Ultrasonic-assisted preparation of metastable hexagonal MoO3 nanorods and their transformation to microbelts

Zhuangzhi Wu; Dezhi Wang; Xun Liang; Aokui Sun

doi:10.1016/j.ultsonch.2010.06.004

Ultrasonic-assisted preparation of metastable hexagonal MoO3 nanorods and their transformation to microbelts

Ultrason Sonochem. 2011 Jan;18(1):288-92. doi: 10.1016/j.ultsonch.2010.06.004. Epub 2010 Jun 30.

Authors

Zhuangzhi Wu¹, Dezhi Wang, Xun Liang, Aokui Sun

Affiliation

¹ Key Laboratory of Ministry of Education for Non-ferrous Materials Science and Engineering, School of Materials Science and Engineering, Central South University, Changsha 410083, China.

PMID: 20655270
DOI: 10.1016/j.ultsonch.2010.06.004

Abstract

Metastable hexagonal h-MoO(3) nanorods were synthesized by a simple sonochemical method, and then were transformed into thermodynamically stable a-MoO(3) microbelts by calcination. The obtained samples were characterized by X-ray diffraction (XRD), differential thermal analysis (DTA), field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). It was found that the as-prepared h-MoO(3) nanorods were of 0.2-1.2 μm in width and 1-6 μm in length. A possible formation and growth mechanism of hexagonal MoO(3) nanorods is proposed, in which ultrasound plays a crucial role and cannot be ignored. Moreover, the effect of temperature on the transformation process by calcination is investigated and a possible growth process of microbelts is also discussed.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Molybdenum / chemistry
Nanotubes / chemistry*
Oxides / chemical synthesis*
Oxides / chemistry
Particle Size
Thermodynamics*
Ultrasonics*

Substances

Oxides
molybdenum trioxide
Molybdenum