Controllable synthesis of Cu2O/Cu composites with stable photocatalytic properties.

Controllable synthesis of Cu2O/Cu composites with stable photocatalytic properties.

Journal of nanoscience and nanotechnology (2014-04-18)

Xueqin Liu, Fei Li, Huifang Wang, Jianbo Yang, Zhen Li, Yongqian Wang, Hongyun Jin

ABSTRACT

Here we reported a facile approach to synthesize Cu2O/Cu composite particles by one-step sono-chemical process. The content of Cu in the Cu2O/Cu composites can be easily controlled by adjusting the synthesis time. Phase, morphology and optical properties of the products were carried out by X-ray diffraction (XRD), field-emission scanning electron microscopy (FSEM), transmission electron microscope (TEM), ultraviolet-visible (UV-vis) spectroscopy and nitrogen adsorption apparatus. Using photocatalytic degradation of Methyl orange (MeO) dye under visible-light illumination, we have investigated the influence of Cu on the photocatalytic activity of Cu2O, to find out its potential application in waste water treatment. Especially, the stability of the photocatalyst was confirmed using reclaimed Cu2O/Cu in ten successive runs. Results demonstrated clearly that Cu2O/Cu were stable and resistant to photocorrosion during the photocatalytic oxidation of organic compounds, indicating that these Cu2O/Cu composites are promising candidates for pollutant processing.

MATERIALS

Product Number

Brand

Product Description

450804

Sigma-Aldrich

Copper(II) oxide, powder, 99.995% trace metals basis

326429

Sigma-Aldrich

Copper, wire, diam. 0.25 mm, 99.999% trace metals basis

349224

Sigma-Aldrich

Copper, wire, diam. 2.0 mm, 99.999% trace metals basis

450812

Sigma-Aldrich

Copper(II) oxide, powder, 99.99% trace metals basis

326410

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114510

Sigma-Aldrich

Methyl Orange, ACS reagent, Dye content 85 %

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Sigma-Aldrich

Copper, beads, 2-8 mm, ≥99.99% trace metals basis

544868

Sigma-Aldrich

Copper(II) oxide, nanopowder, <50 nm particle size (TEM)

68250

Sigma-Aldrich

Methyl Orange, suitable for microscopy

203130

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Copper(II) oxide, 99.999% trace metals basis

254177

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