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Morphology Controlled Synthesis of Co3O4 Nanostructures for Hydrazine Chemical Sensor

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Herein, we report the successful synthesis of two types of Co3O4 nanostructures, i.e., urchin-shaped and nanoneedle bundles. The prepared nanomaterials were synthesized via facile hydrothermal and subsequent heat treatment process at 300 °C. The structure and morphologies of both prepared materials were thoroughly characterized using different analytical tools and finally, the prepared nanomaterials were used as electron mediators to fabricate high-sensitive hydrazine chemical sensors. The detailed sensing studies revealed that the fabricated sensors based on Co3O4 urchin-shaped and nanoneedle bundles exhibited high sensitivity and low-detection limit. The detailed sensing performances such as sensitivity, detection limit, and linear range for the fabricated hydrazine chemical sensors were comprehensively compared. The results exhibited that the Co3O4 urchin-shaped structures based hydrazine sensor showed wider linear range (5–610 μM) and lower detection limit (1.29 μM), however, the Co3O4 nanoneedle bundles based hydrazine sensor exhibited higher sensitivity (95.25 μA·mM–1).
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Document Type: Short Communication

Publication date: August 1, 2016

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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