文献类型：期刊文献

英文题名：Tunnel Structure Kx≈0.25IrO2 Catalyst Anchored on Three-Dimensional Ti Foam as an Efficient Anode for Sulpiride Degradation

作者：Sun, Wei[1];Zaman, Waqas Qamar[1];Cao, Li-Mei[1];Yang, Ji[1]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2017

卷号：247

起止页码：163

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20172803926722);WOS:【SCI-EXPANDED(收录号:WOS:000408582300018)】；

基金：This research is based on work supported by the National Natural Science Foundation of China (21177037 and 21277045). We thank beamline BL14W1 (Shanghai Synchrotron Radiation Facility) for providing the beam time.

语种：英文

外文关键词：PPCPs; Electrochemical Treatment; Tunnel Structure; OER; Energy Consumption

摘要：The electrochemical oxidation processes have been proven as an efficient and environment-friendly techniques to degrade the organic contaminants. However, higher energy consumption and lower efficiency restrict the commercial applications on large scale. The conventional viewpoint to design anodes for the electrochemical degradation applications is to avoid the OER occurrence. However, the OER not only plays a positive role in preventing anodic fouling, but also produces various activated oxygen species (O*, OH* and OOH*) to benefit oxidation of organic pollutants. Here, we demonstrate that a novel catalyst Kx approximate to 0.25IrO2 has a unique tunnel structure and d bands, when fixed on Ti foam to form a three dimensional (3D) architecture anode, can efficiently degrade the sulpiride both in acidic and neutral solution. It can achieve 61% mineralization in acidic environment, which is five times higher than that of IrO2 under the same condition and two times higher than that of performed Fenton degradation. This 3D architecture not only provides a large surface area but also escalates the mass transfer, which is a crucial factor for the SP degradation. In short, we demonstrate that the tunnel structure catalyst along with high OER activity not only provides an attractive degradation performance, but can reduce the cell potential to decrease the energy consumption. (C) 2017 Elsevier Ltd. All rights reserved.