Electron beam induced synthesis of CdSe nanomaterials: Tuning of shapes from rods to cubes

Cadmium selenide (CdSe) nanomaterials of different shapes have been synthesized in the water pool of the water-in-oil microemulsions through 7MeV electron beam irradiation. The rod shaped CdSe nanomaterials of lengths and breadths up to 1μm and 200nm, respectively with aspect ratios from 3 to 5 were...

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Veröffentlicht in:Materials letters 2011-06, Vol.65 (12), p.1815-1818
Hauptverfasser: Singh, Shalini, Guleria, Apurav, Rath, M.C., Singh, A.K., Adhikari, S., Sarkar, S.K.
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Sprache:eng
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Zusammenfassung:Cadmium selenide (CdSe) nanomaterials of different shapes have been synthesized in the water pool of the water-in-oil microemulsions through 7MeV electron beam irradiation. The rod shaped CdSe nanomaterials of lengths and breadths up to 1μm and 200nm, respectively with aspect ratios from 3 to 5 were grown in the case of microemulsions containing lower water content, water to surfactant concentrations ratio, w0=10. In contrast, the cubic shaped CdSe nanomaterials of dimensions about 100nm were formed in the microemulsions with higher water contents, w0 values from 20 to 40. Such a transformation of shape from rod to cube was attributed to the change in the hydrophobicity and hydrophilicity of the micro-environment in the microemulsions. The as-grown CdSe nanomaterials were stable at ambient conditions and thus expected to be very useful in the device applications. Cadmium selenide nanomaterials of different shapes have been synthesized in the water pool of the water-in-oil microemulsions through 7MeV electron beam irradiation. The rod shaped CdSe nanomaterials of aspect ratios 3 to 5 were formed in microemulsions containing lower water content (w0=10) whereas, the cubic shaped CdSe nanomaterials of dimensions about 100nm were formed in the microemulsions with higher water contents, w0 values from 20 to 40.▪ ► Electron-beam induced CdSe in CTAB microemulsions exhibits different shapes. ► Rod shaped CdSe was formed in CTAB microemulsions of lower w0 values. ► Cubic shaped CdSe was formed in CTAB microemulsions of higher w0 values. ► As-grown CdSe nanomaterials were found to be fairly stable in ambient conditions.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2011.03.050