Facile Synthesis of a Carbon Nitride/Reduced Graphene Oxide/Nickel Hydroxide Nanocomposite for Oxygen Reduction in Alkaline Media

2017 ◽  
Vol 4 (5) ◽  
pp. 997-1001 ◽  
Author(s):  
Mona Amiri ◽  
Suresh K. Konda ◽  
Aicheng Chen
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Nickel Hydroxide ◽  
Carbon Nitride ◽  
Alkaline Media ◽  
Facile Synthesis ◽  
Reduced Graphene

Co3O4 Nanoparticles-Modified α-MnO2 Nanorods Supported on Reduced Graphene Oxide as Cathode Catalyst for Oxygen Reduction Reaction in Alkaline Media

NANO ◽  
2016 ◽  
Vol 11 (11) ◽  
pp. 1650126 ◽  
Author(s):  
GuanHua Jin ◽  
Suqin Liu ◽  
Yaomin Li ◽  
Yang Guo ◽  
Zhiying Ding
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
X Ray ◽  
Reduced Graphene

Development of efficient electrocatalysts for the oxygen reduction reaction (ORR) remains a key issue for the commercialization of metal-air batteries. In this study, the novel structured Co3O4 nanoparticles-modified [Formula: see text]-MnO2 nanorods supported on reduced graphene oxide (Co3O4-MnO2/rGO) were synthesized with varying amounts of [Formula: see text]-MnO2 via a facile two-step hydrothermal method. The relationship between the physical properties and the electrochemical results was investigated using X-ray diffraction spectrum, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, cyclic voltammograms, electrochemical impedance spectroscopy and rotating disk electrode. The as-prepared Co3O4–MnO2 nanohybrid exhibits enhanced catalytic activity for ORR under alkaline condition compared with MnO2/rGO and Co3O4/rGO. Furthermore, it mainly favors a direct 4e-reaction pathway for ORR, which is attributed to the well-designed structure, the synergistic effect between Co3O4 and [Formula: see text]-MnO2, and the covalent coupling between the Co3O4-MnO2 and reduced graphene oxide. The role of Co3O4 in Co3O4–MnO2 hybrid for catalyzing ORR also has been illustrated by varying the mass ratio of Co3O4 and MnO2, which reveals that the Co3O4–MnO2 with the ratio of 1:1 has better catalytic activity.

A facile one-pot synthesis of carbon nitride dots–reduced graphene oxide nanocomposites for simultaneous enhanced detecting of dopamine and uric acid

The Analyst ◽  
2016 ◽  
Vol 141 (15) ◽  
pp. 4757-4765 ◽  
Author(s):  
Ziyin Yang ◽  
Xiaohui Zheng ◽  
Zhi Li ◽  
Jianbin Zheng
Keyword(s):  
Uric Acid ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Carbon Nitride ◽  
Electrochemical Determination ◽  
Facile Synthesis ◽  
One Pot ◽  
One Pot Synthesis ◽  
Reduced Graphene

In this study, we described the facile synthesis of carbon nitride dots–reduced graphene oxide nanocomposites (CNDs–rGO) and their application for the enhanced electrochemical determination of dopamine (DA) and uric acid (UA).

scholarly journals Fabrication of polyoxometalate-modified palladium–nickel/reduced graphene oxide alloy catalysts for enhanced oxygen reduction reaction activity

RSC Advances ◽  
2021 ◽  
Vol 11 (62) ◽  
pp. 39118-39129
Author(s):  
Fereshteh Dehghani Sanij ◽  
Prabhuraj Balakrishnan ◽  
Huaneng Su ◽  
Lindiwe Khotseng ◽  
Qian Xu
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Oxygen Reduction Reaction Activity ◽  
Reduced Graphene ◽  
Alloy Catalysts

A novel nanocatalyst, polyoxometalate-modified palladium–nickel/reduced graphene oxide (Pd8Ni2/rGO-POM), is prepared and served as an effective ORR nanomaterial in alkaline media.

A three-dimensional Mn3O4 network supported on a nitrogenated graphene electrocatalyst for efficient oxygen reduction reaction in alkaline media

2014 ◽  
Vol 2 (35) ◽  
pp. 14493-14501 ◽  
Author(s):  
Santosh Kumar Bikkarolla ◽  
Fengjiao Yu ◽  
Wuzong Zhou ◽  
Paul Joseph ◽  
Peter Cumpson ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Alkaline Medium ◽  
High Performance ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Reduced Graphene

A 3D hierarchical Mn3O4 nanoflake structure supported on nitrogenated reduced graphene oxide (NrGO), with excellent oxygen reduction in alkaline medium, was developed by electrodeposition. High performance is attributed to poor nanoflake crystallinity and strong nanoflake–NrGO coupling.

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