Formation and control of nanoporous Pt ribbons by two-step dealloying for methanol electro-oxidation
Source abstract
Abstract
Novel ultrafine nanoporous Pt (NP-Pt) ribbons were fabricated by dealloying melt-spun Al 85 Pt 15 and Al 85 Pt 8 Ce 7 alloys. The addtion of Ce to Al-Pt alloy changed the phase constituents and distribution of the alloy. During alkali-dealloying, CeOx nanorods formed and were distributed in NP-Pt. Sacrificial nanorods were then selectively removed during acid-dealloying, resulting in the formation of hierarchical NP-Pt ribbons with a ligament scale of approximately 3 nm. The specific surface area of the NP-Pt was 3 times greater than that of the Al 85 Pt 15 alloy without Ce. NP-Pt with a high active surface area had remarkable electro-catalytic performance and stability towards methanol oxidation.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Nanoporous metals and alloys · Electrocatalysts for Energy Conversion · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (52)
Show source-provided references
1. Nanoporous metals: fabrication strategies and advanced electrochemical applications in catalysis, sensing and energy systems10.1039/c2cs35210a ↗
2. Generalized fabrication of nanoporous metals (Au, Pd, Pt, Ag, and Cu) through chemical dealloying10.1021/jp811445a ↗
3. Erlebacher, Dealloying and dealloyed materials10.1146/annurev-matsci-070115-031739 ↗
4. Recent advances in porous Pt-based nanostructures: synthesis and electrochemical applications10.1039/c3cs60351b ↗
5. Dealloying monolithic Pt-Cu alloy to wire-like nanoporous structure for electrocatalysis and electrochemical sensing10.1016/j.corsci.2016.03.012 ↗
6. Rapid and efficient synthesis of platinum nanodendrites with high surface area by chemical reduction with formic acid10.1021/cm9038889 ↗
7. Nanoporous Pt-Ru networks and their electrocatalytical properties10.1002/adma.200602730 ↗
8. Nanoporous Pt with high surface area by reaction-limited aggregation of nanoparticles10.1021/la802938d ↗
9. Nanoporous Pt-Co alloy nanowires: fabrication, characterization, and electrocatalytic properties10.1021/nl902619q ↗
10. Epitaxial casting of nanotubular mesoporous platinum10.1002/anie.200463106 ↗
11. Using corrosion to fabricate various nanoporous metal structures10.1016/j.corsci.2014.12.017 ↗
12. Modulation of compositions and electrocatalytic activities ofquaternary nanoporous Pt-based alloys via controllable dealloying10.1016/j.ijhydene.2016.04.098 ↗
13. Defects evolution in nanoporous Au(Pt) during dealloying10.1016/j.scriptamat.2015.10.006 ↗
14. On the electrochemical dealloying of Al-based alloys in a NaCl aqueous solution10.1039/B919313H ↗
15. Dealloying of single-phase Al2Au to nanoporous gold ribbon/film with tunable morphology in inorganic and organic acidic media10.1016/j.apsusc.2012.05.165 ↗
16. An atomistic description of dealloying porosity evolution, the critical potential, and rate-limiting behavior10.1149/1.1784820 ↗
17. Fine-tuning the feature size of nanoporous silver10.1039/c2ce25313e ↗
18. High catalytic activity of ultrafine nanoporous palladium for electro-oxidation of methanol, ethanol, and formic acid10.1016/j.elecom.2009.08.011 ↗
19. Nanoporous metals with controlled multimodal pore size distribution10.1021/ja035318g ↗
20. Evolution of nanoporous Pt-Fe alloy nanowires by dealloying and their catalytic property for oxygen reduction reaction10.1002/adfm.201100723 ↗
21. Macroscopically strong nanoporous Pt prepared by dealloying10.1002/adem.200700177 ↗
22. Aligned nanoporous Pt-Cu bimetallic microwires with high catalytic activity toward methanol electrooxidation10.1021/acscatal.5b00073 ↗
23. Nanoporous Pt-Co alloy nanowires: fabrication, characterization, and electrocatalytic properties10.1021/nl902619q ↗
24. Formation of nanoporous noble metal thin films by electrochemical dealloying of PtxSi1-x10.1063/1.2161939 ↗
25. Eutectic-directed self-templating synthesis of PtNi nanoporous nanowires with superior electrocatalytic performance towards the oxygen reduction reaction: experiment and DFT calculation10.1039/C7TA06247H ↗
26. The fabrication of nanoporous Pt-based multimetallic alloy nanowires and their improved electrochemical durability10.1088/0957-4484/22/10/105604 ↗
27. Effective ionic-liquid microemulsion based electrodeposition of mesoporous Co-Pt films for methanol oxidation catalysis in alkaline media10.1039/C6TA02035F ↗
28. Controlled nanoporous Pt morphologies by varying deposition parameters10.1063/1.3194109 ↗
29. Mesostructured intermetallic compounds of platinum and non-Transition metals for enhanced electrocatalysis of oxygen reduction reaction10.1002/adfm.201401868 ↗
30. Nanoporous PtRu alloys for electrocatalysis10.1021/la9041474 ↗
31. Fabrication of bi-modal nanoporous bimetallic Pt–Au alloy with excellent electrocatalytic performance towards formic acid oxidation10.1039/c1gc15208d ↗
32. Nanoporous silver for electrocatalysis application in alkaline fuel cells10.1016/j.matdes.2016.09.037 ↗
33. Hierarchical nested-network nanostructure by dealloying10.1021/nn4021345 ↗
34. Nanoporous Ag-ZrO2 composites prepared by chemical dealloying for borohydride electro-oxidation10.1016/j.ijhydene.2014.07.102 ↗
35. The scherrer formula for X-Ray particle size determination10.1103/PhysRev.56.978 ↗
36. Mesoporous NiO-CeO2 catalysts for CO oxidation: nickel content effect and mechanism aspect10.1016/j.apcata.2015.01.037 ↗
37. A facile one-pot dealloying strategy to synthesize monolithic asymmetry-patterned nanoporous copper ribbons with tunable microstructure and nanoporosity10.1039/C5RA22978B ↗
38. Great influence of anions for controllable synthesis of CeO2 nanostructures: from nanorods to nanocubes10.1021/jp804140e ↗
39. Evolution of nanoporosity in dealloying10.1038/35068529 ↗
40. Kinetics of particle coarsening at gold electrode/electrolyte solution interfaces followed by in situ scanning tunneling microscopy10.1149/1.1836466 ↗
41. Length-scale modulated and electrocatalytic activity enhanced nanoporous gold by doping10.1021/jp110011w ↗
42. Elaboration of nanoporous copper by modifying surface diffusivity by the minor addition of gold10.1016/j.micromeso.2012.08.026 ↗
43. Fabrication and characterization of magnetic nanoporous Cu/(Fe,Cu)3O4 composites with excellent electrical conductivity by one-step dealloying10.1039/c1jm10412h ↗
44. Stabilized nanoporous metals by dealloying ternary alloy precursors10.1002/adma.200702760 ↗
45. Highly dispersed ultrafine Pt nanoparticles on reduced graphene oxide nanosheets: In situ sacrificial template synthesis and superior electrocatalytic performance for methanol oxidation10.1021/acsami.5b06153 ↗
46. Ultrasonic-assisted synthesis of Pd?Pt/carbon nanotubes nanocomposites for enhanced electro-oxidation of ethanol and methanol in alkaline medium10.1016/j.ultsonch.2015.07.021 ↗
47. Controlled synthesis of Pt-decorated Au nanostructure and its promoted activity toward formic acid electro-oxidation10.1016/j.electacta.2009.04.018 ↗
48. Electrochemical impedance studies of methanol electro-oxidation on Pt/C thin film electrode10.1149/1.1467940 ↗
49. Influence of metal oxides on Pt catalysts for methanol electrooxidation using electrochemical impedance spectroscopy10.1016/j.jpowsour.2008.11.095 ↗
50. Electrochemical properties of Pt-modified nano-honeycomb diamond electrodes10.1016/S0022-0728(01)00614-3 ↗
51. Electrocatalysis of methanol oxidation10.1016/S0013-4686(02)00336-5 ↗
52. Methanol electrooxidation on supported Pt and PtRu catalysts in acid and alkaline solutions10.1016/S0013-4686(02)00340-7 ↗