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肖玲,博士朱华跃等的论文在APPLIED SURFACE SCIENCE 刊出
发布时间:2013-05-20 11:05:02     发布者:yz     浏览次数:

标题:CdS nanocrystals/TiO2/crosslinked chitosan composite: Facile preparation, characterization and adsorption-photocatalytic properties作者:Zhu, Huayue; Jiang, Ru; Xiao, Ling;Liu, Li; Cao, Chunhua; Zeng, Guangming

来源出版物:APPLIED SURFACE SCIENCE 卷:273 页:661-669 DOI:10.1016/j.apsusc.2013.02.106 出版年:MAY 15 2013

摘要:CdS nanocrystals deposited on TiO2/crosslinked chitosan composite (CdS/TiO2/CSC) were prepared in an attempt to photocatalyze decolorization of water soluble azo dye in aqueous solution under simulated solar light irradiation. CdS/TiO2/CSC was characterized by X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), and scanning electron microscopy (SEM). The characterization results proved that CdS nanocrystals has successfully been deposited on/in TiO2/crosslinked chitosan composite. The adsorption ability of CdS/TiO2/CSC was approximately 2.66 mg methyl orange (a typical water soluble azo dye) per gram. The photocatalytic decolorization of methyl orange solution reached 99.1% by CdS/TiO2/CSC after simulated solar light irradiation for 210 min. Kinetics analysis indicated that photocatalytic decolorization of methyl orange solution by CdS/TiO2/CSC obeyed first-order kinetic Langmuir-Hinshelwood mechanism (R-2 > 0.997). CdS/TiO2/CSC exhibited enhanced photocatalytic activity under simulated solar light irradiation compared with photocatalysts reported before and the photocatalytic activity of CdS/TiO2/CSC maintained at 89.0% of initial decolorization rate after five batch reactions. The presence of NO3- accelerated the decolorization of methyl orange solution by CdS/TiO2/CSC, while SO42- and Cl- had an inhibitory effect on the decolorization of methyl orange. Therefore, present experimental results indicated to assess the applicability of CdS/TiO2/CSC as a suitable and promising photocatalyst for effective decolorization treatment of dye-containing effluents.

入藏号:WOS:000317581700097

文献类型:Article

语种:English

作者关键词:Adsorption, Photocatalysis, Azo dye, CdS, TiO2

扩展关键词:VISIBLE-LIGHT IRRADIATION; AZO-DYE; NANOCOMPOSITE FILMS; AQUEOUS-SOLUTION; DEGRADATION; DECOLORIZATION; WATER; TIO2; UV; KINETICS

通讯作者地址:Xiao, Ling; Luojia Mt Wuchang, Wuhan 430072, Hubei Province, Peoples R China

电子邮件地址:xiaoling9119@yahoo.cn

地址:

[Zhu, Huayue; Xiao, Ling; Liu, Li; Cao, Chunhua] Wuhan Univ, Key Lab Biomass Resource Chem & Environm Biotechn, Colledge Resource & Environm Sci, Wuhan 430072, Hubei, Peoples R China.

[Zhu, Huayue; Jiang, Ru] Taizhou Univ, Lab Resource Utilizat & Pollut Control, Coll Life Sci, Taizhou 318000, Zhejiang, Peoples R China.

[Zeng, Guangming] HunanUniv, Minist Educ, Key Lab *Environm* Biol & Pollut Control,Changsha410082,Hunan, Peoples RChina.

研究方向:Chemistry; Materials Science; Physics

ISSN:0169-4332

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