中空含锰四氧化三铁纳米催化剂的制备及其催化过氧化氢降解苯酚废水的研究  

Preparation of hollow manganese-containing Fe3O4 nano-catalyst and its catalytic activity for hydrogen peroxide degradation of phenol wastewater

作　　者：张权 侯永江[1] 国洁[1] 王文涛 ZHANG Quan;HOU Yong-jiang;GUO Jie;WANG Wen-tao(School of Environmental Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China)

机构地区：[1]河北科技大学环境科学与工程学院

出　　处：《应用化工》2019年第12期2914-2918,2923,共6页Applied Chemical Industry

基　　金：河北省自然科学基金(B2018208188)

摘　　要：以N,N-二甲基甲酰胺、高锰酸钾、四水合氯化亚铁、十六烷基三甲基溴化铵为主要原料,采用水相置换法制备出中空含锰四氧化三铁纳米催化剂Fe3O4-Mn,研究催化剂用量、pH值、温度、过氧化氢用量对于催化降解苯酚的影响。结果表明,对250 mL浓度100 mg/L的PhOH模拟废水,当催化剂Fe 3O 4-Mn用量0.15 g、pH=3、20℃、H2O2用量2.5 mL,反应时间25 min时,催化降解苯酚效果最好,PhOH去除率可达93.13%,其反应符合准二级吸附动力学。N,N- dimethylformamide (DMF),potassium permanganate,ferrous chloride tetrahydrate,cetyltrimethylammonium bromide (CTAB) as the main raw material.Hollow manganese-containing Fe3O4 nanocatalyst were synthesized by aqueous phase replacement.The effects of catalyst Fe3O4-Mn dosage,pH value,temperature and hydrogen peroxide dosage on catalytic degradation of phenol were investigated.The result showed that as 250 mL concentration of 100 mg/L PhOH simulated wastewater,when the catalyst Fe 3O 4-Mn is used in an amount of 0.15 g,pH=3,20 ℃,H2O2 dosage is 2.5 mL,and reaction time is 25 min ,the catalytic degradation of phenol was the best,PhOH removal rate was up to 93.13%,and the reaction conforms to quasi-secondary adsorption kinetic.

关 键 词：中空含锰四氧化三铁 催化降解 苯酚 吸附动力学 

分 类 号：TQ11[化学工程—无机化工] TQ13