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ผลลัพธ์ (อังกฤษ) 1:

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ผลลัพธ์ (อังกฤษ) 3:

2. Materials and methods.All the reagents zinc acetate, dihydrate (Merck), sodium hydroxide (Merck), chitosan (India sea foods), used in the present. Study were of analytical grade. The ZnO nanospheres and ZnO triangular nanostructures were synthesized by a novel precipitation. Technique using 2% acetic acid solution of chitosan (80% deacetylated) as capping agent. Zinc acetate dihydrate was stirred. With 0.05% chitosan solution for 24 h and it was precipitated using aqueous solution of sodium hydroxide (NaOH). The molar. Ratio of zinc acetate and NaOH solution is 1: 1. The stirring was continued for 12 h to complete the precipitation. The precipitate. Was filtered dried and, then calcined at 550 ° C to obtain, ZnO nanospheres. When the synthesis conditions were modified. In such a way that zinc acetate, and NaOH was taken in millimole concentration at the ratio of 1: 6 ZnO triangular, nanostructures. Were obtained.Characterization: The synthesized nanomaterials were characterized by various analytical tools. Powder X-ray diffraction. Data was collected with a Bruker AXS D8 Advance X-ray diffractometer using Cu K α (λ = 1.54 BC). Scanning electron micrographs. Were taken with FEI Quanta FEG 200 High Resolution Scanning Electron Microscope. Transmission electron micrographs were. Taken with FEI Quanta High Resolution Transmission Electron Microscope. The UV - Vis spectra were recorded with a Varian Cary. Bio 100 UV Spectrophotometer.