Nano Archive

Novel synthesis of silver selenide nano-powder from silver nitrate and organo-selenium compound

Khanna, P. K. and Das, B. K. (2004) Novel synthesis of silver selenide nano-powder from silver nitrate and organo-selenium compound. Materials Letters, 58 (6). 1030 - 1034.

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Official URL: http://www.sciencedirect.com/science/article/B6TX9...

Abstract

Silver selenide nano-powder has been prepared, by use of cycloalkeno-1,2,3-selenadiazole, an organic compound that releases highly reactive form of selenium upon thermolysis. The simple and one-step preparation can be considered a green synthesis. Powder X-ray diffraction pattern revealed that the pure beta silver selenide (β-Ag2Se) is formed and analysis suggests that the particles are much smaller than the bulk powder of this narrow band gap material. The Scanning Electron Microscopy (SEM) analysis indicates that the size of the particles are in the range of about <500 nm. Thermal analysis (TGA) revealed a small (1.25%) weight loss due to the presence of organics from the reaction medium. Differential Scanning Calorimetry (DSC) was used to check the phase transition. It is found that silver selenide shows phase transition at 140 °C that matches well with the reported data.

Item Type:Article
Uncontrolled Keywords:Noble metal chalcogenides; Nano-powder; Semiconductor; Chemical synthesis
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanostructured materials
Material Science > Nanochemistry
ID Code:6890
Deposited By:SPI
Deposited On:24 Sep 2009 16:43
Last Modified:24 Sep 2009 16:43

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