TY - JOUR

T1 - Co3O4–ZnO hierarchical nanostructures by electrospinning and hydrothermal methods

A1 - Kanjwal,Muzafar Ahmed

A1 - Sheikh,Faheem A.

A1 - Barakat,Nasser A.M.

A1 - Chronakis,Ioannis S.

A1 - Kim,Hak Yong

AU - Kanjwal,Muzafar Ahmed

AU - Sheikh,Faheem A.

AU - Barakat,Nasser A.M.

AU - Chronakis,Ioannis S.

AU - Kim,Hak Yong

PB - Elsevier BV North-Holland

PY - 2011

Y1 - 2011

N2 - A new hierarchical nanostructure that consists of cobalt oxide (Co3O4) and zinc oxide (ZnO) was produced by the electrospinning process followed by a hydrothermal technique. First, electrospinning of a colloidal solution that consisted of zinc nanoparticles, cobalt acetate tetrahydrate and poly(vinyl alcohol) was performed to produce polymeric nanofibers embedding solid nanoparticles. Calcination of the obtained electrospun nanofiber mats in air at 600°C for 1h, produced Co3O4 nanofibers with rough surfaces containing ZnO nanoparticles (i.e., ZnO-doped Co3O4 nanofibers). The rough surfaced nanofibers, containing ZnO nanoparticles (ZnNPs), were then exploited as seeds to produce ZnO nanobranches using a specific hydrothermal technique. Scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were employed to characterize the as-spun nanofibers and the calcined product. X-ray powder diffractometery (XRD) analysis was used to study the chemical composition and the crystallographic structure.

AB - A new hierarchical nanostructure that consists of cobalt oxide (Co3O4) and zinc oxide (ZnO) was produced by the electrospinning process followed by a hydrothermal technique. First, electrospinning of a colloidal solution that consisted of zinc nanoparticles, cobalt acetate tetrahydrate and poly(vinyl alcohol) was performed to produce polymeric nanofibers embedding solid nanoparticles. Calcination of the obtained electrospun nanofiber mats in air at 600°C for 1h, produced Co3O4 nanofibers with rough surfaces containing ZnO nanoparticles (i.e., ZnO-doped Co3O4 nanofibers). The rough surfaced nanofibers, containing ZnO nanoparticles (ZnNPs), were then exploited as seeds to produce ZnO nanobranches using a specific hydrothermal technique. Scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were employed to characterize the as-spun nanofibers and the calcined product. X-ray powder diffractometery (XRD) analysis was used to study the chemical composition and the crystallographic structure.

U2 - 10.1016/j.apsusc.2011.04.034

DO - 10.1016/j.apsusc.2011.04.034

JO - Applied Surface Science

JF - Applied Surface Science

SN - 0169-4332

IS - 18

VL - 257

SP - 7975

EP - 7981

ER -