Seaweed-ZnO Composite for Better Antibacterial Properties

作者：Pandimurugan R; Thambidurai S^*

来源：Journal of Applied Polymer Science, 2014, 131(20): 40948.

DOI：10.1002/app.40948

• biopolymers and renewable polymers
• nanoparticles
• nanowires and nanocrystals
• polysaccharides
• X-ray

Brown seaweed Padina tetrastromatica (PTS)-Zinc oxide (ZnO) composites were prepared by chemical precipitation method. The characteristic peaks of PTS and ZnO were confirmed by Fourier transform infrared spectroscopy. X-ray diffraction study was confirmed the formation of ZnO with hexagonal wurtzite phase. Surface morphology and particle's distribution of ZnO were characterized by scanning electron microscopy. Transmission Electron microscopy image reveals that ZnO nanorods are in the size range of 14-164 nm having uniformly blended with polysaccharide of seaweed. Ultraviolet-Visible absorption spectra indicated the sharp absorption peak at 219 nm and broad absorption peak in the 250-350 nm range. Fluorescence spectra shows the broad blue-violet emissions is around at 380-480 nm. Because of the interaction between polysaccharide and ZnO nanorods/particles, the prepared seaweed-ZnO composite exhibit better antibacterial activity than pure ZnO nanoparticles.

• 出版日期2014-10-15