研究目的
Investigating the effect of calcination on the physical and optical properties of Zn2SiO4 composite prepared by impregnation of ZnO on SiO2 amorphous nanoparticles.
研究成果
The study successfully synthesized ZnO-Zn2SiO4 composite using a wet chemical impregnation method followed by calcination. The formation of Zn2SiO4 phase was observed at temperatures higher than 800 °C, which is lower than conventional solid state sintering temperature. The composite exhibited promising optical properties, making it a potential candidate for phosphor materials in photonic and opto-electronic applications.
研究不足
The study focuses on the synthesis and characterization of Zn2SiO4 composite using a specific method. The potential limitations include the scalability of the synthesis method and the need for further optimization of the calcination process to enhance the optical properties for specific applications.
1：Experimental Design and Method Selection:
The study used a wet chemical impregnation method followed by calcination to synthesize Zn2SiO4 composite. Amorphous SiO2 nanoparticles were mixed with aqueous zinc nitrate, dried, and subjected to calcination at various temperatures.
2：Sample Selection and Data Sources:
Amorphous SiO2 nanoparticles were prepared by a simple precipitation process and mixed with zinc nitrate hexahydrate.
3：List of Experimental Equipment and Materials:
X-ray diffraction (XRD) (PANalytical X’pert PRO PW 3040 MPD), thermal analysis (Mettler Toledo TGA/DSC 1HT), field emission scanning electron microscopy (FESEM) (FEI NOVA NanoSEM 230), transmission electron microscopy (TEM) (Hitachi H-7100), and UV-Visible (Shimadzu UV-3600) spectrometer.
4：Experimental Procedures and Operational Workflow:
The mixed solution was dried in an oven, ground, and heat treated at 600, 700, 800, 900, and 1000 °C. The samples were then characterized for structural, thermal, morphological, and optical properties.
5：Data Analysis Methods:
XRD patterns were analyzed for phase identification, FESEM and TEM for morphological analysis, and UV-Vis for optical band gap determination.
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