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

doi:10.13208/j.electrochem.180216

电化学（中英文） ›› 2018, Vol. 24 ›› Issue (4): 309-318. doi: 10.13208/j.electrochem.180216

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

李乐，王虹^1,2*，马荣花¹，惠洪森¹，梁小平¹，李建新^1,3

1. 天津工业大学材料科学与工程学院，分离膜与膜过程国家重点实验室，天津300387；
2. 南开大学先进能源材料化学教育部重点实验室，天津300071；
3. 山东省生态纺织协同创新中心，山东青岛266071

收稿日期:2018-02-16 修回日期:2018-04-19 出版日期:2018-08-28 发布日期:2018-05-11
通讯作者: 王虹 E-mail:waho7808@163.com
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

LI Le¹, WANG Hong^1,2*, MA Rong-hua¹, HUI Hong-sen¹, LIANG Xiao-ping¹, LI Jian-xin^1,3

1.State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China; 2.Key Laboratory of Advanced Energy Materials Chemistry, Ministry of Education, Nankai University, Tianjin 300071, China; 3.Collaborative Innovation Center for Eco-Textiles of Shandong Province, 308 Ningxia Road, Qingdao 266071, Shandong, China

Received:2018-02-16 Revised:2018-04-19 Published:2018-08-28 Online:2018-05-11
Contact: WANG Hong E-mail:waho7808@163.com

摘要/Abstract

摘要： 以多孔钛膜为基膜，醋酸锰为锰源，采用溶胶凝胶法制备出负载纳米氧化锰的钛基电催化膜（nano-MnO_x/Ti膜）. 运用X射线衍射(XRD)、 X射线光电子能谱(XPS)、场发射扫描电子显微镜(FESEM)、循环伏安法(CV)、交流阻抗法（EIS）和计时电流法(CA)等测试手段，对MnO_x/Ti膜电极的微观形貌、晶型、电化学性能等进行表征. 结果表明：所得催化剂是由直径为50 nm的γ-MnO₂和Mn₂O₃纳米棒所组成，且均匀分布于Ti膜上，负载催化剂后钛膜电极电化学性能和催化性能明显提高，催化剂与基体之间键合的形成提高其稳定性. 以棒状nano-MnO_x/Ti膜电极为阳极构建电催化膜反应器(ECMR)处理含酚废水，当苯酚溶液浓度为10 mmol·L^-1，电流密度为0.25mA·cm^-2、停留时间为15 min时，COD去除率可达95.1%.

关键词: 电催化膜反应器, MnO_x/Ti膜电极, 锰氧化物, 含酚废水, 催化氧化

Abstract:

Nano-manganese oxide loaded on titanium electrocatalytic membrane electrodes (nano-MnO_x/Ti) were synthesized bysol-gel method using porous Ti membrane as a substrate and the manganese acetate as a raw material without releasing NO_x. 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-MnO_x, respectively. Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and chronoamperometry (CA) were used to investigate the electrochemical properties of nano-MnO_x electrode. The results indicated that the MnO_x 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 MnO_x led a good stability of MnO_x/Ti membrane electrode. The electrocatalytic membrane reactor (ECMR) was assmblied by using nanorods the MnO_x/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.

Key words: electrocatalytic membrane reactor, MnO_x/Ti membrane, manganese oxide, phenolic wastewater treatment, catalytic oxidation

中图分类号:

O646

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（中英文）, 2018, 24(4): 309-318.

LI Le, WANG Hong, MA Rong-hua, HUI Hong-sen, LIANG Xiao-ping, LI Jian-xin. Preparations of Nano-Manganite Loaded Titanium Electocatalytic Membrane Electrode for Phenolic Wastewater Treatment[J]. Journal of Electrochemistry, 2018, 24(4): 309-318.

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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

Preparations of Nano-Manganite Loaded Titanium Electocatalytic Membrane Electrode for Phenolic Wastewater Treatment

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