique features: single crystalline, uniform size distribution and ultra high aspect ratio. The synergistic effects including both Ostwald ripening and cation exchange reaction are responsible for the growth of the ultrathin BaTiO3 nanowires. The microwave absorption capability of the ultrathin BaTiO3 nanowires is improved compared to that of BaTiO3 nanotorus,(1) with a maximum reflection loss as high as -24.6 dB at 9.04 GHz and an absorption bandwidth of 2.4 GHz (<-10 dB). Our method has some novel advantages: simple, facile, low cost and high synthesis yield, which might be developed to prepare other ferroelectric nanostructures. The strong microwave absorption property of the ultrathin BaTiO3 nanowires indicates that these nanowires could be used as promising materials for microwave-absorption and stealth camouflage techniques.

引用

页码：7146 / 7151

页数：6

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