Q.-L. Huang et al. / Journal of Alloys and Compounds 509 (2011) 6382–6387
6387
Funds, and the Natural Science Foundation of Jiangsu Province (no.
08KJB150019).
References
[1] L.J. Liu, W.D. Xiang, J.S. Zhong, X.Y. Yang, X.J. Liang, H.T. Liu, W. Cai, J. Alloys
Compd. 493 (2010) 309–313.
[2] J.H. Jiang, G.H. Gao, R.N. Yu, G.Z. Qiu, X.H. Liu, Solid State Sci. 13 (2011) 356–360.
[3] Q.F. Han, M.J. Wang, J.W. Zhu, X.D. Wu, L.D. Lu, X. Wang, J. Alloys Compd. 509
(2011) 2180–2185.
[4] J.T. Zai, K.X. Wang, Y.Z. Su, X.F. Qian, J.S. Chen, J. Power Sources 196 (2011)
3650–3654.
[5] L.J. Yao, M.J. Zheng, S.H. He, L. Ma, M. Li, W.Z. Shen, Appl. Surf. Sci. 257 (2011)
2955–2959.
[6] M. Xue, X.H. Zhang, X. Wang, B. Tang, Mater. Lett. 64 (2010) 1357–1360.
[7] C.J. Tang, C.Q. Wang, F.J. Su, C.H. Zang, Y.X. Yang, Z.J. Zong, Y.S. Zhang, Solid State
Sci. 12 (2010) 1352–1356.
[8] M. Salavati-Niasari, A. Sobhani, F. Davar, J. Alloys Compd. 507 (2010) 77–83.
[9] M. Salavati-Niasari, D. ghanbari, F. Davar, J. Alloys Compd. 492 (2010) 570–575.
[10] F. Li, J.F. Wu, Q.H. Qin, Z. Li, X.T. Huang, Powder Technol. 198 (2010) 267–274.
[11] J. Liu, D.F. Xue, Mater. Res. Bull. 45 (2010) 309–313.
[12] Z.G. Cheng, S.Z. Wang, D.J. Si, B.Y. Geng, J. Alloys Compd. 492 (2010) L44–49.
[13] R. Chen, Z.R. Shen, H. Wang, H.J. Zhou, Y.P. Liu, D.T. Ding, T.H. Chen, J. Alloys
Compd. 509 (2011) 2569–2588.
[14] J.X. Liu, X.L. Dong, X.W. Liu, F. Shi, S. Yin, T. Sato, J. Alloys Compd. 509 (2011)
1482–1488.
[15] Y. Tian, G.M. Hua, W. Xu, N. Li, M. Fang, L.D. Zhang, J. Alloys Compd. 509 (2011)
Fig. 8. UV–vis spectrum of the as-prepared CuS 3D microspheres.
pose completely and well-defined 3D CuS nanostructures were
formed via Ostwald ripening [36]. This process is similar to the for-
mation process of the flower-like PbS nanostructures synthesized
by Salavati-Niasari [8].
The free carrier absorption and high reflection at wavelengths
above 700 nm and the onset of band to band absorption at
shows the UV–vis spectrum of the as-synthesized CuS 3D micro-
spheres. It exhibited an absorption minimum centered at around
672 nm, which was consistent with the reports by Nair et al.
[37,38].
[16] A.E. Raevskaya, A.L. Stroyuk, S.Y. Kuchmii, A.I. Kryukov, J. Mol. Catal. A: Chem.
212 (2004) 259–265.
[17] S.T. Lakshmikvmar, Sol. Energy Mater. Sol. Cell 32 (1994) 7–19.
[18] J.S. Chung, H.J. Sohn, J. Power Sources 108 (2002) 226–231.
[19] T. Thongtem, A. Phuruangrat, S. Thongtem, Mater. Lett. 64 (2010) 136–139.
[20] J.F. Mao, Q. Shu, Y.Q. Wen, H.Y. Yuan, D. Xiao, M.M.F. Choi, Cryst. Growth Des.
9 (2009) 2546–2548.
[21] Y.C. Zhang, T. Qiao, X.Y. Hu, W.D. Zhou, Mater. Res. Bull. 40 (2005) 1696–1704.
[22] C.F. Mu, Q.Z. Yao, X.F. Qu, G.T. Zhou, M.L. Li, S.Q. Fu, Colloids Surf., A: Physic-
ochem. Eng. Aspects 371 (2010) 14–21.
[23] L. Zhu, Y. Xie, X.J. Zheng, J. Cryst. Growth 260 (2004) 494–499.
[24] J. Zhang, Z.K. Zhang, Mater. Lett. 62 (2008) 2279–2281.
[25] P. Roy, K. Mondal, S.K. Srivastava, Cryst. Growth Des. 8 (2008) 1530–1534.
[26] A. Ghahremaninezhad, E. Asselin, D.G. Dixon, Electrochem. Commun. 13 (2011)
12–15.
[27] H.T. Zhu, J.X. Wang, D.X. Wu, Inorg. Chem. 48 (2009) 7099–7104.
[28] M.M. Li, S.Q. Wu, J.L. Shi, J. Alloys Compd. 489 (2010) 343–347.
[29] J.G. Dunn, C. Muzend, Thermochim. Acta 369 (2001) 117–123.
[30] P. Bombicz, I. Mutikainen, M. Krunks, T. Leskela, J. Madarasz, L. Niinisto, Inorg.
Chim Acta 357 (2004) 513–525.
[31] V. Hayez, J. Guillaume, A. Hubin, H. Terryn, J. Raman Spectrosc. 35 (2004)
732–738.
[32] M. Bouchard, D.C. Smith, Spectrochim. Acta A 59 (2003) 2247–2266.
[33] B.C. Dave, J.P. Germanas, R.S. Czernuszewicz, J. Am. Chem. Soc. 115 (1993)
12175–12176.
[34] B. Minceva-Sukarova, M. Najdoski, I. Grozdanov, C.J. Chunnilall, J Mol. Struct.
410–411 (1997) 267–270.
[35] R.C. Bott, G.A. Bowmaker, C.A. Davis, G.A. Hope, B.E. Jones, Inorg. Chem. 37
(1998) 651–657.
4. Conclusions
CuS 3D microspheres were synthesized directly from
the
hydrothermal
reactions
of
suitable
amounts
of
Cu(NO3)2·3H2O, NH4F and (NH2)2CS at 120 ◦C for 6 h. Based
on the variation of microstructures of the products with
the synthesis conditions including reaction time, reac-
tion temperature and amount of (NH2)2CS, etc.,
a plausible
“complexation––decomposition––aggregation” mechanism has
been proposed. Besides, the optical absorption property and
thermal stability of the as-synthesized CuS 3D microspheres were
also presented.
[36] F.Z. Mou, J.G. Guan, Z.G. Sun, X.A. Fan, G.X. Tong, J. Solid State Chem. 183 (2010)
736–743.
Acknowledgements
[37] P.K. Nair, V.M. Garcia, A.M. Ferndndez, H.S. Ruiz, M.T.S. Nair, J. Phys. D. Appl.
Phys. 24 (1991) 441–449.
[38] M.T.S. Nair, P.K. Nair, Semicond. Sci. Technol. 4 (1989) 191–199.
Thanks to the China Postdoctoral Science Foundation funded
project, the Jiangsu Planned Projects for Postdoctoral Research