Synthesis and Characterisation of Nano crystalline Cerium Nickelate ...

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S.Ignatius Arockiam et al /Int.J. ChemTech Res.2012,4(2) 803 R (%) 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 200 300 400 500 600 700 800 Wavelength (nm) Fig-6 UV-Visible spectrum for CeNiO3 compound SEM analysis The morphological features of the synthesised powders were obtained by means of scanning electron microscopy. Fig-7(a) and 7(b) show the scanning electron micrographs of CeNiO3 compound obtained Fig- 7(a) and 7(b) SEM image of CeNiO3 (a) (b) by Molten Salt Synthesis (MSS) route. The crystals have shown an assorted particle morphology. The average particle size of the powders is ranging between 25-35 μm.
S.Ignatius Arockiam et al /Int.J. ChemTech Res.2012,4(2) 804 Conclusions Fine crystalline CeNiO3 powders are successfully synthesized using low temperature molten salt technique. The XRD analysis confirms that the compound has the cubic structure. FTIR spectrum reveals the Ce-O, Ni-O band positions in CeNiO3 compound. CHNS analysis shows the compound has minor impurities such as carbon, hydrogen and sulphur. From the UV reflectance spectrum, the band References [1] F. Damay, N. Nguyen, A. Maignan, M. Hervieu, B. Raveau,Solid State Commun. 98 (1996) 997. [2] Th. Lagouri, Sp. Dedoussis, M. Chardalas, and A. Liolios, Phys. Lett. A, 229 (1997) 259 [3] Junmo Koo, Jae Hyeok Jang, and Byeong- Soo Bae J. Am. Ceram. Soc.84 (2001) 193. [4] M. Panneerselvam and K. J. Rao J. Mater. Chem. 13 (2003) 596. [5] C. Suddhakar and M. A. Vannice, Appl. Catal., 14, (1985), 47. [6] C.Suddhakar andM. A.Vannice,J.Catal.,95,(1985), 227. [7] M. Mendelovici and M. Steinberg, J. Catal., 96, (1985), 285. [8] C. Padeste, N. W. Cant and D. L. Trimm, Catal. Lett., 18, (1993), 305. [9] H. Diaz, J. P. Marcq, M. Pinabiau and Y. Barbaux, Eur. Pat. 8,508, (1985), 210. [10] M. G. Sanchez and J. L. Gazquez, J. Catal., 104, (1987), 120. [11] H. Wan, Z. Chao, W. Weng, X. Zhou, J. Cai and K. Tsai, Catal.Today, 30, (1996), 67. [12] J. M. Herrmann, C. Hoang-Van, L. Dibansa and R. Hari-vololonola, J. Catal., 159, (1996), 361. [13] C. De Leitenburg, A. Trovarelli, J. Llorca, F. Cavani and G. Bini,Appl. Catal., 139, (1996) 161 [14] S. Bae, K. S. Han and J. H. Adair, J. Mater. Chem., 12, (2002), 3117 [15]R. Alexendrescu, I. Morjan, F. Dumitrache, M. Scarisoreanu, I. Soare, C. Fleaca, R. Birjega, E. Popovici, L. Gavrila, G. Prodan, V. Ciupina, G. Filoti, V. Kuncser and L.Vekas, Int. J. Photoenergy, (2008),11 [16]O. Michitaka and M. Shusaku, Nippon Kagakkai Koen Yokoshu, 83(1), 378 (2008). ***** gap value is determined and found to be eg = 3.18 eV. The EPR spectrum reveals that the value of g factor is g=2. The SEM image reveals that the particles have assorted crystal morphology. The average particle size is found to be 20 - 35 μm. From the above studies, it has been concluded that the fine crystalline cerium nickelate compound can be synthesized by low temperature molten salt technique. [17]. J. Tao, J. Ma, Y. Wang, X. Zhu, J. Liu, X. Jiang, B. Lin and Y. Ren, J. Amer. Cer.Soc., 89(II), (2008),3554 [18] Siegel et al.,United States Patent, No. 5, 128, 081. [19]. Peterson et al., United States Patent No. 6, 580, 051. [20]Y. Mao, T.-J Park, F. Zhang, H. Zhou, S. S. Wong, Small 3 (2007) 1122. [21] K. H Yoon, C. Y. S, D. H. Kang, J. Mater. Sci. 33 (1998) 2977. [22] Yuanbing Mao, Xia Guo, Jian Y. Huang, Kang L. Wang, and Jane P. Chang, J. Phys. Chem.C 113 (2009) 1204. [23] B. L Cushing, V. L Kolesnichenko, C.O’Connor, J. Chem. Rev. 104 (2004) 3893. [24] Jansen,M.Angew. Chem., Int. Ed. 41 (2002) 3746. [25] X Weng, P. Boldrin, I. Abrahams, S. J Skinner, Darr, J. A.Chem. Mater. 19 (2007) 4382. [26] M. Helan,L.John Berchmans, journal of rare earths, 28 (2010) 255 [27]M. Helan, L. J. Berchmans, V. S. Syamala Kumari, R. RaviSankar and V. M.Shanmugam Materials Research Innovations 15, 2(2011)130 [28] M. Helan, L. John Berchmans, Timy P. Joseb, A.Visuvasam, S. Angappan Materials Chemistry and Physics 124 (2010) 439–442 [29]S.Ignatius Arockiam, L. John Berchmans, S.Angappan, A. Visuvasam,V. Mani Materials Science Forum 699 (2012) 67-78 [30] Z-R Silva, J.D.G Fernandes, D.M.A. Melo, C. Alves, Jr. E.R. Leite, C.A. Paskocimas, E.Longo, M.I.B. Bernardi, Mater. lett. 56 (2002) 232. [31]J.D.G. Fernandes, D.M.A. Melo, L.B. Zinner, C.M. Salustiano, Z.R. Silva, A.E. Martinelli,M. Cerqueira, C. Alves Ju´nior, E. Longo, M.I. B.Bernardi, Mater. Lett. 53 (2002) 122
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