Degradation, mineralization of bromoxynil pesticide by heterogeneous photocatalytic ozonation

被引：28
作者：
Maddila, Suresh [1 ]
Lavanya, Palakondu [2 ]
Jonnalagadda, Sreekanth B. [1 ]
机构：
[1] Univ KwaZulu Natal, Sch Chem & Phys, ZA-4000 Durban, South Africa
[2] JNT Univ, Annamacharya Inst Technol & Sci, Dept Chem, Tirupati 517502, Andhra Pradesh, India
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2015年 / 24卷
关键词：
Photocatalytic ozonation; Cs-TiO2; Bromoxynil pesticide; Degradation; Mineralization; LOADED METAL-OXIDES; WATER-TREATMENT; WASTE-WATER; TIO2; OZONE; DECHLORINATION; OXIDATION; CATALYSTS; NANOPARTICLES; EFFICIENCY;
D O I：
10.1016/j.jiec.2014.10.005
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The photocatalysts of Cs doped bare TiO2, 0.50 and 1.0 wt% were prepared by wet-impregnation method and characterized by XRD, SEM-EDX, TEM, BET, ICP, FTIR, and UV-DRS analyses. The degradation of bromoxynil was investigated under visible irradiation with ozone to compare the efficiency of these photoinduced advanced oxidation techniques. Photocatalysis with 1% Cs/TiO2 was yielded 100% degradation and mineralization of bromoxynil in 2 h at basic pH. The extent of degradation was confirmed by GC-MS. The oxidation products were identified by H-1 NMR and GC-MS spectral analyses. The catalyst is fully recoverable and reusable multiple times with no loss of activity. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：333 / 341
页数：9
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