FTIR, Raman and NMR investigation of CaO-SiO2-P2O5 and CaO-SiO2-TiO2-P2O5 glasses

doi:10.1016/j.jnoncrysol.2015.04.017

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	FTIR, Raman and NMR investigation of CaO-SiO2-P2O5 and CaO-SiO2-TiO2-P2O5 glasses
	Sun, Yongqi ; Zhang, Zuotai ; Liu, Lili ; Wang, Xidong
刊名	非晶性固体杂志
	2015
DOI	10.1016/j.jnoncrysol.2015.04.017
英文摘要	The role of P2O5 on the structure of CaO-SiO2-P2O5 and CaO-SiO2-TiO2-P2O5 glasses was identified using Fourier transformation infrared (FTIR), Raman and Magic Angular Spinning Nuclear Magnetic Resonance (MAS NMR) spectra in this study to provide some fundamental clues for titanium and phosphorus extraction. In both systems, the vibration signals of Q0(Si), Q1(Si), Q2(Si), and Q3(Si) were detected and the dominant structural units associated with P-O groups were isolated Q0(P) and terminal Q1(P) (Qi(Si,P), i represents the number of bridging oxygen per Si or P). The added P2O5 resulted in an increase of Q3(Si) at the cost of Q0(Si), Q1(Si), and Q2(Si) and the degree of polymerization (DOP) of the glasses was therefore increased; additionally, the mole ratio of Q0(P) to Q1(P) decreased with increasing P2O5 content, indicating an equilibrium reaction between Q0(P) and Q1(P). Furthermore, the presence of TiO2 resulted in a more complicated structure in the CaO-SiO2-TiO2-P2O5 glasses and the structural units related to Q0(P), O-Ti-O deformation and TiO44 - monomers were clearly clarified. ? 2015 Elsevier B.V. All rights reserved.; SCI(E); EI; 0; ARTICLE; zuotaizhang@pku.edu.cn; 26-33; 420
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/155258]
专题	工学院
推荐引用方式 GB/T 7714	Sun, Yongqi,Zhang, Zuotai,Liu, Lili,et al. FTIR, Raman and NMR investigation of CaO-SiO2-P2O5 and CaO-SiO2-TiO2-P2O5 glasses[J]. 非晶性固体杂志,2015.
APA	Sun, Yongqi,Zhang, Zuotai,Liu, Lili,&Wang, Xidong.(2015).FTIR, Raman and NMR investigation of CaO-SiO2-P2O5 and CaO-SiO2-TiO2-P2O5 glasses.非晶性固体杂志.
MLA	Sun, Yongqi,et al."FTIR, Raman and NMR investigation of CaO-SiO2-P2O5 and CaO-SiO2-TiO2-P2O5 glasses".非晶性固体杂志 (2015).