One-step, seedless wet-chemical synthesis of gold@palladium nanoflowers supported on reduced graphene oxide with enhanced electrocatalytic properties

2014 ◽  
Vol 2 (43) ◽  
pp. 18177-18183 ◽  
Author(s):  
Shan-Shan Li ◽  
Ai-Jun Wang ◽  
Yuan-Yuan Hu ◽  
Ke-Ming Fang ◽  
Jian-Rong Chen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Chemical Synthesis ◽  
Alkaline Media ◽  
Chemical Route ◽  
Wet Chemical Synthesis ◽  
Reduced Graphene ◽  
One Step ◽  
Wet Chemical ◽  
Wet Chemical Route

A simple, seedless wet-chemical route was designed for synthesis of well-dispersed Au@Pd nanoflowers on rGO. The as-prepared nanocomposites exhibited enhanced catalytic activity and better stability for ORR and EG oxidation in alkaline media.

scholarly journals Highly porous palladium nanodendrites: wet-chemical synthesis, electron tomography and catalytic activity

2019 ◽  
Vol 48 (11) ◽  
pp. 3758-3767 ◽  
Author(s):  
Stefanos Mourdikoudis ◽  
Verónica Montes-García ◽  
Sergio Rodal-Cedeira ◽  
Naomi Winckelmans ◽  
Ignacio Pérez-Juste ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Chemical Synthesis ◽  
Electron Tomography ◽  
Simple Procedure ◽  
Wet Chemical Synthesis ◽  
One Step ◽  
Wet Chemical ◽  
Highly Porous

A simple procedure to obtain highly porous hydrophilic palladium nanodendrites in one step is described.

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.

Star-shaped Pd@Pt core–shell catalysts supported on reduced graphene oxide with superior electrocatalytic performance

2014 ◽  
Vol 2 (19) ◽  
pp. 6976-6986 ◽  
Author(s):  
Youngmin Kim ◽  
Yuseong Noh ◽  
Eun Ja Lim ◽  
Seonhwa Lee ◽  
Sung Mook Choi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Methanol Oxidation ◽  
Alkaline Media ◽  
Core Shell ◽  
One Pot ◽  
Electrocatalytic Performance ◽  
Reduced Graphene ◽  
Reduction Approach

A surfactantless, one-pot reduction approach for Pd@Pt core–shell nano-stars on reduced graphene oxide with enhanced catalytic activity and stability for methanol oxidation in alkaline media.

Preparation of PdxAuy bimetallic nanostructures with controllable morphologies supported on reduced graphene oxide nanosheets and wrapped in a polypyrrole layer

RSC Advances ◽  
2015 ◽  
Vol 5 (107) ◽  
pp. 87831-87837 ◽  
Author(s):  
Tongjie Yao ◽  
Quan Zuo ◽  
Hao Wang ◽  
Jie Wu ◽  
Xiao Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Graphene Oxide Nanosheets ◽  
Step Method ◽  
Reduced Graphene ◽  
One Step ◽  
Good Catalytic Activity ◽  
Alloy Nanostructures ◽  
Bimetallic Nanostructures

A one-step method to prepare reduced graphene oxide/PdxAuy/polypyrrole composites with good catalytic activity was introduced. The morphologies of alloy nanostructures could turn to be spherical, coral-like and porous cluster-like.

Surfactant-free synthesis of reduced graphene oxide supported porous PtAu alloyed nanoflowers with improved catalytic activity

2015 ◽  
Vol 3 (10) ◽  
pp. 5321-5327 ◽  
Author(s):  
Pei Song ◽  
Li-Li He ◽  
Ai-Jun Wang ◽  
Li-Ping Mei ◽  
Shu-Xian Zhong ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Reduction Method ◽  
One Pot ◽  
Nitrophenol Reduction ◽  
Reduced Graphene ◽  
Wet Chemical ◽  
Co Reduction

A simple, facile one-pot wet-chemical co-reduction method was developed for synthesis of porous PtAu-nanoflowers/rGO with the assistance of p-aminopyridine. The as-prepared nanocomposites displayed excellent catalytic activity for 4-nitrophenol reduction.

Ultrasmall Ru2P nanoparticles on graphene: a highly efficient hydrogen evolution reaction electrocatalyst in both acidic and alkaline media

2018 ◽  
Vol 54 (27) ◽  
pp. 3343-3346 ◽  
Author(s):  
Tingting Liu ◽  
Shuo Wang ◽  
Qiuju Zhang ◽  
Liang Chen ◽  
Weihua Hu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Media ◽  
Graphene Oxide Nanosheets ◽  
Reduced Graphene ◽  
Alkaline Conditions ◽  
Acidic And Alkaline Media

A Pt-free catalyst of ultrasmall Ru2P nanoparticles on reduced graphene oxide nanosheets (Ru2P/RGO-20) shows remarkable HER catalytic activity under acidic and alkaline conditions, respectively, both superior to those of commercial Pt/C.

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