Citation: TIAN Wen-Di, LI Xiao-Ze, CAO Jian-Liang, WANG Yan. Synthesis and Triethylamine Sensing Performance of Nanowires Assembled Leaf-like MoO₃ Nanostructure[J]. Chinese Journal of Inorganic Chemistry, ;2020, 36(10): 1948-1958. doi: 10.11862/CJIC.2020.223 shu

Synthesis and Triethylamine Sensing Performance of Nanowires Assembled Leaf-like MoO₃ Nanostructure

1.
College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China
2.
College of Safety Science and Engineering, State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo, Henan 454000, China

Corresponding author: WANG Yan, yanwang@hpu.edu.cn
Received Date: 11 March 2020
Revised Date: 22 June 2020

Figures(10)

A multichip leaf-like MoO₃ nanostructure assembled from one-dimensional nanowires has been synthesized by a simple solvothermal method using bis(acetylacetonato) dioxomolybdenum (Ⅵ) in a component solvent of acetic acid and deionized water at relatively lower temperature of 150℃. The field emission scanning electron microscopic (FESEM) and transmission electron microscopy (TEM) observations indicate that the multichip MoO₃ nanostructures are composed of a plurality of fine nanowires with rough surface. The X-ray powder diffraction (XRD), high-resolution transmission electron microscope (HRTEM) results signified that the MoO₃ nanoleaves with the orthorhombic system, a distorted octahedral structure. And, the dominant exposed crystal plane of the leaf-like MoO₃ was (021). In addition, the leaf-like MoO₃ possessed distinctive selectivity, ultrahigh sensitivity and response time (~5 s) towards 2.25 g·m^-3 triethylamine (TEA) at the operating temperature of 300℃, even attained 12.4 at the low detection level (4.5 mg·m^-3). Based on the analysis results, the growth and formation of crystalline phase was deemed to follow the oriented attachment mechanism. Accordingly, the enhanced sensing ability could be mainly ascribed to its unique nanostructure, linear combination of large density, and high specific surface area, which promote the substantial free diffusion of TEA gases into the blade hole, showing excellent response recovery.
- leaf-like MoO₃,
- nanostructure,
- gas sensing material,
- triethylamine,
- fast detection
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Synthesis and Triethylamine Sensing Performance of Nanowires Assembled Leaf-like MoO3 Nanostructure

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通讯作者: 陈斌, bchen63@163.com

Synthesis and Triethylamine Sensing Performance of Nanowires Assembled Leaf-like MoO₃ Nanostructure