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首页> 美国卫生研究院文献>Nanoscale Research Letters >Hydrothermal Synthesis of Silver Vanadium Oxide (Ag0.35V2O5) Nanobelts for Sensing Amines
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Hydrothermal Synthesis of Silver Vanadium Oxide (Ag0.35V2O5) Nanobelts for Sensing Amines

机译：水热法合成用于胺类的氧化钒银（Ag0.35V2O5）纳米带

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摘要

A simple hydrothermal method for the synthesis of Ag0.35V2O5 nanobelts with the assistance of sodium dodecyl sulfate (SDS) is reported in this study. The experimental variables that may affect the nanoparticle structures were investigated. And several advanced techniques, such as TEM, HRTEM, X-ray diffraction (XRD), were used to characterize the morphology and composition of the as-prepared nanobelts. The mechanism of the formation and growth of Ag0.35V2O5 nanobelts was also investigated and discussed. The results show that SDS, as a weak reducing agent, plays a crucial role in the formation of Ag0.35V2O5. According to N2 sorption isothermals, the as-prepared Ag0.35V2O5 nanobelts are found to exhibit relative high surface area. The gas sensing performance of the Ag0.35V2O5 nanobelts towards organic amine was tested. It is found that the nanobelts show superior sensitivity of amine(s) to V2O5 particles, lower detection limit (5 ppm), and higher selectivity of amine versus ammonia at an optimized working temperature of ~260 °C. Moreover, the density functional theory (DFT) simulation was conducted to better understand the sensing mechanism. These findings may be useful in designing promising materials to detect amine gases for medical or food industrial applications.Electronic supplementary materialThe online version of this article (doi:10.1186/s11671-015-1119-5) contains supplementary material, which is available to authorized users.
机译：这项研究报告了一种简单的水热法，借助十二烷基硫酸钠（SDS）合成Ag0.35V2O5纳米带。研究了可能影响纳米颗粒结构的实验变量。并使用了TEM，HRTEM，X射线衍射（XRD）等几种先进技术来表征所制备纳米带的形态和组成。还研究和讨论了Ag0.35V2O5纳米带的形成和生长机理。结果表明，SDS作为弱还原剂，在Ag0.35V2O5的形成中起着至关重要的作用。根据N 2吸附等温线，发现制备的Ag0.35V2O5纳米带表现出相对较高的表面积。测试了Ag0.35V2O5纳米带对有机胺的气敏性能。发现纳米带显示胺对V 2 O 5 颗粒具有较高的灵敏度，较低的检测限（5ppm）和较高的胺对氨选择性在〜260°C的最佳工作温度下。此外，进行了密度泛函理论（DFT）仿真，以更好地了解传感机制。这些发现对于设计有前景的材料以检测医疗或食品工业中的胺气很有用。电子补充材料本文的在线版本（doi：10.1186 / s11671-015-1119-5）包含补充材料，授权使用用户。

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