Formation of copper oxide II in polymer solution-blow-spun fibers and the successful non-woven ceramic production

Author(s)

Bitencourt da Silva, Alex Nascimento ; de Moura, Marcia Regina ; Zadorosny, Rafael

• Document type: Journal article
• Source: Materials Chemistry and Physics; v. 278, p. 7-pg., 2022-02-15.

Abstract

Copper oxide II is a p-type semiconductor that can be used in several applications. Focusing on producing such material using an easy and low-cost technique, we followed an acetate one-pot-like route for producing a polymer precursor solution with different acetates:PVP (polyvinylpyrrolidone) weight ratios. Then, composite nanofibers were produced using the solution blow spinning (SBS) technique. The ceramic CuO samples were obtained after a calcination process at 600 ? for 2 h, applying a heating rate of 0.5 ? /min. Non-woven fabric like ceramic samples with average diameters lower than 300 nm were successfully obtained. SEM images show relatively smooth fibers with a granular morphology. XRD shows the formation of randomly oriented grains of CuO. In addition, FTIR and XRD analyses show the CuO formation before the heat treatment. Thus, a chemical reaction sequence was proposed to explain the results. (AU)

• FAPESP's process: 16/12390-6 - Macro and mesoscopic superconductivity: synthesis of ceramic materials and computational simulations based on the TDGL theory
• Grantee: Rafael Zadorosny
• Support Opportunities: Regular Research Grants
• FAPESP's process: 19/06170-1 - Bacterial nanocellulose incorporation in hydro soluble polymers edible matrices for a study of the viability in obtaining a new nanocomposite
• Grantee: Márcia Regina de Moura Aouada
• Support Opportunities: Regular Research Grants