摘要
以经过预处理的竹叶为模板合成具有仿生形态的CeO2材料,研究竹叶与硝酸铈质量比(MTC)及反应温度对沉积效果的影响。利用傅立叶变换红外光谱(FTIR)、场发射扫描电子显微镜(FESEM)、X射线衍射(XRD)、透射电子显微镜(TEM)、N2吸脱附等测试手段对样品进行表征。结果表明:当MTC为1:1时,在70℃下反应所得CeO2材料具有精确的分级多孔结构,而六次亚甲基四胺(HMT)作为沉淀剂能促使CeO2前驱体颗粒在模板表面的预组装。采用催化剂用量为0.2 g所合成的氧化铈材料对浓度为20 mg/L的100 mL酸性品红溶液进行脱色试验,在反应120 min后,其脱色率可达95%以上。
Biomorphic ceria materials were prepared using bamboo leaves as template. The effects of mass ratio of bamboo leaves to cerium nitrate and reaction temperature were investigated. Fourier transfer infrared spectroscopy （FTIR）, field emission scanning electron microscope （FESEM）, X-ray diffractometer （XRD）, transmission electron microscope （TEM） and N2 adsorption-desorption were used to characterize the sample. The results indicate that when the mass ratio of bamboo leaves to cerium nitrate is 1：1 and the reaction is carded out at 70 ℃, the CeO2 materials obtained have accurately hierarchical porous structure, and HMT as the precipitant can also promote CeO2 precursor particles pre-assembled on the surface of template. The CeO2 material synthesized with the catalyst amount of 0.2 g is used to decolorize 100 mL acid fuchsine solution with the fuchsine concentration of 20 mg/L. The decolorization rate is up to 95% after 120 min.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2012年第9期2565-2571,共7页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金资助项目(21071107
51002016)
江苏省油气储运重点实验室项目基金资助项目(CY0901)
苏州市环境功能材料重点实验室资助项目(SZS201008)
苏州市工业支撑项目(SYG201029)
江苏省研究生科研创新计划资助项目(CX10B-256Z)
关键词
仿生形态
分级多孔
氧化铈
脱色
biomorphic
hierarchical porous
ceria
decolorization
