Electrospun single crystal MoO3 nanowires for bio-chem sensing probes
AssigneeThe Research Foundation of State University of New York
InventorsPelagia-Irene Gouma, Aisha Suzette Haynes, Krithika Kalyanasundaram
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Abstract
Single crystal MoO3 nanowires were produced using an electrospinning technique. High resolution transmission electron microscopy (HRTEM) revealed that the 1-D nanostructures are from 10-20 nm in diameter, on the order of 1-2 μm in length, and have the orthorhombic MoO3 structure. The structure, crystallinity, and sensoric character of these electrostatically processed nanowires are discussed. It has been demonstrated that the non-woven-network of MoO3 nanowires exhibits higher sensitivity and an n-type response to NH3 as compared to the response of a sol-gel based sensor.
Claims4
A method for producing electrospun single crystal MoO3 nanowires,
- the method comprising steps of:
- (i) centrifuging a MoO3 solution in a solvated mixture;
- (ii) mixing the centrifuged MoO3 mixture with a PVP solution to produce a solution for electrospinning;
- (iii) electrospinning the solution of step (ii) to produce films;
- (iv) calcinating the films of step (iii) to produce a calcined mat wherein said calcinating is performed at 25° C. to 500° C. for about two hours, followed by stabilization for approximately 8 hours at 500° C. and then a cooling down period from 500° C. to 25° C. for about 2 hours in order to obtain a calcined mat;
- (v) dissolving the calcined mat in a solvent to produce a dissolved polymer solution;
- and
- (vi) depositing the dissolved polymer solution onto an alumina substrate forming a thin film of single crystal nanowires.
Dependencies are inferred from the claim text.