Simple preparation and initial characterization of semi-amorphous hollow calcium silicate hydrate nanoparticles by ammonia- hydrothermal- template techniques
Simple preparation and initial characterization of semi-amorphous hollow calcium silicate hydrate nanoparticles by ammonia- hydrothermal- template techniques
复制标题
氨-水热-模板技术简单制备半非晶空心硅酸钙水合物纳米粒子并初步表征
DOI：
10.1007/s11051-013-1604-7
复制
发表时间：
2013
影响因子：
2.5
通讯作者：
Raymond V. Rivera Virtudazo
中科院分区：
文献类型：
--
作者：
Y. Yokoyama;S. Furukawa;R. Kaji ;and S. Adachi;Raymond V. Rivera Virtudazo
采用简单氨水热模板法（AHT）和酸处理法制备了半无定形中空水化硅酸钙纳米颗粒（CS10d120Hac）。结果表明，新合成的样品具有均匀的中空纳米内部，其中壳壁含有半无定形水合硅酸钙。AHT强化了由较弱静电接触组成的硅酸盐-氢氧化钙相互作用（Si-OH-Ca）形成的较强静电相互作用（Si-O-Ca），形成较薄的半无定形水合硅酸钙壳壁。这也为中空CS10d120Hac的结构稳定性提供了方便的途径。CS10d120Hac表现出相对较高的表面积，特别是与大块硅酸钙颗粒相比，这是非常罕见的。该CS10d120Hac可以选择性地与多个有机和无机基团进行功能化。因此，本研究为杂化中空生物活性颗粒的形成开辟了一条新的途径。
Semi-amorphous hollow calcium silicate hydrate nanoparticles (CS10d120Hac) were successfully synthesized via simple ammonia-hydrothermal-template approach (AHT) followed by acid treatment. Results revealed that the newly synthesized samples had homogenous hollow nano-interior wherein the shell wall contained semi-amorphous calcium silicate hydrate. The AHT intensified the formation of a stronger electrostatic interaction (Si–O–Ca) from the weaker electrostatic contact composed of silicate wall-calcium hydroxide interaction (Si–OH–Ca) forming a thin semi-amorphous calcium silicate hydrate shell wall. This is also a convenient way for structural stability of the hollow CS10d120Hac. The CS10d120Hac showed a relatively higher surface area, which is uniquely rare especially if compared with bulk calcium silicate particles. This CS10d120Hac can be selectively functionalized with multiple organic and inorganic groups. Hence, this work may open a new route for the formation of hybrid hollow bio-active particles.