Pore size and pore-size distribution control of porous silica
Pore size and pore-size distribution control of porous silica
复制标题
多孔二氧化硅的孔径和孔径分布控制
DOI：
10.1016/0925-4005(95)85078-3
复制
发表时间：
1995
影响因子：
8.4
通讯作者：
Wang Sasa
中科院分区：
文献类型：
--
作者：
Y. Xi;Zhang Liangying;Wang Sasa
多孔二氧化硅是一种独特的化学传感器基体材料。本文采用溶胶-凝胶法制备了多孔二氧化硅。通过催化剂和制备条件可以控制多孔材料的孔隙率、孔径、孔形状和孔径分布。可以达到高达60 - 70%的孔隙率。孔径可以控制在2 - 100 nm范围内。通过控制pH值，可获得单一窄峰和双分离峰分布。孔的形状可以控制从窄颈和大直径形状到细圆柱形孔。本文还讨论了多孔二氧化硅在化学传感器中的应用。
Porous silica is a unique matrix material for chemical sensors. In this paper, porous silica is prepared via the sol-gel technique. The porosity, pore size, pore shape and pore-size distribution can be controlled by catalysts and preparation conditions. A porosity as high as 60−70% can be reached. The pore size can be controlled in the range 2−100 nm. A single narrow peak and double separate peak distributions can be achieved by controlling the pH values. The pore shape can be controlled from narrow-necked and large-abdomened shapes to fine cylindrical pores. Applications of porous silica for chemical sensors are also discussed in this paper.