1
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Han HH, Kim SK, Kim SJ, Choi I, Mok JW, Joo CK, Shin S, Hahn SK. Long-term stable wireless smart contact lens for robust digital diabetes diagnosis. Biomaterials 2023; 302:122315. [PMID: 37689048 DOI: 10.1016/j.biomaterials.2023.122315] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/01/2023] [Accepted: 09/02/2023] [Indexed: 09/11/2023]
Abstract
Wearable devices for digital continuous glucose monitoring (CGM) have attracted great attention as a new paradigm medical device for diabetes management. However, the relatively inaccurate performance and instability of CGM devices have limited their wide applications in the clinic. Here, we developed hyaluronate (HA) modified Au@Pt bimetallic electrodes for long-term accurate and robust CGM of smart contact lens. After glucose oxidation reaction, the bimetallic electrodes facilitated the rapid decomposition of hydrogen peroxide and charge transfer for robust CGM. The passivation of Au@Pt bimetallic electrode with branch-type thiolated HA prevented the dissolution of Au electrode by chloride ions in tears. In diabetic and normal rabbits, the smart contact lens with HA-Au@Pt bimetallic electrodes enabled the high correlation (ρ = 0.88) CGM with 98.6% clinically acceptable data for 3 weeks. Taken together, we could confirm the feasibility of our smart contact lens for long-term CGM for further clinical development.
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Affiliation(s)
- Hye Hyeon Han
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, South Korea.
| | - Su-Kyung Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, South Korea
| | - Seong-Jong Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, South Korea
| | - Inhoo Choi
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, South Korea
| | - Jee Won Mok
- Department of Ophthalmology and Visual Science, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 505, Banpo-dong, Seocho-gu, Seoul, 06591, South Korea
| | - Choun-Ki Joo
- Department of Ophthalmology and Visual Science, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 505, Banpo-dong, Seocho-gu, Seoul, 06591, South Korea
| | - Sangbaie Shin
- PHI BIOMED Co., #613, 12 Gangnam-daero 65-gil, Seocho-gu, Seoul, 06612, South Korea
| | - Sei Kwang Hahn
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, South Korea; PHI BIOMED Co., #613, 12 Gangnam-daero 65-gil, Seocho-gu, Seoul, 06612, South Korea.
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2
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Kong F, Liu X, Song Y, Qian Z, Li J, Zhang L, Yin G, Wang J, Su D, Sun X. Selectively Coupling Ru Single Atoms to PtNi Concavities for High‐Performance Methanol Oxidation via
d
‐Band Center Regulation. Angew Chem Int Ed Engl 2022; 61:e202207524. [DOI: 10.1002/anie.202207524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Fanpeng Kong
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage Harbin Institute of Technology Harbin China
- Department of Mechanical and Materials Engineering University of Western Ontario London Canada
| | - Xiaozhi Liu
- Institute of Physics Chinese Academy of Sciences Beijing China
| | - Yajie Song
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage Harbin Institute of Technology Harbin China
| | - Zhengyi Qian
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage Harbin Institute of Technology Harbin China
| | - Junjie Li
- Department of Mechanical and Materials Engineering University of Western Ontario London Canada
| | - Lei Zhang
- Department of Mechanical and Materials Engineering University of Western Ontario London Canada
| | - Geping Yin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage Harbin Institute of Technology Harbin China
| | - Jiajun Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage Harbin Institute of Technology Harbin China
- Chongqing Research Institute Harbin Institute of Technology Chongqing China
| | - Dong Su
- Institute of Physics Chinese Academy of Sciences Beijing China
| | - Xueliang Sun
- Department of Mechanical and Materials Engineering University of Western Ontario London Canada
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3
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Kong F, Liu X, Song Y, Qian Z, Li J, Zhang L, Yin G, Su D, Wang J, Sun X. Selectively Coupling Ru Single Atoms to PtNi Concavities for High Performance Methanol Oxidation via d‐Band Center Regulation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Fanpeng Kong
- Harbin Institute of Technology MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage No. 92, Xidazhi street 150000 Harbin CHINA
| | - Xiaozhi Liu
- Chinese Academy of Sciences Institute of Physics CHINA
| | - Yajie Song
- Harbin Institute of Technology MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage CHINA
| | - Zhengyi Qian
- Harbin Institute of Technology MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage CHINA
| | - Junjie Li
- Western University Department of Mechanical and Materials Engineering CANADA
| | - Lei Zhang
- Western University Department of Mechanical and Materials Engineering CANADA
| | - Geping Yin
- Harbin Institute of Technology MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage CHINA
| | - Dong Su
- Chinese Academy of Sciences Institute of Physics CANADA
| | - Jiajun Wang
- Harbin Institute of Technology MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage CHINA
| | - Xueliang Sun
- Western University 1151 Richmond Street N6A 3K7 London CANADA
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4
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Zhang M, Guo X. Gold/platinum bimetallic nanomaterials for immunoassay and immunosensing. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214578] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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5
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Du J, Quinson J, Zhang D, Wang B, Wiberg GKH, Pittkowski RK, Schröder J, Simonsen SB, Kirkensgaard JJK, Li Y, Reichenberger S, Barcikowski S, Jensen KMØ, Arenz M. Nanocomposite Concept for Electrochemical In Situ Preparation of Pt-Au Alloy Nanoparticles for Formic Acid Oxidation. JACS AU 2022; 2:1757-1768. [PMID: 35911453 PMCID: PMC9327087 DOI: 10.1021/jacsau.2c00335] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Herein, we report a straightforward approach for the in situ preparation of Pt-Au alloy nanoparticles from Pt + xAu/C nanocomposites using monometallic colloidal nanoparticles as starting blocks. Four different compositions with fixed Pt content and varying Pt to Au mass ratios from 1:1 up to 1:7 were prepared as formic acid oxidation reaction (FAOR) catalysts. The study was carried out in a gas diffusion electrode (GDE) setup. It is shown that the presence of Au in the nanocomposites substantially improves the FAOR activity with respect to pure Pt/C, which serves as a reference. The nanocomposite with a mass ratio of 1:5 between Pt and Au displays the best performance during potentiodynamic tests, with the electro-oxidation rates, overpotential, and poisoning resistance being improved simultaneously. By comparison, too low or too high Au contributions in the nanocomposites lead to an unbalanced performance in the FAOR. The combination of operando small-angle X-ray scattering (SAXS), scanning transmission electron microscopy (STEM) elemental mapping, and wide-angle X-ray scattering (WAXS) reveals that for the nanocomposite with a 1:5 mass ratio, a conversion between Pt and Au from separate nanoparticles to alloy nanoparticles occurs during continuous potential cycling in formic acid. By comparison, the nanocomposites with lower Au contents, for example, 1:2, exhibit less in situ alloying, and the concomitant performance improvement is less pronounced. On applying identical location transmission electron microscopy (IL-TEM), it is revealed that the in situ alloying is due to Pt dissolution and re-deposition onto Au as well as Pt migration and coalescence with Au nanoparticles.
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Affiliation(s)
- Jia Du
- Department of Chemistry,
Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland
| | - Jonathan Quinson
- Department of Chemistry, University of
Copenhagen, 2100 Copenhagen, Denmark
- Department of Biochemical and Chemical Engineering, University of Aarhus, 8200 Aarhus, Denmark
| | - Damin Zhang
- Department of Chemistry,
Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland
| | - Baiyu Wang
- Department of Chemistry, University of
Copenhagen, 2100 Copenhagen, Denmark
| | - Gustav K. H. Wiberg
- Department of Chemistry,
Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland
| | | | - Johanna Schröder
- Department of Chemistry,
Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland
| | - Søren B. Simonsen
- Department of Energy
Conversion and Storage, Technical University
of Denmark, 2800 Lyngby, Denmark
| | - Jacob J. K. Kirkensgaard
- Department of Food
Science, University of Copenhagen, 1958 Frederiksberg, Denmark
- Niels-Bohr-Institute, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Yao Li
- Technical Chemistry I and Center of Nanointegration Duisburg Essen
(CENIDE), University of Duisburg-Essen, 45141 Essen, Germany
| | - Sven Reichenberger
- Technical Chemistry I and Center of Nanointegration Duisburg Essen
(CENIDE), University of Duisburg-Essen, 45141 Essen, Germany
| | - Stephan Barcikowski
- Technical Chemistry I and Center of Nanointegration Duisburg Essen
(CENIDE), University of Duisburg-Essen, 45141 Essen, Germany
| | | | - Matthias Arenz
- Department of Chemistry,
Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland
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6
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Kim SK, Lee GH, Jeon C, Han HH, Kim SJ, Mok JW, Joo CK, Shin S, Sim JY, Myung D, Bao Z, Hahn SK. Bimetallic Nanocatalysts Immobilized in Nanoporous Hydrogels for Long-Term Robust Continuous Glucose Monitoring of Smart Contact Lens. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2110536. [PMID: 35194844 PMCID: PMC10782562 DOI: 10.1002/adma.202110536] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 02/12/2022] [Indexed: 05/26/2023]
Abstract
Smart contact lenses for continuous glucose monitoring (CGM) have great potential for huge clinical impact. To date, their development has been limited by challenges in accurate detection of glucose without hysteresis for tear glucose monitoring to track the blood glucose levels. Here, long-term robust CGM in diabetic rabbits is demonstrated by using bimetallic nanocatalysts immobilized in nanoporous hydrogels in smart contact lenses. After redox reaction of glucose oxidase, the nanocatalysts facilitate rapid decomposition of hydrogen peroxide and nanoparticle-mediated charge transfer with drastically improved diffusion via rapid swelling of nanoporous hydrogels. The ocular glucose sensors result in high sensitivity, fast response time, low detection limit, low hysteresis, and rapid sensor warming-up time. In diabetic rabbits, smart contact lens can detect tear glucose levels consistent with blood glucose levels measured by a glucometer and a CGM device, reflecting rapid concentration changes without hysteresis. The CGM in a human demonstrates the feasibility of smart contact lenses for further clinical applications.
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Affiliation(s)
- Su-Kyoung Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Geon-Hui Lee
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Cheonhoo Jeon
- Department of Electrical Enginnering, POSTECH, 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Hye Hyeon Han
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Seong-Jong Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Jee Won Mok
- Department of Ophthalmology and Visual Science, Seoul St. Mary's Hospital, Collage of Medicine, The Catholic University of Korea, 505, Banpo-dong, Seocho-gu, Seoul, 06591, Korea
| | - Choun-Ki Joo
- Department of Ophthalmology and Visual Science, Seoul St. Mary's Hospital, Collage of Medicine, The Catholic University of Korea, 505, Banpo-dong, Seocho-gu, Seoul, 06591, Korea
| | - Sangbaie Shin
- PHI BIOMED Co., 168, Yeoksam-ro, Gangnam-gu, Seoul, 06248, Korea
| | - Jae-Yoon Sim
- Department of Electrical Enginnering, POSTECH, 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - David Myung
- Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, CA, 94305, USA
- Byers Eye Institute at Stanford University School of Medicine, Palo Alto, CA, 94303, USA
| | - Zhenan Bao
- Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, CA, 94305, USA
| | - Sei Kwang Hahn
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
- PHI BIOMED Co., 168, Yeoksam-ro, Gangnam-gu, Seoul, 06248, Korea
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7
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Covalent Triazine Framework Encapsulated Pd Nanoclusters for Efficient Hydrogen Production via Ammonia Borane Hydrolysis. J Catal 2022. [DOI: 10.1016/j.jcat.2022.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Trembułowicz A, Sabik A, Jurczyszyn L. Structural and electronic properties of Pt modified Au(100) surface. Sci Rep 2022; 12:3859. [PMID: 35264635 PMCID: PMC8907180 DOI: 10.1038/s41598-022-07617-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 02/22/2022] [Indexed: 11/09/2022] Open
Abstract
Investigations on electronic and geometric structures of platinum adsorbed on monocrystalline gold surfaces are important for understanding the remarkable catalytic properties of bimetallic Pt-Au systems. Herein, the morphology of quasi-hexagonal (hex) Au(100) surface after deposition of platinum for coverage up to 0.5 monolayer (ML) has been investigated by scanning tunneling microscopy (STM). For coverage range 0.2-0.4 ML the creation of elongated islands with mono-atomic height is observed. The islands consist of flat phase of disordered Pt-Au alloy which coexists with nanowire-like features with a hex atom arrangement and quantized width. Annealing the Pt/Au(100) system at 100-150 °C changes the surface morphology. The islands disappear and the topmost layer of the surface consists of flat phase of Pt-Au alloy which coexists with the hex-stripes. Small domains of ordered c(2 × 2) structure of Pt-Au alloy are found. The electronic properties of this structure have been investigated by ab-initio calculations. The obtained results allow to distinguish the Pt from Au atoms by their appearance in the STM images. The calculated electronic structures indicate a bonding creation between Pt and Au atoms and an electron d-states redistribution of Pt in comparison to the bare Pt(100)-(1 × 1) surface.
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Affiliation(s)
- Artur Trembułowicz
- University of Wroclaw, Faculty of Physics and Astronomy, Institute of Experimental Physics, Pl. Maxa Borna 9, 50-204, Wroclaw, Poland.
| | - Agata Sabik
- University of Wroclaw, Faculty of Physics and Astronomy, Institute of Experimental Physics, Pl. Maxa Borna 9, 50-204, Wroclaw, Poland
| | - Leszek Jurczyszyn
- University of Wroclaw, Faculty of Physics and Astronomy, Institute of Experimental Physics, Pl. Maxa Borna 9, 50-204, Wroclaw, Poland
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9
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Au/Pt Bimetallic Nanoparticle Decorated Microparticle Hybrid Catalyst System for Heterogeneous Hydrogenation of Styrene. Catal Letters 2021. [DOI: 10.1007/s10562-021-03599-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Surface lattice engineering for fine-tuned spatial configuration of nanocrystals. Nat Commun 2021; 12:5661. [PMID: 34580299 PMCID: PMC8476615 DOI: 10.1038/s41467-021-25969-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 09/02/2021] [Indexed: 11/09/2022] Open
Abstract
Hybrid nanocrystals combining different properties together are important multifunctional materials that underpin further development in catalysis, energy storage, et al., and they are often constructed using heterogeneous seeded growth. Their spatial configuration (shape, composition, and dimension) is primarily determined by the heterogeneous deposition process which depends on the lattice mismatch between deposited material and seed. Precise control of nanocrystals spatial configuration is crucial to applications, but suffers from the limited tunability of lattice mismatch. Here, we demonstrate that surface lattice engineering can be used to break this bottleneck. Surface lattices of various Au nanocrystal seeds are fine-tuned using this strategy regardless of their shape, size, and crystalline structure, creating adjustable lattice mismatch for subsequent growth of other metals; hence, diverse hybrid nanocrystals with fine-tuned spatial configuration can be synthesized. This study may pave a general approach for rationally designing and constructing target nanocrystals including metal, semiconductor, and oxide.
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11
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Lee H, Kim YJ, Sohn Y, Rhee CK. Pt Deposits on Bi-Modified Pt Electrodes of Nanoparticle and Disk: A Contrasting Behavior of Formic Acid Oxidation. J ELECTROCHEM SCI TE 2021. [DOI: 10.33961/jecst.2021.00178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
This work presents a contrasting behavior of formic acid oxidation (FAO) on the Pt and Bi deposits on different Pt substrates. Using irreversible adsorption method, Bi and Pt were sequentially deposited on Pt electrodes of nanoparticle (Pt NP) and disk (Pt disk). The deposited layers of Bi and Pt on the Pt substrates were characterized with X-ray photoelectron spectroscopy, transmission microscopy and scanning tunneling microscopy. The electrochemical behaviors and FAO enhancements of Pt NP and Pt disk with deposited Bi only (i.e., Bi/Pt NP and Bi/Pt disk), were similar to each other. However, additional deposition of Pt on Bi/Pt NP and Bi/Pt disk (i.e., Pt/Bi/Pt NP and Pt/Bi/Pt disk) changed the electrochemical behavior and FAO activity in different ways depending on the shapes of the Pt substrates. With Pt/Bi/Pt NP, the hydrogen adsorption was suppressed and the surface oxidation of Pt was enhanced; while with Pt/Bi/Pt disk, the opposite behavior was observed. This difference was interpreted as a stronger interaction between the deposited Bi and Pt on Pt NP than that on Pt disk. The FAO performance on Pt/Bi/Pt NP is much better than that on Pt/Bi/Pt disk, most likely due to the difference in the interaction between the deposited Pt and Bi depending on the shapes of Pt substrates. In designing FAO electrochemical catalysts using Pt and Bi, the shape of a Pt substrate was concluded to be critically considered.
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12
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PT-BI Co-Deposit Shell on AU Nanoparticle Core: High Performance and Long Durability for Formic Acid Oxidation. Catalysts 2021. [DOI: 10.3390/catal11091049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This work presents the catalysts of Pt-Bi shells on Au nanoparticle cores and Pt overlayers on the Pt-Bi shells toward formic acid oxidation (FAO). Pt and Bi were co-deposited on Au nanoparticles (Au NP) via the irreversible adsorption method using a mixed precursor solution of Pt and Bi ions, and the amount of the co-deposits was controlled with the repetition of the deposition cycle. Rinsing of the co-adsorbed ionic layers of Pt and Bi with a H2SO4 solution selectively removed the Bi ions to leave Pt-rich and Bi-lean (<0.4 atomic %) co-deposits on Au NP (Pt-Bi/Au NP), conceptually similar to de-alloying. Additional Pt was deposited over Pt-Bi/Au NPs (Pt/Pt-Bi/Au NPs) to manipulate further the physicochemical properties of Pt-Bi/Au NPs. Transmission electron microscopy revealed the core–shell structures of Pt-Bi/Au NPs and Pt/Pt-Bi/Au NPs, whose shell thickness ranged from roughly four to six atomic layers. Moreover, the low crystallinity of the Pt-containing shells was confirmed with X-ray diffraction. Electrochemical studies showed that the surfaces of Pt-Bi/Au NPs were characterized by low hydrogen adsorption abilities, which increased after the deposition of additional Pt. Durability tests were carried out with 1000 voltammetric cycles between −0.26 and 0.4 V (versus Ag/AgCl) in a solution of 1.0 M HCOOH + 0.1 M H2SO4. The initial averaged FAO performance on Pt-Bi/Au NPs and Pt/Pt-Bi/Au NPs (0.11 ± 0.01 A/mg, normalized to the catalyst weight) was higher than that of a commercial Pt nanoparticle catalyst (Pt NP, 0.023 A/mg) by a factor of ~5, mainly due to enhancement of dehydrogenation and suppression of dehydration. The catalytic activity of Pt/Pt-Bi/Au NP (0.04 ± 0.01 A/mg) in the 1000th cycle was greater than that of Pt-Bi/Au NP (0.026 ± 0.003 A/mg) and that of Pt NP (0.006 A/mg). The reason for the higher durability was suggested to be the low mobility of surface Pt atoms on the investigated catalysts.
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13
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Tojo C, Buceta D, López-Quintela MA. Insight into the surface composition of bimetallic nanocatalysts obtained from microemulsions. J Colloid Interface Sci 2021; 602:367-375. [PMID: 34139534 DOI: 10.1016/j.jcis.2021.06.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/02/2021] [Accepted: 06/07/2021] [Indexed: 10/21/2022]
Abstract
The enhancement of catalysts efficiency of bimetallic nanoparticles depends on the ability to exert control over surface composition. However, results relating surface composition and feeding solution of bimetallic nanoparticles synthesized in microemulsions are controversial and apparently contradictory. In order to comprehend how the resulting surface can be modified under different synthesis conditions and for different pairs of metals, a computer simulation study was carried out. The resulting surface compositions are explained based on the relative rates of deposition of the two metals, which depend on the particular metal pair, the concentration of reactants and the microemulsion composition. This study provides a satisfactory understanding of experimental results and allows us to identify the main factors affecting the nanoparticle's surface composition. Consequently, concrete and practical guidelines can be established to facilitate the experimental synthesis of bimetallic nanoparticles with tailored surfaces.
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Affiliation(s)
- C Tojo
- Departmento de Química Física, Universidade de Vigo, E-36310 Vigo, Spain.
| | - D Buceta
- Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - M A López-Quintela
- Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
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14
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Wang S, Yan B, Chai J, Li T, Yu H, Li T, Cao P, Yang F, Yuan X, Yin H. Rhodium Encapsulated within Silicalite‐1 Zeolite as Highly Efficient Catalyst for Nitrous Oxide Decomposition: From Single Atoms to Nanoclusters and Nanoparticles. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100106] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shiwei Wang
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Ningbo Zhejiang 315201 P. R. China
| | - Bo Yan
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Ningbo Zhejiang 315201 P. R. China
| | - Juan Chai
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Ningbo Zhejiang 315201 P. R. China
| | - Tianhao Li
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Ningbo Zhejiang 315201 P. R. China
| | - Hongbo Yu
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Ningbo Zhejiang 315201 P. R. China
| | - Tong Li
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Ningbo Zhejiang 315201 P. R. China
| | - Peng Cao
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Ningbo Zhejiang 315201 P. R. China
| | - Fan Yang
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Ningbo Zhejiang 315201 P. R. China
| | - Xuemin Yuan
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Ningbo Zhejiang 315201 P. R. China
| | - Hongfeng Yin
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 1219 Zhongguan West Road Ningbo Zhejiang 315201 P. R. China
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15
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Zheng Y, Ma Y, Zhang G, Zhao W, Liu F, Liu M. Construction of AuPdPt spherical nanodendrites with a multilayered structure by manipulating etching and regrowth in seeded growth. CrystEngComm 2021. [DOI: 10.1039/d1ce00894c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Size-tunable gold–palladium–platinum nanodendrites with a multilayered structure are successfully prepared via etching–regrowth-involved seeded growth, exhibiting superb electrochemical activity for formic acid oxidation.
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Affiliation(s)
- Yiqun Zheng
- School of Chemistry, Chemical Engineering, and Materials, Jining University, Qufu, Shandong 237000, P. R. China
| | - Yanyun Ma
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Gongguo Zhang
- School of Chemistry, Chemical Engineering, and Materials, Jining University, Qufu, Shandong 237000, P. R. China
| | - Wenjun Zhao
- School of Chemistry, Chemical Engineering, and Materials, Jining University, Qufu, Shandong 237000, P. R. China
| | - Feng Liu
- International Research Center for Renewable Energy, National Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shanxi 710049, China
| | - Maochang Liu
- International Research Center for Renewable Energy, National Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shanxi 710049, China
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16
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Chen Y, Qiao Z, Liu H, Yuan Q, Xie Q, Yao S. Bi-Underpotential/PtAu-bulk co-electrodeposition and subsequent Bi dissolution for the electrocatalytic oxidation and amperometric analysis of formaldehyde. Analyst 2020; 145:7546-7550. [PMID: 32996909 DOI: 10.1039/d0an01608j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A PtAuBi-UPD composite electrocatalyst modified glassy carbon electrode (GCE) is prepared via the simultaneous underpotential deposition (UDP) of Bi and bulk deposition of Pt and Au, followed by stripping of the accessible Bi, and it shows high performance for the electrocatalytic oxidation and amperometric analysis of formaldehyde.
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Affiliation(s)
- Yingying Chen
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (MOE of China), National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Hunan Normal University, Changsha 410081, China.
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17
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The Mimic Enzyme Properties of Au@PtNRs and the Detection for Ascorbic Acid Based on Their Catalytic Properties. Catalysts 2020. [DOI: 10.3390/catal10111285] [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] Open
Abstract
Being superior to natural enzymes, nanoenzymes are drawing a great deal of attention in the field of biosensing. Herein, we developed an ultrasensitive, stable and selective colorimetric assay having dual functionalities of Au-tipped Pt nanorods (NRs). The optical and catalytic properties of Au-tipped Pt NRs were monitored using a spectrophotometer and the chromogenic substrate 3, 3′, 5, 5′-tetramethylbenzidine (TMB) in the presence of H2O2, respectively. We found that Au-tipped Pt NRs exhibited excellent peroxidase-like activity, which decomposed hydrogen peroxide (H2O2) into oxygen (O2). The produced O2 oxidized the chromogenic substrate into a blue color product. The oxidation rate of the chromogenic substrate could be monitored using a spectrophotometer at 652 nm. Notably, the peroxidase-like activity of Au-tipped Pt NRs decreased in the presence of ascorbic acid (AA). The produced O2 preferentially reacted with AA, generating ascorbyl radicals (AA·) instead of oxidizing TMB, and thereby decreased the oxidation rate of TMB. Based on this inhibitory property, a selective colorimetric assay was developed using Au-tipped Pt NRs for the detection of AA. This work offers a novel detection method for AA.
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18
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Ren X, Lu J, Wang M, Guo M, Li H, Pan X, Li L, Munyentwali A, Yang Q. Efficient Production of Nitrones via One-Pot Reductive Coupling Reactions Using Bimetallic RuPt NPs. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Xiaomin Ren
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianmin Lu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Maodi Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Miao Guo
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - He Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xiaoli Pan
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Lin Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Alexis Munyentwali
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Qihua Yang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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19
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Tao L, Huang B, Jin F, Yang Y, Luo M, Sun M, Liu Q, Gao F, Guo S. Atomic PdAu Interlayer Sandwiched into Pd/Pt Core/Shell Nanowires Achieves Superstable Oxygen Reduction Catalysis. ACS NANO 2020; 14:11570-11578. [PMID: 32816456 DOI: 10.1021/acsnano.0c04061] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Rationally designing the core/shell architecture of Pt-based electrocatalysts has been demonstrated as an effective way to induce a surface strain effect for promoting the sluggish kinetics of the oxygen reduction reaction (ORR) at the cathode of fuel cells. However, unstable core dissolution and structural collapse usually occur in Pt-based core/shell catalysts during the long-term cycling operation, greatly impacting actual fuel cell applications. Impeding the dissolution of cores beneath the Pt shells is the key to enhancing the catalytic stability of materials. Herein, a method for sandwiching atomic PdAu interlayers into one-dimensional (1D) Pd/Pt core/shell nanowires (NWs) is developed to greatly boost the catalytic stability of subnanometer Pt shells for ORR. The Pd/PdAu/Pt core/shell/shell NWs display only 7.80% degradation of ORR mass activity over 80 000 potential cycles with no dissolution of Pd cores and good preservation of the holistic sandwich core/shell nanostructures. This is a significant improvement of electrocatalytic stability compared with the Pd/Pt core/shell NWs, which deformed and inactivated over 80 000 potential cycles. The density functional theory (DFT) calculations further demonstrate that the electron-transfer bridge Pd and electron reservoir Au, serving in the PdAu atomic interlayer, both guarantee the preservation of the high electroactivity of surface Pt sites during the long-term ORR stability test. In addition, the Pd/PdAu/Pt NWs show a 1.7-fold higher mass activity (MA) for ORR than the conventional Pd/Pt NWs. The enhanced activity can be attributed to the strong interaction between PdAu interlayers and subnanometer-Pt shells, which suppresses the competitive Pd-4d bands and boosts the surface Pt-5d bands toward the Fermi level for higher electroactivity, proved from DFT.
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Affiliation(s)
- Lu Tao
- Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
- Department of Materials Science & Engineering, & BIC-ESAT, College of Engineering, Peking University, Beijing 100871, China
| | - Bolong Huang
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kow-loon, Hong Kong, SAR, China
| | - Fengdan Jin
- Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Yong Yang
- Department of Materials Science & Engineering, & BIC-ESAT, College of Engineering, Peking University, Beijing 100871, China
| | - Mingchuan Luo
- Department of Materials Science & Engineering, & BIC-ESAT, College of Engineering, Peking University, Beijing 100871, China
| | - Mingzi Sun
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kow-loon, Hong Kong, SAR, China
| | - Qian Liu
- Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Faming Gao
- Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Shaojun Guo
- Department of Materials Science & Engineering, & BIC-ESAT, College of Engineering, Peking University, Beijing 100871, China
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20
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Iglesias-Mayor A, Amor-Gutiérrez O, Novelli A, Fernández-Sánchez MT, Costa-García A, de la Escosura-Muñiz A. Bifunctional Au@Pt/Au core@shell Nanoparticles As Novel Electrocatalytic Tags in Immunosensing: Application for Alzheimer’s Disease Biomarker Detection. Anal Chem 2020; 92:7209-7217. [DOI: 10.1021/acs.analchem.0c00760] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Alba Iglesias-Mayor
- NanoBioAnalysis Group- Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería 8, 33006, Oviedo, Spain
| | - Olaya Amor-Gutiérrez
- NanoBioAnalysis Group- Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería 8, 33006, Oviedo, Spain
| | - Antonello Novelli
- Department of Psychology, University of Oviedo, Plaza Feijoo s/n, 33003, Oviedo, Spain
- University Institute of Biotechnology of Asturias (IUBA), University of Oviedo, Doctor Fernando Bongera s/n, 33006, Oviedo, Spain
- Health Research Institute of the Principality of Asturias (ISPA), Hospital Universitario s/n, 33011, Oviedo, Spain
| | - María-Teresa Fernández-Sánchez
- University Institute of Biotechnology of Asturias (IUBA), University of Oviedo, Doctor Fernando Bongera s/n, 33006, Oviedo, Spain
- Department of Biochemistry and Molecular Biology, University of Oviedo, Doctor Fernando Bongera s/n, 33006, Oviedo, Spain
| | - Agustín Costa-García
- NanoBioAnalysis Group- Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería 8, 33006, Oviedo, Spain
| | - Alfredo de la Escosura-Muñiz
- NanoBioAnalysis Group- Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería 8, 33006, Oviedo, Spain
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21
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Yin S, Ding Y. Bimetallic PtAu electrocatalysts for the oxygen reduction reaction: challenges and opportunities. Dalton Trans 2020; 49:4189-4199. [PMID: 32191785 DOI: 10.1039/d0dt00205d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly active, durable oxygen reduction reaction (ORR) electrocatalysts have an essential role in promoting the continuous operation of advanced energy technologies such as fuel cells and metal-air batteries. Considering the scarce reserve of Pt and its unsatisfactory overall performance, there is an urgent demand for the development of new generation ORR electrocatalysts that are substantially better than the state-of-the-art supported Pt-based nanocatalysts, such as Pt/C. Among various nanostructures, bimetallic PtAu represents one unique alloy system where highly contradictory performance has been reported. While it is generally accepted that Au may contribute to stabilizing Pt, its role in modulating the intrinsic activity of Pt remains unclear. This perspective will discuss critical structural issues that affect the intrinsic ORR activities of bimetallic PtAu, with an eye on elucidating the origin of seemingly inconsistent experimental results from the literature. As a relatively new class of electrodes, we will also highlight the performance of dealloyed nanoporous gold (NPG) based electrocatalysts, which allow a unique combination of structural properties highly desired for this important reaction. Finally, we will put forward the challenges and opportunities for the incorporation of these advanced electrocatalysts into membrane electrode assemblies (MEA) for actual fuel cells.
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Affiliation(s)
- Shuai Yin
- Tianjin Key Laboratory of Advanced Functional Porous Materials, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China.
| | - Yi Ding
- Tianjin Key Laboratory of Advanced Functional Porous Materials, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China.
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22
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Cai S, Fu Z, Xiao W, Xiong Y, Wang C, Yang R. Zero-Dimensional/Two-Dimensional Au xPd 100-x Nanocomposites with Enhanced Nanozyme Catalysis for Sensitive Glucose Detection. ACS APPLIED MATERIALS & INTERFACES 2020; 12:11616-11624. [PMID: 32068379 DOI: 10.1021/acsami.9b21621] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Here, we report facile fabrication of two-dimensional (2D) Pd nanosheet (NS)-supported zero-dimensional (0D) Au nanoparticles via galvanic replacement. In the synthesis, the surface-clean Pd NSs premade not only acted as a sacrifice template for replacing Pd atoms by Au3+ ions, but served as a support substrate to support Au nanoparticles. The morphology, structure, and composition of products relied on the Au/Pd feed atomic ratio. Interestingly, the as-obtained 0D/2D AuxPd100-x (x = 4.5, 9.8, and 21) nanocomposites showed remarkably enhanced peroxidase-mimic catalysis in the model oxidation reaction, which followed the typical Michaelis-Menten theory. Compared to Pd NSs, the enhanced catalysis of AuxPd100-x was closely related to both the increased specific surface area and the modified electronic structure of Pd NSs, which resulted in a change in the catalytic pathway, that is, from hydroxyl radical generation to rapid electron transfer. The work provides a simple yet efficient avenue to build highly efficient heterogeneous catalysts based on metallic NSs, as exemplified by the superior nanozyme activity of 0D/2D bimetallic nanostructures for glucose detection.
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Affiliation(s)
- Shuangfei Cai
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhao Fu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Xiao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Youlin Xiong
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chen Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Sino-Danish College, Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rong Yang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Sino-Danish College, Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Beijing 100049, China
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23
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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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24
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Tojo C, Buceta D, López-Quintela MA. On the minimum reactant concentration required to prepare Au/M core-shell nanoparticles by the one-pot microemulsion route. PHYSICAL SCIENCES REVIEWS 2019. [DOI: 10.1515/psr-2018-0045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe minimum reactant concentration required to synthesize Au/M (M = Ag, Pt, Pd, Ru …) core-shell nanoparticles by the one-pot microemulsion route was calculated by a simulation model under different synthesis conditions. This minimum concentration was proved to depend on the reduction potential of the slower metal M and on the rigidity of the surfactant film composing the microemulsion. Model results were tested by comparing with Au/M nanoparticles taken from literature. In all cases, experimental data obey model predictions. From this agreement, one can conclude that the smaller the standard potential of the slower reduction metal, the lower the minimum concentration needed to obtain core-shell nanoparticles. In addition, the higher the surfactant flexibility, the higher the minimum concentration to synthesize metal segregated nanoparticles. Model prediction allows to quantify which is the best value of concentration to prepare different pairs of core-shell Au/M nanoparticles in terms of nature of M metal in the couple and microemulsion composition. This outlook may become an advanced tool for fine-tuning Au/M nanostructures.Graphical Abstract:
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Affiliation(s)
- C. Tojo
- Faculty of Chemistry, Department of Physical Chemistry, University of Vigo, Vigo, Galicia E-36310, Spain
| | - D. Buceta
- Facultade de Quimica, Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, Santiago de Compostela,GaliciaE-15782, Spain
| | - M. A. López-Quintela
- Facultade de Quimica, Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, Santiago de Compostela,GaliciaE-15782, Spain
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25
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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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26
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Higareda A, Kumar-Krishnan S, García-Ruiz AF, Maya-Cornejo J, Lopez-Miranda JL, Bahena D, Rosas G, Pérez R, Esparza R. Synthesis of Au@Pt Core-Shell Nanoparticles as Efficient Electrocatalyst for Methanol Electro-Oxidation. NANOMATERIALS 2019; 9:nano9111644. [PMID: 31752428 PMCID: PMC6915688 DOI: 10.3390/nano9111644] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 10/28/2019] [Accepted: 11/01/2019] [Indexed: 02/07/2023]
Abstract
Bimetallic Au@Pt nanoparticles (NPs) with Pt monolayer shell are of much interest for applications in heterogeneous catalysts because of enhanced catalytic activity and very low Pt-utilization. However, precisely controlled synthesis with uniform Pt-monolayers and stability on the AuNPs seeds remain elusive. Herein, we report the controlled deposition of Pt-monolayer onto uniform AuNPs seeds to obtain Au@Pt core–shell NPs and their Pt-coverage dependent electrocatalytic activity for methanol electro-oxidation. The atomic ratio between Au/Pt was effectively tuned by varying the precursor solution ratio in the reaction solution. The morphology and atomic structure of the Au@Pt NPs were analyzed by high-resolution scanning transmission electron microcopy (HR-STEM) and X-ray diffraction (XRD) techniques. The results demonstrated that the Au@Pt core–shell NPs with Pt-shell thickness (atomic ratio 1:2) exhibit higher electrocatalytic activity for methanol electro-oxidation reaction, whereas higher and lower Pt ratios showed less overall catalytic performance. Such higher catalytic performance of Au@Pt NPs (1:2) can be attributed to the weakened CO binding on the Pt/monolayers surface. Our present synthesis strategy and optimization of the catalytic activity of Au@Pt core–shell NPs catalysts provide promising approach to rationally design highly active catalysts with less Pt-usage for high performance electrocatalysts for applications in fuel cells.
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Affiliation(s)
- América Higareda
- Posgrado en Ciencia e Ingeniería de Materiales, Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro 76230, Mexico;
| | - Siva Kumar-Krishnan
- Cátedras CONACYT_Instituto de Física, Benemérita Universidad Autónoma de Puebla, Apdo. Postal J-48, Puebla 72570, Mexico;
| | - Amado F. García-Ruiz
- UPIICSA-COFAA, Instituto Politécnico Nacional, Te 950, Col. Granjas-México, Iztacalco, Ciudad de México 08400, Mexico;
| | - José Maya-Cornejo
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro 76230, Mexico; (J.M.-C.); (J.L.L.-M.)
| | - José L. Lopez-Miranda
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro 76230, Mexico; (J.M.-C.); (J.L.L.-M.)
| | - Daniel Bahena
- Laboratorio Avanzado de Nanoscopía Electrónica (LANE), Centro de Investigación y de Estudios Avanzados del I.P.N., Av. Instituto Politécnico Nacional 2508 Col. San Pedro Zacatenco, Ciudad de México 07360, Mexico;
| | - Gerardo Rosas
- Instituto de Investigaciones Metalúrgicas, UMSNH, edificio U, Ciudad Universitaria, Morelia Michoacán 58060, Mexico;
| | - Ramiro Pérez
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México (UNAM), Av. Universidad s/n, Cuernavaca, Morelos 62210, Mexico;
| | - Rodrigo Esparza
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro 76230, Mexico; (J.M.-C.); (J.L.L.-M.)
- Correspondence: ; Tel.: +52-442-192-6128 (ext. 136)
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27
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Atomically ordered non-precious Co 3Ta intermetallic nanoparticles as high-performance catalysts for hydrazine electrooxidation. Nat Commun 2019; 10:4514. [PMID: 31586070 PMCID: PMC6778194 DOI: 10.1038/s41467-019-12509-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 09/06/2019] [Indexed: 12/05/2022] Open
Abstract
Nano-ordered intermetallic compounds have generated great interest in fuel cell applications. However, the synthesis of non-preciousearly transition metal intermetallic nanoparticles remains a formidable challenge owing to the extremely oxyphilic nature and very negative reduction potentials. Here, we have successfully synthesized non-precious Co3Ta intermetallic nanoparticles, with uniform size of 5 nm. Atomic structural characterizations and X-ray absorption fine structure measurements confirm the atomically ordered intermetallic structure. As electrocatalysts for the hydrazine oxidation reaction, Co3Ta nanoparticles exhibit an onset potential of −0.086 V (vs. reversible hydrogen electrode) and two times higher specific activity relative to commercial Pt/C (+0.06 V), demonstrating the top-level performance among reported electrocatalysts. The Co-Ta bridge sites are identified as the location of the most active sites thanks to density functional theory calculations. The activation energy of the hydrogen dissociation step decreases significantly upon N2H4 adsorption on the Co-Ta bridge active sites, contributing to the significantly enhanced activity. Intermetallic nanoparticles comprised of early transition metals are attractive for fuel cell applications, but are generally limited to noble metal-based systems. Here, authors report non-precious early transition metal intermetallic nanoparticles with promising electrocatalytic performance for the hydrazine oxidation reaction.
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28
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Li J, Jilani SZ, Lin H, Liu X, Wei K, Jia Y, Zhang P, Chi M, Tong YJ, Xi Z, Sun S. Ternary CoPtAu Nanoparticles as a General Catalyst for Highly Efficient Electro-oxidation of Liquid Fuels. Angew Chem Int Ed Engl 2019; 58:11527-11533. [PMID: 31206996 DOI: 10.1002/anie.201906137] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Indexed: 11/06/2022]
Abstract
Efficient electro-oxidation of formic acid, methanol, and ethanol is challenging owing to the multiple chemical reaction steps required to accomplish full oxidation to CO2 . Herein, a ternary CoPtAu nanoparticle catalyst system is reported in which Co and Pt form an intermetallic L10 -structure and Au segregates on the surface to alloy with Pt. The L10 -structure stabilizes Co and significantly enhances the catalysis of the PtAu surface towards electro-oxidation of ethanol, methanol, and formic acid, with mass activities of 1.55 A/mgPt , 1.49 A/mgPt , and 11.97 A/mgPt , respectively in 0.1 m HClO4 . The L10 -CoPtAu catalyst is also stable, with negligible degradation in mass activities and no obvious Co/Pt/Au composition changes after 10 000 potential cycles. The in situ surface-enhanced infrared absorption spectroscopy study indicates that the ternary catalyst activates the C-C bond more efficiently for ethanol oxidation.
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Affiliation(s)
- Junrui Li
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Safia Z Jilani
- Department of Chemistry, Georgetown University, 37th and O Streets, NW, Washington, DC, 20057, USA
| | - Honghong Lin
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Xiaoming Liu
- Center for Nanophase Materials Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Kecheng Wei
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Yukai Jia
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada
| | - Peng Zhang
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada
| | - Miaofang Chi
- Center for Nanophase Materials Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - YuYe J Tong
- Department of Chemistry, Georgetown University, 37th and O Streets, NW, Washington, DC, 20057, USA
| | - Zheng Xi
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Shouheng Sun
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
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29
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Li J, Jilani SZ, Lin H, Liu X, Wei K, Jia Y, Zhang P, Chi M, Tong YJ, Xi Z, Sun S. Ternary CoPtAu Nanoparticles as a General Catalyst for Highly Efficient Electro‐oxidation of Liquid Fuels. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906137] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Junrui Li
- Department of Chemistry Brown University Providence RI 02912 USA
| | - Safia Z. Jilani
- Department of Chemistry Georgetown University 37th and O Streets, NW Washington DC 20057 USA
| | - Honghong Lin
- Department of Chemistry Brown University Providence RI 02912 USA
| | - Xiaoming Liu
- Center for Nanophase Materials Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - Kecheng Wei
- Department of Chemistry Brown University Providence RI 02912 USA
| | - Yukai Jia
- Department of Chemistry Dalhousie University Halifax Nova Scotia B3H 4R2 Canada
| | - Peng Zhang
- Department of Chemistry Dalhousie University Halifax Nova Scotia B3H 4R2 Canada
| | - Miaofang Chi
- Center for Nanophase Materials Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - YuYe J. Tong
- Department of Chemistry Georgetown University 37th and O Streets, NW Washington DC 20057 USA
| | - Zheng Xi
- Department of Chemistry Brown University Providence RI 02912 USA
| | - Shouheng Sun
- Department of Chemistry Brown University Providence RI 02912 USA
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30
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Lee J, Yoo JK, Lee H, Kim SH, Sohn Y, Rhee CK. Formic acid oxidation on Pt deposit model catalysts on Au: Single-layered Pt deposits, plateau-type Pt deposits, and conical Pt deposits. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.04.107] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Ye X, He X, Lei Y, Tang J, Yu Y, Shi H, Wang K. One-pot synthesized Cu/Au/Pt trimetallic nanoparticles with enhanced catalytic and plasmonic properties as a universal platform for biosensing and cancer theranostics. Chem Commun (Camb) 2019; 55:2321-2324. [PMID: 30720028 DOI: 10.1039/c8cc10127b] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu/Au/Pt trimetallic nanoparticles (TMNPs) with enhanced catalytic activity and intense plasmonic absorption in the NIR-I biowindow (650-950 nm) were prepared using a fast, gentle and one-pot protocol. Based on these properties and assembly of thiolated-aptamers on Cu/Au/Pt TMNPs, a universal platform was developed for applications in biosensing and theranostics.
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Affiliation(s)
- Xiaosheng Ye
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha, Hunan 410082, China.
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32
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Lian W, Chen B, Xu B, Zhang S, Wan Z, Zhao D, Zhang N, Chen C. Acquiring Clean and Highly Dispersed Nickel Particles (ca. 2.8 nm) by Growing Nickel-Based Nanosheets on Al 2O 3 as Efficient and Stable Catalysts for Harvesting Cyclohexane Carboxylic Acid from the Hydrogenation of Benzoic Acid. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b06037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Weijie Lian
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Bo Chen
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Bingyu Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Song Zhang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Zhe Wan
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Dan Zhao
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Ning Zhang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Chao Chen
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
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33
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Yu NF, Tian N, Zhou ZY, Sheng T, Lin WF, Ye JY, Liu S, Ma HB, Sun SG. Pd Nanocrystals with Continuously Tunable High-Index Facets as a Model Nanocatalyst. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04741] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Neng-Fei Yu
- College of Energy Science and Engineering, Nanjing Tech University, Nanjing, 211800, China
- State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University, Xiamen, 361005, China
| | - Na Tian
- State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University, Xiamen, 361005, China
| | - Zhi-You Zhou
- State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University, Xiamen, 361005, China
| | - Tian Sheng
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, China
| | - Wen-Feng Lin
- Department of Chemical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU, U.K
| | - Jin-Yu Ye
- State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University, Xiamen, 361005, China
| | - Shuo Liu
- State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University, Xiamen, 361005, China
| | - Hai-Bin Ma
- State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University, Xiamen, 361005, China
| | - Shi-Gang Sun
- State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University, Xiamen, 361005, China
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34
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Gold Nanoparticles Stabilized by 1,2,3-Triazolyl Dendronized Polymers as Highly Efficient Nanoreactors for the Reduction of 4-Nitrophenol. Catal Letters 2019. [DOI: 10.1007/s10562-019-02662-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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35
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Zhang M, Miao S, Xu BQ. Core@shell nanostructured Au-d@NimPtm for electrochemical oxygen reduction reaction: effect of the core size and shell thickness. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01056d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Au-d@NimPtm nanostructures are studied to address the effects of the Au-core size (d) and NiPt-shell thickness (m) on the electrocatalytic performance of Pt for the ORR.
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Affiliation(s)
- Min Zhang
- Innovative Catalysis Program
- Key Lab of Organic Optoelectronics & Molecular Engineering
- Department of Chemistry
- Tsinghua University
- Beijing 100084
| | - Shu Miao
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Dalian 116023
- China
| | - Bo-Qing Xu
- Innovative Catalysis Program
- Key Lab of Organic Optoelectronics & Molecular Engineering
- Department of Chemistry
- Tsinghua University
- Beijing 100084
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36
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Tojo C, Buceta D, López-Quintela MA. Synthesis of Pt/M (M = Au, Rh) Nanoparticles in Microemulsions: Controlling the Metal Distribution in Pt/M Catalysts. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Concha Tojo
- Physical Chemistry Department, University of Vigo, E-36310 Vigo, Spain
| | - David Buceta
- Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - M. Arturo López-Quintela
- Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain
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37
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Lee J, Yoo JK, Kim J, Sohn Y, Rhee CK. Conical multiple-layered Pt deposits on Au and its adsorption stoichiometries of CO and hydrogen. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.09.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Zhao X, Takao S, Kaneko T, Iwasawa Y. Key Factors for Simultaneous Improvements of Performance and Durability of Core-Shell Pt 3 Ni/Carbon Electrocatalysts Toward Superior Polymer Electrolyte Fuel Cell. CHEM REC 2018; 19:1337-1353. [PMID: 30338915 DOI: 10.1002/tcr.201800110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/02/2018] [Indexed: 02/06/2023]
Abstract
It remains a big challenge to remarkably improve both oxygen reduction reaction (ORR) activity and long-term durability of Pt-M bimetal electrocatalysts simultaneously in the harsh cathode environment toward widespread commercialization of polymer electrolyte fuel cells (PEFC). In this account we found double-promotional effects of carbon micro coil (CMC) support on ORR performance and durability of octahedral Pt3 Ni nanoparticles (Oh Pt3 Ni/CMC). The Oh Pt3 Ni/CMC displayed remarkable improvements of mass activity (MA; 13.6 and 34.1 times) and surface specific activity (SA; 31.3 and 37.0 times) compared to those of benchmark Pt/C (TEC10E20E) and Pt/C (TEC10E50E-HT), respectively. Notably, the Oh Pt3 Ni/CMC revealed a negligible MA loss after 50,000 triangular-wave 1.0-1.5 VRHE (startup/shutdown) load cycles, contrasted to MA losses of 40 % (TEC10E20E) and 21.5 % (TEC10E50E-HT) by only 10,000 load cycles. It was also found that the SA increased exponentially with the decrease in the CO stripping peak potential in a series of Pt-M/carbon (M: Ni and Co), which predicts a maximum SA at the curve asymptote. Key factors for simultaneous improvements of performance and durability of core-shell Pt3 Ni/carbon electrocatalysts toward superior PEFC is also discussed.
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Affiliation(s)
- Xiao Zhao
- Innovation Research Center for Fuel Cells, The University of Electro-Communications Chofu, Tokyo, 182-8585, Japan
| | - Shinobu Takao
- Innovation Research Center for Fuel Cells, The University of Electro-Communications Chofu, Tokyo, 182-8585, Japan
| | - Takuma Kaneko
- Innovation Research Center for Fuel Cells, The University of Electro-Communications Chofu, Tokyo, 182-8585, Japan
| | - Yasuhiro Iwasawa
- Innovation Research Center for Fuel Cells, The University of Electro-Communications Chofu, Tokyo, 182-8585, Japan
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39
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Yang JW, Zheng WT, Hu Z, Zhang M, Xu BQ. Do Olefin Hydrogenation Reactions Remain Structure Insensitive over Pt in Nanostructured Pt-on-Au Catalyst? ACS Catal 2018. [DOI: 10.1021/acscatal.8b02471] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jia-Wei Yang
- Innovative Catalysis Program, Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Wen-Tao Zheng
- Innovative Catalysis Program, Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Zhun Hu
- School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Min Zhang
- Innovative Catalysis Program, Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Bo-Qing Xu
- Innovative Catalysis Program, Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
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40
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Noble-metal efficient Pt-Ir-Co/SiO2 catalyst for selective hydrogenolytic ring opening of methylcyclopentane. Catal Today 2018. [DOI: 10.1016/j.cattod.2018.03.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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41
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Wang Q, Li J, Wang X, Liu Y, Long Y, Li J, Pan J, Song S, Zhang H. Surfactant‐Guided Synthesis of Porous Pt Shells with Ordered Tangential Channels, Coated on Pd Nanostructures, and Their Enhanced Catalytic Activities. Chemistry 2018; 24:15649-15655. [DOI: 10.1002/chem.201803056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Qishun Wang
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 P. R. China
- University of Science and Technology of China Hefei 230026 P. R. China
| | - Junqi Li
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 P. R. China
| | - Xiao Wang
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 P. R. China
| | - Yu Liu
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Yan Long
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Jian Li
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 P. R. China
- University of Science and Technology of China Hefei 230026 P. R. China
| | - Jing Pan
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 P. R. China
| | - Shuyan Song
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 P. R. China
- University of Science and Technology of China Hefei 230026 P. R. China
- Key Laboratory of Preparation and Application of Environmental Friendly Materials, Jilin Normal University Ministry of Education Changchun 130103 P. R. China
| | - Hongjie Zhang
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 P. R. China
- University of Science and Technology of China Hefei 230026 P. R. China
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42
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Zhang GR, Wolker T, Sandbeck DJS, Munoz M, Mayrhofer KJJ, Cherevko S, Etzold BJM. Tuning the Electrocatalytic Performance of Ionic Liquid Modified Pt Catalysts for the Oxygen Reduction Reaction via Cationic Chain Engineering. ACS Catal 2018; 8:8244-8254. [PMID: 30221028 PMCID: PMC6135603 DOI: 10.1021/acscatal.8b02018] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/17/2018] [Indexed: 11/29/2022]
Abstract
Modifying Pt catalysts using hydrophobic ionic liquids (ILs) has been demonstrated to be a facile approach for boosting the performance of Pt catalysts for the oxygen reduction reaction (ORR). This work aims to deepen the understanding and initiate a rational molecular tuning of ILs for improved activity and stability. To this end, Pt/C catalysts were modified using a variety of 1-methyl-3-alkylimidazolium bis(trifluoromethanesulfonyl)imide ([C n C1im][NTf2], n = 2-10) ILs with varying alkyl chain lengths in imidazolium cations, and the electrocatalytic properties (e.g., electrochemically active surface area, catalytic activity, and stability) of the resultant catalysts were systematically investigated. We found that ILs with long cationic chains (C6, C10) efficiently suppressed the formation of nonreactive oxygenated species on Pt; however, at the same time they blocked active Pt sites and led to a lower electrochemically active surface area. It is also disclosed that the catalytic activity strongly correlates with the alkyl chain length of cations, and a distinct dependence of intrinsic activity on the alkyl chain length was identified, with the maximum activity obtained on Pt/C-[C4C1im][NTf2]. The optimum arises from the counterbalance between more efficient suppression of oxygenated species formation on Pt surfaces and more severe passivation of Pt surfaces with elongation of the alkyl chain length in imidazolium cations. Moreover, the presence of an IL can also improve the electrochemical stability of Pt catalysts by suppressing the Pt dissolution, as revealed by combined identical-location transmission electron microscopy (TEM) and in situ inductively coupled plasma mass spectrometry (ICP-MS) analyses.
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Affiliation(s)
- Gui-Rong Zhang
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt, 64287 Darmstadt, Germany
| | - Thomas Wolker
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt, 64287 Darmstadt, Germany
| | - Daniel J. S. Sandbeck
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich GmbH, 91058 Erlangen, Germany
| | - Macarena Munoz
- Chemical Engineering Section, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Karl J. J. Mayrhofer
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich GmbH, 91058 Erlangen, Germany
| | - Serhiy Cherevko
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich GmbH, 91058 Erlangen, Germany
| | - Bastian J. M. Etzold
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt, 64287 Darmstadt, Germany
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43
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Sun Y, Wang R, Liu X, Shan G, Chen Y, Tong T, Liu Y. Laser-induced formation of Au/Pt nanorods with peroxidase mimicking and SERS enhancement properties for application to the colorimetric determination of H 2O 2. Mikrochim Acta 2018; 185:445. [PMID: 30178206 DOI: 10.1007/s00604-018-2981-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 08/24/2018] [Indexed: 01/12/2023]
Abstract
Platinum nanoparticles (PtNPs) were uniformly grown on the surface of gold nanorods (AuNRs) by a laser irradiation procedure. Transmission electron microscopy confirmed that the PtNPs are uniformly grown on the surface of the AuNRs. The formation of PtNPs on the AuNRs leads to a red-shift of the absorption maximum from 734 nm to 766 nm. In addition, the efficiency of surface enhanced Raman scattering (SERS) is increased, but the photothermal conversion efficiency is decreased compared to pure AuNRs. The result indicates that electron transfer occurs between gold and platinum. The peroxidase mimicking effect of PtNPs, AuNRs and Au/Pt NRs by catalyzing the oxidation of colorless 3,3',5,5'-tetramethylbenzidine (TMB) to blue oxidized 3,3',5,5'-tetramethylbenzidine (oxTMB; a quinone) in the presence of H2O2. The catalytic activity of Au/Pt NRs is higher than that of sole AuNRs or PtNPs by factors of 4.2 and 2.1, respectively. Thus, Au/Pt NRs have been used for the detection of peroxide and the limit of detection is 0.04 μM. This work provides an approach to integrate the peroxidase mimicking effect with SERS enhancement for potential application in detection. Graphical abstract A schematic diagram for the laser-induced growth of Au/Pt NRs and the colorimetric determination of hydrogen peroxide concentration with their peroxidase mimicking properties. The limit of detection is 0.04 μM based on the use of Au/Pt NRs as a catalyst.
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Affiliation(s)
- Ying Sun
- Centre for Advanced Optoelectronic Functional Materials Research, Key Laboratory for UV Light-Emitting Materials and Technology of the Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Ruixue Wang
- Centre for Advanced Optoelectronic Functional Materials Research, Key Laboratory for UV Light-Emitting Materials and Technology of the Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Xuan Liu
- National Demonstration Center for Experimental Physics Education, Northeast Normal University, Changchun, 130024, China
| | - Guiye Shan
- Centre for Advanced Optoelectronic Functional Materials Research, Key Laboratory for UV Light-Emitting Materials and Technology of the Ministry of Education, Northeast Normal University, Changchun, 130024, China. .,National Demonstration Center for Experimental Physics Education, Northeast Normal University, Changchun, 130024, China.
| | - Yanwei Chen
- Centre for Advanced Optoelectronic Functional Materials Research, Key Laboratory for UV Light-Emitting Materials and Technology of the Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Ti Tong
- The second hospital of Jilin University, Changchun, China.
| | - Yichun Liu
- Centre for Advanced Optoelectronic Functional Materials Research, Key Laboratory for UV Light-Emitting Materials and Technology of the Ministry of Education, Northeast Normal University, Changchun, 130024, China
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44
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Zhao Y, Zhang W, Yin H, He J, Ding Y. Surface alloying of Pt monolayer on nanoporous gold for enhanced oxygen reduction. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.04.067] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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45
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Formic acid electrooxidation activity of Pt and Pt/Au catalysts: Effects of surface physical properties and irreversible adsorption of Bi. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.04.071] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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46
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Tojo C, Buceta D, López-Quintela MA. Bimetallic nanoparticles synthesized in microemulsions: A computer simulation study on relationship between kinetics and metal segregation. J Colloid Interface Sci 2018; 510:152-161. [DOI: 10.1016/j.jcis.2017.09.057] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 09/13/2017] [Accepted: 09/14/2017] [Indexed: 11/24/2022]
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47
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Kong F, Du C, Ye J, Chen G, Du L, Yin G. Selective Surface Engineering of Heterogeneous Nanostructures: In Situ Unraveling of the Catalytic Mechanism on Pt–Au Catalyst. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01901] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | | | - Jinyu Ye
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, Department
of Chemistry, Xiamen University, Xiamen 361005, China
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48
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Gong H, Zhang W, Li F, Yang R. Enhanced Electrocatalytic Performance of Self-supported AuCuCo for Oxygen Reduction and Evolution Reactions. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.08.194] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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49
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Zhao X, Takao S, Higashi K, Kaneko T, Samjeskè G, Sekizawa O, Sakata T, Yoshida Y, Uruga T, Iwasawa Y. Simultaneous Improvements in Performance and Durability of an Octahedral PtNix/C Electrocatalyst for Next-Generation Fuel Cells by Continuous, Compressive, and Concave Pt Skin Layers. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00964] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao Zhao
- Innovation Research
Center for Fuel Cells, The University of Electro-Communications, Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Shinobu Takao
- Innovation Research
Center for Fuel Cells, The University of Electro-Communications, Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Kotaro Higashi
- Innovation Research
Center for Fuel Cells, The University of Electro-Communications, Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Takuma Kaneko
- Innovation Research
Center for Fuel Cells, The University of Electro-Communications, Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Gabor Samjeskè
- Innovation Research
Center for Fuel Cells, The University of Electro-Communications, Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Oki Sekizawa
- Innovation Research
Center for Fuel Cells, The University of Electro-Communications, Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Tomohiro Sakata
- Innovation Research
Center for Fuel Cells, The University of Electro-Communications, Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Yusuke Yoshida
- Innovation Research
Center for Fuel Cells, The University of Electro-Communications, Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Tomoya Uruga
- Innovation Research
Center for Fuel Cells, The University of Electro-Communications, Chofugaoka, Chofu, Tokyo 182-8585, Japan
- Japan Synchrotron Radiation Research Institute, SPring-8, Sayo, Hyogo 679-5198, Japan
| | - Yasuhiro Iwasawa
- Innovation Research
Center for Fuel Cells, The University of Electro-Communications, Chofugaoka, Chofu, Tokyo 182-8585, Japan
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50
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Du C, Gao X, Zhuang Z, Cheng C, Zheng F, Li X, Chen W. Epitaxial growth of zigzag PtAu alloy surface on Au nano-pentagrams with enhanced Pt utilization and electrocatalytic performance toward ethanol oxidation reaction. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.03.198] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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