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Vibrational Spectral Analysis of Natisite (Na2TiSiO5) and its Structure Evolution in Water and Sulfuric Acid Solutions

文献类型：期刊论文

作者Meng, Fancheng2,3; Liu, Yahui2; Wang, Lina2; Chen, Desheng2; Zhao, Hongxin2; Zhen, Yulan2; Chen, Jing1; Qi, Tao2
刊名MATERIALS
出版日期2021-05-01
卷号14期号:9页码:14
关键词natisite vibration spectroscopy structure evolution sodium ion aqueous solution
DOI10.3390/ma14092259
英文摘要Natisite (Na2TiSiO5) is a layered sodium titanosilicate containing TiO5 square pyramids. The structure evolution of natisite in water and acid solutions is the basis for its potential applications. With Na2SiO3 as the silicon source, natisite with the shape of the square sheet was selectively prepared from the hydrothermal method with 14.3 mol/L NaOH solution at 240 degrees C. Natisite has 20 Raman active modes and 22 infrared active modes from the first-principles calculations within density functional theory, and the calculated Raman and infrared spectra agree well with the experimental ones. The characteristic Raman peak at 844 cm(-1) is caused by the symmetric stretching of the apical Ti-O bond in the TiO5 unit, assigning to A(1g) and B-2g modes. Natisite remains relatively stable in water with a sodium leaching percentage of lower than 6%. When washing with sulfuric acid solutions, the interlayer spacing of natisite is reduced due to the extensive removal of sodium ions, and an intermediate composed of SiO4 and newly formed TiO6 units may be formed. Moreover, after washing with water and acid solutions, 95.5%, 63.4%, and 35.2% of Na, Si, and Ti in natisite can be leached in total, respectively, resulting in the structural disintegration of natisite.
WOS关键词SODIUM TITANIUM SILICATE ; OXIDE INDUSTRY ; TITANOSILICATE ; TIO2 ; 1ST-PRINCIPLES ; PHOTOCATALYST ; RECOVERY ; TIONITE ; RESIDUE ; STATE
资助项目National Natural Science Foundation of China[51804289] ; National Natural Science Foundation of China[22078343] ; National Natural Science Foundation of China[21908231] ; National Key Research and Development Program of China[2018YFC1900500] ; National Key Research and Development Program of China[2018YFE0123100] ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences[QYZDJ-SSW-JSC021] ; CAS Interdisciplinary Innovation Team ; Opening Foundation of State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming Uni-versity of Science and Technology[CNMRCUKF1901] ; Special Project for Transfor-mation of Major Technological Achievements in HeBei province[19044012Z] ; Province Key R&D Program of Hebei[20374105D]
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种英语
出版者MDPI
WOS记录号WOS:000650633400001
资助机构National Natural Science Foundation of China ; National Key Research and Development Program of China ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences ; CAS Interdisciplinary Innovation Team ; Opening Foundation of State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming Uni-versity of Science and Technology ; Special Project for Transfor-mation of Major Technological Achievements in HeBei province ; Province Key R&D Program of Hebei
源URL[http://ir.ipe.ac.cn/handle/122111/48623]  
专题中国科学院过程工程研究所
通讯作者Wang, Lina
作者单位1.Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Yunnan, Peoples R China
推荐引用方式
GB/T 7714		 Meng, Fancheng,Liu, Yahui,Wang, Lina,et al. Vibrational Spectral Analysis of Natisite (Na2TiSiO5) and its Structure Evolution in Water and Sulfuric Acid Solutions[J]. MATERIALS,2021,14(9):14.
APA Meng, Fancheng.,Liu, Yahui.,Wang, Lina.,Chen, Desheng.,Zhao, Hongxin.,...&Qi, Tao.(2021).Vibrational Spectral Analysis of Natisite (Na2TiSiO5) and its Structure Evolution in Water and Sulfuric Acid Solutions.MATERIALS,14(9),14.
MLA Meng, Fancheng,et al."Vibrational Spectral Analysis of Natisite (Na2TiSiO5) and its Structure Evolution in Water and Sulfuric Acid Solutions".MATERIALS 14.9(2021):14.

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来源：过程工程研究所

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