Control Synthesis And Adsorption Properties Of Cuprous Oxide Micro/Nano-structured Material

As an effective adsorbent and catalyst for degradation of organic pollutants,semiconductor materials have becoming a research focus in recent years. Cuprous oxide(Cu2O) is paid more attention than the other semiconductor materials due to its variousadvantages such as high photocatalytic activity, non-toxic and low-cost et al. In thispaper, we use simple methods for preparing cuprous oxide with different morphologies.And theirs adsorption properties were studied.1. Cu2O submicro-octahedra were prepared by using copper chloride, sodiumhydroxide and D-(+)-glucose through a simple water bath method. The product wascharacterized by using X-ray diffraction (XRD) and field-emission scanning electronmicroscopy (FESEM). The specific surface area of the product was calculated by usingBET model according to N2adsorption-desorption isotherms. The copper sources,reductant, the amount of glucose and the reaction time on the product morphology andsize were discussed. Finally, the adsorption activity of the product towards congo redwas investigated.2. Porous cuprous oxide (Cu2O) nanospheres were successfully synthesized withcopper acetate as a source of copper at room temperature by a simple liquid phasemethod. The crystal phase and purity of the product were analyzed through X-raydiffraction (XRD) diffractometer. The morphology and size of the product wereobserved with field-emission scanning electron microscopy (FESEM) and highresolution transmission electron microscopy (HRTEM). The specific surface area of theproduct was calculated by using BET model according to N2adsorption-desorptionisotherms, and its pore size was also calculated by using BJH model. The effect of thecopper sources on product morphology and size was investigated. Finally, theadsorption activity of the product towards methyl orange (MO) was investigated.3. The hollow Cu2O nanospheres were successfully prepared by using copperchloride and hydroxylamine hydrochloride through a simple hydrothermal method. Theproducts were characterized by X-ray diffraction (XRD), field-emission scanningelectron microscopy(FESEM), high resolution transmission electron microscopy (HRTEM), N2adsorption-desorption, and Fourier transform infrared (FT-IR) spectrum.The effects of the reaction time, reaction temperature, and the amount of sodiumhydroxide on the product morphology and size were discussed. Finally, the adsorptionability of the product towards methyl orange and congo red was investigated.