迈向具有脉冲激光沉积二氧化铈纳米颗粒的催化活性多孔石墨烯膜。
Towards Catalytically Active Porous Graphene Membranes with Pulsed Laser Deposited Ceria Nanoparticles.
作者信息
Plšek Jan, Drogowska-Horná Karolina Anna, Guerra Valentino L P, Mikšátko Jiří, Valeš Václav, Kalbáč Martin
机构信息
Department of Low-dimensional Systems, J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 18223, Prague 8, Czech Republic.
出版信息
Chemistry. 2021 Feb 24;27(12):4150-4158. doi: 10.1002/chem.202004779. Epub 2021 Jan 28.
Porous graphene with catalytically active ceria nanometre-size particles were prepared using pulsed laser deposition (PLD) on graphene produced through chemical vapour deposition (CVD). The reported process provided porous graphene containing ceria nanoparticles as confirmed by HR TEM and XPS. Isotopically labelled C graphene was employed to study desorption of the species containing carbon. Methanol adsorption was utilised to probe the nature of the catalytic activity of prepared ceria decorated graphene. The important role of graphene support for the stabilization of reduced ceria nanoparticles was finally confirmed. Increased dehydrogenation activity of graphene with ceria nanoparticles leading to CO and H formation was demonstrated.
采用脉冲激光沉积（PLD）法，在通过化学气相沉积（CVD）制备的石墨烯上制备了具有催化活性的氧化铈纳米尺寸颗粒的多孔石墨烯。如高分辨率透射电子显微镜（HR TEM）和X射线光电子能谱（XPS）所证实，所报道的工艺制备出了含有氧化铈纳米颗粒的多孔石墨烯。使用同位素标记的C石墨烯来研究含碳物种的脱附。利用甲醇吸附来探测所制备的氧化铈修饰石墨烯的催化活性本质。最终证实了石墨烯载体对还原氧化铈纳米颗粒稳定性的重要作用。证明了含有氧化铈纳米颗粒的石墨烯脱氢活性增加，导致了一氧化碳（CO）和氢气（H）的形成。
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