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题名: Synthesis, characterization and photo degradation application for dye-rhodamine B of nano-iron oxide/bentonite
作者: Liu Ying;  Li Yi-min;  Wen Li-hua;  Hou Ke-yong;  Li Hai-yang
关键词: rhodamine B ;  heterogeneous photo-degradation reaction ;  Fenton reaction ;  spectrophotometric method ;  UV-Visible spectrum
刊名: SPECTROSCOPY AND SPECTRAL ANALYSIS
发表日期: 2006-10-01
卷: 26, 期:10, 页:1939-1942
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Spectroscopy
研究领域[WOS]: Spectroscopy
英文摘要: The iron oxide/bentonite was prepared through a reaction of a solution of OH-Fe salt with bentonite clay dispersion. BET, XRD and HRTEM were used to study its surface area, microstructure, and average particle size. The iron oxide/bentonite nano composite was developed as the heterogeneous catalyst for successful discoloration and mineralization of dye rhodamine B. And the effects of solution pH, H2O2 molar concentration, catalyst loading and initial rhodamine B concentration were studied in detail by photometric method. The process of degradation was traced by UV-Visible spectrum. Besides, the comparison between the heterogeneous photo-Fenton process and homogeneous phota-Fenton process was performed. The result shows that, it has large surface area and mainly consists of high catalytic activity alpha-Fe2O3. The discoloration ratio is up to 97% and the CODCr removal ratio is 71% after 4 h in the presence of pH 3.0, 2.5 x 10(5) mol center dot L-1 rhodarnine B 100 mL, 0.3 g center dot L-1 catalyst, 10 mmol center dot L-1 H2O2 and UV. The rhodamine B degradating speed of heterogeneous photo-Fenton process is much faster than that of homogeneous photo-Fenton process. The catalyst can be reused after being treated.
关键词[WOS]: FENTON ;  CATALYSIS ;  OXIDATION ;  CLAY
语种: 英语
WOS记录号: WOS:000241751800041
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140155
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
3.Shaoxing Coll Arts & Sci, Dept Chem, Shaoxing 312000, Peoples R China
4.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Liu Ying,Li Yi-min,Wen Li-hua,et al. Synthesis, characterization and photo degradation application for dye-rhodamine B of nano-iron oxide/bentonite[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2006,26(10):1939-1942.
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