Polymorph-Tuned Synthesis of α- and β-Bi2O3 Nanowires and Determination of Their Growth Direction from Polarized Raman Single Nanowire Microscopy

被引：68

作者：

In, Juneho ^{[2
]}

Yoon, Ilsun ^{[2
]}

Seo, Kwanyong ^{[2
]}

Park, Jeunghee ^{[3
]}

Choo, Jaebum ^{[4
]}

Lee, Yonghoon ^{[1
]}

Kim, Bongsoo ^{[2
]}

机构：

[1] Mokpo Natl Univ, Dept Chem, Muan, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Chem, Taejon 305701, South Korea

[3] Korea Univ, Dept Chem, Jochiwon, South Korea

[4] Hanyang Univ, Dept Chem, Ansan, South Korea

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2011年 / 17卷 / 04期

关键词：

bismuth oxide; nanowires; photoluminescence; polarized Raman microscopy; polymorphism; DEPOSITION; SCATTERING; ELECTROLYTES; SPECTRA; FILM;

D O I：

10.1002/chem.201001684

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report polymorph-tuned synthesis of alpha- and beta-Bi2O3 nanowires and their single nanowire micro-Raman study. The single crystalline Bi2O3 nanowires in different phases (alpha and beta) were selectively synthesized by adjusting the heating temperature of Bi precursor in a vapor transport process. No catalyst was employed. Furthermore, at an identical precursor evaporation temperature, alpha- and beta- phase Bi2O3 nanowires were simultaneously synthesized along the temperature gradient at a substrate. The growth direction of alpha-Bi2O3 nanowires was revealed by polarized Raman single nanowire spectra. For thin beta-Bi2O3 nanowires with a very small diameter, the polarized Raman single nanowire spectrum was strongly influenced by the shape effect.

引用

页码：1304 / 1309

页数：6

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