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题名: Characterization and activity of TiO2/wAC composite photocatalyst prepared by acid catalyzed hydrolysis method
作者: Chen Xiao-Yun;  Liu Shou-Xin;  Chen Xi;  Sun Cheng-Lin
关键词: TiO2 ;  activated carbon ;  acid catalyzed hydrolysis ;  TiO2/AC composite photocatalyst ;  mechanism
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 2006-05-01
DOI: 10.3866/PKU.WHXB20060501
卷: 22, 期:5, 页:517-522
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: TiO2/AC (activated carbon) composite photocatalysts were prepared by acid catalyzed hydrolysis method followed by calcinations in N-2 atmosphere. Photocatalytic activity of TiO2/wAC (w: the mass fraction of AC, %) was investigated through the photocatalytic degradation of phenol, methyl orange, and Cr6+ in the present of TiO2/wAC. The separability of TiO2/AC was determined by gravity-sedimentation. XRD, DRS, FTIR, SEM, and N2 adsorption isotherm were used to characterize the crystal structure, spectra characteristics, and surface properties of the obtained catalysts. The results showed that TiO2/wAC catalysts with optimal AC content 5%(w) exhibited more higher activity than P-25 and TiO2, as well as good decantability, less activity lost after several runs and less sensitive to pH change. Result of DRS revealed no electronic change when AC was added. Better TiO2 distribution and less agglomeration can be achieved when optimal AC content adopted. Result of FTIR suggests that a conjugation effect was presented between the AC bulk and Ti-O bond. Suitable pollutant concentration environment and less agglomeration provided by AC was the main cause for the high activity of TiO2/5AC. The performance of the prepared TiO2/5AC catalyst revealed great practical potential in waste water treatment.
关键词[WOS]: TITANIUM-DIOXIDE ;  CARBON ;  FILMS
语种: 英语
WOS记录号: WOS:000237709200001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140299
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.NE Forestry Univ, Key Lab Biobased Mat Sci & Technol, Harbin 150040, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Chen Xiao-Yun,Liu Shou-Xin,Chen Xi,et al. Characterization and activity of TiO2/wAC composite photocatalyst prepared by acid catalyzed hydrolysis method[J]. ACTA PHYSICO-CHIMICA SINICA,2006,22(5):517-522.
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