Fabrication of Ethanol Chemical Sensors Based on As-Prepared Gd2O3 Nanorods by Facile Hydrothermal Routes
Well-crystalline Gd2O3 nanorods (NRs) were synthesized by facile hydrothermal route. The structure and morphology of as-prepared nanostructures was analyzed in detail using powder X-ray diffractometer (XRD) and field-emission scanning electron microscope (FE-SEM). XRD analysis revealed that the structure of as-prepared material belongs to cubic crystal system with lattice parameter ∼10.79 Å and crystallite size ∼51.7 nm. Here, the fabrication processes together with analytical performances of highly-sensitive, reliable and reproducible Gd2O3 NRs based chemical sensors is presented. Sensing mechanism of Gd2O3 NRs as efficient electron mediator for the detection of ethanol chemical is described. As-fabricated sensor demonstrated the high-sensitivity of ∼0.6940 μA mM–1 cm–2 with low detection limit (∼0.02 ± 0.001 mM) and correlation coefficient (R = 0.7345) in short response time. Consequently, on the basis of the structures and optical properties, it is demonstrated that the morphologies and the optical characteristics can be extended to a large-scale in un-doping nanomaterials and proficient chemical sensors applications.
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Document Type: Research Article
Publication date: December 1, 2013
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- Journal of Colloid Science and Biotechnology is an international multidisciplinary peer- reviewed journal covering all aspects of colloid science including colloids preparation, characterization, structure-property relationships, spectroscopy, chemical and physical properties and applications of colloids in biotechnology, medicine and pharmaceuticals. This journal deals with interdisciplinary research areas of chemistry, physics, biology, materials science, polymer science, nanotechnology covering all topics related to colloids such as latexes, emulsions, suspensions, micellar systems, gels, composites, hybrids, surfactants, aerosols, foams, minerals, soft matter, microfluidics, encapsulation processes of active molecules, biomolecules, surfacial and interfacial processes, catalysis, electrochemistry, theoretical aspects, computer simulations and colloids in biotechnology and medicine.
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