A simple and low-cost combustion method to prepare monoclinic VO2 with superior thermochromic properties.

Ziyi Cao,Xiudi Xiao,Yongjun Zhan,Gang Xu,Xuanming Lu,Haoliang Cheng

doi:10.1038/srep39154

Abstract

In this approach, the VO2 nanoparticles have been successfully fabricated via combusting the low-cost precursor solution consisted of NH4VO3, C2H6O2 and C2H5OH. By the XRD, TEM and XPS analysis, it can be found that the synthetic monoclinic VO2 is single crystal and no impurity is defined. After dispersing the VO2 nanoparticles into the polymer, the solar modulation of VO2-based composite film is up to 12.5% with luminous transmission and haze around 62.2% and 0.5%, respectively. In other words, the composite films show high performance of thermochromic properties. This could open an efficient way to fabricate low-cost and large-scale VO2 (M) nanoparticles and thermochromic films.

Highlights

In this approach, the VO2 nanoparticles have been successfully fabricated via combusting the low-cost precursor solution consisted of NH4VO3, C2H6O2 and C2H5OH
VO(acac)[2] and Bis (α-furylacrylic acid) oxovanadium (IV) complex is considered as the V source, which could fabricate VO2 nanoparticles
The Bis (α-furylacrylic acid) oxovanadium (IV) complex needs to be prepared by the time-consuming process, of which the yield rate is low[19]

Summary

Introduction

The VO2 nanoparticles have been successfully fabricated via combusting the low-cost precursor solution consisted of NH4VO3, C2H6O2 and C2H5OH. In the past several decades, different methods including sputting deposition[6], chemical vapour deposition(CVD)[7], sol-gol[8,9,10], pyrolysis[11,12] and hydro/solvothermal[13,14,15,16,17] have been developed for preparing VO2 (M) These methods suffer from some limitations such as harsh gas atmosphere with exactly controlled flow, time consuming or post-treatment with high-temperature. As part of an ongoing interest on preparation of VO2 (M), we propose a simple and low-cost method for preparing VO2 (M) nanoparticles with high purity and thermochromic performance.

Methods

Results

Conclusion