Degradation of sulfamethazine using Fe3O4-Mn3O4/reduced graphene oxide hybrid as Fenton-like catalyst

被引：372
作者：
Wan, Zhong [1 ]
Wang, Jianlong [1 ,2 ,3 ]
机构：
[1] Tsinghua Univ, Collaborat Innovat Ctr Adv Nucl Energy Technol, INET, Beijing 100084, Peoples R China
[2] Tsinghua Univ, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China
[3] Tsinghua Univ, Beijing Key Lab Radioact Waste Treatment, Beijing 100084, Peoples R China
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2017年 / 324卷
基金：
中国国家自然科学基金;
关键词：
Fenton-like process; Hydroxyl radicals; Sulfamethazine; Reduced graphene oxide; Catalyst; PERSONAL CARE PRODUCTS; ACTIVATED PERSULFATE OXIDATION; WASTE-WATER TREATMENT; HYDROGEN-PEROXIDE; EFFICIENT DEGRADATION; FACILE SYNTHESIS; COMPOUNDS PHACS; ELECTRO-FENTON; ADSORPTION; REMOVAL;
D O I：
10.1016/j.jhazmat.2016.11.039
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this paper, Fe3O4-Mn3O4/reduced graphene oxide (RGO) hybrid was synthesized through polyol process and impregnation method and used as heterogeneous Fenton-like catalyst for degradation of sulfamethazine (SMT) in aqueous solution. The hybrid catalyst had higher catalytic efficiency compared with Fe3O4-Mn3O4 and Mn3O4 as catalyst for degradation of SMT The effects of pH value, H2O2 concentration, catalyst dosage, initial SMT concentration and temperature on SMT degradation were investigated. The removal efficiency of SMT was about 98% at following optimal conditions: pH = 3, T = 35 degrees C, Fe3O4/Mn3O4-RGO composites =0.5 g/L, H2O2 = 6 mM. The inhibitor experiments indicated that the main active species was hydroxyl radicals (center dot OH) on catalyst surface. At last, the possible catalytic mechanism was proposed. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：653 / 664
页数：12
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