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Hrnjić A, Kamšek AR, Bijelić L, Logar A, Maselj N, Smiljanić M, Trputec J, Vovk N, Pavko L, Ruiz-Zepeda F, Bele M, Jovanovič P, Hodnik N. Metal-Support Interaction between Titanium Oxynitride and Pt Nanoparticles Enables Efficient Low-Pt-Loaded High-Performance Electrodes at Relevant Oxygen Reduction Reaction Current Densities. ACS Catal 2024; 14:2473-2486. [PMID: 38384942 PMCID: PMC10877567 DOI: 10.1021/acscatal.3c03883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 01/16/2024] [Accepted: 01/23/2024] [Indexed: 02/23/2024]
Abstract
In the present work, we report on a synergistic relationship between platinum nanoparticles and a titanium oxynitride support (TiOxNy/C) in the context of oxygen reduction reaction (ORR) catalysis. As demonstrated herein, this composite configuration results in significantly improved electrocatalytic activity toward the ORR relative to platinum dispersed on carbon support (Pt/C) at high overpotentials. Specifically, the ORR performance was assessed under an elevated mass transport regime using the modified floating electrode configuration, which enabled us to pursue the reaction closer to PEMFC-relevant current densities. A comprehensive investigation attributes the ORR performance increase to a strong interaction between platinum and the TiOxNy/C support. In particular, according to the generated strain maps obtained via scanning transmission electron microscopy (STEM), the Pt-TiOxNy/C analogue exhibits a more localized strain in Pt nanoparticles in comparison to that in the Pt/C sample. The altered Pt structure could explain the measured ORR activity trend via the d-band theory, which lowers the platinum surface coverage with ORR intermediates. In terms of the Pt particle size effect, our observation presents an anomaly as the Pt-TiOxNy/C analogue, despite having almost two times smaller nanoparticles (2.9 nm) compared to the Pt/C benchmark (4.8 nm), manifests higher specific activity. This provides a promising strategy to further lower the Pt loading and increase the ECSA without sacrificing the catalytic activity under fuel cell-relevant potentials. Apart from the ORR, the platinum-TiOxNy/C interaction is of a sufficient magnitude not to follow the typical particle size effect also in the context of other reactions such as CO stripping, hydrogen oxidation reaction, and water discharge. The trend for the latter is ascribed to the lower oxophilicity of Pt-based on electrochemical surface coverage analysis. Namely, a lower surface coverage with oxygenated species is found for the Pt-TiOxNy/C analogue. Further insights were provided by performing a detailed STEM characterization via the identical location mode (IL-STEM) in particular, via 4DSTEM acquisition. This disclosed that Pt particles are partially encapsulated within a thin layer of TiOxNy origin.
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Affiliation(s)
- Armin Hrnjić
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
- University
of Nova Gorica, Vipavska
13, Nova Gorica 5000, Slovenia
| | - Ana Rebeka Kamšek
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
- Faculty
of Chemistry and Chemical Engineering, University
of Ljubljana, Večna
pot 113, Ljubljana 1000, Slovenia
| | - Lazar Bijelić
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
- University
of Nova Gorica, Vipavska
13, Nova Gorica 5000, Slovenia
| | - Anja Logar
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
- University
of Nova Gorica, Vipavska
13, Nova Gorica 5000, Slovenia
| | - Nik Maselj
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
- Faculty
of Chemistry and Chemical Engineering, University
of Ljubljana, Večna
pot 113, Ljubljana 1000, Slovenia
| | - Milutin Smiljanić
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
| | - Jan Trputec
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
- Faculty
of Chemistry and Chemical Engineering, University
of Ljubljana, Večna
pot 113, Ljubljana 1000, Slovenia
| | - Natan Vovk
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
- Faculty
of Chemistry and Chemical Engineering, University
of Ljubljana, Večna
pot 113, Ljubljana 1000, Slovenia
| | - Luka Pavko
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
- Faculty
of Chemistry and Chemical Engineering, University
of Ljubljana, Večna
pot 113, Ljubljana 1000, Slovenia
| | - Francisco Ruiz-Zepeda
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
| | - Marjan Bele
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
| | - Primož Jovanovič
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
| | - Nejc Hodnik
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova
19, Ljubljana 1000, Slovenia
- University
of Nova Gorica, Vipavska
13, Nova Gorica 5000, Slovenia
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2
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Yuan J, Zou J, Wu Z, Wang Z, Yang Z, Xu H. Bifunctional electrocatalytic reduction performance of nitrogen containing biomass based nanoreactors loaded with Ni nanoparticles for oxygen and carbon dioxide. NANOTECHNOLOGY 2024; 35:175402. [PMID: 37832530 DOI: 10.1088/1361-6528/ad0301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 10/13/2023] [Indexed: 10/15/2023]
Abstract
In the face of increasing energy demand, the approach of transformation that combines energy restructuring and environmental governance has become a popular research direction. As an important part of electrocatalytic reactions for gas molecules, reduction reactions of oxygen (ORR) and carbon dioxide (CO2RR) are very indispensable in the field of energy conversion and storage. However, the non-interchangeability and irreversibility of electrode materials have always been a challenge in electrocatalysis. Hereon, nickel and nitrogen decorated biomass carbon-based materials (Ni/N-BC) has been prepared by high temperature pyrolysis using agricultural waste straw as raw material. Surprisingly, it possesses abundant active sites and specific surface area as a bifunctional electrocatalyst for ORR and CO2RR. The three-dimensional porous cavity structure for the framework of biomass could not only provide a strong anchoring foundation for the active site, but also facilitate the transport and enrichment of reactants around the site. In addition, temperature modulation during the preparation process also optimizes the composition and structure of biomass carbon and nitrogen. Benefit from above structure and morphology advantages, Ni/N-BC-800 exhibits the superior electrocatalytic activity for both ORR and CO2RR simultaneously. More specifically, Ni/N-BC-800 exhibits satisfactory ORR activity in terms of initial potential and half wave potential, while also enables the production of CO under high selective. The research results provide ideas for the development and design of electrode materials and green electrocatalysts, and also expand new applications of agricultural waste in fields such as energy conversion, environmental protection, and resource utilization.
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Affiliation(s)
- Junjie Yuan
- School of Agricultural Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, Jiangsu, 212013, People's Republic of China
| | - Jiayi Zou
- School of Agricultural Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, Jiangsu, 212013, People's Republic of China
| | - Zhongqiu Wu
- School of Agricultural Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, Jiangsu, 212013, People's Republic of China
| | - Zhaolong Wang
- School of Agricultural Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, Jiangsu, 212013, People's Republic of China
| | - Zongli Yang
- School of Agricultural Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, Jiangsu, 212013, People's Republic of China
| | - Hui Xu
- School of Agricultural Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, Jiangsu, 212013, People's Republic of China
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3
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Bezerra LS, Mooste M, Fortunato GV, S. F. Cardoso E, R. V. Lanza M, Tammeveski K, Maia G. Tuning NiCo2O4 bifunctionality with nitrogen-doped graphene nanoribbons in oxygen electrocatalysis for zinc-air battery application. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.117000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Xu ML, Chen W, Liao LW, Wei Z, Cai J, Chen YX. Identifying diffusion limiting current to unravel the intrinsic kinetics of electrode reactions affected by mass transfer at rotating disk electrode. CHINESE J CHEM PHYS 2022. [DOI: 10.1063/1674-0068/cjcp2006085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Rotating disk electrode systems are widely used to study the kinetics of electrocatalytic reactions that may suffer from insufficient mass transfer of the reactants. Kinetic current density at certain overpotential calculated by the Koutecky-Levich equation is commonly used as the metrics to evaluate the activity of electrocatalysts. However, it is frequently found that the diffusion limiting current density is not correctly identified in the literatures. Instead of kinetic current density, the measured current density normalized by diffusion limiting current density ( j/ jL) has also been frequently under circumstance where its validity is not justified. By taking oxygen reduction reaction/hydrogen oxidation reaction/hydrogen evolution reaction as examples, we demonstrate that identifying the actual diffusion limiting current density for the same reaction under otherwise identical conditions from the experimental data is essential to accurately deduce kinetic current density. Our analysis reveals that j/ jL is a rough activity metric which can only be used to qualitatively compare the activity trend under conditions that the mass transfer conditions and the roughness factor of the electrode are exactly the same. In addition, if one wants to use j/ jL to compare the intrinsic activity, the concentration overpotential should be eliminated.
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Affiliation(s)
- Mian-le Xu
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Wei Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Ling-wen Liao
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Zhen Wei
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Jun Cai
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Yan-xia Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
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5
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Du J, Quinson J, Zana A, Arenz M. Elucidating Pt-Based Nanocomposite Catalysts for the Oxygen Reduction Reaction in Rotating Disk Electrode and Gas Diffusion Electrode Measurements. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01496] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jia Du
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland
| | - Jonathan Quinson
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Alessandro Zana
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland
| | - Matthias Arenz
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland
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6
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Fortunato GV, Cardoso ESF, Martini BK, Maia G. Ti/Pt−Pd‐Based Nanocomposite: Effects of Metal Oxides on the Oxygen Reduction Reaction. ChemElectroChem 2020. [DOI: 10.1002/celc.202000268] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guilherme V. Fortunato
- Institute of Chemistry Universidade Federal de Mato Grosso do Sul Av. Senador Filinto Muller, 1555 Campo Grande MS 79074-460 Brazil
| | - Eduardo S. F. Cardoso
- Institute of Chemistry Universidade Federal de Mato Grosso do Sul Av. Senador Filinto Muller, 1555 Campo Grande MS 79074-460 Brazil
| | - Bibiana K. Martini
- Institute of Chemistry Universidade Federal de Mato Grosso do Sul Av. Senador Filinto Muller, 1555 Campo Grande MS 79074-460 Brazil
| | - Gilberto Maia
- Institute of Chemistry Universidade Federal de Mato Grosso do Sul Av. Senador Filinto Muller, 1555 Campo Grande MS 79074-460 Brazil
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7
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Gómez-Marín AM, Feliu JM, Ticianelli E. Oxygen Reduction on Platinum Surfaces in Acid Media: Experimental Evidence of a CECE/DISP Initial Reaction Path. ACS Catal 2019. [DOI: 10.1021/acscatal.8b03351] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ana M. Gómez-Marín
- Instituto de Química de São Carlos, Universidade de São Paulo, Caixa
Postal 780, Fisico Quimica, Av. Trabalhador Sao Carlense, São Carlos CEP 13560-970, SP, Brazil
- Department of Chemistry, Division of Fundamental Sciences (IEF), Technological Institute of Aeronautics (ITA), São José dos Campos CEP 12228-900, SP, Brazil
| | - Juan M. Feliu
- Instituto de Electroquímica, Universidad de Alicante, Apt 99, E-03080 Alicante, Spain
| | - Edson Ticianelli
- Instituto de Química de São Carlos, Universidade de São Paulo, Caixa
Postal 780, Fisico Quimica, Av. Trabalhador Sao Carlense, São Carlos CEP 13560-970, SP, Brazil
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8
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Oxygen Reduction Reaction on Polycrystalline Platinum: On the Activity Enhancing Effect of Polyvinylidene Difluoride. SURFACES 2019. [DOI: 10.3390/surfaces2010007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
There have been several reports concerning the performance improving properties of additives, such as polyvinylidene difluoride (PVDF), to the membrane or electrocatalyst layer of proton exchange membrane fuel cells (PEMFC). However, it is not clear if the observed performance enhancement is due to kinetic, mass transport, or anion blocking effects of the PVDF. In a previous investigation using a thin-film rotating disk electrode (RDE) approach (of decreased complexity as compared to membrane electrode assembly (MEA) tests), a performance increase for the oxygen reduction reaction (ORR) could be confirmed. However, even in RDE measurements, reactant mass transport in the catalyst layer cannot be neglected. Therefore, in the present study, the influence of PVDF is re-examined by coating polycrystalline bulk Pt electrodes by PVDF and measuring ORR activity. The results on polycrystalline bulk Pt indicate that the effects of PVDF on the reaction kinetics and anion adsorption are limited, and that the observed performance increase on high surface area Pt/C most likely is due to an erroneous estimation of the electrochemical active surface area (ECSA) from CO stripping and Hupd.
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Reyes-Rodríguez JL, Velázquez-Osorio A, Bahena-Uribe D, Soto-Guzmán AB, Leyva MA, Rodríguez-Castellanos A, Citalán-Cigarroa S, Solorza-Feria O. Tailoring the morphology of Ni–Pt nanocatalysts through the variation of oleylamine and oleic acid: a study on oxygen reduction from synthesis to fuel cell application. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00419j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Systematic study on the variation of morphology, size and composition of Ni–Pt nanoparticles with higher catalytic activity towards oxygen reduction.
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Affiliation(s)
- J. L. Reyes-Rodríguez
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados del I.P.N. (CINVESTAV)
- Ciudad de México
- Mexico
| | - A. Velázquez-Osorio
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados del I.P.N. (CINVESTAV)
- Ciudad de México
- Mexico
| | - D. Bahena-Uribe
- Laboratorio Avanzado de Nanoscopía Electrónica (LANE)
- CINVESTAV
- Mexico
| | | | - M. A. Leyva
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados del I.P.N. (CINVESTAV)
- Ciudad de México
- Mexico
| | - A. Rodríguez-Castellanos
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados del I.P.N. (CINVESTAV)
- Ciudad de México
- Mexico
| | - S. Citalán-Cigarroa
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados del I.P.N. (CINVESTAV)
- Ciudad de México
- Mexico
| | - O. Solorza-Feria
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados del I.P.N. (CINVESTAV)
- Ciudad de México
- Mexico
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10
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Jovanovič P, Petek U, Hodnik N, Ruiz-Zepeda F, Gatalo M, Šala M, Šelih VS, Fellinger TP, Gaberšček M. Importance of non-intrinsic platinum dissolution in Pt/C composite fuel cell catalysts. Phys Chem Chem Phys 2018; 19:21446-21452. [PMID: 28759065 DOI: 10.1039/c7cp03192k] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The dissolution of different platinum-based nanoparticles deposited on a commercial high-surface area carbon (HSAC) support in thin catalyst films is investigated using a highly sensitive electrochemical flow cell (EFC) coupled to an inductively coupled plasma mass spectrometer (ICP-MS). The previously reported particle-size-dependent dissolution of Pt is confirmed on selected industrial samples with a mean Pt particle size ranging from 1 to 4.8 nm. This trend is significantly altered when a catalyst is diluted by the addition of HSAC. This indicates that the intrinsic dissolution properties are masked by local oversaturation phenomena, the so-called confinement effect. Furthermore, by replacing the standard HSAC support with a support having an order of magnitude higher specific surface area (a micro- and mesoporous nitrogen-doped high surface area carbon, HSANDC), Pt dissolution is reduced even further. This is due to the so-called non-intrinsic confinement and entrapment effects of the (large amount of) micropores and small mesopores doped with N atoms. The observed more effective Pt re-deposition is presumably induced by local Pt oversaturation and the presence of nitrogen nucleation sites. Overall, our study demonstrates the high importance and beneficial effects of porosity, loading and N doping of the carbon support on the Pt stability in the catalyst layer.
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Affiliation(s)
- Primož Jovanovič
- Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia. and Department of Analytical Chemistry, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
| | - Urša Petek
- Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia. and Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Nejc Hodnik
- Department of Catalysis and Chemical reaction Engineering, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
| | - Francisco Ruiz-Zepeda
- Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia.
| | - Matija Gatalo
- Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia. and Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Martin Šala
- Department of Analytical Chemistry, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
| | - Vid Simon Šelih
- Department of Analytical Chemistry, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
| | - Tim Patrick Fellinger
- Max Planck Institute of Colloids and Interfaces, Colloids Department, Am Mühlenberg 1, Potsdam, Germany
| | - Miran Gaberšček
- Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia. and Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
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11
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Xu S, Kim Y, Higgins D, Yusuf M, Jaramillo TF, Prinz FB. Building upon the Koutecky-Levich Equation for Evaluation of Next-Generation Oxygen Reduction Reaction Catalysts. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.09.145] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Pt–Pd and Pt–Pd–(Cu or Fe or Co)/graphene nanoribbon nanocomposites as efficient catalysts toward the oxygen reduction reaction. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.06.160] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Son DN, Van Cao P, Hanh TTT, Chihaia V, Pham-Ho MP. Influences of Electrode Potential on Mechanism of Oxygen Reduction Reaction on Pd-Skin/Pd3Fe(111) Electrocatalyst: Insights from DFT-Based Calculations. Electrocatalysis (N Y) 2017. [DOI: 10.1007/s12678-017-0412-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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Moniri S, Van Cleve T, Linic S. Pitfalls and best practices in measurements of the electrochemical surface area of platinum-based nanostructured electro-catalysts. J Catal 2017. [DOI: 10.1016/j.jcat.2016.11.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Deng YJ, Wiberg GKH, Zana A, Sun SG, Arenz M. Tetrahexahedral Pt Nanoparticles: Comparing the Oxygen Reduction Reaction under Transient vs Steady-State Conditions. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02201] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yu-Jia Deng
- Nano-Science
Center, Department of Chemistry, University of Copenhagen, Universitetsparken
5, DK-2100 Copenhagen
Ø, Denmark
- Department
of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People’s Republic of China
| | - Gustav Karl Henrik Wiberg
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, 3012 Bern, Switzerland
| | - Alessandro Zana
- Nano-Science
Center, Department of Chemistry, University of Copenhagen, Universitetsparken
5, DK-2100 Copenhagen
Ø, Denmark
| | - Shi-Gang Sun
- Department
of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People’s Republic of China
| | - Matthias Arenz
- Nano-Science
Center, Department of Chemistry, University of Copenhagen, Universitetsparken
5, DK-2100 Copenhagen
Ø, Denmark
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, 3012 Bern, Switzerland
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16
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Platinum recycling going green via induced surface potential alteration enabling fast and efficient dissolution. Nat Commun 2016; 7:13164. [PMID: 27767178 PMCID: PMC5078734 DOI: 10.1038/ncomms13164] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 09/05/2016] [Indexed: 01/23/2023] Open
Abstract
The recycling of precious metals, for example, platinum, is an essential aspect of sustainability for the modern industry and energy sectors. However, due to its resistance to corrosion, platinum-leaching techniques rely on high reagent consumption and hazardous processes, for example, boiling aqua regia; a mixture of concentrated nitric and hydrochloric acid. Here we demonstrate that complete dissolution of metallic platinum can be achieved by induced surface potential alteration, an 'electrode-less' process utilizing alternatively oxidative and reductive gases. This concept for platinum recycling exploits the so-called transient dissolution mechanism, triggered by a repetitive change in platinum surface oxidation state, without using any external electric current or electrodes. The effective performance in non-toxic low-concentrated acid and at room temperature is a strong benefit of this approach, potentially rendering recycling of industrial catalysts, including but not limited to platinum-based systems, more sustainable.
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17
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Shinozaki K, Morimoto Y, Pivovar BS, Kocha SS. Re-examination of the Pt Particle Size Effect on the Oxygen Reduction Reaction for Ultrathin Uniform Pt/C Catalyst Layers without Influence from Nafion. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.08.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Evaluation of Oxygen Reduction Activity by the Thin-Film Rotating Disk Electrode Methodology: the Effects of Potentiodynamic Parameters. Electrocatalysis (N Y) 2016. [DOI: 10.1007/s12678-016-0309-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Shao M, Chang Q, Dodelet JP, Chenitz R. Recent Advances in Electrocatalysts for Oxygen Reduction Reaction. Chem Rev 2016; 116:3594-657. [DOI: 10.1021/acs.chemrev.5b00462] [Citation(s) in RCA: 2698] [Impact Index Per Article: 337.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Minhua Shao
- Department
of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Qiaowan Chang
- Department
of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Jean-Pol Dodelet
- INRS-Énergie, Matériaux et Télécommunications, 1650, boulevard Lionel Boulet, Varennes, Quebec J3X 1S2, Canada
| | - Regis Chenitz
- INRS-Énergie, Matériaux et Télécommunications, 1650, boulevard Lionel Boulet, Varennes, Quebec J3X 1S2, Canada
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