In the first reaction the zn ions react with OH- creating the precursor zn(oH)42-, which upon heating bond together forming the cluster (Znxoy(OH)zl(z 2 2x)- (Li,Shi, Zhong. & Yin, 1999). During the zno crystal growth, this cluster is incorporated into the lattice. On the other hand, alginate poly G-sequences tend to adopt an ordered confirmation through dimerization in the presence of divalent metals (Morris, Rees, Thom, & Boyd, 1978; Brayner et al. 2007), so they act as a controlled environment for the growth of particles of nanometer sizes.