Relationship on UV transmission and structure of lithium aluminum silicate-phosphate glasses

Qiaoqiao Cui, Mingye Ding, Yaru Ni, Chunhua Lu

科研成果: 期刊稿件文章同行评审

摘要

Ultraviolet (UV) transparency and local structural environment of alumina-silicate-phosphate glasses in the Li-Al-Si-P system are studied by changing lithium content at expense of P2O5, by UV-vis Recording Spectrophotometer (UVPC), Fourier transform infrared spectroscopy (FT-IR) in company with 29Si, 27Al and 31P magic angle spinning (MAS) nuclear magnetic resonance (NMR). The structure of glasses is changed with the substitution of Li2O for P2O5. According to 29Si and 31P MAS-NMR spectra, silicate and phosphate are all located to the high coordination states, but aluminate appears three coordinate circumstances (four-, five- and six-coordinated). The average of Al coordination numbers decrease with using Li2O to replace P2O5, which indicates that the Al as the modifier becomes the network-former. Meanwhile, the result of FTIR indicates that the bonds of Si-O-Al and P-O-Al are gradually increased. Hence, the bonds formed by Al-O-T(T=Si, P) become the bridging oxygen, improving the UV transmittance simultaneously.

源语言英语
页(从-至)565-570
页数6
期刊Guangxue Jishu/Optical Technique
39
6
出版状态已出版 - 11月 2013

指纹

探究 'Relationship on UV transmission and structure of lithium aluminum silicate-phosphate glasses' 的科研主题。它们共同构成独一无二的指纹。

引用此