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采用新型超声喷雾共沉淀技术,以Fe(NO3)3、Al(NO3)3、Ba(NO3)2、Gd2O3、Cu(NO3)2和Na2S为原料制备Cu5FeS4,BaCu2S2,CuGd2S4,CuAlS24种金属硫化物纳米粉体,用X射线粉末衍射仪表征了多元金属硫化物纳米粒子的晶相结构;采用扫描电镜观察了多元金属硫化物的晶相形貌,并测定了纳米粒子从可见到近红外的胶体状吸收和透过光谱。研究表明不同化学组成的纳米硫化铜对近红外光都具有显著的吸收增强效应,同时对可见光波段具有很高的透过率,这种具有特殊光学吸收特性的纳米金属硫化物有望成为新型太阳能热屏蔽器件的新材料。
A series of metal sulfide sulfides such as Cu5FeS4, BaCu2S2, CuGd2S4 and CuAlS were prepared by a novel ultrasonic spray coprecipitation method using Fe (NO3) 3, Al (NO3) 3, Ba (NO3) 2, Gd2O3, Cu (NO3) 2 and Na2S as raw materials Nanopowder, the crystal structure of the multi-metal sulfide nanoparticles was characterized by X-ray powder diffractometry. The morphology of the multimetallic sulfides was observed by scanning electron microscopy, and the colloidal morphology of the nanoparticles from visible to near infrared Absorption and transmission spectra. The results show that nano-CuS nanoparticles with different chemical compositions have significant absorption enhancement effect on near-infrared light and high transmittance in the visible wavelength band. This kind of nano-metal sulfide with special optical absorption properties is expected to become a new type of solar heat New material for shielding devices.