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Ming S, Wheatley AEH. Manipulating morphology and composition in colloidal heterometallic nanopods and nanodendrites. NANOSCALE 2023; 15:8814-8824. [PMID: 37114328 DOI: 10.1039/d3nr00461a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Branched Pt nanoparticles represent an exciting class of nanomaterials with high surface areas suitable for applications in electrocatalysis. Introducing a second metal can enhance performance and reduce cost. External factors such as capping agents and temperature have been used to offer insights into nanopod formation and to encourage their kinetic evolution. More recently, nanodendrites have been reported, though synthesis has generally been empirical; making controlled variation of morphology while maintaining bimetallic composition an elusive target. We report the combination of Pt with Fe under a range of conditions, yielding individually bimetallic nanoparticles whose construction sheds new light on nanopod and/or nanodendrite formation. Fine control of metal precursor reduction through modulating capping agents, reagents, and temperature initially directs nanopod synthesis. Morphology control is retained while composition is then varied from Pt-rich to Pt-poor. Additionally, conditions are identified that promote the collision-based branching of nanopod arms. This allows synthesis to be redirected for the selective growth of compositionally controlled nanodendrites in predictable fashion.
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Affiliation(s)
- Siyi Ming
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
| | - Andrew E H Wheatley
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
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2
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Tellez-Cruz MM, Escorihuela J, Solorza-Feria O, Compañ V. Proton Exchange Membrane Fuel Cells (PEMFCs): Advances and Challenges. Polymers (Basel) 2021; 13:3064. [PMID: 34577965 PMCID: PMC8468942 DOI: 10.3390/polym13183064] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/21/2021] [Accepted: 08/30/2021] [Indexed: 11/16/2022] Open
Abstract
The study of the electrochemical catalyst conversion of renewable electricity and carbon oxides into chemical fuels attracts a great deal of attention by different researchers. The main role of this process is in mitigating the worldwide energy crisis through a closed technological carbon cycle, where chemical fuels, such as hydrogen, are stored and reconverted to electricity via electrochemical reaction processes in fuel cells. The scientific community focuses its efforts on the development of high-performance polymeric membranes together with nanomaterials with high catalytic activity and stability in order to reduce the platinum group metal applied as a cathode to build stacks of proton exchange membrane fuel cells (PEMFCs) to work at low and moderate temperatures. The design of new conductive membranes and nanoparticles (NPs) whose morphology directly affects their catalytic properties is of utmost importance. Nanoparticle morphologies, like cubes, octahedrons, icosahedrons, bipyramids, plates, and polyhedrons, among others, are widely studied for catalysis applications. The recent progress around the high catalytic activity has focused on the stabilizing agents and their potential impact on nanomaterial synthesis to induce changes in the morphology of NPs.
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Affiliation(s)
- Miriam M. Tellez-Cruz
- Department of Chemistry, Centro de Investigación y de Estudios Avanzados, Av. IPN 2508, Ciudad de México 07360, Mexico; (M.M.T.-C.); (O.S.-F.)
| | - Jorge Escorihuela
- Departamento de Química Orgánica, Universitat de València, Av. Vicent Andrés Estellés s/n, Burjassot, 46100 Valencia, Spain
| | - Omar Solorza-Feria
- Department of Chemistry, Centro de Investigación y de Estudios Avanzados, Av. IPN 2508, Ciudad de México 07360, Mexico; (M.M.T.-C.); (O.S.-F.)
| | - Vicente Compañ
- Departamento de Termodinámica Aplicada (ETSII), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
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3
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Barjola A, Reyes-Rodríguez JL, Solorza-Feria O, Giménez E, Compañ V. Novel SPEEK-ZIF-67 Proton Exchange Nanocomposite Membrane for PEMFC Application at Intermediate Temperatures. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arturo Barjola
- Instituto de Tecnología de Materiales, Universitat Politècnica de València (UPV), Camino de Vera s/n, 46022 Valencia, Spain
| | - José Luis Reyes-Rodríguez
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del I.P.N. (CINVESTAV), Av. I.P.N. 2508, Col. Zacatenco, Delegación Gustavo A. Madero, C.P. 07360 Ciudad de México, México
| | - Omar Solorza-Feria
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del I.P.N. (CINVESTAV), Av. I.P.N. 2508, Col. Zacatenco, Delegación Gustavo A. Madero, C.P. 07360 Ciudad de México, México
| | - Enrique Giménez
- Instituto de Tecnología de Materiales, Universitat Politècnica de València (UPV), Camino de Vera s/n, 46022 Valencia, Spain
| | - Vicente Compañ
- Escuela Técnica Superior de Ingenieros Industriales, Departamento de Termodinámica Aplicada, Universitat Politècnica de València, Camino de Vera s/n, 46020 Valencia, Spain
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Zhen C, Lyu Z, Liu K, Chen X, Sun Y, Liao X, Xie S. Ultrasmall PdPtCo trimetallic nanorings with enriched low-coordinated edge sites and optimized compositions for effective oxygen reduction electrocatalysis. CrystEngComm 2021. [DOI: 10.1039/d1ce00693b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Ultrasmall two-dimensional Pd55Pt18Co27 trimetallic alloy nanorings with enriched low-coordinated edge sites exhibit greatly enhanced ORR electrocatalytic activity.
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Affiliation(s)
- Chao Zhen
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- China
| | - Zixi Lyu
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- China
| | - Kai Liu
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- China
| | - Xuejiao Chen
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- China
| | - Yu Sun
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- China
| | - Xinyan Liao
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- China
| | - Shuifen Xie
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- China
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5
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Nadeem M, Yasin G, Arif M, Bhatti MH, Sayin K, Mehmood M, Yunus U, Mehboob S, Ahmed I, Flörke U. Pt-Ni@PC900 Hybrid Derived from Layered-Structure Cd-MOF for Fuel Cell ORR Activity. ACS OMEGA 2020; 5:2123-2132. [PMID: 32064373 PMCID: PMC7016934 DOI: 10.1021/acsomega.9b02741] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Accepted: 12/06/2019] [Indexed: 05/22/2023]
Abstract
Fuel cell technology is the supreme alternate option for the replacement of fossil fuel in the current era. Pt alloys can perform well as fuel cell electrodes for being used as catalytic materials to perform the very notorious oxygen reduction reaction. In this regard, first, a layered metal-organic framework with empirical formula [C8H10CdO7] n ·4H2O is synthesized and characterized using various experimental and theoretical techniques. Then, a nanostructured porous carbon material with a sheet morphology (PC900) having a high BET surface area of 877 m2 g-1 is fabricated by an inert-atmosphere thermal treatment of the framework upon heating up to 900 °C. Pt and Ni nanoparticles are embedded into PC900 to prepare a homogenized hybrid functional material, i.e., Pt-Ni@PC900. The Pt-Ni@PC900 hybrid is proved to be an excellent ORR catalyst in terms of half-wave potential and limiting current density with 7% Pt loading compared with the commercially available 20% Pt/C catalyst. Pt-Ni@PC900 also shows stability of current up to 12 h with only a very small variation in current. This work highlights the importance of Pt alloys in future large-scale commercial applications of fuel cells.
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Affiliation(s)
- Muhammad Nadeem
- Department
of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
- State
Key Laboratory of Chemical Resource Engineering, Institute of Science,
and College of Energy, Beijing University
of Chemical Technology, Beijing 100029, P. R. China
- National
Center for Nanotechnology, Department of Metallurgy and Materials
Engineering, Pakistan Institute of Engineering
and Applied Sciences (PIEAS), Nilore, Islamabad 45650, Pakistan
| | - Ghulam Yasin
- State
Key Laboratory of Chemical Resource Engineering, Institute of Science,
and College of Energy, Beijing University
of Chemical Technology, Beijing 100029, P. R. China
| | - Muhammad Arif
- State
Key Laboratory of Chemical Resource Engineering, Institute of Science,
and College of Energy, Beijing University
of Chemical Technology, Beijing 100029, P. R. China
| | - Moazzam H. Bhatti
- Department
of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
- E-mail . Phone: 0092519057262
| | - Koray Sayin
- Department
of Chemistry, Institute of Science, Cumhuriyet
University, Sivas 58140, Turkey
| | - Mazhar Mehmood
- National
Center for Nanotechnology, Department of Metallurgy and Materials
Engineering, Pakistan Institute of Engineering
and Applied Sciences (PIEAS), Nilore, Islamabad 45650, Pakistan
| | - Uzma Yunus
- Department
of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
| | - Shoaib Mehboob
- National
Center for Nanotechnology, Department of Metallurgy and Materials
Engineering, Pakistan Institute of Engineering
and Applied Sciences (PIEAS), Nilore, Islamabad 45650, Pakistan
| | - Imtiaz Ahmed
- Department
of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
| | - Ulrich Flörke
- Anorganische
und Analytische Chemie, Fakultät für Naturwissenschaften, Universität Paderborn, Warburgerstrasse 100, Paderborn D-33098, Germany
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