研究目的
To develop a non-toxic cotton/polyester fabric with magnetic, photocatalytic, antibacterial, and antifungal properties through sonochemical synthesis of Fe3O4/ZnO nanocomposites, eliminating the need for high-temperature calcination.
研究成果
The sonochemical method successfully synthesized Fe3O4/ZnO nanocomposites on cotton/polyester fabric at 80°C without high-temperature calcination, resulting in multifunctional properties including magnetic (saturation magnetization 1.5 emu/g), self-cleaning, antibacterial, antifungal activities, low cytotoxicity, and enhanced mechanical properties. The optimized precursor concentrations were 3% W/V for both iron sulfate and zinc acetate. This approach is novel and sustainable, with potential for industrial applications in functional textiles.
研究不足
The study is limited to cotton/polyester fabric; other textile substrates were not tested. The synthesis conditions (e.g., temperature, pH) may not be optimal for all applications. Potential iron corrosion issues were noted but not fully analyzed, suggesting areas for future optimization.
1：Experimental Design and Method Selection:
The study used a sonochemical approach with an ultrasonic bath for in situ synthesis and deposition of Fe3O4/ZnO nanocomposites on fabric. A two-step procedure was employed: first, sonosynthesis of magnetite nanoparticles, followed by sonochemical generation of ZnO nanoparticles at 80°C and pH 11, using CTAB as a dispersing agent. Statistical design based on response surface methodology optimized precursor concentrations.
2：Sample Selection and Data Sources:
A 30/70 cotton/polyester fabric from Yazdbaft Co., Iran, was used. Precursors included ferrous sulfate, zinc acetate, CTAB, and sodium hydroxide from Merck, Germany, and methylene blue from Uhao Co., China.
3：List of Experimental Equipment and Materials:
Ultrasonic bath (Mercury Ultrasonic Cleaner, Iran, 50 kHz, 50 W), FE-SEM (MIRA, Tescan), EDX, XRD (XPert MPD, Philips, Holland), VSM (vibrating-sample magnetometer, Iran), Instron instrument (USA), Shirley fabric stiffness tester (USA), spectrophotometer (Gretag Macbeth 7000), and materials as listed.
4：Experimental Procedures and Operational Workflow:
Fabric was washed, then treated with iron sulfate and CTAB under ultrasonic irradiation for 2 h at 80°C and pH 11, followed by treatment with zinc acetate and CTAB for 1 h under same conditions. Samples were washed and dried. Characterization included weight change, self-cleaning tests, FESEM, EDX, XRD, antibacterial tests (AATCC100 guideline), antifungal tests, MTT cytotoxicity assay, magnetic properties measurement, tensile strength, and bending length tests.
5：Data Analysis Methods:
Statistical analysis using ANOVA and response surface methodology with Matlab for self-cleaning evaluation. Data were analyzed for significance with F-tests and P-values.
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