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Synthesis and characterization of DNA fenced, self-assembled SnO<sub>2</sub> nano-assemblies for supercapacitor applications

Synthesis and characterization of DNA fenced, self-assembled SnO2 nano-assemblies for supercapacitor applications

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NITHIYANANTHAM, Udayashankar, Ananthakumar RAMADOSS, Subrata KUNDU, 2016. Synthesis and characterization of DNA fenced, self-assembled SnO2 nano-assemblies for supercapacitor applications. In: Dalton Transactions. 45(8), pp. 3506-3521. ISSN 1477-9226. eISSN 1477-9234. Available under: doi: 10.1039/C5DT04920B

@article{Nithiyanantham2016Synth-37039, title={Synthesis and characterization of DNA fenced, self-assembled SnO2 nano-assemblies for supercapacitor applications}, year={2016}, doi={10.1039/C5DT04920B}, number={8}, volume={45}, issn={1477-9226}, journal={Dalton Transactions}, pages={3506--3521}, author={Nithiyanantham, Udayashankar and Ramadoss, Ananthakumar and Kundu, Subrata} }

2017-02-01T08:09:57Z 2017-02-01T08:09:57Z 2016 Kundu, Subrata Nithiyanantham, Udayashankar Ramadoss, Ananthakumar eng Self-assembled, aggregated, chain-like SnO<sub>2</sub> nano-assemblies were synthesized at room temperature by a simple wet chemical route within an hour in the presence of DNA as a scaffold. The average size of the SnO<sub>2</sub> particles and the chain diameter were controlled by tuning the DNA to Sn(II) molar ratio and altering the other reaction parameters. A formation and growth mechanism of the SnO<sub>2</sub> NPs on DNA is discussed. The SnO<sub>2</sub> chain-like assemblies were utilized as potential anode materials in an electrochemical supercapacitor. From the supercapacitor study, it was found that the SnO<sub>2</sub> nanomaterials showed different specific capacitance (C<sub>s</sub>) values depending on varying chain-like morphologies and the order of C<sub>s</sub> values was: chain-like (small size) > chain-like (large size). The highest Cs of 209 F g<sup>−1</sup> at a scan rate of 5 mV s<sup>−1</sup> was observed for SnO<sub>2</sub> nano-assemblies having chain-like structure with a smaller size. The long term cycling stability study of a chain-like SnO<sub>2</sub> electrode was found to be stable and retained ca. 71% of the initial specific capacitance, even after 5000 cycles. A supercapacitor study revealed that both morphologies can be used as a potential anode material and the best efficiency was observed for small sized chain-like morphology which is due to their higher BET surface area and specific structural orientation. The proposed route, by virtue of its simplicity and being environmentally benign, might become a future promising candidate for further processing, assembly, and practical application of other oxide based nanostructure materials. Kundu, Subrata Nithiyanantham, Udayashankar Synthesis and characterization of DNA fenced, self-assembled SnO<sub>2</sub> nano-assemblies for supercapacitor applications Ramadoss, Ananthakumar

Dateiabrufe seit 01.02.2017 (Informationen über die Zugriffsstatistik)

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