A novel method for metal oxide nanowire synthesis

Abstract

Nanowires (NWs) of metal oxides (Fe(2)O(3), CuO, V(2)O(5) and ZnO) were grown by an efficient non-catalytic economically favorable method based on resistive heating of pure metal wires or foils at ambient conditions. The growth rate of iron oxide NWs exceeds 100 nm s(-1). Produced NWs were typically 1-5 microm long with diameters from 10 to 50 nm. The produced metal oxide NWs were characterized by means of SEM, TEM, EDX, XPS and Raman techniques. The field emission measurements from the as-produced CuO NWs were found to have a threshold field as low as 4 V microm(-1) at 0.01 mA cm(-2). The formation mechanism of the NWs is discussed.

Antioxidant and Catalytic Activity of Biosynthesized CuO Nanoparticles Using Extract of Galeopsidis herba

“…Nanomaterials are part of a commercial revolution that has resulted in an explosion of hundreds of new products due to their diverse physico-chemical properties, enabling their usage in a wide range of innovative applications. In the last years, synthesis of metal oxide nanostructures with desired architecture has received significant attention due to their unique properties and applications [3][4][5][6]. In literature there are many physical and chemical methods synthesis of metal nanoparticles like physical vapor deposition, chemical vapor deposition, sol-gel method, microwave-assisted synthesis, ultrasonication method, electrochemical synthesis and chemical reduction of metallic ions.…”

Efficient catalytic effect of CuO nanostructures on the degradation of organic dyes

“…In the last few years, synthesis of metal oxide nanostructures with desired architecture has received considerable attention due to their unique properties and potential for many applications [1,2]. Among metal oxides, cupric oxide (CuO) is a p-type semiconductor with a narrow bandgap of 1.2 eV [3].…”

Mechanistic investigation of ZnO nanowire growth

“…11,12 High crystallinity ZnO NWs are produced without catalyst and dominant role of Zn and ZnO vapors, in a second time scale. Based on experimental results we show that ZnO NW growth is determined by zinc interstitial migration in a ZnO layer.…”

“…11 ZnO NW synthesis was carried out by resistive heating of a Zn wire under ambient air conditions in the range of 673-1123 K, i.e., at temperatures near or higher than the melting point of zinc ͑692 K͒. During the synthesis a protective 0.5-1 m thickness of ZnO layer forms on the surface of Zn wire ͓Fig.…”