Photocatalytic degradation of acridine dyes using anatase and rutile TiO2

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:101

Article

Zubieta, C. E.¹  Messina, P. V.^2,3  Schulz, P. C.^2,3 

[1] Univ Nacl Sur, IFISUR, RA-8000 Bahia Blanca, Buenos Aires, Argentina

[2] Univ Nacl Sur, Dept Quim, RA-8000 Bahia Blanca, Buenos Aires, Argentina

[3] Consejo Nacl Invest Cient & Tecn, INQUISUR, Bahia Blanca, Buenos Aires, Argentina

关键词: Titania;    Microemulsion;    Photodegradation;    Pollution;    Acridine dyes;    Adsorption;   

DOI  :  10.1016/j.jenvman.2012.02.014

来源: Elsevier

【 摘 要 】

The adsorption and photodegradation of acridine orange (AO) and acriflavine (AF) dyes on two mesoporous titania crystalline phases, anatase and rutile, were experimentally studied. Anatase and rutile were characterized by nitrogen adsorption, electron scanning and transmission microscopy, and X-ray diffraction. The adsorption capacity of rutile was higher than that of anatase, while the reverse is observed for photodegradation of both dyes. The adsorption of AF on both adsorbents was higher than that of AO, which was related with the smaller size of AF molecules compared with those of AO, therefore the access of AF to the adsorption sites is favored. (c) 2012 Published by Elsevier Ltd.

【 授权许可】

Free