High-index faceted Pt-Ru alloy concave nanocubes with enhancing ethanol and CO electro-oxidation

2021 ◽  
pp. 139266
Author(s):  
Lu Wei ◽  
Feng Liu ◽  
Xin Jiang ◽  
Yu-Han Yang ◽  
Tian Sheng ◽  
...  
Keyword(s):  
High Index ◽  
Electro Oxidation

The in situ etching assisted synthesis of Pt–Fe–Mn ternary alloys with high-index facets as efficient catalysts for electro-oxidation reactions

Nanoscale ◽  
2019 ◽  
Vol 11 (18) ◽  
pp. 9061-9075 ◽  
Author(s):  
Congli Qin ◽  
Aixin Fan ◽  
Xin Zhang ◽  
Xiaoping Dai ◽  
Hui Sun ◽  
...  
Keyword(s):  
High Index ◽  
Ternary Alloys ◽  
Oxidation Reactions ◽  
Electro Oxidation ◽  
Novel Strategy

A novel strategy for significantly enhancing electro-oxidation reactions based on the reconstruction of Pt-based alloys with HIFs is demonstrated.

Shape regulation of high-index facet nanoparticles by dealloying

Science ◽  
2019 ◽  
Vol 365 (6458) ◽  
pp. 1159-1163 ◽  
Author(s):  
Liliang Huang ◽  
Mohan Liu ◽  
Haixin Lin ◽  
Yaobin Xu ◽  
Jinsong Wu ◽  
...  
Keyword(s):  
Trace Elements ◽  
High Index ◽  
Solution Phase ◽  
Carbon Catalyst ◽  
Initial Alloy ◽  
Ligand Free ◽  
Simulation And Experiment ◽  
Electro Oxidation ◽  
Catalytic Supports ◽  
Dependent Processes

Tetrahexahedral particles (~10 to ~500 nanometers) composed of platinum (Pt), palladium, rhodium, nickel, and cobalt, as well as a library of bimetallic compositions, were synthesized on silicon wafers and on catalytic supports by a ligand-free, solid-state reaction that used trace elements [antimony (Sb), bismuth (Bi), lead, or tellurium] to stabilize high-index facets. Both simulation and experiment confirmed that this method stabilized the {210} planes. A study of the PtSb system showed that the tetrahexahedron shape resulted from the evaporative removal of Sb from the initial alloy—a shape-regulating process fundamentally different from solution-phase, ligand-dependent processes. The current density at a fixed potential for the electro-oxidation of formic acid with a commercial Pt/carbon catalyst increased by a factor of 20 after transformation with Bi into tetrahexahedral particles.

Kinetically controlled synthesis of Pt–Cu alloy concave nanocubes with high-index facets for methanol electro-oxidation

2014 ◽  
Vol 50 (5) ◽  
pp. 560-562 ◽  
Author(s):  
Yue Qi ◽  
Ting Bian ◽  
Sang-Il Choi ◽  
Yingying Jiang ◽  
Chuanhong Jin ◽  
...  
Keyword(s):  
High Index ◽  
Controlled Synthesis ◽  
Cu Alloy ◽  
Kinetically Controlled ◽  
Electro Oxidation ◽  
Kinetically Controlled Synthesis

Synthesis of Tetrahexahedral Platinum Nanocrystals with High-Index Facets and High Electro-Oxidation Activity.

ChemInform ◽  
2007 ◽  
Vol 38 (31) ◽  
Author(s):  
Na Tian ◽  
Zhi-You Zhou ◽  
Shi-Gang Sun ◽  
Yong Ding ◽  
Zhong Lin Wang
Keyword(s):  
High Index ◽  
Oxidation Activity ◽  
Platinum Nanocrystals ◽  
Electro Oxidation

Synthesis of Tetrahexahedral Platinum Nanocrystals with High-Index Facets and High Electro-Oxidation Activity

Science ◽  
2007 ◽  
Vol 316 (5825) ◽  
pp. 732-735 ◽  
Author(s):  
N. Tian ◽  
Z.-Y. Zhou ◽  
S.-G. Sun ◽  
Y. Ding ◽  
Z. L. Wang
Keyword(s):  
High Index ◽  
Oxidation Activity ◽  
Platinum Nanocrystals ◽  
Electro Oxidation

The usefulness of high index low symmetry zone axes for holz line analysis

1987 ◽  
Vol 45 ◽  
pp. 384-385
Author(s):  
C. M. Sung ◽  
D. B. Williams
Keyword(s):  
Lattice Parameter ◽  
High Order ◽  
Zone Axis ◽  
High Index ◽  
High Symmetry ◽  
Second Phases ◽  
Line Patterns ◽  
Low Symmetry ◽  
Line Analysis

Researchers have tended to use high symmetry zone axes (e.g. <111> <114>) for High Order Laue Zone (HOLZ) line analysis since Jones et al reported the origin of HOLZ lines and described some of their applications. But it is not always easy to find HOLZ lines from a specific high symmetry zone axis during microscope operation, especially from second phases on a scale of tens of nanometers. Therefore it would be very convenient if we can use HOLZ lines from low symmetry zone axes and simulate these patterns in order to measure lattice parameter changes through HOLZ line shifts. HOLZ patterns of high index low symmetry zone axes are shown in Fig. 1, which were obtained from pure Al at -186°C using a double tilt cooling holder. Their corresponding simulated HOLZ line patterns are shown along with ten other low symmetry orientations in Fig. 2. The simulations were based upon kinematical diffraction conditions.

Instant and Persistent Hydrogen Production Using Nano High Entropy Catalyst

2019 ◽  
Author(s):  
Nirmal Kumar ◽  
Subramanian Nellaiappan ◽  
Ritesh Kumar ◽  
Kirtiman Deo Malviya ◽  
K. G. Pradeep ◽  
...  
Keyword(s):  
Formic Acid ◽  
Minimum Energy ◽  
High Entropy Alloy ◽  
Hydrogen Energy ◽  
High Entropy ◽  
Electro Oxidation ◽  
The Individual ◽  
Novel Catalyst ◽  
Cell Anode ◽  
Fuel Cell Anode

<div>Renewable harvesting clean and hydrogen energy using the benefits of novel multicatalytic materials of high entropy alloy (HEA equimolar Cu-Ag-Au-Pt-Pd) from formic acid with minimum energy input has been achieved in the present investigation. The synthesis effect of pristine elements in the HEA drives the electro-oxidation reaction towards non-carbonaceous pathway . The atomistic simulation based on DFT rationalize the distinct lowering of the d-band center for the individual atoms in the HEA as compared to the pristine counterparts. This catalytic activity of the HEA has also been extended to methanol electro-oxidation to show the unique capability of the novel catalyst. The nanostructured HEA, properties using a combination of casting and cry omilling techniques can further be utilized as fuel cell anode in direct formic acid/methanol fuel cells (DFFE).<br></div>

REMOVAL OF ORGANIC MATERIALS FROM TANNERY WASTEWATER CONTAINING AMMONIA FOR REUSE USING ELECTRO-OXIDATION

2018 ◽  
Vol 17 (9) ◽  
pp. 2157-2164 ◽  
Author(s):  
Palanivel Saravanan ◽  
Sundaramoorthy Sundarapandiyan ◽  
Guntamadugu Bhaskar Raju ◽  
Bangaru Chandrasekaran
Keyword(s):  
Organic Materials ◽  
Tannery Wastewater ◽  
Electro Oxidation
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