Using amino-functionalized Fe3O4-WO3 nanoparticles for diazinon removal from synthetic and real water samples in presence of UV irradiation

Q Chemistry Journal of Advanced Oxidation Technologies Pub Date : 2017-01-01 DOI:10.1515/jaots-2016-0153

Azita Mohagheghian, Kobra Ayagh, K. Godini, M. Shirzad-Siboni

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引用次数: 9

Abstract

Abstract In this research, photocatalytic degradation of diazinon by amino-functionalized Fe3O4-WO3 nanoparticles under UV irradiation was investigated with variation of pH, nanocatalyst dose, initial diazinon concentration, different purging gases, H2O2 concentration, and type of organic compounds. Under optimal conditions: pH= 7, [Diazinon]0= 20 mg.L–1, nanocatalyst dosage= 0.25 g.L–1, H2O2= 5 mM, 99.23 % of the insecticide was removed after 120 min. A decrease was observed in the removal efficiency of diazinon in the presence of different purging gases and organic compounds. Based on the three kinetic models developed in this study, it was found that the removal of diazinon followed the first order kinetic. Also, application of the UV/amino-functionalized Fe3O4-WO3 nanoparticles both increased the performance and decreased electric power consumption. However, 86.17 % of diazinon in real water samples was removed under the optimized conditions. Furthermore, the photocatalytic activity was kept after five successive cycles.

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利用氨基功能化Fe3O4-WO3纳米颗粒在紫外线照射下去除合成水样和真实水样中的重氮肼

摘要本研究考察了氨基功能化Fe3O4-WO3纳米颗粒在紫外光照射下光催化降解重氮肼，考察了pH、纳米催化剂剂量、初始重氮肼浓度、不同净化气体、H2O2浓度和有机化合物类型的变化。在最佳条件下:pH= 7，[二嗪农]0= 20 mg。L-1，纳米催化剂用量= 0.25 g。L-1, H2O2= 5 mM, 120 min后，杀虫剂的去除率为99.23%。不同净化气体和有机物存在下，重氮嗪的去除率均有所下降。根据所建立的三种动力学模型，发现二嗪农的脱除符合一级动力学。此外，紫外/氨基功能化Fe3O4-WO3纳米颗粒的应用既提高了性能，又降低了电耗。在此条件下，实际水样中重氮肼的去除率为86.17%。此外，连续5次循环后，光催化活性仍保持不变。

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来源期刊

Journal of Advanced Oxidation Technologies 化学-物理化学

CiteScore

0.88

自引率

0.00%

发文量

审稿时长

1 months

期刊介绍： The Journal of advanced oxidation technologies (AOTs) has been providing an international forum that accepts papers describing basic research and practical applications of these technologies. The Journal has been publishing articles in the form of critical reviews and research papers focused on the science and engineering of AOTs for water, air and soil treatment. Due to the enormous progress in the applications of various chemical and bio-oxidation and reduction processes, the scope of the Journal is now expanded to include submission in these areas so that high quality submission from industry would also be considered for publication. Specifically, the Journal is soliciting submission in the following areas (alphabetical order): -Advanced Oxidation Nanotechnologies -Bio-Oxidation and Reduction Processes -Catalytic Oxidation -Chemical Oxidation and Reduction Processes -Electrochemical Oxidation -Electrohydraulic Discharge, Cavitation & Sonolysis -Electron Beam & Gamma Irradiation -New Photocatalytic Materials and processes -Non-Thermal Plasma -Ozone-based AOTs -Photochemical Degradation Processes -Sub- and Supercritical Water Oxidation -TiO2 Photocatalytic Redox Processes -UV- and Solar Light-based AOTs -Water-Energy (and Food) Nexus of AOTs