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-  2017 

水热合成基于MoS_2二维材料的MoS_2/SnO_2与MoS_2/SnS_2复合物 Synthesis of MoS_2/SnO_2 and MoS_2/SnS_2 Composites Based on MoS_2 Thin Layer with Hydrothermal Method

Keywords: 水热法,硫化钼,二维材料,复合物

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Abstract:

MoS_2与其他半导体的异质结一般采用二次生长法,该方法比较费时,而且容易产生聚集,针对该问题,本文采用高压釜水热法一次制备出了MoS_2/SnO2与MoS_2/SnS_2的复合物,利用透射电子显微镜(TEM)、扫描电子显微镜(SEM)、X射线衍射(XRD)和紫外-可见-近红外分光光度计(UV-vis-NIR)对样品进行了表征.实验结果显示,复合结构中,MoS_2为二维少层结构,制备过程中的NH_4~+对MoS_2二维结构的成形有促进作用;通过调整钼源与锡源的比例,发现将SnCl_4与(NH_4)_6Mo_7O_(24)中金属离子摩尔比调整为9∶1时,可以稳定得到MoS_2/SnS_2的二维材料.通过分析其生长机理可知,金属盐水解引起的溶液酸碱性变化及相互影响,对复合结构的成型起主要作用

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