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(Color online) HR-TEM of NanoZrO2-CNT composite (a) at low magnification, (b) showing entrapment of ZrO2 nanoparticles between two CNT [inset shows fast fourier transform of ZrO2 nanoparticles], (c) exhibiting filling up of bore diameter of CNT by ZrO2 [inset exhibits the region where ZrO2 is inside the CNT cavity].
(Color online) (a) SEM image of NanoZrO2-CNT composite shows wrapping of CNT sidewalls by ZrO2 nanoparticles, (b) EDS pattern with (c) weight % of the elements of NanoZrO2-CNT film.
(Color online) (a) Nyquist diagram of (1) NanoZrO2/ITO, (2) NanoZrO2-CNT/ITO, and (3) DNA-NanoZrO2-CNT/ITO electrodes. (b) DNA hybridization of ssDNA-NanoZrO2-CNT/ITO bioelectrode in PBS using [Fe(CN)6)]3−/4− as a redox marker, at pH 7.0.
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