Porous glass-ceramics composed of a titanium phosphate crystal skeleton: A review
Porous glass-ceramics composed of a titanium phosphate crystal skeleton: A review
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由磷酸钛晶体骨架组成的多孔微晶玻璃：综述
DOI：
10.1016/0022-3093(95)00309-6
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发表时间：
1995
影响因子：
3.5
通讯作者：
Y. Abe
中科院分区：
文献类型：
--
作者：
H. Hosono;Y. Abe
采用RTi2(PO4)3（R = Li, Na, 12 Ca）Ca3(PO4)2玻璃控制晶化并进行化学处理，制备了具有两种功能磷酸钛晶体骨架的本体微孔微晶玻璃。一种晶体是具有tio6和po4三维网状结构的nasicon型晶体，另一种晶体是具有二维层状结构的磷酸锆型晶体Ti(HPO4)2·2H2O。平均孔径为30 ~ 60 nm，孔隙率为40 ~ 60 vol.%。多孔CaTi4(PO4)6微晶玻璃作为固定化酶和湿度传感器的载体和多孔liati2 (PO4)3微晶玻璃作为离子交换介质具有优异的性能。部分银交换的多孔li2 (PO4)3和Li1.4Ti1.6Al0.4(PO4)3具有明显的抑菌活性。利用LTP在酸溶液中转化为TP的新发现，合成了具有LiTi2(PO4)3（LTP）和Ti(HPO4)2·2H2O （TP）晶体骨架的集成微孔微陶瓷。
Bulk microporous glass-ceramics with a skeleton of two types of functional titanium phosphate crystal were prepared by controlled crystallization of RTi2(PO4)3(R = Li, Na, 1 2 Ca)Ca3(PO4)2glasses, and chemical treatment. One crystal is a NASICON-type with a three-dimensional network structure of TiO6and PO4while the other is a zirconium phosphate-type crystal Ti(HPO4)2· 2H2O with a two-dimensional layered structure. The mean pore diameter and porosity of 30–60 nm and 40–60 vol.% were achieved. Porous CaTi4(PO4)6glass-ceramics have excellent properties as supports for immobilization of enzymes, humidity sensors and porous LiTi2(PO4)3glass-ceramics as ion exchange media. Conspicuous bacteriostatic activities were found for the partially Ag-exchanged porous LiTi2(PO4)3and Li1.4Ti1.6Al0.4(PO4)3. Integrated microporous glass-ceramics with skeletons of LiTi2(PO4)3(LTP) and Ti(HPO4)2· 2H2O (TP) crystals were synthesized utilizing a novel discovery that LTP is transformed into TP in acid solution.