تعداد نشریات | 31 |
تعداد شمارهها | 748 |
تعداد مقالات | 7,108 |
تعداد مشاهده مقاله | 10,240,426 |
تعداد دریافت فایل اصل مقاله | 6,898,023 |
Facile Synthesis and Spectroscopic Studies of SiO2-Core/ZnS-Shell Nanostructure | ||
Chemistry of Solid Materials | ||
مقاله 3، دوره 2، شماره 2، شهریور 2017، صفحه 25-31 اصل مقاله (1.85 M) | ||
نوع مقاله: Research Paper | ||
نویسندگان | ||
M. Kazemipour؛ Afshin Pourahmad* | ||
Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran | ||
چکیده | ||
SiO2/ZnS core/shell nanostructures have been synthesized at room temperature by a simple wet chemical method. The prepared materials are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), infrared spectroscopy (IR), UV–vis spectroscopic and transmission electron microscopy (TEM) studies. X-ray diffraction pattern exhibits peaks correspond to the cubic phase of ZnS. The morphological studies revealed the uniformity in size distribution with core size of 250 nm and shell thickness of 14 nm. From UV–Vis spectra the band gap energies are calculated. The band gap of ZnS has been determined as 3.70 eV directly from the absorption maximum of ZnS, λmax = 335 nm. The band gap of the bulk ZnS is 3.54 eV. | ||
کلیدواژهها | ||
Nanostructured materials؛ Chemical synthesis؛ Optical properties؛ Transmission electron microscopy (TEM)؛ X-ray diffraction | ||
مراجع | ||
[1] Z. Yang, Y. Lu, Z. Yang, Chem. Commun. 0, 2270 (2009).
[2] A. Pourahmad, Superlattice. Microst. 52, 276 (2012).
[3] Y. Zhu, T. Mei, Y. Wang, Y. Qian, J. Mater. Chem. 21, 11457 (2011).
[4] J.-S. Hu, L.-L. Ren, Y.-G. Guo, H.-P. Liang, A.-M. Cao, L.-J. Wan, C.-L. Bai, Angew. Chem. Int. Ed. 44, 1269 (2005).
[5] M. D. Pre, I. Morrow, D. J. Martin, M. Mos, A. Del Negro, S. Padovani, A. Martucci, Mater. Chem. Phys. 139, 531 (2013).
[6] A. Le Donne, S. K. Jana, S. Banerjee, S. Basu, S. Binetti, J. Appl. Phys. 113, 014903 (2013).
[7] Z. N. Yu, J. Leng, W. Xue, T. Zhang, Y. R. Jiang, J. Zhang, D. P. Zhang, Appl. Surf. Sci. 258 2270 (2012).
[8] D. G. Chen, F. Huang, G. Q. Ren, D. S. Li, M. Zheng, Y. J. Wang, Z. Lin, Nanoscale. 2, 2062 (2010).
[9] Z. Y. Gao, N. Liu, D. P. Wu, W. G. Tao, F. Xu, K. Jiang, Appl. Surf. Sci. 258, 2473 (2012).
[10] R. I. Nooney, D. Thirunavukkarasu, Y. Chen, R. Josephs, A. E. Ostafin, Chem. Mater. 14, 4721 (2002).
[11] Y. Kievsky, I. Sokolov, IEEE Trans. Nanotechnol. 4, 490 (2005).
[12] W. Tang, F. Teng, Y. B. Hou, Y. S. Wang, F. R. Tan, S. C. Qu, Z. G. Wang, Appl. Phys. Lett. 96, 163112 (2010).
[13] A. Pourahmad, Mater Lett. 65, 2551 (2011).
| ||
آمار تعداد مشاهده مقاله: 9,190 تعداد دریافت فایل اصل مقاله: 1,296 |