Acta Phys. -Chim. Sin. ›› 2017, Vol. 33 ›› Issue (1): 198-210.doi: 10.3866/PKU.WHXB201609191

• REVIEW • Previous Articles     Next Articles

Recent Progress on Palladium-Based Oxygen Reduction Reaction Electrodes for Water Treatment

Meng SUN1,3,Jing-Hong LI2,*()   

  1. 1 Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
    2 Department of Chemistry, Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Tsinghua University, Beijing 100084, P. R. China
    3 University of Chinese Academy of Sciences, Beijing 100049, P. R. China
  • Received:2016-07-18 Published:2016-12-29
  • Contact: Jing-Hong LI E-mail:jhli@mail.tsinghua.edu.cn
  • Supported by:
    National Key Research and Development Program of China(2016YFA0203101);National Key Basic Researc Program of China(2013CB934004);National Natural Science Foundation of China(51572139)

Abstract:

Developing highly efficient electrode catalysts with the four-electron oxygen reduction pathway has remained a research hotspot in fuel cell research. However, the pursuit of novel electrode catalysts possessing the specific two-electron reduction route for water treatment is challenging. In this review, we focus on recent progress in electrocatalytic treatment of refractory pollutants in water by palladium (Pd)-based noble metal electrodes. We highlight:(i) the degradation and mineralization of organic pollutants through electrocatalytic oxidation derived from the combination of Fe2+ and H2O2, which can be in-situ synthesized by Pd based electrodes; (ii) electrocatalytic reduction transformation from toxic organic pollutants and inorganic salts to harmless products by Pd-based electrodes; and (iii) removal of heavy metals by redox conversion via Pd-based electrodes. The future opportunities and prospects of applying noble metal nanocatalysts in water treatment are discussed.

Key words: Electrocatalysis, Oxygen reduction, Electrode material, Water treatment

MSC2000: 

  • O646