Abstract:

With cobalt nitrate and ferrous sulfate as precursors, a heterogeneous catalyst of multi-walled carbon nanotubes loaded with cobalt-iron bimetals(Co_1.5Fe_1.5O₄@MWCNTs) was synthesized by one-step hydrothermal method. The synthesized catalyst was stable and had a single-phase cubic crystal structure by XRD and SEM analysis. The use of Co_1.5Fe_1.5O₄@MWCNTs to catalyze the degradation of phenol showed that a 50 mg/L phenol solution was treated for 40 min at a neutral pH, a catalyst mass concentration of 0.20 g/L, and a persulfate(PMS) concentration of 3.0 mmol/L, the degradation rate reached 97.92%.

Key words: phenol, peroxymonosulfate, Co_1.5Fe_1.5O₄@MWCNTs, heterogeneous catalysis

摘要：

以硝酸钴、硫酸亚铁为前驱体，通过一步水热法合成了多壁碳纳米管负载钴铁双金属氧化物的非均相催化剂Co_1.5Fe_1.5O₄@MWCNTs。对其进行的XRD、SEM表征结果表明，该催化剂组成稳定且具有单相立方晶型。使用Co_1.5Fe_1.5O₄@MWCNTs对苯酚进行催化降解实验，结果表明：在中性pH、催化剂质量浓度0.20 g/L、过一硫酸盐（PMS）浓度3.0 mmol/L条件下处理50 mg/L苯酚溶液40 min，对苯酚的降解率可达97.92%。

关键词: 苯酚, 过一硫酸盐, Co_1.5Fe_1.5O₄@MWCNTs, 非均相催化

CLC Number: 

• X703