ture of the Zno nanoparticles in the alginate matrix. The results of the XRD analysis of the a-zno-1 and a-zno-3 samples were similar to that of a-Zno-2 and for this reason they will not be reported. nanocomposite film is shown in The XRD spectrum of a-zno-2 Fig. 1. he broad diffraction peak positioned at low angles originates from the alginate matrix while the other peaks correspond to(002), (10 1), (102), (1 1 0) and(103) planes of hexaonal the onal bulk Zno(Sawada, Wang, & Sleigh, 1996). The transmission microscopy(TEM) images of the a-Zno a Zno 2 and electron a-Zno-3 samples are presented in Figs. 2a, 3a and 4a The micrographs depict a large number of spherical particles well dispersed in the alginate matrix. The corresponding electron diffraction pattern (incat in Fig 3 a) shows that the obtained Zno nanoparticles are poly crystalline.