Reduced Graphene Oxide-Based Silver Nanoparticle-Containing Composite Hydrogel as Highly Efficient Dye Catalysts for Wastewater Treatment.
Reduced Graphene Oxide-Based Silver Nanoparticle-Containing Composite Hydrogel as Highly Efficient Dye Catalysts for Wastewater Treatment.
复制标题
还原氧化石墨烯基银纳米粒子复合水凝胶作为废水处理的高效染料催化剂
DOI：
10.1038/srep11873
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发表时间：
2015-07-17
影响因子：
4.6
通讯作者：
Li B
中科院分区：
文献类型：
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作者：
Jiao T;Guo H;Zhang Q;Peng Q;Tang Y;Yan X;Li B
通过在氧化石墨烯凝胶基质中同时还原氧化石墨烯和贵金属前驱体，成功制备了新型氧化石墨烯基含银纳米颗粒复合水凝胶。形成的水凝胶由交联纳米片的网络结构组成。所报道的方法是基于水凝胶基质内氧化石墨烯和醋酸银的原位共还原，形成氧化石墨烯基复合凝胶。同时，在凝胶复合体系中也实现了银纳米粒子的稳定。形成的银纳米颗粒均匀分布在复合凝胶内的还原氧化石墨烯纳米片表面。更重要的是，这种基于rgo的含银纳米颗粒的复合水凝胶基质作为一种潜在的催化剂，可以从水环境中去除有机染料污染物。有趣的是，制备的催化复合基质结构可以在反应后方便地从水环境中分离出来，这表明还原氧化石墨烯基纳米颗粒复合水凝胶在有机染料去除和废水处理方面具有潜在的大规模应用前景。
New reduced graphene oxide-based silver nanoparticle-containing composite hydrogels were successfully prepared in situ through the simultaneous reduction of GO and noble metal precursors within the GO gel matrix. The as-formed hydrogels are composed of a network structure of cross-linked nanosheets. The reported method is based on the in situ co-reduction of GO and silver acetate within the hydrogel matrix to form RGO-based composite gel. The stabilization of silver nanoparticles was also achieved simultaneously within the gel composite system. The as-formed silver nanoparticles were found to be homogeneously and uniformly dispersed on the surface of the RGO nanosheets within the composite gel. More importantly, this RGO-based silver nanoparticle-containing composite hydrogel matrix acts as a potential catalyst for removing organic dye pollutants from an aqueous environment. Interestingly, the as-prepared catalytic composite matrix structure can be conveniently separated from an aqueous environment after the reaction, suggesting the potentially large-scale applications of the reduced graphene oxide-based nanoparticle-containing composite hydrogels for organic dye removal and wastewater treatment.