纳米复合材料
材料科学
层状双氢氧化物
石墨烯
吸附
傅里叶变换红外光谱
化学工程
水溶液
X射线光电子能谱
氧化物
解吸
比表面积
一锅法合成
氢氧化物
纳米颗粒
核化学
插层(化学)
剥脱关节
水滑石
纳米技术
有机化学
化学
催化作用
冶金
工程类
作者
Tao Wen,Xi-Lin Wu,Changlun Chen,Xiangke Wang,An-Wu Xu
摘要
In this Article, we report a remarkably simple and efficient method for the preparation of layered double hydroxides and graphene oxide (LDHs/GO) nanocomposites with varying GO amounts via a hydrothermal process. The graphene nature in the resulting LDHs/GO nanocomposites was confirmed by X-ray diffraction (XRD), Fourier transformed infrared (FTIR) spectroscopy, field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), N2 adsorption-desorption, and X-ray photoelectron spectroscopy (XPS). The LDHs/GO nanocomposites exhibited swelling behavior in water and forming a gel. The adsorption performance of the LDHs/GO nanocomposites was evaluated for the removal of arsenate (As(V)) from aqueous solutions, and the results showed that the ratio of GO to LDHs in the nanocomposites significantly affected the adsorption capacity. Higher and lower amounts of GO in LDHs/GO nanocomposites showed lower adsorption capacity of As(V). A maximum adsorption capacity of 183.11 mg/g (2.44 mmol/g) was achieved on the LDHs/GO containing 6.0% GO due to the higher Brunauer-Emmett-Teller (BET) surface area than other samples. Owing to their high uptake capability of As(V), water-swellable LDHs/GO nanocomposites are expected to have potential applications as adsorbents for As(V) polluted water cleanup.
科研通智能强力驱动
Strongly Powered by AbleSci AI