Enhanced and Selective Degradation of Pollutants over Cyclodextrin/TiO2 under Visible Light Irradiation

被引：30

作者：

Zhang, Xu ^{[1
]}

Li, Xuankun ^{[1
]}

Deng, Nansheng ^{[1
]}

机构：

[1] Wuhan Univ, Sch Resources & Environm Sci, Wuhan 430079, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2012年 / 51卷 / 02期

关键词：

PHOTOCATALYTIC DEGRADATION; BETA-CYCLODEXTRIN; PHENOLIC-COMPOUNDS; DYE POLLUTANTS; TIO2; SURFACE; INCLUSION; COMPLEXES; PHOTODEGRADATION; NANOPARTICLES;

D O I：

10.1021/ie201694v

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The photocatalytic performance of cyclodextrin modified TiO2 (TiO2/beta-CD) on the degradation of rhodamine B and bisphenol A (BPA) was studied in this work. The interactions between beta-CD and TiO2 varied as the synthesis method changes. When applying TiO2/beta-CD synthesized from photoinduced self-assembly method as photocatalyst, the initial visible light (lambda >= 420 nm) degradation rates R-0 of rhodamine B and BPA increased by 4.6 and 3.2 times respectively. The TiO2/beta-CD hybrid material synthesized from adsorption method only showed enhancement in dye pollutants degradation. The reactivity of TiO2/beta-CD under visible light was correlated with the specific surface area of unmodified semiconductor. The mechanism for the enhanced and selective degradation of pollutants over TiO2/beta-CD was also proposed in this work.

引用

页码：704 / 709

页数：6

共 38 条

[1] Narrow-band irradiation of a homologous series of chlorophenols on TiO2:: Charge-transfer complex formation and reactivity [J].

Agrios, AG ;

Gray, KA ;

Weitz, E .

LANGMUIR, 2004, 20 (14) :5911-5917

[2] Photocatalytic transformation of 2,4,5-trichlorophenol on TiO2 under sub-band-gap illumination [J].

Agrios, AG ;

Gray, KA ;

Weitz, E .

LANGMUIR, 2003, 19 (04) :1402-1409

[3] Inclusion complexes of PBN-type nitrone spin traps and their superoxide spin adducts with cyclodextrin derivatives: Parallel determination of the association constants by NMR titrations and 2D-EPR simulations [J].

Bardelang, D ;

Rockenbauer, A ;

Karoui, H ;

Finet, JP ;

Tordo, P .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (20) :10521-10530

[4] α-phenyl-N-tert-butylnitrone-type derivatives bound to β-cyclodextrins:: Syntheses, thermokinetics of self-inclusion and application to superoxide spin-trapping [J].

Bardelang, David ;

Charles, Laurence ;

Finet, Jean-Pierre ;

Jicsinszky, Laszlo ;

Karoui, Hakim ;

Marque, Sylvain R. A. ;

Monnier, Valerie ;

Rockenbauer, Antal ;

Rosas, Roseline ;

Tordo, Paul .

CHEMISTRY-A EUROPEAN JOURNAL, 2007, 13 (33) :9344-9354

[5] An Efficient Dye-Sensitized Solar Cell with an Organic Sensitizer Encapsulated in a Cyclodextrin Cavity [J].

Choi, Hyunbong ;

Kang, Sang Ook ;

Ko, Jaejung ;

Gao, Guohua ;

Kang, Hong Seok ;

Kang, Moon-Sung ;

Nazeeruddin, Md. K. ;

Graetzel, Michael .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (32) :5938-5941

[6] Light-induced charge separation and redox chemistry at the surface of TiO2/host-guest hybrid nanoparticles [J].

Dimitrijevic, NM ;

Rajh, T ;

Saponjic, ZV ;

de la Garza, L ;

Tiede, DM .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (26) :9105-9110

[7] Photo-oxidation of polyhydroxyl molecules on TiO2 surfaces:: From hole scavenging to light-induced self-assembly of TiO2-cyclodextrin wires [J].

Du, Mao-Hua ;

Feng, Jun ;

Zhang, S. B. .

PHYSICAL REVIEW LETTERS, 2007, 98 (06)

[8] Functional supramolecular ruthenium cyclodextrin dyes for nanocrystalline solar cells [J].

Faiz, Jonathan ;

Philippopoulos, Athanassios I. ;

Kontos, Athanassios G. ;

Falaras, Polycarpos ;

Pikramenou, Zoe .

ADVANCED FUNCTIONAL MATERIALS, 2007, 17 (01) :54-58

[9] Self-assembly of photoactive TiO2-cyclodextrin wires [J].

Feng, J ;

Miedaner, A ;

Ahrenlkiel, P ;

Himmel, ME ;

Curtis, C ;

Ginley, D .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (43) :14968-14969

[10] Methylene Blue Encapsulation in Cucurbit[7]uril: Laser Flash Photolysis and Near-IR Luminescence Studies of the Interaction with Oxygen [J].

Gonzalez-Bejar, Maria ;

Montes-Navajas, Pedro ;

Garcia, Hermenegildo ;

Scaiano, J. C. .

LANGMUIR, 2009, 25 (18) :10490-10494

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