In the present study we have focussed on fabrication of core/shell CdSe/CdS quantum dots (QD’S) to detect Hydrogen sulphide (H2S) gas which is known as hazardous toxic gas. CdSe and Core/shell CdSe/CdS QD’S were prepared via colloidal synthesis in aqueous medium. CdSe and Core/shell CdSe/CdS QD’S optical properties were characterized by ultraviolet-visible (UV-vis) absorption spectra and Photoluminescence spectra. Polycarbonate (PC) nanofibrous membrane was used as a matrix to embed core/shell quantum dots, as they have increased surface area which enhances the incorporation. Nanofibrous membrane were prepared by using an electrospinning set-up, and were characterized with SEM. Dip coating method was used to embedded QD’S in nanofibrous membranes and characterized with EDAX for elemental analysis. Further work is being carried out to fabricate the sensor set-up to test the fluorescence quenching ability of core/shell CdSe/CdS QD’S when subjected with H2S gas. It will be easier to operate.
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