Sulfur doped reduced graphene oxides with enhanced catalytic activity for oxygen reduction via molten salt redox-sulfidation

2016 ◽  
Vol 18 (48) ◽  
pp. 32653-32657 ◽  
Author(s):  
Yuxing Gu ◽  
Zhigang Chen ◽  
Juanjuan Tang ◽  
Wei Xiao ◽  
Xuhui Mao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Molten Salt ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Graphene Oxides ◽  
Molten Carbonates ◽  
Reduced Graphene ◽  
Reduced Graphene Oxides ◽  
Co Doped

A facile redox-sulfidation reaction between sulfate containing molten carbonates and reduced graphene oxides (rGOs) was used to prepare sulfur and sulfur–cobalt co-doped rGOs with enhanced electrocatalytic activity.

Direct observation of enhanced plasmon-driven catalytic reaction activity of Au nanoparticles supported on reduced graphene oxides by SERS

2015 ◽  
Vol 17 (15) ◽  
pp. 10176-10181 ◽  
Author(s):  
Xiu Liang ◽  
Tingting You ◽  
Dapeng Liu ◽  
Xiufeng Lang ◽  
Enzhong Tan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Direct Observation ◽  
Catalytic Reaction ◽  
Au Nanoparticles ◽  
Graphene Oxides ◽  
Au Nps ◽  
Reduced Graphene ◽  
Reduced Graphene Oxides

Compared with Au NPs, Au/rGO exhibited an enhanced catalytic activity in the reduction from 4-nitrobenzenethiol (4-NBT) to p,p′-dimercaptoazobenzene (DMAB) during systematic SERS experiments.

scholarly journals Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts

2021 ◽  
Vol 22 (22) ◽  
pp. 12300
Author(s):  
Su-Jeong Bak ◽  
Sun-I Kim ◽  
Su-yeong Lim ◽  
Taehyo Kim ◽  
Se-Hun Kwon ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Pt Nanoparticles ◽  
Graphene Oxides ◽  
Highly Efficient ◽  
Surface Areas ◽  
Reduced Graphene ◽  
High Metal ◽  
Oxygen Reduction Catalysts ◽  
Reduced Graphene Oxides ◽  
Reduction Catalysts

We demonstrated highly efficient oxygen reduction catalysts composed of uniform Pt nanoparticles on small, reduced graphene oxides (srGO). The reduced graphene oxide (rGO) size was controlled by applying ultrasonication, and the resultant srGO enabled the morphological control of the Pt nanoparticles. The prepared catalysts provided efficient surface reactions and exhibited large surface areas and high metal dispersions. The resulting Pt/srGO samples exhibited excellent oxygen reduction performance and high stability over 1000 cycles of accelerated durability tests, especially the sample treated with 2 h of sonication. Detailed investigations of the structural and electrochemical properties of the resulting catalysts suggested that both the chemical functionality and electrical conductivity of these samples greatly influence their enhanced oxygen reduction efficiency.

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