Modulating the surface segregation of PdCuRu nanocrystals for enhanced all-pH hydrogen evolution electrocatalysis

2019 ◽  
Vol 7 (35) ◽  
pp. 20151-20157 ◽  
Author(s):  
Menggang Li ◽  
Mingchuan Luo ◽  
Zhonghong Xia ◽  
Yong Yang ◽  
Yarong Huang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
High Performance ◽  
Surface Segregation ◽  
Core Shell ◽  
Ph Values

Core–shell PdCuRu trimetallic nanocrystals with a Pd-rich shell can be obtained by leveraging controlled surface segregation, and high-performance HER catalytic activity finally was achieved at all pH values.

Synthesis of hierarchical MoSe2 nanolayers on sodium sulfide crystals for electrocatalytic hydrogen evolution

CrystEngComm ◽  
2021 ◽  
Author(s):  
Xiaoshuang Chen ◽  
Meina Ju ◽  
Kun Song ◽  
Guoli Chen ◽  
Rui Yang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
High Performance ◽  
Sodium Sulfide ◽  
Hydrogen Generation ◽  
Clean Energy

Hydrogen generation via water electroreduction is a pivotal portion of exploiting clean-energy skills. Nevertheless, developing a low price and high-performance catalytic activity substance to take the place of expensively precious...

High Performance Sn@Pt/C and Sn@Pt/NG (C= Vulcan, NG= N-doped graphene) Core-Shell Nanostructures for the Hydrogen Evolution and Oxidation Reactions in Acid Media

2020 ◽  
Vol MA2020-01 (37) ◽  
pp. 1563-1563
Author(s):  
G. Hernández-Vázquez ◽  
S. Dessources ◽  
Ivonne Liliana Alonso-Lemus ◽  
Beatriz Escobar-Morales ◽  
F.J. Rodríguez-Varela
Keyword(s):  
Hydrogen Evolution ◽  
High Performance ◽  
Core Shell ◽  
Oxidation Reactions ◽  
Acid Media ◽  
Shell Nanostructures ◽  
Doped Graphene

Towards rational design of core–shell catalytic nanoreactor with high performance catalytic hydrogenation of levulinic acid

2016 ◽  
Vol 6 (13) ◽  
pp. 5102-5115 ◽  
Author(s):  
Biplab Banerjee ◽  
Ramana Singuru ◽  
Sudipta K. Kundu ◽  
Karnekanti Dhanalaxmi ◽  
Linyi Bai ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Hydrogenation ◽  
Levulinic Acid ◽  
High Performance ◽  
Rational Design ◽  
Core Shell ◽  
High Catalytic Activity

Core–shell catalytic nanoreactor was designed, exhibiting high catalytic activity for levulinic acid hydrogenation.

Templated-preparation of a three-dimensional molybdenum phosphide sponge as a high performance electrode for hydrogen evolution

2016 ◽  
Vol 4 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Chen Deng ◽  
Fei Ding ◽  
Xinyuan Li ◽  
Yaofang Guo ◽  
Wei Ni ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
High Performance ◽  
Three Dimensional ◽  
Molybdenum Phosphide ◽  
Binder Free

A sponge-shaped three-dimensional MoP (3D MoP) electrocatalyst is prepared and used as a binder-free electrode for the HER, exhibiting promising catalytic activity.

scholarly journals Surface Modifications of 2D-Ti3C2O2 by Nonmetal Doping for Obtaining High Hydrogen Evolution Reaction Activity: A Computational Approach

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 161
Author(s):  
Fangtao Li ◽  
Xiaoxu Wang ◽  
Rongming Wang
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
High Performance ◽  
Hydrogen Adsorption ◽  
Low Cost ◽  
Level Shift ◽  
High Hydrogen ◽  
Catalytic Active Sites

As a typical two-dimensional (2D) MXene, Ti3C2O2 has been considered as a potential material for high-performance hydrogen evolution reaction (HER) catalyst, due to its anticorrosion and hydrophilic surface. However, it is still a challenge to improve the Ti3C2O2 surficial HER catalytic activity. In this work, we investigated the HER activity of Ti3C2O2 after the surface was doped with S, Se, and Te by the first principles method. The results indicated that the HER activity of Ti3C2O2 is improved after being doped with S, Se, Te because the Gibbs free energy of hydrogen adsorption (ΔGH) is increased from −2.19 eV to 0.08 eV. Furthermore, we also found that the ΔGH of Ti3C2O2 increased from 0.182 eV to 0.08 eV with the doping concentration varied from 5.5% to 16.7%. The HER catalytic activity improvement of Ti3C2O2 is attributed to the local crystal structure distortion in catalytic active sites and Fermi level shift leads to the p-d orbital hybridization. Our results pave a new avenue for preparing a low-cost and high performance HER catalyst.

Adaptive kinetic Monte Carlo simulations of surface segregation in PdAu nanoparticles

Nanoscale ◽  
2019 ◽  
Vol 11 (21) ◽  
pp. 10524-10535 ◽  
Author(s):  
Lei Li ◽  
Xinyu Li ◽  
Zhiyao Duan ◽  
Randall J. Meyer ◽  
Rob Carr ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Catalytic Activity ◽  
Monte Carlo Method ◽  
Surface Segregation ◽  
Bimetallic Nanoparticles ◽  
Kinetic Monte Carlo ◽  
Core Shell ◽  
Kinetic Monte Carlo Method ◽  
Kinetic Monte Carlo Simulations ◽  
Pdau Nanoparticles

Surface segregation in bimetallic nanoparticles is critically important for their catalytic activity. Here, we use the adaptive kinetic Monte Carlo method to model the segregation dynamics in PdAu NPs over experimentally relevant time scales and demonstrate thermodynamically unfavorable Au@Pd core–shell and alloy NPs can be kinetically trapped at low temperature.

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