Photocatalytic decolourization of indigo carmine on 1,10-phenanthrolinium intercalated bentonite under UV-B and solar irradiation

被引:21
作者
Bentouami, Abdelhadi [1 ,2 ]
Ouali, Mohand Said [2 ]
De Menorval, Louis-Charles [3 ]
机构
[1] Univ Sci & Technol Oran M Boudiaf, Fac Sci, Dept Chim, Oran, Algeria
[2] Univ Mostaganem, Lab Valorisat Mat, Mostaganem, Algeria
[3] Univ Montpellier 2, ICG AIME UMR 5253, F-34095 Montpellier 05, France
关键词
Bentonite; Solar irradiation; Photo-decolourization; Indigo carmine; AZO DYES; TEXTILE DYE; WASTE-WATER; NANOCRYSTALLINE TIO2; AQUEOUS-SOLUTIONS; PILLARED CLAYS; DEGRADATION; ADSORPTION; OXIDATION; DECOLORIZATION;
D O I
10.1016/j.jphotochem.2010.04.002
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
In the present work, organophilic clay was prepared and characterized by XRD, FT-IR, TGA,C-13 MAS NMR and UV-vis DRS. The obtained material was investigated as photocatalyst on photo-decolourization of indigo carmine under UV-B and solar irradiation. The decolourization capacity of the obtained material against indigo carmine was very low. Besides, the kinetic photo-decolourization data under UV-B and solar irradiation fitted well the pseudo-first order and Langmuir-Hinshelwood kinetic models. The photodecolourization rate was found better under solar than UV-B irradiation. A total colour removal was obtained at natural pH after 160 min of solar irradiation of a 10 mg L-1 indigo carmine solution. The prepared material was used four times with practically the same decolourization efficiency. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:101 / 106
页数:6
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