Author_Institution :
Dept. of Chem. Eng., Chungbuk Nat. Univ., Cheongju, South Korea
Abstract :
Several plant leaf extracts (Pine, Persimmon, Ginkgo, Magnolia, Platanus, Cherry, etc.) were used and compared for their extracellular synthesis of nanomaterials. Stable gold, silver, copper, and platinum nanoparticles were formed by treating aqueous solution of HAuCl4, AgNO3, CuSO4·5H2O, and H2PtCl6·6H2O, respectively, with the plant leaf extracts as reducing agent. The biologically synthesized silver and copper nanoparticles showed antibacterial activities when they were coated on the surface of latex foam products. Graphene oxide, which was prepared by oxidation of natural graphite powders, was also reduced using plant leaf extracts. The reduced materials were characterized by elemental analysis, UV-vis spectroscopy, FT-IR, Raman spectroscopy, X-ray diffraction, transmission electron microscopy, thermo-gravimetric analysis, etc.
Keywords :
Fourier transform spectra; Raman spectra; X-ray diffraction; antibacterial activity; biomedical materials; botany; cellular biophysics; coatings; copper; foams; gold; graphite; hydrogen compounds; infrared spectra; materials preparation; microorganisms; nanomedicine; nanoparticles; oxidation; platinum; powders; silver; silver compounds; spectrochemical analysis; thermal analysis; transmission electron microscopy; ultraviolet spectra; visible spectra; Ag; AgNO3; Au; Cu; CuSO4-H2O; Fourier transform-infrared spectroscopy; H2PtCl6-H2O; HAuCl4; Pt; Raman spectroscopy; X-ray diffraction; antibacterial activities; aqueous solution; biological synthesis; cherry; coating; copper nanoparticles; elemental analysis; extracellular synthesis; ginkgo; gold nanoparticles; graphene oxide; latex foam products; magnolia; material preparation; nanomaterials; natural graphite powders; oxidation; persimmon; pine; plant leaf extracts; platanus; platinum nanoparticle; silver nanoparticles; thermo-gravimetric analysis; transmission electron microscopy; ultraviolet-visible spectroscopy; Antibacterial activity; Biology; Copper; Graphene; Nanoparticles; Silver;
