Experimental Design and Optimization of Triclosan and 2.8-Diclorodibenzeno-p-dioxina Degradation by the Fe/Nb2O5/UV System

被引：17

作者：

Fidelis, Michel Z. ^{[1
]}

Abreu, Eduardo ^{[1
]}

Dos Santos, Onelia A. A. ^{[2
]}

Chaves, Eduardo S. ^{[3
]}

Brackmann, Rodrigo ^{[4
]}

Dias, Daniele T. ^{[5
]}

Lenzi, Giane G. ^{[1
]}

机构：

[1] Univ Tecnol Fed Parana, Dept Engn Quim, Ave Monteiro Lobato,S-N Km 04, BR-84016210 Ponta Grossa, PR, Brazil

[2] Univ Estadual Maringa, Dept Engn Quim, Ave Colombo 5790, BR-87020900 Maringa, PR, Brazil

[3] Univ Fed Santa Catarina, Dept Quim, Campus Reitor Joao David Ferreira Lima, BR-88040900 Florianopolis, SC, Brazil

[4] Univ Tecnol Fed Parana, Dept Quim, Via Conhecimento,S-N Km 01, BR-85503390 Pato Branco, PR, Brazil

[5] Univ Tecnol Fed Parana, Dept Acad Fis, Ave Monteiro Lobato,S-N Km 04, BR-84016210 Pato Branco, PR, Brazil

来源：

CATALYSTS | 2019年 / 9卷 / 04期

关键词：

Fe; Nb2O5 immobilized catalyst; emerging pollutants; degradation; WATER TREATMENT PLANTS; PHOTOCATALYTIC DEGRADATION; TIO2; OXIDATION; REDUCTION; OXIDE; NANOPARTICLES; CATALYSTS; EFFICIENT; NB2O5;

D O I：

10.3390/catal9040343

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：

This study describes the experimental design and optimization of the photocatalytic reaction using the immobilized catalyst Fe/Nb2O5 in the degradation of Triclosan and 2.8-DCDD. The techniques employed to characterize the photocatalysts were: specific surface area, average pore volume, average pore diameter, photo-acoustic spectroscopy (PAS), X-ray diffraction (XRD), and scanning electron microscopy (SEM/EDS). The reaction parameters studied were pH, catalyst concentration, catalyst calcination temperature, and nominal metallic charge. The results indicated that the immobilized Fe/Nb2O5 catalysts were efficient in the degradation of Triclosan and 2.8-dichlorodibenzene-p-dioxin. The catalysts with nominal metal loading of 1.5% Fe calcined at 873 K showed the highest constant reaction rate and the lowest half-life 0.069 min(-1) and 10.04 min. Tests in different matrices indicated that the photocatalytic reaction using aqueous solution containing Cl- is faster when compared with the ultrapure water matrix.

引用

页数：18

共 42 条

[1] Carbon/nitrogen-doped TiO2: New synthesis route, characterization and application for phenol degradation [J].