铂团簇对铂/石墨烯纳米片催化剂的负载效应。
The loading effect of Pt clusters on Pt/graphene nano sheets catalysts.
作者信息
Siburian Rikson, Ali Ab Malik Marwan, Sebayang Kerista, Supeno Minto, Tarigan Kerista, Simanjuntak Crystina, Aritonang Sri Pratiwi, Hutagalung Fajar
机构信息
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Padang Bulan, Medan, 20155, Indonesia.
Carbon Research Center, Universitas Sumatera Utara, Padang Bulan, Medan, 20155, Indonesia.
出版信息
Sci Rep. 2021 Jan 28;11(1):2532. doi: 10.1038/s41598-020-80472-1.
In this paper, we report about chemically interaction between Pt Subnano-Clusters on Graphene Nano Sheets (GNS). The aim of this research is to clarify the size effect of Pt clusters on Pt 1-7 wt.%/GNS. This research is an experimental laboratory research. GNS was synthesized by using modified Hummer's method and 1-7 wt.% Pt/GNS were prepared with impregnation method. Then, they were analyzed with TG/DTA, XRD, TEM and XPS, respectively. The results show that Pt clusters are well deposited on GNS (TG/DTA and TEM data). Those data also are consistent with XRD data. The weak and broad peaks appear at 2θ = 39°, indicating Pt metal exists on GNS. The state of Pt is confirmed by using XPS. The appearance of Pt 4f. peaks proves that Pt metal is chemical interaction on GNS. The size of Pt clusters may affect the chemically properties of Pt/GNS catalysts.
在本文中，我们报道了石墨烯纳米片（GNS）上铂亚纳米团簇之间的化学相互作用。本研究的目的是阐明铂团簇对1-7 wt.% Pt/GNS的尺寸效应。本研究是一项实验性的实验室研究。采用改进的Hummer法合成了GNS，并通过浸渍法制备了1-7 wt.% Pt/GNS。然后，分别用TG/DTA、XRD、TEM和XPS对其进行了分析。结果表明，铂团簇良好地沉积在GNS上（TG/DTA和TEM数据）。这些数据也与XRD数据一致。在2θ = 39°处出现弱而宽的峰，表明GNS上存在铂金属。通过XPS确定了铂的状态。Pt 4f峰的出现证明了铂金属在GNS上发生了化学相互作用。铂团簇的尺寸可能会影响Pt/GNS催化剂的化学性质。
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