聚苯胺/硫化铜复合材料的制备及其近红外吸收性能

Preparation and near infrared absorbing property of polyaniline/CuS composites

摘要:

以五水硫酸铜（CuSO4∙5H2O）与硫粉（S）为原料，采用溶剂热法制备了花状硫化铜，通过正交实验法对PVP的用量、Cu:S（摩尔比）、反应时间以及反应温度等参数进行了优化；采用原位聚合复合制备了聚苯胺/硫化铜复合材料. 利用FT-IR、XRD、SEM、固体漫反射紫外-可见-近红外光谱对样品进行了表征和性能测试. 结果表明，在1.0 mL CuSO4∙5H2O（1.0 mol/L）溶液和0.064 g（2.0 mmol）硫粉（即Cu:S（摩尔比）为1:2）、0.25 g PVP、反应温度200 oC、反应时间6 h的条件下，制备了颗粒平均直径为5~8 μm的花状硫化铜；当硫化铜的用量为30 wt%时，聚苯胺/硫化铜复合材料的近红外吸收性能在650 nm处达到最强2.12 a.u..

Abstract:

In this work, the flower-like CuS was prepared by solvothermal method using CuSO4∙5H2O and S. The parameters, such as the mass of PVP, the mole ratio of Cu and S, the reaction time and the temperature, were carefully investigated by using the orthogonal matrix experimental method. Then, polyaniline/CuS composites were synthesized by in-situ polymerization and recombination method. The flower-like CuS was characterized by FT-IR, XRD and SEM. The near infrared absorbing capacity was test by Solid-state Diffuse Reflectance UV-Vis-NIR Spectra. The results indicate that the flower-like CuS with the diameter of 5~8 μm can be obtained under the best conditions for the mole ratio (Cu:S) of 1:2, the reaction temperature of 200 oC, the reaction time of 6 h and the mass of PVP of 0.25 g. The near infrared absorbing capacity of polyaniline/CuS composite adding 30 wt% CuS can achieve 2.1 a.u at 650 nm.