Bismuth Pyromangenate: Hydrothermal and Solid State Synthesis, Characterization and Optical Properties

محورهای موضوعی : Materials synthesis and charachterization

Mahdi Behzad ¹ (Department of Chemistry, Semnan University, Semnan, Iran.)
Shahin khademinia ² (Department of Chemistry, Semnan University, Semnan, Iran.)

تاریخ دریافت : 1393/07/05 تاریخ پذیرش : 1393/09/14 تاریخ انتشار : 1393/12/10

کلید واژه: Hydrothermal method, Solid state, PXRD, Bi2Mn2O7, nano materials,

چکیده مقاله :

Bi2Mn2O7 nano-powders were synthesized via a stoichiometric 1:1 Bi:Mn molar ratio hydrothermal method at 180 °C for 48 h in a 1M NaOH aqueous solution; and solid state method, using Bi(NO3)3.5H2O and MnO2 as raw materials. The synthesized materials were characterized by powder X-ray diffraction (PXRD) technique. Also, the rietveld analysis was done in FullProf in profile matching mode. It was found that Bi2Mn2O7 crystallizes in a cubic crystal structure with space groupFd3 ̄m. The size and morphologies of the synthesized materials were studied by transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM) techniques, respectively. The FESEM images showed that the synthesized Bi2Mn2O7 has rod like structure in hydrothermal method and a mixture of rod and particle structures in solid state method. Also, BET-BJH analysis investigated for determination of pore size, pore volume, average particle size, pore width and surface area of the obtained materials. Also, photoluminescence spectra of the obtained materials were studied.

منابع و مأخذ:

 

1. N. Sharma, G. V. SubbaRao, B. V. R. Chowdhuri, “Anodic properties of tin oxides with pyrochlore structure for lithium ion batteries”, J. Power Sources., Vol. 159, 2006, pp. 340–344.


2. B. P. Mandal, N. Garg, S. M. Sharma, A. K. Tyagi, “Preparation, XRD and Raman spectroscopic studies on new compounds Re₂Hf₂O₇ (RE=Dy, Ho, Er, Tm, Lu, Y): Pyrochlores or defect-fluorite?”, J. Solid State Chem., Vol. 179, 2006, pp. 1990–1994.


3. K. Li, T. Zhang, H. Wang, H. Yan, “Low-temperature synthesis and structure characterization of the serials Y_2-δBi_δSn₂O₇ ( ) nanocrystals:, J. Solid State Chem., Vol. 179, 2006, pp. 1029–1034.


4. H. L. Zhu, D. R. Yang, L. M. Zhu, D. S. Li, P. H. Chen, G. X. Yu, “Hydrothermal Synthesis and Photoluminescence Properties of La_2−xEu_xSn₂O₇ (x=0–2.0) Nanocrystals”, J. Am. Ceram.Soc., Vol. 90, 2007, pp. 3095–3098.


5. K. E. Sickafus, L. Minervini, R. W. Grimes, J. A. Valdez, M. Ishimaru, F. Li, K. J. McClellan, T. Hartmann, “Radiation tolerance of complex oxides”, Science., Vol. 289, 2000, pp. 748–751.


6. M. Sellami, V. Caignaert, M. Hamdad, A. Belarbi, I. Sari-Mohamed, A. Bahmani, N. Bettahar, “Synthesis and characterization of the new pyrochlore Bi_1.5Sb_1.5-xNb_xMnO₇ solid solution”, C. R. Chimie., Vol. 14, 2011,
   pp. 887–890.


7. A. H. Shaari, W. M. Daud, W. Yusoff, M. Hashim, Z. A. Talib, L. K. Pah, T. B. Ping, “sample preparation and dielectric spectrum equivalent circuits modeling for Bi₂Mn₂O₇”, Solid State Science and Technology., Vol. 15, 2007, pp. 223-228.


8. K. koga, T. Momai, M. Matsunaga, “composition and properties of pyrochlore-type oxides for air electrode in secondary cells”, ECS Transactions., Vol. 11(3), 2008, pp.101-104.


9. MA. Subramanian, G. Aravamudan, S. Rao, Prog. Solid State Chem, 15 (1983) 55.


10. K. Ozawa, “Lithium Ion Rechargeable Batteries: Materials, Technology, and New Applications”, John Wiley & Sons. Section 3.


11. M. Sellami, V. Caignaert, M. Hamdad, A. Bekka, N. Bettahar, “Synthesis and characterization of new pyrochlore solid solution Bi_1.5Sb_1.5Cu_1−xMn_xO₇”, J. Alloys and Compounds., Vo. 482, 2009, pp. 13–18.


12. F. W. Bezerra Lopes, C. P. de Souza, A. M. V. de Morais, J. P. Dallas, J. R. Gavarri, “Determination of RE₂Ce₂O₇pyrochlore phases from monazite–allanite ores”, Hydrometallurgy, Vol. 97, 2009, pp. 167–172.


13. Z. Hong-song, W. Yuan, L. Gang, C. Xiao-ge, W. Xin-Li, “Investigation about thermal conductivities of La₂Ce₂O₇ doped with calcium or magnesium for thermal barrier coatings”, J. Alloys and Compounds., Vol. 537, 2012,
    pp. 141–146.


14. J. In, I. Yoon, K. Seo, J. Park, J. Choo, Y. Lee, B. Kim, “Polymorph-Tuned Synthesis of α – an β -Bi₂O₃ Nanowires and Determinationof Their Growth Direction from Polarized Raman Single Nanowire Microscopy”, Chem. Eur., J. Vo. 17, 2011, pp. 1304–1309.


15. C. Jin, H. Kim, K. Baek, H. W. Kim, C. Lee, “Structure and Photoluminescence Properties of Bi2O3/ZnO Coaxial Nanorods”, Journal of the Korean Physical Society, Vol. 57, No. 6, 2010, pp. 1634-1638.

16. Y. Zhydachevskii, D. Galanciak, S. Kobyakov, M. Berkowski, A. Kamińska, A. Suchocki, Y. Zakharko,  A. Durygin, “Photoluminescence studies of Mn⁴⁺ ions in YAlO₃ crystals at ambient and high pressure”, Journal of Physics: Condensed Matter Volume 18 Number 49, 2006, pp. 11385–11396.