研究目的
To prepare SiO2-Graphene composite materials using two different methods and investigate their morphology for use as substrate materials.
研究成果
Two methods produced SiO2-G composites with different morphologies: one with SiO2 on graphene edges suitable for frontier reactions, and another with uniform coating on the surface for use as substrate materials. The choice of method depends on the intended application.
研究不足
The method with stirring carboxyl functionalized graphene and TEOS resulted in SiO2 mainly concentrated on the edge of graphene, limiting further reactions. The hydrothermal method provided more uniform coating but may have scalability or cost issues.
1：Experimental Design and Method Selection:
Two methods were used: stirring carboxyl functionalized graphene with TEOS at low temperature, and a one-pot hydrothermal reaction. SEM was employed for characterization.
2：Sample Selection and Data Sources:
Materials included graphite powder, TEOS, and various chemicals; samples were prepared as described.
3：List of Experimental Equipment and Materials:
Equipment included muffle furnace, vacuum oven, ultrasonicator, SEM, FTIR, XPS, XRD. Materials included KMnO4, H2O2, H3PO4, H2SO4, HHA, HCl, graphite, MCA, TEOS, ethanol, water, SDBS, PABA, NaNO2, NaOH.
4：Experimental Procedures and Operational Workflow:
Steps involved preparation of GO, carboxyl functionalized rGO, BADA, and SiO2-G composites through specific stirring, heating, washing, and drying processes.
5：Data Analysis Methods:
SEM for morphology, FTIR and XPS for functional group analysis, XRD for structural characterization.
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