纳米零价铁（nZVI）插层的二维过渡金属碳化物（Ti3C2）对水中Cr（VI）的吸附

Adsorption of Cr（VI） in Water by Two-dimensional Transition Metal Carbide （Ti3C2） Intercalated with Cr（VI）

六价铬Cr(VI)的是制革废水中的主要污染物之一,实现制革废水的达标排放必须降低废水中Cr(VI)含量。本文利用纳米零价铁(nZVI)原位还原实现了对二维过渡金属碳化物(Ti3C2)的插层改性,利用扫面电镜(SEM)对该复合二维材料的结构进行了确认。与目前报道的其他二维材料相比,改性后的纳米复合材料nZVI-Ti3C2对Cr(VI)吸附效果优异,饱和吸附量可达58.92mg/g。吸附等温线表明该吸附过程符合Langmuir模型。

Cr(VI)is one of the main pollutants in leather industry.Reducing the amounts of Cr(VI)species in polluted water is a challenge for leather industry.In this article,the nano Zero Valent Iron(nZVI)are used to intercalate the Ti3C2 nanosheet,and the obtained nZVI-Ti3C2 nano-composite is characterized by SEM.Compared with other state-of-the-art 2D materials,this nano-composite exhibit a remarkable performance for Cr(VI)uptake,and the saturated amounts for Cr(VI)uptake arrives at 58.92 mg/g,and its sorption isotherm model fit the Langmuir model quite well.