Co3O4-Al2O3納米材料的合成、表征及對(duì)羅丹明B的催化降解作用.pdf

1、華中科技大學(xué)碩士學(xué)位論文Co3O4/Al2O3 納米材料的合成、表征及對(duì)羅丹明B 的催化降解作用姓名：黃式強(qiáng)申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：無機(jī)化學(xué)指導(dǎo)教師：黃開勛2011-01-08華 中 科 技 大 學(xué) 碩 士 學(xué) 位 論 文 華 中 科 技 大 學(xué) 碩 士 學(xué) 位 論 文 IIAbstract Cobaltosic oxide with the spinel phase has great application in treatmen

2、t of dye-containing wastewater by catalytic degradation. Micro- or nano-aluminum oxide has been extensively used as catalyst supports due to its high chemical stability, high thermal stability, and high specific surface

3、area. By hydrothermal synthesis method, using surfactants natural soybean lecithin and cetyltrimethyammonium bromide as templates, cobaltosic oxide spherical nanostructures and alumina nanoparticles were prepared. Th

4、e supported type catalysts cobaltosic oxide/aluminum oxide was also synthesized by high temperature solid phase reaction. The as-prepared products were characterized by X-ray powder diffraction (XRD), ultraviolet–visible

5、 spectrum, field-emission scanning electron microscopy (FESEM) and Fourier transform infrared spectroscopy (FT-IR). The main results are as follows: 1. Cobaltosic oxide spherical nanostructures were fabricated via a hyd

6、rothermal process using lecithin spherical micelle as template and cobalt acetate tetrahydrate as precursors. Micelle templates were formed by ultrasonic and intensive magnetic stirring under assisted solvent absolute al

7、cohol. The influences of alcohol dosage, temperature, reaction time and alkaline source on morphology of products were researched, and a possible formation mechanism of cobaltosic oxide spherical nanostructures was discu

8、ssed. 2. AlOOH nanoparticles were synthesized by hydrothermal process at 200 oC for 12 h, using aluminum nitrate, triethylamine as precusors and cetyltrimethyammonium bromide as template. On this basis, the alumina suppo

9、rt was prepared by high temperature solid state reaction using the as-synthesized AlOOH nanoparticles as precursor at 520oC for 3h. The catalytic degradation of Rhodamine B by supported catalyst Co3O4/Al2O3 and influence