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中文摘要：
采用溶胶-凝胶法制备了Co掺杂TiO2粉体（Co-TiO2）,采用XRD、FT-Raman、UV-Vis、PL等方法对其进行表征和分析。结果表明,Co掺杂降低了TiO2的相转变温度,拓展了TiO2对可见光的吸收范围,有效地抑制了光生电子-空穴对的复合。光催化降解亚甲基蓝（MB）的实验表明,n（Co）∶n（Ti）=0.002,400℃烧结的Co-TiO2粉体具有最佳光催化性能,在普通日光灯下对亚甲基蓝的降解率达90.56%,明显优于德国Degussa公司生产的P25纯TiO2光催化剂对亚甲基蓝的降解率44.95%。
英文摘要：
Co doped TiO2 powder（Co-TiO2）were synthesized by sol-gel method.The obtained samples were characterized by XRD,FT-Raman,UV-Vis,PL,respectively.The results show that Co-doping can decrease the phase transition temperature,broaden the absorption spectrum to the visible light region,and inhibit the recombination of photoelectron-hole pairs.The experiments of photocatalytic degradation of methylene blue（MB）indicate that the photocatalytic activity of the Co-TiO2 powder prepared at n（Co）∶n（Ti）=0.002 and the calcinated temperature of 400℃ was the best.Under the fluorescent light irradiation,the degradation rate of the Co-TiO2 sample to methyl blue reaches 90.56%,which was obviously higher than 44.95% of P25TiO2 photocatalyst which made in Degussa,German.
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