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Preparation of Layered K2Pr2Ti3O10 by Stearic Acid Method and Its Acid-exchanging Property

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2008年02期
Page:
248-251
Research Field:
Publishing date:

Info

Title:
Preparation of Layered K2Pr2Ti3O10 by Stearic Acid Method and Its Acid-exchanging Property
Author(s):
ZHU Jun-wuZHANG Li-liWU Ji-keYANG Xu-jieLU Lu-deWANG Xin
School of Chemical Engineering,NUST,Nanjing 210094,China
Keywords:
K2Pr2Ti3O10 preparation stearic acid method acid-exchanging
PACS:
O611.6
DOI:
-
Abstract:
Layered K2Pr2Ti3O10 is prepared by stearic acid method at lower temperature,and its acid-exchanging process is investigated.The samples are characterized by X-ray diffraction(XRD),transmission electron microscopy(TEM),UV-Visible absorption spectroscopy and Laser Raman spectra(LRS).The results show that the layered K2Pr2Ti3O10 with size of 100~200 nm and interlayer spacing of 1.477 nm can be obtained from this procedure by calcining precursor at 800 ℃ for 6 h.The layered structure is retained but the interlayer spacing becomes shorter after acid-exchanging by HNO3.The UV-Vis spectra indicate that K2Pr2Ti3O10 and H2Pr2Ti3O10 have obvious absorption at UV region,and the absorption peak of H2Pr2Ti3O10 shifts to high wavelength.

References:

[1] LiW, ZhuoM W, Sh i J L. Syn thesizing nano LaA lO3 powders v ia co??precipitation m ethod [ J] . M ater Lett, 2004, 58 ( 3- 4) : 365- 368.
[2] Zhu Y F, Tan R Q, Y i T, et a.l Prepara tion o f nanos?? ized LaCoO3 pe rovsk ite ox ide using amo rphous heteron?? uc lea r comp lex as a precursor at low tem pera ture [ J]. JM a ter Sc,i 2000, 35 ( 21): 5 415- 5 420.
[3] 杨秋华, 傅希贤. 纳米LaMO3 (M = C r, M n, Fe, Co) 化合物的光催化氧化活性分析[ J]. 硅酸盐学报, 2003, 31( 3): 254- 261.
[4] Chen C H, K ru idhofH, Bouwm eeste r JM, e t a .l Ion?? ic conductiv ity o f perovskite LaCoO3 m easured by oxy?? gen perm eation technique [ J]. J Appl E lectro chem, 1997, 27 ( 1): 71- 75.
[5] Byeon S H, Nam H J. N eutron d iffraction and FT??Ra?? m an study o f ion??ex changeable layered titana tes and n ioba tes [ J]. Chem M ater, 2000, 12: 1 771- 1 778.
[6] Schaak R E, M a llouk T E. Pry ing apart rudd lesden?? poppe r phases: ex fo lia tion into sheets and nanotubes for assemb ly of perovskite th in film s [ J] . Chem M a?? ter, 2000, 12: 3 427- 3 434.
[7] 张莉莉, 张维光, 杨娟, 等. 固相反应法制备系列 K2La2 T i3O10 [ J]. 材料科学与工程学报, 2005, 23 ( 2) : 181- 184.
[8] 陈亚芍, 侯文华, 颜其洁. 氧化铝柱层状镧钛酸盐的 制备[ J]. 无机化学学报, 1995, 11( 4): 399- 403.
[9] 张莉莉, 杨娟, 张维光, 等. 硬脂酸法制备超细 K2 La2T i3O10及其酸交换性质研究[ J]. 无机化学学 报, 2003, 19( 11) : 1 217- 1 221.
[10] 张莉莉, 刘冠鹏, 张维光, 等. 超细层状材料 A2La2 T i3O10 ( A= Na, K )的低温合成及表征[ J]. 无 机化学学报, 2005, 21( 7): 1 093- 1 097.
[11] Zhang L L, ZhangW G, Zhu JW, et a.l Rapid syn?? thes is of ultra fine K2 Ln2T i3O10 ( Ln= La, Nd, Sm, Gd, Dy ) ser ies and its photoactiv ity [ J] . J So lid Sta te Chem, 2005, 178: 761- 768.
[12] 李伟, 张莉莉, 杨绪杰, 等. 微乳液法制备超细 K2 Ln2 T i3O10及其光催化活性研究[ J]. 中国稀土学 报, 2006, 24( 5): 571- 575.
[13] No zak R, Kondo J N, H irose C, et a .l V ib rationa l study o f layered perovskitesM 2La2 Ti3O10 (M = L ,i Na, K, Rb ): Ram an spec tra and no rm al mode ana lys is [ J] . J Phys Chem B, 2001, 105: 7 950- 7 953.
[14] Byeon S H, Nam H J. N eutron d iffraction and FT??Ra?? m an study o f ion??ex changeable layered titana tes and n ioba tes [ J]. Chem M ate r, 2000, 12: 1 771- 1 778.
[15] Byeon S H, Lee S O, K im H D. Struc ture and Ram an spectra o f layered titanium ox ides [ J]. J So lid Sta te Chem, 1997, 130: 110- 116.

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Last Update: 2008-04-30