Surface Pourbaix diagrams of AgPd nanoalloys and its application in formate oxidation reaction

2021 ◽  
pp. 138465
Author(s):  
Zhen Li ◽  
Fuyi Chen ◽  
Weiqi Bian ◽  
Bo Kou ◽  
Qiao Wang ◽  
...  
Keyword(s):  
Oxidation Reaction ◽  
Pourbaix Diagrams ◽  
Formate Oxidation

Catalytic activity of palladium-doped silver dilute nanoalloys for formate oxidation from a theoretical perspective

2019 ◽  
Vol 21 (40) ◽  
pp. 22598-22610 ◽  
Author(s):  
Nan Zhang ◽  
Fuyi Chen ◽  
Longfei Guo
Keyword(s):  
Catalytic Activity ◽  
Oxidation Reaction ◽  
Theoretical Perspective ◽  
Single Atom ◽  
High Catalytic Activity ◽  
Formate Oxidation ◽  
First Time ◽  
Single Atom Alloys

We demonstrate for the first time that the Pd1Ag single-atom alloys exhibit a high catalytic activity for formate oxidation reaction.

Nanoalloying effects on the catalytic activity of the formate oxidation reaction over AgPd and AgCuPd aerogels

2019 ◽  
Vol 7 (27) ◽  
pp. 16122-16135 ◽  
Author(s):  
Qiao Wang ◽  
Fuyi Chen ◽  
Longfei Guo ◽  
Tao Jin ◽  
Huazhen Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxidation Reaction ◽  
Formate Oxidation

Nanoalloying effects and dealloying endow D-AgCuPd aerogels with significantly enhanced FOR activity compared to their monometallic, bimetallic and trimetallic counterparts.

Surface reconstruction of AgPd nanoalloy particles during the electrocatalytic formate oxidation reaction

Nanoscale ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 3469-3481 ◽  
Author(s):  
Longfei Guo ◽  
Fuyi Chen ◽  
Tao Jin ◽  
Huazhen Liu ◽  
Nan Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Surface Reconstruction ◽  
Oxidation Reaction ◽  
Surface Coverage ◽  
Formate Oxidation

Ag49Pd51 nanoalloys undergo surface reconstruction on graphene where Pd surface coverage increases from 51.87 to 62.42% during the FOR, and the catalytic activity increases from 2.32 to 6.03 A mg−1Pd.

Surface reconstruction of AgPdF and AgPd nanoalloys under the formate oxidation reaction

2021 ◽  
Author(s):  
Quan Tang ◽  
Fuyi Chen ◽  
Qiao Wang ◽  
Tao Jin ◽  
Longfei Guo ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Surface Reconstruction ◽  
Current Density ◽  
Retention Time ◽  
Oxidation Reaction ◽  
Formate Oxidation

The correlation between the surface reconstruction of AgPdF and AgPd nanoalloys and their catalytic activity and stability in FOR is examined. AgPdO is reconstructed to form AgPd, whilst AgPdF maintains a record retention time of up to 78 hours and a higher current density.

Component-Dependent Electrocatalytic Activity of Ultrathin PdRh Alloy Nanocrystals for the Formate Oxidation Reaction

2018 ◽  
Vol 7 (2) ◽  
pp. 2830-2836 ◽  
Author(s):  
Juan Bai ◽  
Qi Xue ◽  
Yue Zhao ◽  
Jia-Xing Jiang ◽  
Jing-Hui Zeng ◽  
...  
Keyword(s):  
Electrocatalytic Activity ◽  
Oxidation Reaction ◽  
Alloy Nanocrystals ◽  
Formate Oxidation

Alloying in inverse CeO2/Pd nanoparticles to enhance the electrocatalytic activity for the formate oxidation reaction

2019 ◽  
Vol 7 (40) ◽  
pp. 22996-23007 ◽  
Author(s):  
Quan Tang ◽  
Fuyi Chen ◽  
Tao Jin ◽  
Longfei Guo ◽  
Qiao Wang ◽  
...  
Keyword(s):  
Electrocatalytic Activity ◽  
Oxidation Reaction ◽  
Electronic Effect ◽  
Pd Nanoparticles ◽  
Pd Catalysts ◽  
Formate Oxidation

Inverse CeO2/Pd catalysts with Pd/Ce alloying enhanced FOR activity by the electronic effect of Ce and the oxophilic effect of CeO2.

Unexpectedly high stability and surface reconstruction of PdAuAg nanoparticles for formate oxidation electrocatalysis

Nanoscale ◽  
2020 ◽  
Vol 12 (21) ◽  
pp. 11659-11671 ◽  
Author(s):  
Bowei Pan ◽  
Fuyi Chen ◽  
Bo Kou ◽  
Junpeng Wang ◽  
Quan Tang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Surface Reconstruction ◽  
Oxidation Reaction ◽  
High Stability ◽  
Formate Oxidation

Pd3Au3Ag1 NPs on carbon nanotubes undergo a potential-driven surface reconstruction that improves the activity and durability for the electrocatalytic formate oxidation reaction.

Scanning Electron Microscope Study of Bacteria on Mineral Surfaces

1976 ◽  
Vol 34 ◽  
pp. 130-131
Author(s):  
V.K. Berry
Keyword(s):  
Oxidation Reaction ◽  
Electron Microscope Study ◽  
Elemental Sulfur ◽  
Thiobacillus Ferrooxidans ◽  
Physical Contact ◽  
Metal Sulfides ◽  
Low Grade ◽  
Mineral Surfaces ◽  
Mineral Surface ◽  
Scanning Electron Microscope Study

There are two strains of bacteria viz. Thiobacillus thiooxidansand Thiobacillus ferrooxidanswidely mentioned to play an important role in the leaching process of low-grade ores. Another strain used in this study is a thermophile and is designated Caldariella .These microorganisms are acidophilic chemosynthetic aerobic autotrophs and are capable of oxidizing many metal sulfides and elemental sulfur to sulfates and Fe2+ to Fe3+. The necessity of physical contact or attachment by bacteria to mineral surfaces during oxidation reaction has not been fairly established so far. Temple and Koehler reported that during oxidation of marcasite T. thiooxidanswere found concentrated on mineral surface. Schaeffer, et al. demonstrated that physical contact or attachment is essential for oxidation of sulfur.

NANOELECTROCATALYSTS BASED PALLADIUM FOR FUEL CELLS WITH DIRECT OXIDATION OF FORMIC ACID

2019 ◽  
Vol 6 (3) ◽  
pp. 104-107
Author(s):  
Marina Vladimirovna Lebedeva ◽  
Alexey Petrovich Antropov ◽  
Alexander Victorovich Ragutkin ◽  
Nicolay Andreevich Yashtulov
Keyword(s):  
Formic Acid ◽  
Palladium Nanoparticles ◽  
Oxidation Reaction ◽  
Electrode Materials ◽  
Formic Acid Oxidation ◽  
Energy Sources ◽  
Acid Oxidation ◽  
Direct Oxidation ◽  
Atomic Force ◽  
Formic Acid Oxidation Reaction

In paper electrode materials with palladium nanoparticles on polymer matrix substrates for energy sources have been formed. Nanocomposites were investigated by atomic force and scanning electron microscopy. The catalytic activity of formed electrodes in the formic acid oxidation reaction was evaluated by voltammetry method.

Impact Of Synthesis Route on the Water Oxidation Kinetics of Hematite Photoanodes

2020 ◽  
Author(s):  
Camilo A. Mesa ◽  
Ludmilla Steier ◽  
Benjamin Moss ◽  
Laia Francàs ◽  
James E. Thorne ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Reaction Kinetics ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Oxidation Reaction ◽  
Charge Accumulation ◽  
Optical Signals ◽  
Current Voltage ◽  
Voltage Performance ◽  
Kinetics Of

<p><i>Operando</i> spectroelectrochemical analysis is used to determine the water oxidation reaction kinetics for hematite photoanodes prepared using four different synthetic procedures. Whilst these photoanodes exhibit very different current / voltage performance, their underlying water oxidation kinetics are found to be almost invariant. Lower photoanode performance was found to correlate with the observation of optical signals indicative of charge accumulation in mid-gap oxygen vacancy states, indicating these states do not contribute directly to water oxidation.</p>

Sign in / Sign up

Export Citation Format

Share Document