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The loading effect of Pt clusters on Pt/graphene nano sheets catalysts
Rikson Siburian1,2, Ab Malik Marwan Ali3, Kerista Sebayang4,5
1Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Padang Bulan, Medan, 20155, Indonesia. rikson@usu.ac.id.
Scientific Reports
|January 29, 2021
Summary
This study explores the chemical interactions between platinum (Pt) subnano-clusters and graphene nano sheets (GNS). Results indicate that platinum cluster size influences the chemical properties of these Pt/GNS catalysts.
Area of Science:
- Materials Science
- Nanotechnology
- Catalysis
Background:
- Graphene Nano Sheets (GNS) are advanced materials with unique properties.
- Platinum (Pt) clusters are crucial in various catalytic applications.
- Understanding the interaction between Pt and GNS is key for catalyst development.
Purpose of the Study:
- To investigate the chemical interaction between platinum subnano-clusters and GNS.
- To clarify the effect of platinum cluster size on Pt/GNS catalysts.
- To analyze the deposition and chemical state of Pt on GNS.
Main Methods:
- Graphene Nano Sheets (GNS) synthesized via modified Hummer's method.
- 1-7 wt.% Pt/GNS prepared using the impregnation method.
- Characterization using Thermogravimetric/Differential Thermal Analysis (TG/DTA), X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), and X-ray Photoelectron Spectroscopy (XPS).
Main Results:
- TG/DTA and TEM data confirmed successful deposition of Pt clusters on GNS.
- XRD analysis indicated the presence of Pt metal on GNS.
- XPS results verified the chemical interaction between Pt metal and GNS, evidenced by Pt 4f peaks.
Conclusions:
- Platinum subnano-clusters are effectively deposited and chemically interact with Graphene Nano Sheets.
- The size of platinum clusters appears to influence the catalytic properties of Pt/GNS.
- This research provides foundational insights into Pt/GNS catalyst systems.
