Phase Characterizations and Photocatalytic Applications of CuO–K2Mo4O13 Composites

doi:10.1007/s40195-014-0030-x

摘要/Abstract

Abstract:

A series of CuO–K₂Mo₄O₁₃ composite materials have been prepared by mixing appropriates quantities, in solid state, of CuO and pure K₂Mo₄O₁₃ according to the molar ratios CuO/K₂Mo₄O₁₃ = 0.05, 0.1, 0.2, 0.5, and 1. The prepared samples were characterized using techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), differential thermal analysis (DTA), nitrogen adsorption measurements, and UV spectroscopy. According to XRD results, the phase composition of the CuO–K₂Mo₄O₁₃ systems has significantly changed by increasing the molar ratio CuO/K₂Mo₄O₁₃ where new phases, identified as K₂Mo₃O₁₀ and CuMoO₄, have been detected. The formation of these new phases has been tracked through FT-IR and DTA measurements. The nitrogen adsorption–desorption measurements also reveal a change in the pore type of the studied materials due to the presence of these new phases. The photocatalytic activities of K₂Mo₄O₁₃ and CuO–K₂Mo₄O₁₃ composites were studied by means of monitoring the ability of these materials to the degradation, under UV irradiation, of methyl red in liquid media. It was found that the phase composition of the used samples significantly controls their photocatalytic activities.

Key words: Potassium tetramolybdate, Copper oxide, Composite, Photocatalyst

. [J]. 金属学报英文版, 2014, 27(1): 180-184.

M. Kassem. Phase Characterizations and Photocatalytic Applications of CuO–K₂Mo₄O₁₃ Composites[J]. Acta Metallurgica Sinica (English Letters), 2014, 27(1): 180-184.

图/表 7

Fig. 1 X-ray diffraction patterns of the as-synthesized K2Mo4O13a K2Mo4O13 mixed with CuO in different molar ratios of 0.05 b, 0.1 c, 0.2 d, 0.5 e, and 1 f

Table 1 The molar ratio of CuO/K2Mo4O13 and the quantitative analysis of XRD for all phases in equilibrium

Molar ratio of CuO/K₂Mo₄O₁₃	Phase composition
0	100% K₂Mo₄O₁₃
0.05	100% K₂Mo₄O₁₃
0.1	97% K₂Mo₄O₁₃ + 3% K₂Mo₃O₁₀
0.2	75% K₂Mo₄O₁₃ + 25% K₂Mo₃O₁₀
0.5	30% K₂Mo₄O₁₃ + 70% K₂Mo₃O₁₀
1	89% K₂Mo₃O₁₀ + 11% CuMoO₄

Fig. 2 FT-IR spectra of the as-synthesized K2Mo4O13a and K2Mo4O13 mixed with CuO in different molar ratios of 0.05 b, 0.1 c, 0.2 d, 0.5 e, 1 f

Fig. 3 DTA curves of the as-synthesized K2Mo4O13a and K2Mo4O13 mixed with CuO in different molar ratios of 0.05 b, 0.1 c, 0.2 d, 0.5 e, 1 f

Fig. 4 Nitrogen adsorption–desorption isotherms of the as-synthesized K2Mo4O13a and K2Mo4O13 mixed with CuO in different molar ratios of 0.05 b, 0.1 c, 0.2 d, 0.5 e, 1 f

Fig. 5 Pore size distributions of the as-synthesized K2Mo4O13a and K2Mo4O13 mixed with CuO in different molar ratios of 0.05 b, 0.1 c, 0.2 d, 0.5 e, 1 f

Fig. 6 Photocatalytic degradation rate of methyl red on the as-synthesized K2Mo4O13a and K2Mo4O13 mixed with CuO in different molar ratios of 0.05 b, 0.1 c, 0.2 d, 0.5 e, 1 f

参考文献 37

[1]	H. Gnaser, B. Hubert, C. Ziegler,in Encyclopedia of Nanoscience and Nanotechnology, vol. 6, ed. by H.S. Nalwa(American Scientific Publishers, Valencia, 2004), pp. 505–535
[2]	H.C. Lee, H. Jung, J.M. Oh, J.H. Choy, Bull. Korean Chem. Soc. 33, 477(2002)
[3]	M.M. Cheng, W.J. Song, W.H. Ma, C.C. Chen, J.C. Zhao, J. Lim, H.Y. Zhu, Appl. Catal. B 77, 355(2008)10.1016/j.apcatb.2007.08.006
[4]	H.G. Kim, D.W. Hwang, J. Kim, Y.G. Kim, J.J. Lee, Chem. Commun. 12, 1077(1999)10.1039/a902892g
[5]	T. Takata, A. Tanaka, M. Hara, J.N. Kondo, K. Domen,in Studies in Surface Science and Catalysis, vol. 130, ed. by M. Misono (Elsevier, Amsterdam, 2000), p. 1943
[6]	Y.A. Shaban, S.U.M. Khan, Int. J. Nanotechnol. 7, 69(2010)10.1504/IJNT.2010.029549
[7]	J.H. Choy, H.C. Lee, H. Jung, H. Kim, H. Boo, Chem. Mater. 14, 2486(2002)10.1021/cm010815m
[8]	S. Kansal, M. Singh, D.J. Sud, Hazarous Mater. 141, 581(2007)10.1016/j.jhazmat.2006.07.035
[9]	W. Qu, F. Chen, B. Zhao, J. Zhang, J. Phys. Chem. Solid 71, 35(2010)10.1016/j.jpcs.2009.10.005
[10]	G. Zhao, Y. Hu, X. Ding, J. Zhao, J. Xie, J. Solid State Chem. 181, 2133(2008)10.1016/j.jssc.2008.04.035
[11]	A. Zaleska, Recent Pat. Eng. 2, 157(2008)10.2174/187221208786306289
[12]	H.L. Xia, S.H. Zhuang, T. Zhang, D.C. Xiao, J. Environ. Sci. 19, 1141(2007)10.1016/S1001-0742(07)60186-7
[13]	A.V. Rupa, D. Manikandan, D. Divaker, T. Sivakumar, J. Hazardous Mater. 147, 906(2007)10.1016/j.jhazmat.2007.01.107
[14]	P. Bansal, N. Bhullar, D. Sud, Desalination Water Treat. 12, 108(2009)10.5004/dwt.2009.944
[15]	G. Zhang, X. Zou, J. Gon, F. He, H. Zhang, S. Ouyang, H. Liu, Q. Zhang, Y. Liu, X. Yang, B. Hu, J. Mol. Catal. A 255, 109(2006)10.1016/j.molcata.2006.03.073
[16]	W.N.H. Slamet, P. Ezza, R. Kapti, G. Jarnuzi, World Appl. Sci. J. 6, 112(2009)
[17]	M.S. Hegde, K. Nagaveni, S. Roy, PRAMANA. J. Phys. 65, 641(2005)
[18]	S.J. Li, Z. Ma, L. Wang, J. Liu, Sci. China, Ser. B 51, 179(2008)10.1007/s11426-007-0100-2
[19]	L. Korosi, I. Dekany, Colloids Surf. A 280, 146(2006)10.1016/j.colsurfa.2006.01.052
[20]	H. Li, X. Duan, G. Liu, L. Li, Mater. Res. Bull. 43, 1971(2008)10.1016/j.materresbull.2007.10.005
[21]	K. Eda, K. Chin, N. Sotani, M.S. Whittingham, J. Solid State Chem. 177, 916(2004)10.1016/j.jssc.2003.09.029
[22]	K. Eda, Y. Ohshiro, N. Nagai, N. Sotani, M.S. Whittingham, J. Solid State Chem. 182, 55(2009)10.1016/j.jssc.2008.10.001
[23]	Stoe Win Xpow 32,Stoe and Cie GmbH, Darmstadt, Germany (2008)
[24]	S. Kenneth, Colloids Surf. A 187, 3(2001)
[25]	J.C. Groen, L.A.A. Peffer, J.P. Ramirez, Microporous Mesoporous Mater. 60, 1(2003)10.1016/S1387-1811(03)00339-1
[26]	Joint Committee on Powder Diffraction Standards, JCPDS-PDF Card No. 37-1467 (2004)
[27]	M. Selebory, Acta Chem. Scand. 20, 2195(1966)10.3891/acta.chem.scand.20-2195
[28]	Joint Committee on Powder Diffraction Standards, JCPDS-PDF Card No. 27–416 (2004)
[29]	A. Martinez-de la Cruze, L.G. Castillo Torres, Ceram. Int. 34, 1779(2008)10.1016/j.ceramint.2007.07.001
[30]	Joint Committee on Powder Diffraction Standards, JCPDS-PDF Card No. 70–5393 (2004)
[31]	K.J. Wahl, L.E. Seitzman, R.N. Bolster, I.L. Singer, Surf. Coat. Technol. 89, 245(1997)10.1016/S0257-8972(96)02900-3
[32]	B. Chae, Y.M. Jung, X. Wu, S.B. Kim, J. Raman Spectrosc. 34, 451(2003)10.1002/jrs.1019
[33]	H.A. Silim, Egypt. J. Solid 28, 15(2003)
[34]	M.M. Velichkova, R. Iordanova, Process. Appl. Ceram. 3, 181(2009)10.2298/PAC0904181M
[35]	K.Y.S. Ng, E. Gular, J. Catal. 92, 340(1985)10.1016/0021-9517(85)90268-4
[36]	K.S.W. Sing, D.H. Everett, R.A.W. Haul, L. Moscou, R.A. Pierotti, J. Rouquerol, T. Sieminiewska, Pure Appl. Chem. 57, 603(1985)10.1351/pac198557040603
[37]	S. Storck, H. Bretinger, W.F. Maier, Appl. Catal. A 174, 137(1998)10.1016/S0926-860X(98)00164-1

Phase Characterizations and Photocatalytic Applications of CuO–K₂Mo₄O₁₃ Composites

RichHTML

可视化

摘要/Abstract

引用本文

使用本文

图/表 7

参考文献 37

相关文章 0

编辑推荐

Metrics

本文评价