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利用壳聚糖(CS)易于成膜的特点,在有机物调制的条件下,通过异相成核生长制备了CS/硫化锰(MnS)纳米复合膜。研究了成膜条件对膜的水热稳定性和发光性能的影响,以及CS/MnS纳米复合膜对响应物的影响特征。通过荧光性能探索CS/MnS纳米复合膜的传感性能,研究结果表明,在水体系中除碘离子外,其他常见的离子对薄膜荧光发射没有显著影响,而CS/MnS纳米复合膜的荧光强度随着碘离子的浓度(0~5.40×10-4 mg/L)的增加而降低,荧光强度从388到204。但是荧光光谱的形状以及最大波长的位置不变。通过对其可逆性的测定,发现复合膜的可逆性很强,预期CS/MnS纳米复合膜有可能发展成为检测碘离子的一种重要的专用传感膜材料。
The CS / MnS nanocomposite films were prepared by heterogeneous nucleation and growth under the conditions of organic modulation by using the chitosan (CS) easy-to-form film. The effects of film formation conditions on the hydrothermal stability and luminescence properties of the films and the influence of the CS / MnS nanocomposite films on the response materials were investigated. The fluorescence properties of CS / MnS nanocomposite films were investigated. The results show that the common ions have no significant effect on the fluorescence emission of CS / MnS nanocomposite films except for iodide in water system. However, the fluorescence intensity of CS / MnS nanocomposite films With the iodine ion concentration (0 ~ 5.40 × 10-4 mg / L) increases, the fluorescence intensity decreases from 388 to 204. However, the shape of the fluorescence spectrum and the position of the maximum wavelength remain unchanged. Through the determination of its reversibility, the reversibility of the composite membrane was found to be very strong, and it is expected that the CS / MnS nanocomposite membrane may develop into an important special sensing membrane material for detecting iodide ions.