One-pot green synthesis, characterizations, and biosensor application of self-assembled reduced graphene oxide-gold nanoparticle hybrid membranes.
One-pot green synthesis, characterizations, and biosensor application of self-assembled reduced graphene oxide-gold nanoparticle hybrid membranes.
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DOI：
10.1039/c3tb21270j
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发表时间：
2013-11
期刊：
影响因子：
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通讯作者：
Panpan Zhang;Xiaoyuan Zhang;Siyu Zhang;Xining Lu;Qing Li;Zhiqiang Su;Gang Wei
中科院分区：
文献类型：
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作者：
Panpan Zhang;Xiaoyuan Zhang;Siyu Zhang;Xining Lu;Qing Li;Zhiqiang Su;Gang Wei
本文报道了一种简便的“一锅法”绿色合成方法，制备了还原氧化石墨烯-金纳米粒子（RGO-AuNP）在液-气界面上的自组装膜。采用原子力显微镜、扫描电子显微镜、透射电子显微镜、紫外-可见光谱、傅里叶变换红外光谱、X射线衍射和拉曼光谱对所得的RGO-AuNP杂化膜进行了表征，证明葡萄糖成功地同步还原了GO和氯金酸（HAuCl 4）。此外，实验数据表明，RGO-AuNP杂化膜的自组装和形成主要受RGO和AuNP之间的布朗运动和静电相互作用的控制，并且杂化膜中AuNP的包封可以通过改变HAuCl 4的浓度来容易地调节。所形成的功能性半透明RGO-AuNP杂化膜在各种有机和无机溶剂中非常稳定，并且可用于制造新型过氧化氢（H2 O2）的非酶安培生物传感器。该传感器的线性范围为0.25 ~ 22.5mM，检出限为6.2 μM（S/N = 3），选择性高，稳定性好。这种一锅法绿色制备类石墨烯多层杂化功能膜的方法在生物传感、催化、储能等领域具有广阔的应用前景。
We report here a facile one-pot green synthesis method to prepare a self-assembled membrane of reduced graphene oxide-gold nanoparticle (RGO-AuNP) nanohybrids at a liquid-air interface. The obtained sandwich-like multilayer RGO-AuNP hybrid membranes were characterized by atomic force microscopy, scanning electron microscopy, transmission electron microscopy, UV-vis spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and Raman spectroscopy, and the obtained results prove that GO and chloroauric acid (HAuCl4) were synchronously reduced by glucose successfully. In addition, the experimental data indicate that the self-assembly and formation of RGO-AuNP hybrid membranes are mainly governed by the Brownian motion and electrostatic interaction between RGO and AuNPs, and the encapsulation of AuNPs in the hybrid membrane can be easily adjusted by changing the concentration of HAuCl4. The created functional semi-transparent RGO-AuNP hybrid membranes are very stable in various organic and inorganic solvents, and can be used to fabricate a novel nonenzymatic amperometric biosensor of hydrogen peroxide (H2O2). The fabricated H2O2 biosensor reveals a wide linear range from 0.25 to 22.5 mM, low detection limit of 6.2 μM (S/N = 3), high selectivity, and long-term stability. It is expected that this one-pot green method for fabricating sandwich-like multilayer hybrid functional membranes has broad applications in biosensing, catalysis, and energy storage.