Sandwichlike Magnesium Silicate/Reduced Graphene Oxide Nanocomposite for Enhanced Pb2+ and Methylene Blue Adsorption

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• 作者：Chen-Xi Gui ; Qian-Qian Wang ; Shu-Meng Hao ; Jin Qu ; Pei-Pei Huang ; Chang-Yan Cao ; Wei-Guo Song ; Zhong-Zhen Yu
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2014
• 出版时间：August 27, 2014
• 年：2014
• 卷：6
• 期：16
• 页码：14653-14659
• 全文大小：457K
• ISSN：1944-8252

文摘

A sandwichlike magnesium silicate/reduced graphene oxide nanocomposite (MgSi/RGO) with high adsorption efficiency of organic dye and lead ion was synthesized by a hydrothermal approach. MgSi nanopetals were formed in situ on both sides of RGO sheets. The nanocomposite with good dispersion of nanopetals exhibits a high specific surface area of 450 m²/g and a good mass transportation property. Compared to MgSi and RGO, the mechanical stability and adsorption capacity of the nanocomposite is significantly improved due to the synergistic effect. The maximum adsorption capacities for methylene blue and lead ion are 433 and 416 mg/g, respectively.

Keywords:

magnesium silicate; reduced graphene oxide; lead ion; nanocomposite; adsorption