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Kanagaraj T, Manikandan V, Ganesan S, Albeshr MF, Mythili R, Song KS, Lo HM. Employing Piper longum extract for eco-friendly fabrication of PtPd alloy nanoclusters: advancing electrolytic performance of formic acid and methanol oxidation. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:172. [PMID: 38592578 DOI: 10.1007/s10653-024-01953-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 03/11/2024] [Indexed: 04/10/2024]
Abstract
Advancement in bioinspired alloy nanomaterials has a crucial impact on fuel cell applications. Here, we report the synthesis of PtPd alloy nanoclusters via the hydrothermal method using Piper longum extract, representing a novel and environmentally friendly approach. Physicochemical characteristics of the synthesized nanoclusters were investigated using various instrumentation techniques, including X-ray photoelectron spectroscopy, X-ray diffraction, and High-Resolution Transmission electron microscopy. The electrocatalytic activity of the biogenic PtPd nanoclusters towards the oxidation of formic acid and methanol was evaluated chronoamperometry and cyclic voltammetry studies. The surface area of the electrocatalyst was determined to be 36.6 m2g-1 by Electrochemical Surface Area (ECSA) analysis. The biologically inspired PtPd alloy nanoclusters exhibited significantly higher electrocatalytic activity compared to commercial Pt/C, with specific current responses of 0.24 mA cm - 2 and 0.17 mA cm - 2 at synthesis temperatures of 180 °C and 200 °C, respectively, representing approximately four times higher oxidation current after 120 min. This innovative synthesis approach offers a promising pathway for the development of PtPd alloy nanoclusters with enhanced electrocatalytic activity, thereby advancing fuel cell technology towards a sustainable energy solution.
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Affiliation(s)
- Thamaraiselvi Kanagaraj
- Department of Chemistry, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamil Nadu, 602105, India
| | - Velu Manikandan
- Department of Medical IT Convergence Engineering, Kumoh National Institute of Technology, Gumi, South Korea
| | - Sivarasan Ganesan
- Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung, Taiwan
| | - Mohammed F Albeshr
- Department of Zoology, College of Sciences, King Saud University, P.O. Box. 2455, 11451, Riyadh, Saudi Arabia
| | - R Mythili
- Department of Pharmacology, Saveetha Institute of Medical and Technical Sciences, Saveetha Dental College, Saveetha University, Chennai, 600077, India
| | - Kwang Soup Song
- Department of Medical IT Convergence Engineering, Kumoh National Institute of Technology, Gumi, South Korea.
| | - Huang-Mu Lo
- Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung, Taiwan.
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Nelli D, Mastronardi V, Brescia R, Pompa PP, Moglianetti M, Ferrando R. Hydrogen Promotes the Growth of Platinum Pyramidal Nanocrystals by Size-Dependent Symmetry Breaking. NANO LETTERS 2023; 23:2644-2650. [PMID: 36995102 PMCID: PMC10103309 DOI: 10.1021/acs.nanolett.2c04982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/06/2023] [Indexed: 06/19/2023]
Abstract
The growth of pyramidal platinum nanocrystals is studied by a combination of synthesis/characterization experiments and density functional theory calculations. It is shown that the growth of pyramidal shapes is due to a peculiar type of symmetry breaking, which is caused by the adsorption of hydrogen on the growing nanocrystals. Specifically, the growth of pyramidal shapes is attributed to the size-dependent adsorption energies of hydrogen atoms on {100} facets, whose growth is hindered only if they are sufficiently large. The crucial role of hydrogen adsorption is further confirmed by the absence of pyramidal nanocrystals in experiments where the reduction process does not involve hydrogen.
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Affiliation(s)
- Diana Nelli
- Dipartimento
di Fisica, Università di Genova, Via Dodecaneso 33, Genova 16146, Italia
| | - Valentina Mastronardi
- Istituto
Italiano di Tecnologia, Nanobiointeractions & Nanodiagnostics, PVia Morego 30, Genova 16163, Italy
- BeDimensional
S.p.A., Via Lungotorrente
Secca 30R, Genova 16163, Italy
| | - Rosaria Brescia
- Electron
Microscopy Facility, Istituto Italiano di
Tecnologia, Via Morego
30, Genova 16163, Italy
| | - Pier Paolo Pompa
- Istituto
Italiano di Tecnologia, Nanobiointeractions & Nanodiagnostics, PVia Morego 30, Genova 16163, Italy
| | - Mauro Moglianetti
- Istituto
Italiano di Tecnologia, Nanobiointeractions & Nanodiagnostics, PVia Morego 30, Genova 16163, Italy
- Center for
Cultural Heritage Technology, Istituto Italiano
di Tecnologia, via Torino
155, Venice 30172, Italy
| | - Riccardo Ferrando
- Dipartimento
di Fisica, Università di Genova, Via Dodecaneso 33, Genova 16146, Italia
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Ansón-Casaos A, Martínez-Barón C, Angoy-Benabarre S, Hernández-Ferrer J, Benito A, Maser W, Blesa M. Stability of a pyrimidine-based dye-sensitized TiO2 photoanode in sacrificial electrolytes. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.117114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Cu(OH)2-Ni(OH)2 engulfed by zeolite-Y hydroxyl nest and multiwalled carbon nanotube for effective methanol oxidation reaction. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139313] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Active electrochemical interfaces stabilized through self-organized potential oscillations. Electrochem commun 2020. [DOI: 10.1016/j.elecom.2020.106853] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Affiliation(s)
- Yoshiharu MUKOUYAMA
- Division of Science, College of Science and Engineering, Tokyo Denki University
| | - Keisuke IIDA
- Division of Science, College of Science and Engineering, Tokyo Denki University
| | - Terumasa KUGE
- Division of Science, College of Science and Engineering, Tokyo Denki University
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Zhu X, Gupta K, Bersani M, Darr JA, Shearing PR, Brett DJ. Electrochemical reduction of carbon dioxide on copper-based nanocatalysts using the rotating ring-disc electrode. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.07.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Graf M, Haensch M, Carstens J, Wittstock G, Weissmüller J. Electrocatalytic methanol oxidation with nanoporous gold: microstructure and selectivity. NANOSCALE 2017; 9:17839-17848. [PMID: 29116276 DOI: 10.1039/c7nr05124g] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The properties of Nanoporous Gold (NPG) obtained by the selective dissolution of Ag from an Au-Ag alloy can be tuned by the details of its fabrication, and specifically the residual Ag content is correlated to the ligament size of the material. We link this correlation to methanol electro-oxidation. Specifically, two different NPG types (obtained by potentiostatic dealloying) are compared with one obtained by free corrosion. They show remarkable differences in activity. Quantitative product analysis reveals that NPG shows nearly selective oxidation of CH3OH to HCOO- when NPG is used as an active electrode in contrast to planar Au. This trend can further be enhanced when applying finer nanoporous structures that are linked to a higher Ag content. X-ray photoelectron spectroscopy (XPS) reveals changes in the nature of residual Ag from which we conclude that Ag is not a passive component in the methanol oxidation process.
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Affiliation(s)
- Matthias Graf
- Institute of Materials Physics and Technology, Hamburg University of Technology, Hamburg, Germany.
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Hartl FW, Varela H. The Effect of Solution pH and Temperature on the Oscillatory Electro-Oxidation of Formic Acid on Platinum. ChemistrySelect 2017. [DOI: 10.1002/slct.201702008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Fabian W. Hartl
- Department of Physical Chemistry; Institute of Chemistry of São Carlos; University of São Paulo, POBox 780; 13560-970 São Carlos, SP Brazil
| | - Hamilton Varela
- Department of Physical Chemistry; Institute of Chemistry of São Carlos; University of São Paulo, POBox 780; 13560-970 São Carlos, SP Brazil
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Antonopoulos I, Karantonis A. Electrochemistry of copper in methanolic solutions: Anodic oxidation and fabrication of hydrophobic surfaces. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.04.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Zülke AA, Varela H. The effect of temperature on the coupled slow and fast dynamics of an electrochemical oscillator. Sci Rep 2016; 6:24553. [PMID: 27079514 PMCID: PMC4832193 DOI: 10.1038/srep24553] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 03/31/2016] [Indexed: 11/25/2022] Open
Abstract
The coupling among disparate time-scales is ubiquitous in many chemical and biological systems. We have recently investigated the effect of fast and, long-term, slow dynamics in surface processes underlying some electrocatalytic reactions. Herein we report on the effect of temperature on the coupled slow and fast dynamics of a model system, namely the electro-oxidation of formic acid on platinum studied at five temperatures between 5 and 45 °C. The main result was a turning point found at 25 °C, which clearly defines two regions for the temperature dependency on the overall kinetics. In addition, the long-term evolution allowed us to compare reaction steps related to fast and slow evolutions. Results were discussed in terms of the key role of PtO species, which chemically couple slow and fast dynamics. In summary we were able to: (a) identify the competition between two reaction steps as responsible for the occurrence of two temperature domains; (b) compare the relative activation energies of these two steps; and (c) suggest the role of a given reaction step on the period-increasing set of reactions involved in the oscillatory dynamics. The introduced methodology could be applied to other systems to uncover the temperature dependence of complex chemical networks.
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Affiliation(s)
- Alana A Zülke
- Institute of Chemistry of São Carlos, University of São Paulo, POBox 780, 13560-970, São Carlos, SP, Brazil
| | - Hamilton Varela
- Institute of Chemistry of São Carlos, University of São Paulo, POBox 780, 13560-970, São Carlos, SP, Brazil
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