De, Arijit and Kundu, Susmita (2016) Synthesis and Study of Gel Calcined Cd-Sn Oxide Nanocomposites. Journal of Materials Engineering and Performance, 25 (7). pp. 2746-2751. ISSN 1059-9495

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Cd-Sn oxide nanocomposites were synthesized by sol-gel method from precursor sol containing Cd:Sn = 2:1 and 1:1 mol ratio. Instead of coprecipitation, a simple novel gel calcination route was followed. Cd (NO3)(2). 4H(2)O and SnCl4. 5H(2)O were used as starting materials. Gel was calcined at 1050 A degrees C for 2 h to obtain nanocomposites. XRD analysis reveals the presence of orthorhombic, cubic Cd2SnO4 along with orthorhombic, hexagonal CdSnO3 phases in both the composites. SEM and TEM studies indicate the development of nanocomposites of different shapes suggesting different degrees of polymerization in precursor sol of different composition. UV-Vis absorption spectra show a blue shift for both the composites compared to bulk values. Decrease of polarization with frequency, dipole contribution to the polarization, and more sensitivity to ethanol vapor were observed for the nanocomposite derived from precursor sol containing Cd:Sn = 2:1 mol ratio.

Item Type: Article
Subjects: Engineering Materials
Divisions: Sensor and Actuator
Depositing User: Bidhan Chaudhuri
Date Deposited: 11 Nov 2016 10:21
Last Modified: 11 Nov 2016 10:21

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