期刊文献+

二次检索

题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

年份

学科

共找到1篇文章
< 1 >
每页显示 20 50 100
氧化铈纳米粒子光催化降解亚甲基蓝的动力学和机理(英文) 被引量:16
1
作者 h.r.pouretedal A.KADKHODAIE 《催化学报》 SCIE EI CAS CSCD 北大核心 2010年第11期1328-1334,共7页
CeO2 nanocrystals were synthesized by a simple precipitation method and calcination at 600℃.(NH4)2Ce(NO3)6 and ammonia were used as precursors.The CeO2 nanoparticles were characterized by X-ray diffraction,Fourier tr... CeO2 nanocrystals were synthesized by a simple precipitation method and calcination at 600℃.(NH4)2Ce(NO3)6 and ammonia were used as precursors.The CeO2 nanoparticles were characterized by X-ray diffraction,Fourier transform infrared spectroscopy,transmission electron microscopy,and N2 adsorption.The photodegradation of methylene blue catalyzed by CeO2 nanoparticles was studied under UV and sunlight irradiation.The highest degradation was obtained with 1.0 g/L CeO2 at pH 11 within 125 min.The pseudo first order rate constants of dye bleaching were calculated as 16.2×10-3 and 15.7×10-3 min-1 under UV and sunlight irradiation,respectively.The effect of iso-PrOH,iodide ion,and H2O2 was studied to predict the pathway of dye degradation.The obtained results indicate the effect of photogenerated holes in the degradation mechanism of the dye.Also,the photocatalytic activity of the prepared photocatalyst was studied in the presence of several negative ions. 展开更多
关键词 CERIA NANOPARTICLE PHOTODEGRADATION methylene blue PHOTOCATALYST KINETICS
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部