细胞壁模板诱导介观尺寸生物SiO~2材料合成

在人工培养年下施用正硅酸乙酯(TEOS)在结缕草叶外表皮细胞间隙，以细胞壁为模板生物矿化合成介观尺寸有序SiO~2材料，植物吸收和矿化构筑单元的硅化学形态显著影响有序SiO~2结构的形成，这反映出TEOS和细胞壁模板分子作用时有较强的结构控制能力和缓慢的凝聚硅化过程。X－ray(EDX)能谱分析显示一根完整的硅柱是含有SiO~2和C元素，表明TEOS部分水解后在植物外表皮细胞间隙合成了不同于自然的地球化学条件下形成SiO~2。

Cell wall template: Mediated synthesis of mesostructured biosllica

Cell wall template -mediated elaborate mesoscopic silica sttructuresin intercellular spaces of epidermal cells of zoysiagrass leaves were synthesized when SiO(OC~2H~5)~4 was supplied instead of monosilicic acid. The synthesis of organized silica structures in zoysia was correlated with the chemnical form of the silicon applied, reflecting a slower condensation from TEOS and thus providing greater opportunities for structural control by the underlying molecular substrates of cell walls. The composition was estimated by energy dispersive X-ray (EDX) spectra on a scnning electron microscope. All organized structures showed carbon, oxygen and silicon peaks, indicating that their formation differs from natural siliceous process.