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首页> 外文期刊>RSC Advances >Facile synthesis of few-layer MoS2 in MgAl-LDH layers for enhanced visible-light photocatalytic activity
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Facile synthesis of few-layer MoS2 in MgAl-LDH layers for enhanced visible-light photocatalytic activity

机译：在MgAl-LDH层中轻松合成几层MoS2以增强可见光光催化活性

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摘要

A new photocatalyst, few-layer MoS _(2) grown in MgAl-LDH interlayers (MoS _(2) /MgAl-LDH), was prepared by a facile two-step hydrothermal synthesis. The structural and photocatalytic properties of the obtained material were characterized by several techniques including powder X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), photoluminescence spectroscopy (PL) and UV-vis absorption spectroscopy. The MoS _(2) /MgAl-LDH composite showed excellent photocatalytic performance for methyl orange (MO) degradation at low concentrations (50 mg L ~(?1) and 100 mg L ~(?1) ). Furthermore, even for a MO solution concentration as high as 200 mg L ~(?1) , this composite also presented high degradation efficiency (>84%) and mineralization efficiency (>73%) at 120 min. The results show that the MoS _(2) /MgAl-LDH composite has great potential for application in wastewater treatment.
机译：通过简便的两步水热合成法制备了一种新型的光催化剂，即在MgAl-LDH中间层中生长的几层MoS _（2）（MoS _（2）/ MgAl-LDH）。通过多种技术表征了所得材料的结构和光催化性能，包括粉末X射线衍射（XRD），拉曼光谱，场发射扫描电子显微镜（FESEM），高分辨率透射电子显微镜（HRTEM），傅里叶变换红外光谱（FTIR），X射线光电子能谱（XPS），光致发光光谱（PL）和紫外可见吸收光谱。 MoS_（2）/ MgAl-LDH复合物在低浓度（50 mg L〜（？1）和100 mg L〜（？1））下对甲基橙（MO）的降解表现出优异的光催化性能。此外，即使MO溶液浓度高达200 mg L〜（？1），该复合材料在120分钟时也表现出高降解效率（> 84％）和矿化效率（> 73％）。结果表明，MoS_（2）/ MgAl-LDH复合材料在废水处理中具有广阔的应用前景。

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