TY - JOUR
T1 - Relationship on UV transmission and structure of lithium aluminum silicate-phosphate glasses
AU - Cui, Qiaoqiao
AU - Ding, Mingye
AU - Ni, Yaru
AU - Lu, Chunhua
PY - 2013/11
Y1 - 2013/11
N2 - 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.
AB - 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.
KW - Glass structure
KW - Infrared spectroscopy
KW - Nuclear magnetic resonance
KW - Ultraviolet transmittances
UR - http://www.scopus.com/inward/record.url?scp=84890338105&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:84890338105
SN - 1002-1582
VL - 39
SP - 565
EP - 570
JO - Guangxue Jishu/Optical Technique
JF - Guangxue Jishu/Optical Technique
IS - 6
ER -