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The Journal of Engineering

Synthesis and phase transition properties of VO2(M) hollow spheres with large thermal hysteresis width

Content Provider	IET Digital Library
Author	Zhang, Yifu
Abstract	Thermochromic VO2(M) has attracted increasing attention regarding the reduction of its thermal hysteresis width (ΔT c). However, little attention is paid to increase its ΔT c, which may have scientific importance and potential application in the future. Herein, VO2(M) hollow spheres assembled by nanoparticles are successfully synthesised using NH4VO3 as the vanadium source by a template-free method. Their diameters mainly range from 350 to 650 nm and thickness of shells is about 50 nm in average. The hydrothermal process plays a crucial role in the successful formation of VO2(M) hollow spheres. The phase transition temperature (T c) of VO2(M) hollow spheres is about 63°C in the heating curve and 32°C in the cooling curve. The ΔT c of VO2(M) hollow spheres reach as high as 31°C, which is distinctively higher than the reported values (ca. 5–20°C). The huge ΔT c may have potential applications in some fields in the future.
Starting Page	819
Ending Page	822
Page Count	4
Volume Number	14
e-ISSN	17500443
Issue Number	Issue 7, Jun (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/mnl/14/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/mnl.2018.5819
Journal	Micro & Nano Letters
Publisher Date	2019-06-26
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Cooling Curve Deposition from Liquid Phase (melts And Solutions) Heating Curve Hollow Spheres Hydrothermal Process Inorganic SemiConductor And Insulator Liquid Phase Deposition Low-Dimensional Structure: Growth, Structure And Nonelectronic Property Metal-insulator Transition Metal-insulator Transitions And Other Electronic Transitions Nanofabrication Nanoparticle Nanotube And Nanostructured Material Optical Property Phase Transition Property Size 350.0 Nm to 650.0 Nm Structure of Solid Clusters Template-free Method Thermal Hysteresis Width Thermo-optical And Photothermal Effect (condensed Matter) Thermo-optical Effect Thermochromic VO2(M) Vanadium Compound Vanadium Source VO2
Content Type	Text
Resource Type	Article

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