Phthalocyanine/chitosan-TiO2 photocatalysts: Characterization and photocatalytic activity

被引：44
作者：
Hamdi, A. [1 ]
Boufi, S. [2 ]
Bouattour, S. [1 ]
机构：
[1] Univ Sfax, Fac Sci, LCI, Sfax, Tunisia
[2] Univ Sfax, Fac Sci, LMSE, Sfax, Tunisia
来源：
APPLIED SURFACE SCIENCE | 2015年 / 339卷
关键词：
Sol-gel processes; Raman and IR spectroscopy; Chitosan-TiO2; CHITOSAN; TIO2; ADSORPTION; ACID; DYE; PHTHALOCYANINES; SENSITIZATION; EFFICIENCY; MEMBRANES; REMOVAL;
D O I：
10.1016/j.apsusc.2015.02.102
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Chitosan (CS) was used as a template to prepare a hybrid chitosan-phthalocyanine-TiO2 (PC/CS-TiO2) photocatalyst at room temperature without any calcination treatment. The as-prepared hybrid photocatalyst (PC/CS-TiO2) was characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and UV-vis diffuse reflectance spectroscopy (DRS). The results of the photodegradation of aniline, used as a model pollutant, revealed that the hybrid photocatalyst (PC/CS-TiO2) exhibited a photocatalytic activity under visible-light irradiation. The enhanced activity of the hybrid catalyst is attributed to the cooperative role of the three components of the photocatalyst; chitosan as a template for the immobilization crystalline TiO2 nanoparticles, phthalocyanine that promote the light absorption in the visible range and TiO2 acting as an acceptor of electrons generated by the photons absorption to produce superoxide radicals. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：128 / 136
页数：9
相关论文
共 33 条
[1]   Characterization of drug-chitosan interaction by 1H NMR, FTIR and isothermal titration calorimetry [J].
Boonsongrit, Yaowalak ;
Mueller, Bernd W. ;
Mitrevej, Ampol .
EUROPEAN JOURNAL OF PHARMACEUTICS AND BIOPHARMACEUTICS, 2008, 69 (01) :388-395
[2]   Li-doped nanosized TiO2 powder with enhanced photocalatylic acivity under sunlight irradiation [J].
Bouattour, Soraa ;
Kallel, Wannes ;
Botelho do Rego, Ana Maria ;
Vieira Ferreira, L. F. ;
Machado, I. Ferreira ;
Boufi, Sami .
APPLIED ORGANOMETALLIC CHEMISTRY, 2010, 24 (10) :692-699
[3]   Photocatalytic activity of Li+-Rb+-Y3+ doped or codoped TiO2 under sunlight irradiation [J].
Bouattour, Soraa ;
Botelho do Rego, Ana Maria ;
Vieira Ferreira, Luis F. .
MATERIALS RESEARCH BULLETIN, 2010, 45 (07) :818-825
[4]   Enzymatic grafting of carboxyl groups on to chitosan - to confer on chitosan the property of a cationic dye adsorbent [J].
Chao, AC ;
Shyu, SS ;
Lin, YC ;
Mi, FL .
BIORESOURCE TECHNOLOGY, 2004, 91 (02) :157-162
[5]  
Chen X, 2001, J APPL POLYM SCI, V79, P1144
[6]   Adsorption of anionic dyes in acid solutions using chemically cross-linked chitosan beads [J].
Chiou, MS ;
Ho, PY ;
Li, HY .
DYES AND PIGMENTS, 2004, 60 (01) :69-84
[7]   Equilibrium and kinetic modeling of adsorption of reactive dye on cross-linked chitosan beads [J].
Chiou, MS ;
Li, HY .
JOURNAL OF HAZARDOUS MATERIALS, 2002, 93 (02) :233-248
[8]   Novel Chitosan-TiO2 Nanohybrid: Preparation, Characterization, Antibacterial, and Photocatalytic Properties [J].
Haldorai, Yuvaraj ;
Shim, Jae-Jin .
POLYMER COMPOSITES, 2014, 35 (02) :327-333
[9]   Li-Y doped and codoped TiO2 thin films: Enhancement of photocatalytic activity under visible light irradiation [J].
Hamden, Z. ;
Ferreira, D. P. ;
Vieira Ferreira, L. F. ;
Bouattour, S. .
CERAMICS INTERNATIONAL, 2014, 40 (02) :3227-3235
[10]   Bi-Y doped and co-doped TiO2 nanoparticles: Characterization and photocatalytic activity under visible light irradiation [J].
Hamdi, A. ;
Ferraria, A. M. ;
Botelho do Rego, A. M. ;
Ferreira, D. P. ;
Conceicao, D. S. ;
Vieira Ferreira, L. F. ;
Bouattour, S. .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2013, 380 :34-42
1234