Citation: GU Shao-Nan, SUN He-Yun, FAN Ying-Ju, SUN Zhong-Xi. Synthesis of Size Tunable Nano Copper Oxide and Its Surface Sulphidization[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(6): 1185-1191. doi: 10.3969/j.issn.1001-4861.2013.00.181 shu

Synthesis of Size Tunable Nano Copper Oxide and Its Surface Sulphidization

1.
School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China

Received Date: 10 October 2012
Available Online: 5 February 2013
Fund Project: 国家自然科学基金(No.51274104,50874052) (No.51274104,50874052)国家重大科学研究计划(No.2011CB933700)资助项目。 (No.2011CB933700)

Using Cu(NO₃)₂·3H₂O as raw materials, 25% ammonia as complexing agent and NaOH as precipitant, the size tunable nano CuO was synthesized in variable alcohol-water systems. The component and the optimized calcination temperature of the precursor were determined through TG-DTA analysis. The solvent used in ammonia -water system was ethanol, butanol and octanol respectively and their effect on the product particle size was discussed. The results showed that the specific surface areas of CuO nanoparticles increased and their sizes decreased with increasing the carbon chain length of alcohol used. The surface sulphidization of CuO (CuO/CuS) was obtained by heat treatment of CuO and elemental sulfur mixture in a tube type furnace under nitrogen atmosphere at 200 ℃ for 90 minutes. Powder X-ray diffraction and infrared absorption spectroscopy analysis methods were used to characterize the physical and chemical properties of nano CuO and CuO/CuS. The adsorption of potassium ethyl xanthate at the surfaces of nano CuO and CuO/CuS was studied. The result revealed that the capability of CuO/CuS adsorbing potassium ethyl xanthate was markedly enhanced, further proving the surface sulphidization occurred on the surface of nano CuO.
- complex precipitation;nano copper oxide;surface sulphidization;adsorption;xanthate
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