1
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Moriau L, Stojanovski K, Jovanovič P, Escalera-López D, Cherevko S, Hodnik N. Towards electrochemical iridium recycling in acidic media: effect of the presence of organic molecules and chloride ions. RSC Adv 2023; 13:7980-7987. [PMID: 36909751 PMCID: PMC9997448 DOI: 10.1039/d2ra07142h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 03/04/2023] [Indexed: 03/12/2023] Open
Abstract
The utilization of iridium is expected to surge in the next few years, notably due to the rising implementation of water electrolyzer devices in the energy transition. However, the natural resources of this noble metal are extremely limited and thus its recycling will become of high importance. Unfortunately, iridium is also the most corrosion resistant platinum group metal, making its recovery from waste a difficult and energy-demanding process. Hereby, we study the impact of organics and chloride ions on the electrochemical dissolution of iridium in order to pave the way towards green recycling of this precious metal. We present a 40 times increased dissolution when cycling iridium in presence of HCl and 1 M ethanol compared to HClO4. Our results point towards the direction of destabilizing Ir at relatively mild conditions in acidic media.
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Affiliation(s)
- L Moriau
- Department of Materials Chemistry, National Institute of Chemistry 1000 Ljubljana Slovenia .,Center of Excellence Low-Carbon Technologies 1000 Ljubljana Slovenia
| | - K Stojanovski
- Helmotz-Institute Erlangen Nümberg for Renewable Energy (IEK-11), Forschunszentrum Jülich GmbH Erlangen Germany
| | - P Jovanovič
- Department of Materials Chemistry, National Institute of Chemistry 1000 Ljubljana Slovenia
| | - D Escalera-López
- Helmotz-Institute Erlangen Nümberg for Renewable Energy (IEK-11), Forschunszentrum Jülich GmbH Erlangen Germany
| | - S Cherevko
- Helmotz-Institute Erlangen Nümberg for Renewable Energy (IEK-11), Forschunszentrum Jülich GmbH Erlangen Germany
| | - N Hodnik
- Department of Materials Chemistry, National Institute of Chemistry 1000 Ljubljana Slovenia .,University of Nova Gorica 5000 Nova Gorica Slovenia
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2
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Hossain SS, Ahmad Alwi MM, Saleem J, Al-Odail F, Basu A, Mozahar Hossain M. Recent Advances in Anode Electrocatalysts for Direct Formic Acid Fuel Cell-II-Platinum-Based Catalysts. CHEM REC 2022; 22:e202200156. [PMID: 36073789 DOI: 10.1002/tcr.202200156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 08/19/2022] [Indexed: 12/14/2022]
Abstract
Platinum-based catalysts have a long history of application in formic acid oxidation (FAO). The single metal Pt is active in FAO but expensive, scarce, and rapidly deactivates. Understanding the mechanism of FAO over Pt important for the rational design of catalysts. Pt nanomaterials rapidly deactivate because of the CO poisoning of Pt active sites via the dehydration pathway. Alloying with another transition metal improves the performance of Pt-based catalysts through bifunctional, ensemble, and steric effects. Supporting Pt catalysts on a high-surface-area support material is another technique to improve their overall catalytic activity. This review summarizes recent findings on the mechanism of FAO over Pt and Pt-based alloy catalysts. It also summarizes and analyzes binary and ternary Pt-based catalysts to understand their catalytic activity and structure relationship.
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Affiliation(s)
- Sk Safdar Hossain
- Department of Chemical Engineering, College of Engineering, King Faisal University, Al-Ahsa, 31982, Kingdom of Saudi Arabia
| | - Muhammad Mudassir Ahmad Alwi
- Department of Materials Engineering, College of Engineering, King Faisal University, Al-Ahsa, 31982, Kingdom of Saudi Arabia
| | - Junaid Saleem
- Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
| | - Faisal Al-Odail
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa, 31982, Kingdom of Saudi Arabia
| | - Avijit Basu
- Department of Chemical Engineering, College of Engineering, King Faisal University, Al-Ahsa, 31982, Kingdom of Saudi Arabia
| | - Mohammad Mozahar Hossain
- Department of Chemical Engineering, College of Engineering, King Fahd University of Petroleum & Minerals, Dhahran, 31612, Kingdom of Saudi Arabia
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3
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Waenkaew P, Saipanya S, Themsirimonkon S, Maturost S, Jakmunee J, Pongpichayakul N. Relative electrochemical activity of bimetallic PtM catalysts electrodeposited on a composite of carbon black and carbon nanotubes for enhancement in formic acid oxidation reaction. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05229-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Rettenmaier C, Arán-Ais RM, Timoshenko J, Rizo R, Jeon HS, Kühl S, Chee SW, Bergmann A, Roldan Cuenya B. Enhanced Formic Acid Oxidation over SnO 2-decorated Pd Nanocubes. ACS Catal 2020; 10:14540-14551. [PMID: 33362944 PMCID: PMC7754515 DOI: 10.1021/acscatal.0c03212] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/23/2020] [Indexed: 11/28/2022]
Abstract
The formic acid oxidation reaction (FAOR) is one of the key reactions that can be used at the anode of low-temperature liquid fuel cells. To allow the knowledge-driven development of improved catalysts, it is necessary to deeply understand the fundamental aspects of the FAOR, which can be ideally achieved by investigating highly active model catalysts. Here, we studied SnO2-decorated Pd nanocubes (NCs) exhibiting excellent electrocatalytic performance for formic acid oxidation in acidic medium with a SnO2 promotion that boosts the catalytic activity by a factor of 5.8, compared to pure Pd NCs, exhibiting values of 2.46 A mg-1 Pd for SnO2@Pd NCs versus 0.42 A mg-1 Pd for the Pd NCs and a 100 mV lower peak potential. By using ex situ, quasi in situ, and operando spectroscopic and microscopic methods (namely, transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray absorption fine-structure spectroscopy), we identified that the initially well-defined SnO2-decorated Pd nanocubes maintain their structure and composition throughout FAOR. In situ Fourier-transformed infrared spectroscopy revealed a weaker CO adsorption site in the case of the SnO2-decorated Pd NCs, compared to the monometallic Pd NCs, enabling a bifunctional reaction mechanism. Therein, SnO2 provides oxygen species to the Pd surface at low overpotentials, promoting the oxidation of the poisoning CO intermediate and, thus, improving the catalytic performance of Pd. Our SnO x -decorated Pd nanocubes allowed deeper insight into the mechanism of FAOR and hold promise for possible applications in direct formic acid fuel cells.
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Affiliation(s)
- Clara Rettenmaier
- Department of Interface Science, Fritz-Haber-Institute of the Max-Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Rosa M. Arán-Ais
- Department of Interface Science, Fritz-Haber-Institute of the Max-Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Janis Timoshenko
- Department of Interface Science, Fritz-Haber-Institute of the Max-Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Rubén Rizo
- Department of Interface Science, Fritz-Haber-Institute of the Max-Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Hyo Sang Jeon
- Department of Interface Science, Fritz-Haber-Institute of the Max-Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Stefanie Kühl
- Department of Interface Science, Fritz-Haber-Institute of the Max-Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - See Wee Chee
- Department of Interface Science, Fritz-Haber-Institute of the Max-Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Arno Bergmann
- Department of Interface Science, Fritz-Haber-Institute of the Max-Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Beatriz Roldan Cuenya
- Department of Interface Science, Fritz-Haber-Institute of the Max-Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
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5
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Kim H, Yang W, Lee WH, Han MH, Moon J, Jeon C, Kim D, Ji SG, Chae KH, Lee KS, Seo J, Oh HS, Kim H, Choi CH. Operando Stability of Platinum Electrocatalysts in Ammonia Oxidation Reactions. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02413] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Haesol Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Woojin Yang
- Department of Chemistry, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Woong Hee Lee
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Man Ho Han
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Joonhee Moon
- Division of Analytical Science Research, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Cheolho Jeon
- Division of Analytical Science Research, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Donghyun Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Sang Gu Ji
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Keun Hwa Chae
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Kug-Seung Lee
- Beamline Department, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Jiwon Seo
- Department of Chemistry, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Hyung-Suk Oh
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Hyungjun Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Chang Hyuck Choi
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
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6
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Kormányos A, Speck FD, Mayrhofer KJJ, Cherevko S. Influence of Fuels and pH on the Dissolution Stability of Bifunctional PtRu/C Alloy Electrocatalysts. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02094] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Attila Kormányos
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Florian D. Speck
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstraße 3, 91058 Erlangen, Germany
- Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstaße 3, 91058 Erlangen, Germany
| | - Karl J. J. Mayrhofer
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstraße 3, 91058 Erlangen, Germany
- Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstaße 3, 91058 Erlangen, Germany
| | - Serhiy Cherevko
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstraße 3, 91058 Erlangen, Germany
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7
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Ultrathin Film PtxPd(1-x) Alloy Catalysts for Formic Acid Oxidation Synthesized by Surface Limited Redox Replacement of Underpotentially Deposited H Monolayer. ELECTROCHEM 2020. [DOI: 10.3390/electrochem1010002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This work emphasizes the development of a green synthetic approach for growing ultrathin film PtxPd(1-x) alloy catalysts for formic acid oxidation (FAO) by surface limited redox replacement of underpotentially deposited H sacrificial layer. Up to three-monolayers-thick PtxPd(1-x) films with different composition are generated on Au electrodes and characterized for composition and surface roughness using XPS and electrochemical methods, respectively. XPS results show close correlation between solution molar ratio and atomic composition, with slightly higher Pt fraction in the deposited films. The accordingly deposited Pt42Pd58 films demonstrated remarkable specific and mass activities of up to 35 mAcm−2 and 45 Amg−1 respectively, lasting for more than 1500 cycles in FAO tests. This performance, found to be better twice or more than that of pure Pt counterparts, renders the Pt42Pd58 films comparable with the frontrunner FAO catalysts. In addition, the best alloy catalyst establishes a nearly hysteresis-free FAO CV curve a lot earlier than its Pt counterpart and thus supports the direct FAO pathway for longer. Overall, the combination of high Pd activity and CO tolerance with the remarkable Pt stability results in highly active and durable FAO catalysts. Finally, this facile and cost-effective synthetic approach allows for scaling the catalyst production and is thus appropriate for foreseeable commercialization.
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8
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Xie Y, Li C, Razek SA, Fang J, Dimitrov N. Synthesis of Nanoporous Au−Cu−Pt Alloy as a Superior Catalyst for the Methanol Oxidation Reaction. ChemElectroChem 2020. [DOI: 10.1002/celc.201901932] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yunxiang Xie
- Department of Chemistry State University of New York at Binghamton Binghamton NY 13902 USA
| | - Can Li
- Department of Chemistry State University of New York at Binghamton Binghamton NY 13902 USA
| | - Sara A Razek
- Department of Chemistry State University of New York at Binghamton Binghamton NY 13902 USA
| | - Jiye Fang
- Department of Chemistry State University of New York at Binghamton Binghamton NY 13902 USA
| | - Nikolay Dimitrov
- Department of Chemistry State University of New York at Binghamton Binghamton NY 13902 USA
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9
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Romero Hernández A, Arce Estrada E, Ezeta A, Manríquez M. Formic acid oxidation on AuPd core-shell electrocatalysts: Effect of surface electronic structure. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134977] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Lin L, Yuan M, Sun Z, Li H, Nan C, Sun G, Ma S. The in situ growth of ultrathin Fcc-NiPt nanocrystals on graphene for methanol and formic acid oxidation. Dalton Trans 2018; 47:15131-15140. [PMID: 30310897 DOI: 10.1039/c8dt03175d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Due to the increasing demand for energy, improving the current density of fuel cells is an urgent issue. Here we report a bifunctional electrocatalyst for fuel cells involving methanol or formic acid oxidation. A nanocomposite consisting of 7.2 nm NiPt nanocrystals, which are grown in situ on graphene nanosheets (NiPt/GN), has been prepared via a solution thermal decomposition method. The NiPt/GN nanocatalyst presents specific activities as high as 41.1 mA cm-2 and 42.9 mA cm-2 for methanol oxidation and formic acid oxidation, respectively, outperforming most reported catalysts. Moreover, it retains 76.3% of this activity after 900 cycles of methanol oxidation. Additionally, in comparison with general NiPt nanoparticles, the NiPt/GN nanocatalyst shows higher electrocatalytic activity in methanol and formic acid oxidation. All these results indicate that ultrathin NiPt nanocrystals grown in situ on graphene nanosheet substrates can significantly improve performance as a bifunctional electrocatalyst.
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Affiliation(s)
- Liu Lin
- Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry, Beijing Normal University, Beijing 100875, China.
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11
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Xu F, Cheng K, Yu Y, Mu S. One-pot synthesis of Pt/CeO 2 /C catalyst for enhancing the SO 2 electrooxidation. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.01.154] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Surface Limited Redox Replacement Deposition of Platinum Ultrathin Films on Gold: Thickness and Structure Dependent Activity towards the Carbon Monoxide and Formic Acid Oxidation reactions. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.05.161] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Tian M, Cousins C, Beauchemin D, Furuya Y, Ohma A, Jerkiewicz G. Influence of the Working and Counter Electrode Surface Area Ratios on the Dissolution of Platinum under Electrochemical Conditions. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00200] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Min Tian
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Christine Cousins
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Diane Beauchemin
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Yoshihisa Furuya
- Nissan
Research Center, Nissan Motor Company, 1-Natsushima Cho, Yokosuka, Kanagawa 237-8523, Japan
| | - Atsushi Ohma
- Nissan
Research Center, Nissan Motor Company, 1-Natsushima Cho, Yokosuka, Kanagawa 237-8523, Japan
| | - Gregory Jerkiewicz
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
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14
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Wang RX, Fan YJ, Liang ZR, Zhang JM, Zhou ZY, Sun SG. PdSn nanocatalysts supported on carbon nanotubes synthesized in deep eutectic solvents with high activity for formic acid electrooxidation. RSC Adv 2016. [DOI: 10.1039/c6ra10176c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel strategy in DESs for the fabrication of MWCNTs-supported PdSn alloy nanostructures is reported. The prepared PdSn/MWCNT shows remarkably improved electrocatalytic performance towards formic acid oxidation reaction.
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Affiliation(s)
- Rui-Xiang Wang
- Guangxi Key Laboratory of Low Carbon Energy Materials
- College of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- China
| | - You-Jun Fan
- Guangxi Key Laboratory of Low Carbon Energy Materials
- College of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- China
| | - Zhi-Rong Liang
- Guangxi Key Laboratory of Low Carbon Energy Materials
- College of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- China
| | - Jun-Ming Zhang
- Guangxi Key Laboratory of Low Carbon Energy Materials
- College of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- China
| | - Zhi-You Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
| | - Shi-Gang Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
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15
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Mercer MP, Plana D, Fermίn DJ, Morgan D, Vasiljevic N. Growth of epitaxial Pt1-xPbx alloys by surface limited redox replacement and study of their adsorption properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:10904-10912. [PMID: 26372676 DOI: 10.1021/acs.langmuir.5b02351] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The surface limited redox replacement (SLRR) method has been used to design two-dimensional Pt-Pb nanoalloys with controlled thickness, composition, and structure. The electrochemical behavior of these alloys has been systematically studied as a function of alloy composition. A single-cell, two-step SLRR protocol based on the galvanic replacement of underpotentially deposited monolayers of Pb with Pt was used to grow epitaxial Pt1-xPbx (x < 0.1) alloys of up to 10 ML thickness on Au substrates. It is shown that by varying the terminating potential of the galvanic replacement step, the Pb atomic content can be controlled in the films. Electrochemical analysis of the alloys showed that the adsorption of both H and CO exhibits similar, and systematic, decreases with small increases in the Pb content. These measurements, commonly used in electrocatalysis for the determination of active surface areas of Pt, suggested area values much lower than those expected based on the net Pt composition in the alloy as measured by XPS. These results show that Pb has a strong screening effect on the adsorption of both H and CO. Moreover, changes in alloy composition result in a negative shift in the potential of the peaks of CO oxidation that scales with the increase of Pb content. The results suggest electronic and bifunctional effects of incorporated Pb on the electrochemical behavior of Pt. The study illustrates the potential of the SLRR methodology, which could be employed in the design of 2-dimensional bimetallic Pt nanoalloys for fundamental studies of electrocatalytic behavior in fuel cell reactions dependent on the nature of alloying metal and its composition.
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Affiliation(s)
- M P Mercer
- Bristol Centre for Functional Nanomaterials, University of Bristol , Bristol BS8 1FD, U.K
- School of Physics, H.H. Wills Physics Laboratory, University of Bristol , Bristol BS8 1TL, U.K
| | - D Plana
- School of Chemistry, University of Bristol , Cantock's Close, Bristol BS8 1TS, U.K
| | - D J Fermίn
- Bristol Centre for Functional Nanomaterials, University of Bristol , Bristol BS8 1FD, U.K
- School of Chemistry, University of Bristol , Cantock's Close, Bristol BS8 1TS, U.K
| | - D Morgan
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University , Cardiff CF10 3AT, U.K
| | - N Vasiljevic
- Bristol Centre for Functional Nanomaterials, University of Bristol , Bristol BS8 1FD, U.K
- School of Physics, H.H. Wills Physics Laboratory, University of Bristol , Bristol BS8 1TL, U.K
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16
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Insight into electrocatalytic stability of low loading Pt-Bi/GC and Pt/GC clusters in formic acid oxidation. J Solid State Electrochem 2015. [DOI: 10.1007/s10008-015-2841-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Furuya Y, Mashio T, Ohma A, Tian M, Kaveh F, Beauchemin D, Jerkiewicz G. Influence of Electrolyte Composition and pH on Platinum Electrochemical and/or Chemical Dissolution in Aqueous Acidic Media. ACS Catal 2015. [DOI: 10.1021/cs5016035] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoshihisa Furuya
- Nissan Research
Center, Nissan Motor Company, 1-Natsushima
Cho, Yokosuka, Kanagawa 237-8523, Japan
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario K7L
3N6, Canada
| | - Tetsuya Mashio
- Nissan Research
Center, Nissan Motor Company, 1-Natsushima
Cho, Yokosuka, Kanagawa 237-8523, Japan
| | - Atsushi Ohma
- Nissan Research
Center, Nissan Motor Company, 1-Natsushima
Cho, Yokosuka, Kanagawa 237-8523, Japan
| | - Min Tian
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario K7L
3N6, Canada
| | - Farhad Kaveh
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario K7L
3N6, Canada
| | - Diane Beauchemin
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario K7L
3N6, Canada
| | - Gregory Jerkiewicz
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario K7L
3N6, Canada
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18
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Gong M, Li F, Yao Z, Zhang S, Dong J, Chen Y, Tang Y. Highly active and durable platinum-lead bimetallic alloy nanoflowers for formic acid electrooxidation. NANOSCALE 2015; 7:4894-4899. [PMID: 25706304 DOI: 10.1039/c4nr07375d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The Pt84Pb16 (atomic ratio) bimetallic alloy nanoflowers (Pt84Pb16 BANFs) are synthesized by a simple one-pot hydrothermal reduction method that effectively enhance the dehydrogenation pathway of the formic acid oxidation reaction (FAOR) due to the ensemble effect and the electronic effect. As a result, the mass activity of Pt84Pb16 BANFs for the FAOR is 16.7 times higher than that of commercial Pt black at 0.3 V potential.
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Affiliation(s)
- Mingxing Gong
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, PR China
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19
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Ahn SH, Liu Y, Moffat TP. Ultrathin Platinum Films for Methanol and Formic Acid Oxidation: Activity as a Function of Film Thickness and Coverage. ACS Catal 2015. [DOI: 10.1021/cs501228j] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Sang Hyun Ahn
- Materials Science and Engineering
Division, Material Measurement Laboratory, National Institute of Standard and Technology (NIST), 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
| | - Yihua Liu
- Materials Science and Engineering
Division, Material Measurement Laboratory, National Institute of Standard and Technology (NIST), 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
| | - Thomas P. Moffat
- Materials Science and Engineering
Division, Material Measurement Laboratory, National Institute of Standard and Technology (NIST), 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
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Ho SF, Mendoza-Garcia A, Guo S, He K, Su D, Liu S, Metin Ö, Sun S. A facile route to monodisperse MPd (M = Co or Cu) alloy nanoparticles and their catalysis for electrooxidation of formic acid. NANOSCALE 2014; 6:6970-6973. [PMID: 24838646 DOI: 10.1039/c4nr01107d] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
MPd (M = Co, or Cu) nanoparticles (NPs) were synthesized by borane-amine reduction of metal acetylacetonates. The size of the MPd NPs was controlled at 3.5 nm and their compositions were tuned by the molar ratios of the metal precursors. These MPd NPs were active catalysts for electrochemical oxidation of formic acid and the Cu30Pd70 NPs showed the highest mass activity at 1192.9 A gPd(-1), much higher than 552.6 A gPd(-1) obtained from the 3.5 nm Pd NPs. Our synthesis provides a facile route to MPd NPs, allowing further investigation of MPd NP catalysts for electrochemical oxidation and many other chemical reactions.
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Affiliation(s)
- Sally Fae Ho
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA.
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Jayaraju N, Banga D, Thambidurai C, Liang X, Kim YG, Stickney JL. PtRu nanofilm formation by electrochemical atomic layer deposition (E-ALD). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:3254-3263. [PMID: 24568151 DOI: 10.1021/la403018v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The high CO tolerance of PtRu electrocatalysis, compared with pure Pt and other Pt-based alloys, makes it interesting as an anode material in proton exchange membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC). This report describes the formation of bimetallic PtRu nanofilms using the electrochemical form of atomic layer deposition (E-ALD). Metal nanofilm formation using E-ALD is facilitated by use of surface-limited redox replacement (SLRR), where an atomic layer (AL) of a sacrificial metal is first formed by UPD. The AL is then spontaneously exchanged for a more noble metal at the open-circuit potential (OCP). In the present study, PtRu nanofilms were formed using SLRR for Pt and Ru, and Pb UPD was used to form the sacrificial layers. The PtRu E-ALD cycle consisted of Pb UPD at -0.19 V, followed by replacement using Pt(IV) ions at OCP, rinsing with blank, then Pb UPD at -0.19 V, followed by replacement using Ru(III) ions at OCP. PtRu nanofilm thickness was controlled by the number of times the cycle was repeated. PtRu nanofilms with atomic proportions of 70/30, 82/18, and 50/50 Pt/Ru were formed on Au on glass slides using related E-ALD cycles. The charge for Pb UPD and changes in the OCP during replacement were monitored during the deposition process. The PtRu films were then characterized by CO adsorption and electrooxidation to determine their overpotentials. The 50/50 PtRu nanofilms displayed the lowest CO electrooxidation overpotentials as well as the highest currents, compared with the other alloy compositions, pure Pt, and pure Ru. In addition, CO electrooxidation studies of the terminating AL on the 50/50 PtRu nanostructured alloy were investigated by deposition of one or two SLRR of Pt, Ru, or PtRu on top.
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Affiliation(s)
- Nagarajan Jayaraju
- Department of Chemistry, University of Georgia , Athens, Georgia 30602, United States
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