Electron Transfer Number Control of the Oxygen Reduction Reaction on Nitrogen-Doped Reduced-Graphene Oxides Using Experimental Design Strategies

2013 ◽  
Vol 160 (9) ◽  
pp. H547-H552 ◽  
Author(s):  
Chien Liang Liu ◽  
Chi-Chang Hu ◽  
Sheng-Hui Wu ◽  
Tzu-Ho Wu
Keyword(s):  
Electron Transfer ◽  
Experimental Design ◽  
Oxygen Reduction Reaction ◽  
Reduction Reaction ◽  
Design Strategies ◽  
Transfer Number ◽  
Graphene Oxides ◽  
Nitrogen Doped ◽  
Reduced Graphene ◽  
Electron Transfer Number

Synthesis and Characterization of Nitrogen Doped Reduced Graphene Oxide Based Cobalt-ZIF-8 Catalysts for Oxygen Reduction Reaction

2021 ◽  
Vol MA2021-02 (36) ◽  
pp. 1024-1024
Author(s):  
Hassan Shirzadi Jahromi ◽  
Shivi Saxena ◽  
Sudharsan Sridhar ◽  
Muralidhar K Ghantasala ◽  
Ramakrishna Guda ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
Synthesis And Characterization ◽  
Nitrogen Doped ◽  
Reduced Graphene

Synthesis and Characterization of Nitrogen Doped Reduced Graphene Oxide Based Cobalt-ZIF-8 Catalysts for Oxygen Reduction Reaction

2021 ◽  
Vol 104 (8) ◽  
pp. 59-71
Author(s):  
Hassan Shirzadi Jahromi ◽  
Shivi Saxena ◽  
Sudharsan Sridhar ◽  
Muralidhar K Ghantasala ◽  
Ramakrishna Guda ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
Synthesis And Characterization ◽  
Nitrogen Doped ◽  
Reduced Graphene

The oxygen reduction reaction of two electron transfer of nitrogen-doped carbon in the electro-Fenton system

2020 ◽  
Vol 44 (38) ◽  
pp. 16584-16593
Author(s):  
Jiayi Feng ◽  
Yonggang Zhang
Keyword(s):  
Electron Transfer ◽  
Oxygen Reduction Reaction ◽  
Cathode Material ◽  
Degradation Mechanism ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
System P ◽  
Nitrogen Doped Carbon ◽  
Fenton System ◽  
Ti Mesh

Degradation mechanism of ORR for the NGO-Ti mesh cathode material in the EF process.

scholarly journals Mechanisms of Two-Electron and Four-Electron Electrochemical Oxygen Reduction Reactions at Nitrogen-Doped Reduced Graphene Oxide

2019 ◽  
Author(s):  
Hyo Won Kim ◽  
Vanessa Jane Bukas ◽  
Hun Park ◽  
Sojung Park ◽  
Kyle M. Diederichsen ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Photoelectron Spectroscopy ◽  
Active Sites ◽  
Isotope Effects ◽  
Underlying Mechanism ◽  
Reduction Reaction ◽  
Graphene Oxides ◽  
Nitrogen Doped ◽  
General Chemical ◽  
Reduced Graphene

Doped carbon-based systems have been extensively studied over the past decade as active electrocatalysts for both the two-electron (2e-) and four-electron (4e-) oxygen reduction reaction (ORR). However, the mechanisms for ORR are generally poorly understood. Here we report an extensive experimental and first-principles theoretical study of the ORR at nitrogen-doped reduced graphene oxides (NrGO). We synthesize three distinct NrGO catalysts and investigate their chemical and structural properties in detail via X-ray photoelectron spectroscopy, infrared and Raman spectroscopy, high-resolution transmission electron microscopy and thin-film electrical conductivity. ORR experiments include the pH dependences of 2e- versus 4e- ORR selectivity, ORR onset potentials, Tafel slopes and H/D kinetic isotope effects. These experiments show very different ORR behavior for the three catalysts, both in terms of selectivity and the underlying mechanism which proceeds either via coupled proton-electron transfers (CPETs) or non-CPETs. Reasonable structural models developed from DFT rationalize this behavior. The key determinant between CPET vs. non-CPET mechanisms is the electron density at the Fermi level under operating ORR conditions. Regardless of the reaction mechanism or electrolyte pH, however, we identify the ORR active sites as sp2 carbons that are located next to oxide regions. This assignment highlights the importance of oxygen functional groups, while details of (modest) N-doping may still affect the overall catalytic activity, and likely also the selectivity, by modifying the general chemical environment around the active site.

Nitrogen-doped cobalt phosphate@nanocarbon hybrids for efficient electrocatalytic oxygen reduction

2016 ◽  
Vol 9 (8) ◽  
pp. 2563-2570 ◽  
Author(s):  
Tianhua Zhou ◽  
Yonghua Du ◽  
Shengming Yin ◽  
Xuezeng Tian ◽  
Hongbin Yang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Electron Transfer Pathway ◽  
Nitrogen Doped ◽  
Long Term Stability ◽  
Electrocatalytic Oxygen Reduction

A nitrogen-doped Co3(PO4)2@nanocarbon hybrid was developed as an oxygen reduction reaction (ORR) catalyst and exhibits outstanding catalytic performance with high activity, long-term stability and a four-electron transfer pathway.

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