Abstract
Single-crystal MoO3 micrometer to millimeter even centimeter belts were prepared via a novel route of oxidizing a discarded molybdenum disilicide heating element at 1000 °C for 3 h. The morphology and structure features, and growth mechanism of the products were evidently investigated by X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. The results indicated that the powdery and fibrous products were typical α-MoO3 belt-like structures which size could develop from micrometer to several millimeter even centimeter in length and up to 0.5 mm in width. It should be formed preferentially along the [001] direction via layer by layer growth to form 1-D single MoO3 belts by vapor-solid mechanism. Thermal and luminescence properties of the products were revealed by thermogravimetric analysis and differential thermal analysis and photoluminescence spectra that the resultant α-MoO3 belts had good thermal stability and characteristics of luminescence with a central peak at 481 nm. The MoO3 belts are of good potential being applied to luminescent and high temperature devices.
Highlights
Α-MoO3 phase is known to develop into one-dimension (1D) structures[15]
The oxidized products were consisted of two parts, powdery and fibrous crystals, in which the sizes of the former were 15~40 μm long, some of them could grow into flower-like and cross-shaped structures, and the later could develop to millimeter even centimeter long
A series of characterizations revealed that the α-MoO3 belt-like structures had good crystallinity, high purity and good thermal stability as well as luminescence property of 2.578 eV. It may be used in high-temperature devices and has good potential in light-emitting devices, which realized the recycling of discarded molybdenum disilicide heating element
Summary
Xiaolong Hou[1], Juntong Huang[1,2], Mingqiang Liu[1], Xibao Li1, Zhihui Hu1, Zhijun Feng[1], Meng Zhang1 & Junming Luo[1]. The results indicated that the powdery and fibrous products were typical α-MoO3 belt-like structures which size could develop from micrometer to several millimeter even centimeter in length and up to 0.5 mm in width It should be formed preferentially along the [001] direction via layer by layer growth to form 1-D single MoO3 belts by vapor-solid mechanism. We present a novel route to prepare single-crystal α-MoO3 micrometer to millimeter even centimeter belts via oxidizing a discarded molybdenum disilicide heating element on the top of corundum crucible at 1000 °C for 3 h. The relevant growth mechanisms of the belts were discussed, and the blue-indigo optical emissions of the α-MoO3 belts were revealed In this way, we could recycle the malfunctioned MoSi2 heating elements for the production of MoO3 single crystal belts for the design and application of blue-indigo optoelectronic devices
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
