Synthsis Of Hollow Cu-containing Oxides Submicrospheres By Soft Cluster Template

Hollow cuprous oxide (Cu2O) submicrospheres were reduced from CuSO4 by N2H4·H2O simply in the soft template of SDS-PVP necklace-like cluster. XRD pattern shows that the synthesized hollow submicrospheres are pure Cu2O crystals. SEM images demonstrate the productions are submicrospheres with rough suface and uniform size. The growing progress of the hollow Cu2O submicrospheres were illustrated by TEM images, and explained by the secondary assembly induced by the the SDS-PVP nacelace-like soft clusters template. And the radius of the submicrospheres of hollow Cu2O submicrospheres can be controlled by adjusting the concentration of CuSO4 or the reducing agent.The acid fuchsine solution was photocatalytically degraded with hollow Cu2O submicrospheres as catalyst. The time of degradation, the effects of the dosage of Cu2O were tested. The experimental results indicated that the degradation efficiency of the acid fuchsine solution of 5 mg/L could reach 97.8% when the solid-liquid ratio is 0.100 g/L. The degeration rate increased with the decrease of the size of the hollow Cu2O submicrospheres. Moreover, after repetitively using the catalystfor 5 times, its photocatalytic degradation rate could remain above 70%.Baked the hollow Cu2O submicrospheres to prepare CuO submicrospheres. According to the results of the experiment, natural drying and rising temperature gradually can make CuO microparticles have uniform size, shape and structure. On the premise of that Cu2O microparticles can change into CuO microparticles, baking temperature should be as low as possible. Using SDS-PVP and SDS-PEG as soft template to prepare CuO microparticles, the products both are steady and with uniform size and well dispersed.In this paper, the interaction between copper ions and sodium dodecyl sulfate (SDS)- Polyethyleneglycol (PEG) system was studied by means of surface tension method and steady-state fluorescence quenching technique. Theγ-lgc curves of CuSO4-SDS-PEG systems have only one critical concentration: cmc. SDS is adopted on the chain of PEG as single molecule. With the addition of Cu2+, the cmc of the system was obviously increased. Hollow Cu2O submicrospheres were reduced from CuSO4 by N2H4·H2O in the SDS-PVP aqueous solution. XRD pattern shows that the synthesized hollow submicrospheres are pure Cu2O crystals. TEM images demonstrated the production were hollow Cu2O submicrospheres, with uniform size, and well dispersed.