Galvanic-displacement modification of Pd deposits with ultralow amounts of platinum and the electrocatalytic properties of the mixed catalyst

2015 ◽  
Vol 25 (4) ◽  
pp. 293-295 ◽  
Author(s):  
Boris I. Podlovchenko ◽  
Tatyana D. Gladysheva ◽  
Alexander Yu. Filatov
Keyword(s):  
Galvanic Displacement ◽  
Electrocatalytic Properties ◽  
Mixed Catalyst

Formation and electrocatalytic properties of Pd deposits on Mo obtained by galvanic displacement

2012 ◽  
Vol 48 (4) ◽  
pp. 467-473 ◽  
Author(s):  
V. V. Kuznetsov ◽  
K. V. Kavyrshina ◽  
B. I. Podlovchenko
Keyword(s):  
Galvanic Displacement ◽  
Electrocatalytic Properties

scholarly journals PdAgPt Corner-Satellite Nanocrystals in Well-Controlled Morphologies and the Structure-Related Electrocatalytic Properties

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 340
Author(s):  
Hehe Qian ◽  
Jianzhou Wu ◽  
Yongsheng Guo ◽  
Wenjun Fang
Keyword(s):  
Temperature Regulation ◽  
Growth Process ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Direct Oxidation ◽  
Galvanic Displacement ◽  
Electrocatalytic Properties ◽  
Hollow Structures ◽  
Structure Sensitive ◽  
Seed Mediated

The functions of heterogeneous metallic nanocrystals (HMNCs) can be undoubtedly tuned by controlling their morphologies and compositions. As a less-studied kind of HMNCs, corner-satellite multi-metallic nanocrystals (CSMNCs) have great research value in structure-related electrocatalytic performance. In this work, PdAgPt corner-satellite nanocrystals with well-controlled morphologies and compositions have been developed by temperature regulation of a seed-mediated growth process. Through the seed-mediated growth, the morphology of PdAgPt products evolves from Pd@Ag cubes to PdAgPt corner-satellite cubes, and eventually to truncated hollow octahedra, as a result of the expansion of {111} facets in AgPt satellites. The growth of AgPt satellites exclusively on the corners of central cubes is realized with the joint help of Ag shell and moderate bromide, and hollow structures form only at higher reaction temperatures on account of galvanic displacement promoted by the Pd core. In view of the different performances of Pd and Pt toward formic acid oxidation (FAO), this structure-sensitive reaction is chosen to measure electrocatalytic properties of PdAgPt HMNCs. It is proven that PdAgPt CSMNCs display greatly improved activity toward FAO in direct oxidation pathway. In addition, with the help of AgPt heterogeneous shells, all PdAgPt HMNCs exhibit better durability than Pd cubes and commercial Pt.

Effect of ionizing radiation on the kinetics of hydrogenation on the Ni-MgO mixed catalyst

1982 ◽  
Vol 47 (7) ◽  
pp. 1780-1786 ◽  
Author(s):  
Rostislav Kudláček ◽  
Jan Lokoč
Keyword(s):  
Experimental Data ◽  
Activation Energy ◽  
Liquid Phase ◽  
Ionizing Radiation ◽  
Oxide Catalyst ◽  
Absorbed Dose ◽  
Hydrogenation Rate ◽  
Solution Composition ◽  
Mixed Catalyst ◽  
Kinetics Of

The effect of gamma pre-irradiation of the mixed nickel-magnesium oxide catalyst on the kinetics of hydrogenation of maleic acid in the liquid phase has been studied. The changes of the hydrogenation rate are compared with the changes of the adsorbed amount of the acid and with the changes of the solution composition, activation energy, and absorbed dose of the ionizing radiation. From this comparison and from the interpretation of the experimental data it can be deduced that two types of centers can be distinguished on the surface of the catalyst under study, namely the sorption centres for the acid and hydrogen and the reaction centres.

First electrochemical synthesis of mesoporous RhNi alloy films for an alkali-mediated hydrogen evolution reaction

2021 ◽  
Vol 9 (5) ◽  
pp. 2754-2763
Author(s):  
Kenya Kani ◽  
Hyunsoo Lim ◽  
Andrew E. Whitten ◽  
Kathleen Wood ◽  
Anya J. E. Yago ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrochemical Synthesis ◽  
Polymeric Micelles ◽  
Deposition Method ◽  
Alloy Films ◽  
Electrocatalytic Properties ◽  
Self Assembled

The mesoporous RhNi alloy films are synthesized by controlling the concentration of Rh precursor, applied potentials, and pH via the electrochemical co-deposition method with self-assembled polymeric micelles templates for enhancing electrocatalytic properties.

Fe3O4 Nanoplates Anchored on the Ti3C2Tx MXene with Enhanced Pseudocapacitive and Electrocatalytic Properties

Nanoscale ◽  
2021 ◽  
Author(s):  
Lu Zhang ◽  
Zhuo Wang ◽  
Wenxiao Chen ◽  
Ruiwen Yuan ◽  
Ke Zhan ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Electrochemical Energy Storage ◽  
Great Promise ◽  
Two Dimensional ◽  
Electrocatalytic Properties ◽  
Electrochemical Energy

Ti3C2Tx as a novel member of the two-dimensional material family holds great promise for electrochemical energy storage and catalysis, however, the electrochemical performance of Ti3C2Tx is largely limited by the...

scholarly journals AgNPs decorated 3D bionic silicon nanograss arrays pattern with high-density hot-spots for SERS sensing via green galvanic displacement without additives

RSC Advances ◽  
2021 ◽  
Vol 11 (44) ◽  
pp. 27152-27159
Author(s):  
Li Wang ◽  
Jian Huang ◽  
Mei-Juan Su ◽  
Jin-Di Wu ◽  
Weisheng Liu
Keyword(s):  
Hot Spots ◽  
High Density ◽  
Galvanic Displacement ◽  
Si Substrate ◽  
Plasma Interaction ◽  
Organic Reagents ◽  
Vls Growth ◽  
Sers Sensing

The Si nanograss arrays are directly grown on Si substrate via catalyst-assisted VLS growth and subsequent plasma interaction. AgNPs were rapidly immobilized on Si nanograss arrays for SERS sensing, without any organic reagents and additives.

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