Author/Authors :
Ding، نويسنده , , S.S. and Lei، نويسنده , , M. and Xiao، نويسنده , , H. and Zhang، نويسنده , , Y.C. and Huang، نويسنده , , K. and Liang، نويسنده , , C. and Wang، نويسنده , , Y.J. and Liu، نويسنده , , G. and Zhang، نويسنده , , R. and Fu، نويسنده , , X.L. and Fan، نويسنده , , D.Y. and Yang، نويسنده , , H.J. and Wang، نويسنده , , Y.G.، نويسنده ,
Abstract :
A systematic examination on the evolution of the morphology and size of barium oxalate hydrate (BaC2O4·0.5H2O) particles at room temperature in the presence of poly (sodium 4-styrene-sulfonate) (PSS) is presented. The results indicate that various parameters including the concentrations of both PSS and reactants, pH values and reaction time markedly influence the morphology and size of BaC2O4·0.5H2O. Small compact spheres, coral-like spheres, big fluffy spheres, dumbbell-like and flower-like crystals can be observed depending on the experimental conditions. It is found that PSS acts as an agent between the crystal and the positively charged ions. PSS can complex Ba2 +, and further promote the nucleation and the crystallization by being attached to the specific facets of BaC2O4·0.5H2O, which finally results in diverse morphologies of BaC2O4·0.5H2O.
Keywords :
Barium oxalate hydrate , Scanning electron microscope , Powder morphology , Biomineralization process
