Au nano dumbbells catalyzed the cutting of graphene oxide sheets upon plasmon-enhanced reduction
Au nano dumbbells catalyzed the cutting of graphene oxide sheets upon plasmon-enhanced reduction
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DOI：
10.1039/c6ra05888d
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发表时间：
2016-05
期刊：
影响因子：
3.9
通讯作者：
Xiaotian Wang;Mingyun Zhu;Wanlin Fu;Chengqian Huang;Qing Gu;T. Zeng;Yunqian Dai;Yueming Sun
中科院分区：
文献类型：
--
作者：
Xiaotian Wang;Mingyun Zhu;Wanlin Fu;Chengqian Huang;Qing Gu;T. Zeng;Yunqian Dai;Yueming Sun
本研究提出了一种超快速、低成本的方法，在哑铃状金纳米棒的辅助下，通过光催化还原氧化石墨烯（GO）片来制备还原性氧化石墨烯（RGO）。金纳米粒子通过静电相互作用有效地负载在氧化石墨烯薄片表面，并作为氧化石墨烯薄片分裂的起始点。由于金纳米棒的局部表面等离子体共振（LSPR）特性产生的热电子，使得还原反应在15 min内完成。有趣的是，在这一过程中，金纳米棒的作用并不局限于促进还原。更重要的优点是，它们可以作为孔隙发生器，帮助将所有氧化石墨烯薄片切割成小块。这种光催化制备RGO的方法为该领域提供了一种新的策略，并为未来的应用创造了多种可能性。
This work presents an ultrafast and low-cost method to prepare reduced graphene oxide (RGO) by photocatalytic reduction of graphene oxide (GO) sheets with the assistance of dumbbell-like Au nanorods. Au nanoparticles are effectively loaded on the surface of GO sheets by electrostatic interaction and serve as the initiating points for the splitting of GO sheets. The existence of Au nanoparticles tremendously accelerates the process of the reducing reaction as well, in which the reduction completes in 15 min, ascribed to hot electrons generated by the localized surface plasmonic resonance (LSPR) property of Au nanorods. Interestedly, in this process, the function of Au nanorods is not limited to promoting the reduction. The more important merit is that they serve as pore generators which help to cut all of the GO sheets into small pieces. This photocatalytic method of RGO preparation provides a novel strategy in this field and creates various possibilities for future applications.