Generation of sulfate radicals by supported ruthenium catalyst for phenol oxidation in water

被引：8
作者：
Anbia, Mansoor [1 ]
Rezaie, Marzie [1 ]
机构：
[1] Iran Univ Sci & Technol, Res Lab Nanoporous Mat, Fac Chem, Farjam St, Tehran 1684613114, Iran
来源：
RESEARCH ON CHEMICAL INTERMEDIATES | 2017年 / 43卷 / 01期
关键词：
RuO2/Fe3O4@nSiO(2)@mSiO(2) mesoporous catalyst; Peroxymonosulfate (PMS); Advanced oxidation processes (AOPs); Phenol degradation; Magnetic separation; WET AIR OXIDATION; ORGANIC CONTAMINANTS; HYDROGEN-PEROXIDE; LOW-TEMPERATURE; WASTE-WATER; ACETIC-ACID; DEGRADATION; COBALT; OXIDES; PEROXYMONOSULFATE;
D O I：
10.1007/s11164-016-2618-4
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this study we report the preparation of RuO2/Fe3O4@nSiO(2)@mSiO(2) core-shell powder mesoporous catalyst for heterogeneous oxidation of phenol by peroxymonosulfate (PMS) as oxidant. The properties of this supported catalyst were characterized by SEM-EDS (scanning electron microscopy-energy dispersive X-ray spectroscopy), XRD (powder X-ray diffraction), TEM (transmission electron microscopy), and nitrogen adsorption-desorption. It is found that using ruthenium oxide-based catalyst is highly effective in activating PMS for related sulfate radicals. The effects of catalyst loading, phenol concentration, PMS concentration, reaction temperature, and reusability of the as-prepared catalyst on phenol degradation were investigated. In RuO2/Fe3O4@nSiO(2)@mSiO(2) mesoporous catalyst, Oxone (PMS) was effectively activated and 100 % phenol degradation occurred in 40 min. The magnetic RuO2/Fe3O4@nSiO(2)@mSiO(2) catalyst was facility separated from the solution by an external magnetic field. To regenerate the deactivated catalyst and improve its catalytic properties, three different methods involving annealing in air, washing with water, and applying ultrasonics were used. The catalyst was recovered thoroughly by heat treatment.
引用
收藏
页码：245 / 257
页数：13
相关论文
共 34 条
[1]   Adsorption of phenolic compounds from aqueous solutions using functionalized SBA-15 as a nano-sorbent [J].
Anbia, M. ;
Amirmahmoodi, S. .
SCIENTIA IRANICA, 2011, 18 (03) :446-452
[2]   Adsorption of phenolic compounds from aqueous solutions using carbon nanoporous adsorbent coated with polymer [J].
Anbia, Mansoor ;
Ghaffari, Arezoo .
APPLIED SURFACE SCIENCE, 2009, 255 (23) :9487-9492
[3]   Transition metal/UV-based advanced oxidation technologies for water decontamination [J].
Anipsitakis, GP ;
Dionysiou, DD .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 54 (03) :155-163
[4]   Degradation of organic contaminants in water with sulfate radicals generated by the conjunction of peroxymonosulfate with cobalt [J].
Anipsitakis, GP ;
Dionysiou, DD .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2003, 37 (20) :4790-4797
[5]   Cobalt-mediated activation of peroxymonosulfate and sulfate radical attack on phenolic compounds. Implications of chloride ions [J].
Anipsitakis, GP ;
Dionysiou, DD ;
Gonzalez, MA .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2006, 40 (03) :1000-1007
[6]   Radical generation by the interaction of transition metals with common oxidants [J].
Anipsitakis, GP ;
Dionysiou, DD .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2004, 38 (13) :3705-3712
[7]   Catalytic wet peroxide oxidation over mixed (Al-Fe) pillared clays [J].
Barrault, J ;
Abdellaoui, M ;
Bouchoule, C ;
Majesté, A ;
Tatibouët, JM ;
Louloudi, A ;
Papayannakos, N ;
Gangas, NH .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2000, 27 (04) :L225-L230
[8]   Removal of herbicide diuron and thermal degradation products under Catalytic Wet Air Oxidation conditions [J].
Carrier, M. ;
Besson, M. ;
Guillard, C. ;
Gonze, E. .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 91 (1-2) :275-283
[9]   Pesticide chemical oxidation: state-of-the-art [J].
Chiron, S ;
Fernandez-Alba, A ;
Rodriguez, A ;
Garcia-Calvo, E .
WATER RESEARCH, 2000, 34 (02) :366-377
[10]   Low-temperature iron-modified cobalt oxide system Part 2. Catalytic oxidation of phenol in aqueous phase [J].
Christoskova, S ;
Stoyanova, M ;
Georgieva, M .
APPLIED CATALYSIS A-GENERAL, 2001, 208 (1-2) :243-249
1234