摘要
采用微波均相法制备具有光催化活性的CeO_2纳米棒,用扫描电镜(SEM)、透射电镜(TEM)、X射线衍射(XRD)、比表面积与孔径分布测试(BET-BJH)以及紫外-可见吸收光谱测试(UV-vis)等手段对其进行表征,研究了尿素浓度对晶粒尺寸、形貌和光催化性能的影响,结果表明,当尿素浓度达到6.0mol/L时产物的棒状结构明显,由粒径为20-40nm的晶粒组成的球链状结构聚集而成,且催化性能较好。以甲基橙为脱色模型进行降解反应,当氧化铈纳米棒加入量为2.0g/L时,可见光照1h后甲基橙降解率达到了95.4%,明显高于二氧化钛P25的降解率。
Nanorod-CeO2 photocatalyst was synthesized by the microwave homogeneous precipitation method and was characterized by SEM,TEM,XRD,BET-BJH,and UV-vis spectrum.The effects of urea concentration on the grain size,morphology and Photocatalytic property were investigated.The results show that when the CO（NH2）2 concentration is 6.0 mol/L,the obvious club-shaped structure consisted of chains which are formed by grains whose size is 20-40 nm.The photocatalytic activity of CeO2 nanorods was evaluated by degradation of methyl orange.The degradation rate of methyl orange reaches 95.4%under the reaction conditions of the catalyst amount of 2.0 g/L,the sunshine,and the reaction time of 1 h.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2011年第2期219-224,共6页
Chinese Journal of Materials Research
基金
山东省优秀中青年科学家奖励基金BS2009CL029
山东省重点学科基金XTD0703资助项目~~
关键词
无机非金属材料
纳米材料
CeO2纳米棒
微波均相
光催化
inorganic non-metallic materials
nano-materials
CeO2 nanorods
microwave homogeneous synthesis
photocatalytic
