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In-situ high temperature Raman spectroscopic study on the structural evolution of Na2W2O7 from the crystalline to molten states

文献类型：期刊论文

作者Wang, J.1,2,3; You, J. L.1,2,3; Sobol, A. A.4; Lu, L. M.5; Wang, M.1,2,3; Wu, J.1,2,3; Lv, X. M.1,2,3; Wan, S. M.6
刊名JOURNAL OF RAMAN SPECTROSCOPY
出版日期2017-02-01
卷号48期号:2页码:298-304
关键词Ditungstate Structural Evolution Molten State Dft
DOI10.1002/jrs.5036
文献子类Article
英文摘要In order to optimize the growth conditions for tungstate crystals, the structural evolution of ditungstate Na2W2O7 from the crystalline to molten states during heating has been investigated by in-situ high temperature Raman spectroscopic technique. The experimental temperature-dependent Raman spectra showed that Na2W2O7 crystal has not undergone any solid-state phase transformations during heating process from 298 to 1013K. In contrast to crystalline Na2W2O7, in which [WO4] tetrahedra and [WO6] octahedra coexist, the tungsten-oxygen groups in molten Na2W2O7 have the form of (W2O7)(2-) anion composed of two [WO4] by sharing their corner oxygen atoms. To validate the structural evolution of Na2W2O7 above, Raman activity of vibrations of Na2W2O7 crystal and its melt were calculated using density functional theory (DFT) and compared with the in-situ Raman spectra of Na2W2O7. A non-crystalline phase and an intermediate state of Na2W2O7 were obtained by rapid quenching and relatively slow cooling of the homogeneous melt, respectively. Copyright (c) 2016 John Wiley & Sons, Ltd.
WOS关键词PHASE-TRANSFORMATIONS ; TUNGSTATES ; SPECTRA ; NA2WO4 ; DITUNGSTATE ; SILICATES ; NA2MOO4 ; CASTEP ; GROWTH
WOS研究方向Spectroscopy
语种英语
WOS记录号WOS:000394708700021
资助机构State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; 40973046) ; 40973046) ; 40973046) ; 40973046) ; 40973046) ; 40973046) ; 40973046) ; 40973046) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; State Key Program of National Natural Science Foundation of China(50932005) ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; National Natural Science Foundation of China(20973107 ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; Shanghai Committee of Science and Technology Fund, China(12520709200) ; 40973046) ; 40973046) ; 40973046) ; 40973046) ; 40973046) ; 40973046) ; 40973046) ; 40973046)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/31801]  
专题合肥物质科学研究院_中科院安徽光学精密机械研究所
作者单位1.Shanghai Univ, State Key Lab Adv Special Steel, Shanghai 200072, Peoples R China
2.Shanghai Univ, Shanghai Key Lab Adv Ferromet, Shanghai 200072, Peoples R China
3.Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China
4.Russian Acad Sci, Prokhorov Gen Phys Inst, Ulitsa Vavilova 38, Moscow 119991, Russia
5.CSIRO Mineral Resources, Technol Court, Pullenvale, Qld 4069, Australia
6.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Anhui Key Lab Photon Devices & Mat, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Wang, J.,You, J. L.,Sobol, A. A.,et al. In-situ high temperature Raman spectroscopic study on the structural evolution of Na2W2O7 from the crystalline to molten states[J]. JOURNAL OF RAMAN SPECTROSCOPY,2017,48(2):298-304.
APA Wang, J..,You, J. L..,Sobol, A. A..,Lu, L. M..,Wang, M..,...&Wan, S. M..(2017).In-situ high temperature Raman spectroscopic study on the structural evolution of Na2W2O7 from the crystalline to molten states.JOURNAL OF RAMAN SPECTROSCOPY,48(2),298-304.
MLA Wang, J.,et al."In-situ high temperature Raman spectroscopic study on the structural evolution of Na2W2O7 from the crystalline to molten states".JOURNAL OF RAMAN SPECTROSCOPY 48.2(2017):298-304.

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来源：合肥物质科学研究院

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