纳米氧化锰负载钛基电催化膜制备及处理含酚废水性能研究
收稿日期: 2018-02-16
修回日期: 2018-04-19
网络出版日期: 2018-05-11
基金资助
国家自然科学基金（No.21676200，No.21576208）、教育部创新团队发展计划（No.IRT-17R80）、天津科学支撑计划（No.17JCYBJC19800）、先进能源材料化学“111引智基地”（No.B12015）和天津市大学生创新创业项目资助（No.201510058083）
Preparations of Nano-Manganite Loaded Titanium Electocatalytic Membrane Electrode for Phenolic Wastewater Treatment
Received date: 2018-02-16
Revised date: 2018-04-19
Online published: 2018-05-11
关键词： 电催化膜反应器; MnOx/Ti膜电极; 锰氧化物; 含酚废水; 催化氧化
李乐 , 王虹 , 马荣花 , 惠洪森 , 梁小平 , 李建新 . 纳米氧化锰负载钛基电催化膜制备及处理含酚废水性能研究[J]. 电化学, 2018 , 24(4) : 309 -318 . DOI: 10.13208/j.electrochem.180216
Nano-manganese oxide loaded on titanium electrocatalytic membrane electrodes (nano-MnOx/Ti) were synthesized bysol-gel method using porous Ti membrane as a substrate and the manganese acetate as a raw material without releasing NOx. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Field-emission scanning electron microscopy (FESEM) were employed to characterize crystal form, valence state and surface morphology of nano-MnOx, respectively. Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and chronoamperometry (CA) were used to investigate the electrochemical properties of nano-MnOx electrode. The results indicated that the MnOx catalysts consisted of γ-MnO2 and Mn2O3 nanorods with the diameter of 50 nm, which distributed uniformly on the Ti membrane. The electrochemical performance and catalytic performance of the membrane electrode improved obviously after the loading of the catalyst. The formation of chemical bond between Ti and MnOx led a good stability of MnOx/Ti membrane electrode. The electrocatalytic membrane reactor (ECMR) was assmblied by using nanorods the MnOx/Ti membrane as an anode and a stainless steel mesh as a cathode for the phenolic wastewater treatment (10 mmol·L-1). It was found that the COD removal rate of ECMR was up to 95.1% at current density of 0.25 mA·cm-2and residence time of 15 min.
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