研究目的
Investigating the influence of precursor concentration on the structural, morphological, and optical properties of hematite (α-Fe2O3) nanoparticles synthesized via combustion method.
研究成果
The study successfully synthesized hematite (α-Fe2O3) nanoparticles via combustion method, demonstrating that precursor concentration significantly affects the nanoparticles' morphology, optical properties, and band gap. The decrease in precursor concentration led to a decrease in band gap energy and an increase in practical yield, suggesting potential for enhanced photocatalytic applications.
研究不足
The study focuses on the effect of precursor concentration on hematite nanoparticles' properties but does not explore the impact of other synthesis parameters like temperature variations or different precursors. The application potential in specific fields like photocatalysis or biomedical applications is not deeply investigated.
1：Experimental Design and Method Selection:
The nanoparticles were synthesized by combustion route using ferric nitrate, citric acid, and ammonia as precursors at an annealing temperature range of 600°C.
2：Sample Selection and Data Sources:
Samples were prepared by varying precursor concentrations (1mmol to 3mmol) and named as AB2, AB16, and AB
3：List of Experimental Equipment and Materials:
Powder X-ray diffractometer (Model D-8 Advance & Bruker AXS- XRD), Field emission scanning electron microscope FESEM (Hitachi S4800), Perkin Elmer model Lamda 950 UV-Vis Spectrometer, and Raman spectroscopy (Bruker RFS 27, Stand Alone FT Raman Spectrometer).
4：Experimental Procedures and Operational Workflow:
The synthesis involved mixing precursors, grinding to form slurry, magnetic stirring, heating in an open reactor, calcination, and characterization.
5：Data Analysis Methods:
XRD for phase purity, FESEM for morphological studies, UV-Vis spectroscopy for optical properties, and Raman spectroscopy for phase confirmation.
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