Liang Xiu, You Tingting, Liu Dapeng, Lang Xiufeng, Tan Enzhong, Shi Jihua, Yin Penggang, Guo Lin
Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of the Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing, China.
Phys Chem Chem Phys. 2015 Apr 21;17(15):10176-81. doi: 10.1039/c5cp00908a.
Graphene-based nanocomposites have recently attracted tremendous research interest in the field of catalysis due to their unique optical and electronic properties. However, direct observation of enhanced plasmon-driven catalytic activity of Au nanoparticles (NPs) supported on reduced graphene oxides (Au/rGO) has rarely been reported. Herein, based on the reduction from 4-nitrobenzenethiol (4-NBT) to p,p'-dimercaptoazobenzene (DMAB), the catalytic property of Au/rGO nanocomposites was investigated and compared with corresponding Au NP samples with similar size distribution. Our results show that Au/rGO nanocomposites could serve as a good catalytic and analytic platform for plasmon-driven chemical reactions. In addition, systematic comparisons were conducted during power- and time-dependent surface-enhanced Raman scattering (SERS) experiments, which exhibited a lower power threshold and higher catalytic efficiency for Au/rGO as compared to Au NPs toward the reaction.
基于石墨烯的纳米复合材料因其独特的光学和电子特性，近年来在催化领域引起了巨大的研究兴趣。然而，关于负载在还原氧化石墨烯上的金纳米颗粒（Au/rGO）增强的等离子体驱动催化活性的直接观察报道很少。在此，基于4-硝基苯硫酚（4-NBT）还原为对，对'-二巯基偶氮苯（DMAB），研究了Au/rGO纳米复合材料的催化性能，并与具有相似尺寸分布的相应金纳米颗粒样品进行了比较。我们的结果表明，Au/rGO纳米复合材料可作为等离子体驱动化学反应的良好催化和分析平台。此外，在功率和时间依赖的表面增强拉曼散射（SERS）实验中进行了系统比较，结果表明，与金纳米颗粒相比，Au/rGO对该反应表现出更低的功率阈值和更高的催化效率。
