تعداد نشریات | 418 |
تعداد شمارهها | 10,005 |
تعداد مقالات | 83,618 |
تعداد مشاهده مقاله | 78,303,636 |
تعداد دریافت فایل اصل مقاله | 55,358,619 |
Green chemistry approach for the synthesis of CuO nanostructure | ||
International Journal of Nano Dimension | ||
مقاله 3، دوره 7، شماره 2، مرداد 2016، صفحه 121-126 اصل مقاله (964.9 K) | ||
نوع مقاله: Reasearch Paper | ||
شناسه دیجیتال (DOI): 10.7508/ijnd.2016.02.003 | ||
نویسنده | ||
Afshin Pourahmad* | ||
Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran. | ||
چکیده | ||
Molecular sieves MCM-41 were synthesized from rice husk ash (RHA) as alternative sources of silica. The material was synthesized by a room temperature method from a gel with the molar composition SiO2: 1.6EA: 0.215HDTMABr: 325H2O with pH correction. The cetyltrimethylammonium bromide (CTMABr) was used as a structure template. Nanocomposite containing 5.0 and 10.0 wt.% of Cu was synthesized under solid state reaction. The calcinations of samples were done at two different temperatures, 400 and 600◦C. The morphology and the physicochemical properties of the prepared samples were investigated by X-ray diffraction (XRD), UV–Vis diffuse reflectance spectroscopy (UV–Vis DRS), Fourier transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM). TEM images indicated that nanoparticles size of CuO is ~ 3 nm. | ||
کلیدواژهها | ||
Green Chemistry؛ nanocatalyst؛ Nanocomposite؛ Semiconductor؛ TEM | ||
مراجع | ||
[1] Tan W-Ch., Yap S-Y., Matsumoto A., Othman R.,Yeoh F-Y., (2011), Synthesis and characterization of zeolites NaA and NaY from rice husk ash. Adsorption. 17: 863–868. [2] Beck J. S., Vartuli J. C., Roth W. J., Leonowicz M. E., Kresge C. T., Schmitt K. D., Chu C. T. W., Olson D. H., Sheppard E.W., (2012), A new family of mesoporous molecular sieves prepared with liquid crystal templates. J. Am. Chem. Soc. 114: 10834–10843. [3] Pourahmad A.,(2013), Nanocomposite prepared from ZnS nanoparticles and molecular sieves nanoparticles by ion exchange method: Characterization and its photocatalytic activity. Spectrochim Acta: A. 103: 193-198. [4] Pourahmad A., (2012), Ag2S nanoparticle encapsulated in mesoporous material nanoparticles and its application for photocatalytic degradation of dye in aqueous solution. Superlattice Microst. 52: 276-287. [6] Srivastava V. C., Mall I. D., Mishra I. M., (2006), Characterization of mesoporous rice huskash (RHA) and adsorption kinetics of metal ions from aqueous solution onto RHA. J. Hazard. Mater: sB. 134: 257–267. [6] Ahmed A. E., Adam F., (2007), Indium incorporated silica from rice husk and its catalytic activity. Micropor. Mesopor. Mater. 103: 284–295. [7] Endud S., Wong K. L., (2007), Mesoporous silica MCM-48 molecular sieve modified SnCl2 in alkaline medium for selective oxidation of alcohol. Micropor. Mesopor. Mater. 101: 256–263. [8] Thuadaij N., Nuntiya A., (2008), Preparation of nanosilica powder from rice husk ash by precipitation method. Chiang Mai. J. Sci. 35: 206–211. [9] Pourahmad A., (2015), Fabrication of nanocatalyst in aqueous solution with photocatalytic activity of methylene blue. Synth. React. Inorg. Met.-Org. Chem. 45: 1080-1086. | ||
آمار تعداد مشاهده مقاله: 1,805 تعداد دریافت فایل اصل مقاله: 1,628 |