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在液相中 ,以适当的温度、浓度 ,采用自组装方法 ,把贵重金属Ag负载到具有孔洞结构的螺旋藻内。经清洗和低温烘干处理后 ,研磨成粉即得纳米银 -螺旋藻复合材料。样品分别通过透射电子显微镜 (TEM)、X射线能谱成分分析 (EDAX)、红外光谱 (FTIR)等进行表征。透射电子显微镜(TEM)分析表述了纳米银粒子在螺旋藻中的分布情况及粒径分布 ;X射线能谱成分分析 (EDAX)和电子衍射花样分析确定了螺旋藻上负载的都是纳米银 ;红外光谱 (FTIR)研究分析了纳米银与螺旋藻的吸附机理。结果表明 ,纳米银粒子以窄的粒径分布约 1～ 12nm均匀而无团聚的分散在螺旋藻中。平均粒径约 4nm ,最小粒径 1nm
In the liquid phase, the precious metal Ag is loaded into the spirulina having a pore structure at a suitable temperature and concentration by a self-assembly method. After washing and drying at low temperature, the powder is pulverized to obtain nano-silver-spirulina composite material. The samples were characterized by transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDAX) and infrared spectroscopy (FTIR). Transmission electron microscopy (TEM) analysis of the distribution of silver nanoparticles in Spirulina and particle size distribution; X-ray energy spectrum analysis (EDAX) and electron diffraction pattern analysis confirmed that the load on Spirulina are nano silver; Infrared spectroscopy (FTIR) study analyzed the adsorption mechanism of silver nanoparticles and spirulina. The results show that the nano-silver particles with a narrow particle size distribution of about 1 ~ 12nm uniform and non-agglomeration dispersed in Spirulina. The average particle size is about 4 nm and the minimum particle size is 1 nm