Quartz crystal microbalance sensor based on affinity interactions between organic thiols and molybdenum disulfide nanoparticles
Quartz crystal microbalance sensor based on affinity interactions between organic thiols and molybdenum disulfide nanoparticles
复制标题
DOI：
10.1016/j.snb.2011.12.026
复制
发表时间：
2012-02
影响因子：
8.4
通讯作者：
G. Mustafa;M. Hussain;N. Iqbal;F. Dickert;P. Lieberzeit
中科院分区：
文献类型：
--
作者：
G. Mustafa;M. Hussain;N. Iqbal;F. Dickert;P. Lieberzeit
Molybdenum disulfide nanoparticles have been synthesized for the sensing of thiol vapors in air based on affinity interactions. Purity of MoS2nanoparticles was confirmed by X-ray diffraction (XRD) analysis and the particle size was determined by atomic force microscopy (AFM). In the current study, the relationship between nanoparticles size and sensitivity is investigated. The sensitivity of the sensor is linearly correlated to particle diameters. Newly fabricated sensors show detection limits of 30ppm for 1-butanethiol and less than 0.5ppm for 1-octanethiol. Furthermore, they exhibit minimal cross-reaction towards alkanes (2Hz response at 500ppm n-octane). They exhibit linear response behavior towards different concentrations of thiol. Furthermore the MoS2nanoparticles based system was optimized regarding to sensitivity, selectivity and influence of layer parameters on the sensor signals.
