研究目的
The aim of the presented work devoted for synthesis and preparation of transition metal oxide silver vanadate nanowires to be dispersed on a natural polymeric matrix (chitosan) with variable mass fraction for the enhancement of both optical and antibacterial characteristics of synthesized nanocomposite. The aim also extended to introduce a correlation between optical energy gap or nanoparticle dopant concentration with the activity index against different pathogenic grams.
研究成果
Prepared nanocomposites show observable antibacterial activity which may be correlated to the optical energy gap or nanoparticle content within the polymeric matrix. A direct relationship between filler content and sample activity against different grams were noted. Synthesized samples suggested being used with mentioned nanoparticle concentration in different medical applications.
研究不足
The antibacterial activity of the nanomaterials composites containing 2.5 ml of silver vanadate showed no antimicrobial activity against (Escherichia coli, Pseudomonas aeuroginosa, and Bacillus subtilis). Therefore, the smaller is the concentration of silver vanadate, the smaller will be of the radius of inhabitation zone, demonstrated its poor effectiveness.
1：Experimental Design and Method Selection:
Synthesis of silver vanadate nanorods via chemical precipitation route at room temperature. Preparation of chitosan samples filled with pre-calculated amounts of synthesized silver vanadate nano-rods via ordinary casting route.
2：Sample Selection and Data Sources:
Ammonium trioxovanadate (NH4VO3) and Silver Nitrate (AgNO3) were purchased from Sigma-Aldrich, Germany and Bio Basic Canada Inc., respectively. Chitosan (Cs) polymer was obtained from Aldrich Co.
3：List of Experimental Equipment and Materials:
Thermo Scientific Nicolet iS10, USA for FTIR, DIANO Corporation-USA for XRD, V-570 UV/Vis–NIR, JASCO, Japan for UV/Vis absorption spectra, SEM-JEOL JSM 6510 LV for SEM, and Zetasizer nano series (Malvern Instruments Ltd, UK) for Zeta potential.
4：Experimental Procedures and Operational Workflow:
The mixture was subjected to ultra-high sonication for 15 min at room temperature. Final mixture poured into plastic Petri dishes kept at 50 °C for 3 days to remove any water traces.
5：Data Analysis Methods:
FTIR, UV/Vis spectroscopy, XRD, TEM, SEM, and ATR-FTIR were used to investigate the structure, optical properties and stability of silver vanadate filled Chitosan matrix.
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