Highly-branched mesoporous Au–Pd–Pt trimetallic nanoflowers blooming on reduced graphene oxide as an oxygen reduction electrocatalyst

2016 ◽  
Vol 52 (56) ◽  
pp. 8659-8662 ◽  
Author(s):  
Liang Huang ◽  
Yujie Han ◽  
Shaojun Dong
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
One Pot ◽  
Reduced Graphene ◽  
Surfactant Assisted

Highly-branched mesoporous Au–Pd–Pt trimetallic nanoflowers blooming on rGO are synthesized via a one-pot two surfactant-assisted approach.

One pot in situ synthesis of nano Au–Pd core-shells embedded on reduced graphene oxide for the oxygen reduction reaction

2021 ◽  
Vol 264 ◽  
pp. 114924
Author(s):  
Periyasami Gnanaprakasam ◽  
Aruchamy Gowrisankar ◽  
Shanmugam Senthilkumar ◽  
Arumugam Murugadoss ◽  
Thangavelu Selvaraju ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
In Situ Synthesis ◽  
One Pot ◽  
Reduced Graphene

scholarly journals Facilely synthesized nitrogen-doped reduced graphene oxide functionalized with copper ions as electrocatalyst for oxygen reduction

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Nadia Garino ◽  
Juqin Zeng ◽  
Micaela Castellino ◽  
Adriano Sacco ◽  
Francesca Risplendi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Active Sites ◽  
Copper Ions ◽  
Theoretical Calculations ◽  
Hydrogen Electrode ◽  
One Pot ◽  
Nitrogen Doped ◽  
Reduced Graphene

AbstractNitrogen-doped reduced graphene oxide is successfully synthesized and functionalized with hydroxylated copper ions via one-pot microwave-assisted route. The presence of cationic Cu coordinated to the graphene layer is fully elucidated through a set of experimental characterizations and theoretical calculations. Thanks to the presence of these hydroxyl-coordinated Cu2+ active sites, the proposed material shows good electrocatalytic performance for the oxygen reduction reaction, as evidenced by an electron transfer number of almost 4 and by high onset and half-wave potentials of 0.91 V and 0.78 V vs. the reversible hydrogen electrode, respectively. In addition, the N-doped Cu-functionalized graphene displays a superior current retention with respect to a commercial Pt/C catalyst during the stability test, implying its potential implementation in high-performance fuel cells and metal-air batteries.

scholarly journals Synthetic tethered silver nanoparticles on reduced graphene oxide for alkaline oxygen reduction catalysis

2021 ◽  
Vol 56 (11) ◽  
pp. 6966-6976
Author(s):  
Henry R. Tinker ◽  
Malavika A. Bhide ◽  
Emanuele Magliocca ◽  
Thomas S. Miller ◽  
Caroline E. Knapp
Keyword(s):  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Catalytic Activity ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Supported Catalysts ◽  
Reduction Reaction ◽  
One Pot ◽  
Reduced Graphene ◽  
Alkaline Environments

AbstractThere is currently an enormous drive to move away from the use of Pt group metals in catalysis, particularly for fuel cells, because of their increasing rarity and cost. Simultaneously, there have been advances in the application of graphene supported nanoparticular catalysts. However, these Pt-free, graphene supported catalysts can be complex to produce, show poor catalytic activity and degrade quickly due to particle agglomeration or isolation. Herein, we report a one-pot synthesis of silver nanoparticles (NPs) tethered to a reduced graphene oxide (rGO) template via organic linkages. This is one of the few silver precursor formations that have been combined with graphene oxide (GO) to simultaneously establish linkage binding sites, reduce GO and yield tethered nanoparticles. These materials are shown to efficiently catalyze the oxygen reduction reaction in alkaline environments, with aminoethanol linkages to 21.55 ± 2.88 nm Ag particles exhibiting the highest catalytic activity via the four-electron pathway. This method, therefore, offers a straightforward route to produce effective catalysts from inexpensive precursors, which could be developed further for significant industrial application. Graphical abstract

One-pot synthesis of B-doped three-dimensional reduced graphene oxide via supercritical fluid for oxygen reduction reaction

2015 ◽  
Vol 17 (6) ◽  
pp. 3552-3560 ◽  
Author(s):  
Yazhou Zhou ◽  
Clive Hsu Yen ◽  
Shaofang Fu ◽  
Guohai Yang ◽  
Chengzhou Zhu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Supercritical Fluid ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
One Pot ◽  
One Pot Synthesis ◽  
Reduced Graphene

B-doped 3D reduced graphene synthesize from a one-pot supercritical fluid technique is an excellent electrocatalyst for oxygen reduction reaction.

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