研究目的
To clarify the effect of the dopants on antibacterial activity, crystalline size and structure morphology of MgO nanoparticles doped with Li+, Ag2+, and Cu2+ metals.
研究成果
The Li+ and Cu2+ doped MgO nanoparticles exhibit the best antibacterial activity against S.auerus due to an increase in defect concentration (AOS). The ionic radius of dopands is an important factor for the structural, morphological, and antibacterial activities of nanostructured MgO.
研究不足
The study is limited to the synthesis and characterization of MgO nanoparticles doped with Li+, Ag2+, and Cu2+ metals and their antibacterial activity against S.auerus. The effect of other dopants or bacterial strains was not investigated.
1：Experimental Design and Method Selection:
The MgO nanoparticles doped with Li+, Ag2+, and Cu2+ were synthesized by the gel method. The pH of the solution was adjusted to 5 using 1M of BDC, and the mixture was stirred until a thick white gel formed. The gel was dried and annealed at 600°C for 6 h.
2：Sample Selection and Data Sources:
Analytical grade chemicals were used without further purification.
3：List of Experimental Equipment and Materials:
Thermo gravimetric analysis (TGA Q500 V20.10 Build 36), Powder X-ray diffraction (PXRD) Analytical X'Pert Pro MPD with CuKα radiation, Scanning Electron Microscope (SEM; JEOL JSM-7600 F), High Resolution Transmission Electron Microscope (HRTEM; JEOL JEM-2100 F).
4：10 Build 36), Powder X-ray diffraction (PXRD) Analytical X'Pert Pro MPD with CuKα radiation, Scanning Electron Microscope (SEM; JEOL JSM-7600 F), High Resolution Transmission Electron Microscope (HRTEM; JEOL JEM-2100 F). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The antibacterial activity was studied using disc diffusion method against Staphylococcus aureus.
5：Data Analysis Methods:
The crystalline size was calculated by Scherer equation from XRD data.
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