Wei Zhou1, Xiaoxiao Meng2, Jihui Gao3, Akram N Alshawabkeh4. 1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001 PR China; Department of Civil and Environmental Engineering, Northeastern University, Boston, MA, 02115, USA. 2. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001 PR China. 3. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001 PR China. Electronic address: gaojh@hit.edu.cn. 4. Department of Civil and Environmental Engineering, Northeastern University, Boston, MA, 02115, USA. Electronic address: a.alshawabkeh@neu.edu.
Abstract
The electrochemical production of hydrogen peroxide (H2O2) by 2-electron oxygen reduction reaction (ORR) is an attractive alternative to the present complex anthraquinone process. The objective of this paper is to provide a state-of-the-arts review of the most important aspects of this process. First, recent advances in H2O2 production are reviewed and the advantages of H2O2 electrogeneration via 2-electron ORR are highlighted. Second, the selectivity of the ORR pathway towards H2O2 formation as well as the development process of H2O2 production are presented. The cathode characteristics are the decisive factors of H2O2 production. Thus the focus is shifted to the introduction of commonly used carbon cathodes and their modification methods, including the introduction of other active carbon materials, hetero-atoms doping (i.e., O, N, F, B, and P) and decoration with metal oxides. Cathode stability is evaluated due to its significance for long-term application. Effects of various operational parameters, such as electrode potential/current density, supporting electrolyte, electrolyte pH, temperature, dissolved oxygen, and current mode on H2O2 production are then discussed. Additionally, the environmental application of electrogenerated H2O2 on aqueous and gaseous contaminants removal, including dyes, pesticides, herbicides, phenolic compounds, drugs, VOCs, SO2, NO, and Hg0, are described. Finally, a brief conclusion about the recent progress achieved in H2O2 electrogeneration via 2-electron ORR and an outlook on future research challenges are proposed.
The electron class="Chemical">chemical production of hydrogen peroxide (H2O2) by 2-electron oxygen reduction reaction (ORR) is an attractive alternative to the present complex anthraquinone process. The objective of this paper is to provide a state-of-the-arts review of the most important aspects of this process. First, recent advances in H2O2 production are reviewed and the advantages of H2O2 electrogeneration via 2-electron ORR are highlighted. Second, the selectivity of the ORR pathway towards H2O2 formation as well as the development process of H2O2 production are presented. The cathode characteristics are the decisive factors of H2O2 production. Thus the focus is shifted to the introduction of commonly used carbon cathodes and their modification methods, including the introduction of other active carbon materials, hetero-atoms doping (i.e., O, N, F, B, and P) and decoration with metal oxides. Cathode stability is evaluated due to its significance for long-term application. Effects of various operational parameters, such as electrode potential/current density, supporting electrolyte, electrolyte pH, temperature, dissolved oxygen, and current mode on H2O2 production are then discussed. Additionally, the environmental application of electrogenerated H2O2 on aqueous and gaseous contaminants removal, including dyes, pesticides, herbicides, phenoliccompounds, drugs, VOCs, SO2, NO, and Hg0, are described. Finally, a brief conclusion about the recent progress achieved in H2O2 electrogeneration via 2-electron ORR and an outlook on future research challenges are proposed.
Authors: Ioannis Katsounaros; Wolfgang B Schneider; Josef C Meier; Udo Benedikt; P Ulrich Biedermann; Alexander A Auer; Karl J J Mayrhofer Journal: Phys Chem Chem Phys Date: 2012-04-19 Impact factor: 3.676
Authors: Nelly Flores; Abdoulaye Thiam; Rosa María Rodríguez; Francesc Centellas; Pere Lluís Cabot; José Antonio Garrido; Enric Brillas; Ignasi Sirés Journal: Environ Sci Pollut Res Int Date: 2016-01-14 Impact factor: 4.223
Authors: Paulo Jorge Marques Cordeiro-Junior; Justo Lobato Bajo; Marcos Roberto de Vasconcelos Lanza; Manuel Andrés Rodrigo Rodrigo Journal: Ind Eng Chem Res Date: 2022-07-13 Impact factor: 4.326