State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
Nanoscale. 2011 Oct 5;3(10):4376-82. doi: 10.1039/c1nr10634a. Epub 2011 Sep 9.
In this paper, we reported a simple, aqueous-phase route to the synthesis of two-dimensional graphene/SnO(2) composite nanosheets (GSCN) hybrid nanostructures consisting of 5 nm Pt nanoparticles supported on the both sides of GSCN. Functional two-dimensional GSCN were obtained through the reduction of graphene oxide (GO) using SnCl(2) in the presence of polyelectrolyte poly(diallyldimethylammonium chloride) (PDDA). The main advantages of this preparation are that the reduction of GO, the formation of SnO(2) and the functionalization of GSCN were achieved simultaneously through one-pot reaction. GSCN/Pt ternary hybrid nanomaterials were generated by in situ reduction of negatively charged PtCl(6)(2-) precursors adsorbed on the positively charged surface of GSCN through electrostatic attraction. The as-synthesized GSCN/Pt ternary hybrid nanomaterials exhibited high cycle stabilization during the catalytic reduction of p-nitrophenol into p-aminophenol by NaBH(4). Additionally, our approach is expected to extend to other hybrid nanomaterials. We believe that the obtained GSCN/Pt ternary hybrid nanomaterials have great potential for applications in other field, such as electrochemical energy storage, sensors, and so on.
在本文中，我们报道了一种简单的水相合成二维石墨烯/氧化锡（SnO(2)）复合纳米片（GSCN）杂化纳米结构的方法，该结构由负载在 GSCN 两侧的 5nmPt 纳米颗粒组成。通过在聚电解质聚二烯丙基二甲基氯化铵（PDDA）存在下使用 SnCl(2)还原氧化石墨烯（GO），得到了功能化的二维 GSCN。该制备方法的主要优点是，通过一锅反应同时实现了 GO 的还原、SnO(2)的形成和 GSCN 的功能化。GSCN/Pt 三元杂化纳米材料是通过静电吸引，将带负电荷的 PtCl(6)(2-)前体吸附在带正电荷的 GSCN 表面上，然后原位还原生成的。所合成的 GSCN/Pt 三元杂化纳米材料在 NaBH(4)催化还原对硝基苯酚为对氨基酚的过程中表现出高循环稳定性。此外，我们的方法有望扩展到其他杂化纳米材料。我们相信，所得到的 GSCN/Pt 三元杂化纳米材料在电化学储能、传感器等其他领域具有很大的应用潜力。
