Sn2+掺杂硫化铜的制备及其性能

Preparation and Optical Properties of Sn2+ Doped Copper Sulfide

以硫脲(NH2CS)、氯化铜(CuCl2)、氯化亚锡(SnCl2)为原材料采用直接沉淀法制备掺杂Sn^2+的纳米CuS近红外光吸收材料,并对样品的光学性能和物相结构进行了表征,分析部分合成条件对其光吸收性能的影响。结果表明,所制备产物为纯相Sn^2+掺杂的CuS晶体,制备工艺条件将对产物的光吸收性能及光热转换性能产生直接影响,在反应体系铜与硫的物质量之比为1∶17,NaOH加入量0.008mol,Sn^2+掺杂量5%时,反应4h可得到光吸收性能较优的样品,样品光热转换效率为23.02%,与纯相未掺杂CuS样品相比,光热转换效率提高了80.97%。

Sn^2+ doped copper sulfide(CuS)near-infrared photothermal conversion materials were prepared with a direct precipitation process with copper chloride(CuCl2),thiourea(NH2CS)and stannous chloride(SnCl2)as raw materials.The crystal structure and optical properties of the as-synthesized samples were investigated.The influence of synthesis condition on phase structure and optical properties of the asprepared samples was researched.The results display that synthesis condition play a key role in optical absorption and the photothermal conversion.It is also found that the as-synthesized samples are single phase CuS crystals.When the mole ratio of CuCl2 to NH2CS is 1∶17,the MaOH addition is 0.008 mol,the doping concentration of Sn^2+ is 5%,and the reaction time is 4 h,the as-prepared sample displays excellent nearinfrared absorption properties.The photothermal conversion efficiency of the sample obtained with optimum synthesis conditions reached 23.04%,80.97% higher than that of the undoped pure copper sulfide sample.