201
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Sun Y, Zhou Y, Zhu C, Hu L, Han M, Wang A, Huang H, Liu Y, Kang Z. A Pt-Co 3O 4-CD electrocatalyst with enhanced electrocatalytic performance and resistance to CO poisoning achieved by carbon dots and Co 3O 4 for direct methanol fuel cells. NANOSCALE 2017; 9:5467-5474. [PMID: 28426049 DOI: 10.1039/c7nr01727h] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Highly efficient electrocatalysts remain huge challenges in direct methanol fuel cells (DMFCs). Here, a Pt-Co3O4-CDs/C composite was fabricated as an anode electrocatalyst with low Pt content (12 wt%) by using carbon dots (CDs) and Co3O4 nanoparticles as building blocks. The Pt-Co3O4-CDs/C composite catalyst shows a significantly enhanced electrocatalytic activity (1393.3 mA mg-1 Pt), durability (over 4000 s) and CO-poisoning tolerance. The superior catalytic activity should be attributed to the synergistic effect of CDs, Pt and Co3O4. Furthermore, the Pt-Co3O4-CDs/C catalyst was integrated into a single cell, which exhibits a maximum power density of 45.6 mW cm-2, 1.7 times the cell based on the commercial 20 wt% Pt/C catalyst.
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Affiliation(s)
- Yue Sun
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, China.
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202
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Li K, Xiao M, Jin Z, Zhu J, Ge J, Liu C, Xing W. Advanced architecture carbon with in-situ embedded ultrafine titanium dioxide as outstanding support material for platinum catalysts towards methanol electrooxidation. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.03.136] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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203
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Datta S, Raychaudhuri AK, Saha-Dasgupta T. First principles study of bimetallic Ni 13-nAg n nano-clusters (n = 0-13): Structural, mixing, electronic, and magnetic properties. J Chem Phys 2017; 146:164301. [PMID: 28456196 DOI: 10.1063/1.4981801] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Using spin polarized density functional theory based calculations, combined with ab initio molecular dynamics simulation, we carry out a systematic investigation of the bimetallic Ni13-nAgn nano-clusters, for all compositions. This includes prediction of the geometry, mixing behavior, and electronic properties. Our study reveals a tendency towards the formation of a core-shell like structure, following the rule of putting Ni in a high coordination site and Ag in a low coordination site. Our calculations predict negative mixing energies for the entire composition range, indicating mixing to be favored for the bimetallic small sized Ni-Ag clusters, irrespective of the compositions. The magic composition with the highest stability is found for the NiAg12 alloy cluster. We investigate the microscopic origin of a core-shell like structure with negative mixing energy, in which the Ni-Ag inter-facial interaction is found to play a role. We also study the magnetic properties of the Ni-Ag alloy clusters. The Ni dominated magnetism consists of parallel alignment of Ni moments while the tiny moments on Ag align in anti-parallel to Ni moments. The hybridization with the Ag environment causes reduction of Ni moment.
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Affiliation(s)
- Soumendu Datta
- Thematic Unit of Excellence on Computational Materials Science, S.N. Bose National Centre for Basic Sciences, JD Block, Sector-III, Salt Lake City, Kolkata 700 106, India
| | - A K Raychaudhuri
- Thematic Unit of Excellence on Computational Materials Science, S.N. Bose National Centre for Basic Sciences, JD Block, Sector-III, Salt Lake City, Kolkata 700 106, India
| | - Tanusri Saha-Dasgupta
- Thematic Unit of Excellence on Computational Materials Science, S.N. Bose National Centre for Basic Sciences, JD Block, Sector-III, Salt Lake City, Kolkata 700 106, India
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204
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Electrodeposited Pd and PdNi coatings as electrodes for the electrochemical oxidation of ethanol in alkaline media. J Solid State Electrochem 2017. [DOI: 10.1007/s10008-017-3595-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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205
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Ma SY, Li HH, Hu BC, Cheng X, Fu QQ, Yu SH. Synthesis of Low Pt-Based Quaternary PtPdRuTe Nanotubes with Optimized Incorporation of Pd for Enhanced Electrocatalytic Activity. J Am Chem Soc 2017; 139:5890-5895. [DOI: 10.1021/jacs.7b01482] [Citation(s) in RCA: 171] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Si-Yue Ma
- Division of Nanomaterials
and Chemistry, Hefei National Laboratory for Physical Sciences at
the Microscale, Collaborative Innovation Center of Suzhou Nano Science
and Technology, Department of Chemistry, CAS Center for Excellence
in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Hui-Hui Li
- Division of Nanomaterials
and Chemistry, Hefei National Laboratory for Physical Sciences at
the Microscale, Collaborative Innovation Center of Suzhou Nano Science
and Technology, Department of Chemistry, CAS Center for Excellence
in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Bi-Cheng Hu
- Division of Nanomaterials
and Chemistry, Hefei National Laboratory for Physical Sciences at
the Microscale, Collaborative Innovation Center of Suzhou Nano Science
and Technology, Department of Chemistry, CAS Center for Excellence
in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Xiang Cheng
- Division of Nanomaterials
and Chemistry, Hefei National Laboratory for Physical Sciences at
the Microscale, Collaborative Innovation Center of Suzhou Nano Science
and Technology, Department of Chemistry, CAS Center for Excellence
in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Qi-Qi Fu
- Division of Nanomaterials
and Chemistry, Hefei National Laboratory for Physical Sciences at
the Microscale, Collaborative Innovation Center of Suzhou Nano Science
and Technology, Department of Chemistry, CAS Center for Excellence
in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Shu-Hong Yu
- Division of Nanomaterials
and Chemistry, Hefei National Laboratory for Physical Sciences at
the Microscale, Collaborative Innovation Center of Suzhou Nano Science
and Technology, Department of Chemistry, CAS Center for Excellence
in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
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206
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Yan Y, Du JS, Gilroy KD, Yang D, Xia Y, Zhang H. Intermetallic Nanocrystals: Syntheses and Catalytic Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605997. [PMID: 28234403 DOI: 10.1002/adma.201605997] [Citation(s) in RCA: 240] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 01/11/2017] [Indexed: 05/21/2023]
Abstract
At the forefront of nanochemistry, there exists a research endeavor centered around intermetallic nanocrystals, which are unique in terms of long-range atomic ordering, well-defined stoichiometry, and controlled crystal structure. In contrast to alloy nanocrystals with no elemental ordering, it is challenging to synthesize intermetallic nanocrystals with a tight control over their size and shape. Here, recent progress in the synthesis of intermetallic nanocrystals with controllable sizes and well-defined shapes is highlighted. A simple analysis and some insights key to the selection of experimental conditions for generating intermetallic nanocrystals are presented, followed by examples to highlight the viable use of intermetallic nanocrystals as electrocatalysts or catalysts for various reactions, with a focus on the enhanced performance relative to their alloy counterparts that lack elemental ordering. Within the conclusion, perspectives on future developments in the context of synthetic control, structure-property relationships, and applications are discussed.
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Affiliation(s)
- Yucong Yan
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Jingshan S Du
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Kyle D Gilroy
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA
| | - Deren Yang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA
- School of Chemistry and Biochemistry, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Hui Zhang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
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207
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Dou X, Liu W, Liu Q, Niu Z. Nickel Phosphide Nanorod Arrays Vertically Grown on Ni Foam as High-Efficiency Electrocatalyst for the Hydrogen Evolution Reaction. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600644] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiandong Dou
- School of Chemical and Environmental Engineering; Shanghai Institute of Technology; Shanghai 201418 China
| | - Weijun Liu
- School of Chemical and Environmental Engineering; Shanghai Institute of Technology; Shanghai 201418 China
| | - Qing Liu
- School of Chemical and Environmental Engineering; Shanghai Institute of Technology; Shanghai 201418 China
| | - Zhiqiang Niu
- School of Chemical and Environmental Engineering; Shanghai Institute of Technology; Shanghai 201418 China
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208
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Feng G, Kuang Y, Li P, Han N, Sun M, Zhang G, Sun X. Single Crystalline Ultrathin Nickel-Cobalt Alloy Nanosheets Array for Direct Hydrazine Fuel Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2017; 4:1600179. [PMID: 28331781 PMCID: PMC5357988 DOI: 10.1002/advs.201600179] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 06/18/2016] [Indexed: 06/01/2023]
Abstract
Ultrathin 2D metal alloy nanomaterials have great potential applications but their controlled syntheses are limited to few noble metal based systems. Herein Ni x Co1-x alloy nanosheets with ultrathin (sub-3 nm) single-crystalline 2D structure are synthesized through a topochemical reduction method. Moreover, the optimized composition Ni0.6Co0.4 alloy nanosheets array exhibits excellent performances for hydrazine oxidation reaction and direct hydrazine fuel cells.
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Affiliation(s)
- Guang Feng
- State Key Laboratory of Chemical Resource EngineeringCollege of ScienceBeijing University of Chemical TechnologyBeijing100029P. R. China
| | - Yun Kuang
- State Key Laboratory of Chemical Resource EngineeringCollege of ScienceBeijing University of Chemical TechnologyBeijing100029P. R. China
| | - Pengsong Li
- State Key Laboratory of Chemical Resource EngineeringCollege of ScienceBeijing University of Chemical TechnologyBeijing100029P. R. China
| | - Nana Han
- State Key Laboratory of Chemical Resource EngineeringCollege of ScienceBeijing University of Chemical TechnologyBeijing100029P. R. China
| | - Ming Sun
- State Key Laboratory of Chemical Resource EngineeringCollege of ScienceBeijing University of Chemical TechnologyBeijing100029P. R. China
| | - Guoxin Zhang
- State Key Laboratory of Chemical Resource EngineeringCollege of ScienceBeijing University of Chemical TechnologyBeijing100029P. R. China
| | - Xiaoming Sun
- State Key Laboratory of Chemical Resource EngineeringCollege of EnergyBeijing Advanced Innovation Centre for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing100029P. R. China
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209
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He Z, Wang D, Tang J, Song S, Chen J, Tao X. A quasi-hexagonal prism-shaped carbon nitride for photoreduction of carbon dioxide under visible light. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:8219-8229. [PMID: 28155068 DOI: 10.1007/s11356-017-8497-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 01/20/2017] [Indexed: 06/06/2023]
Abstract
A quasi-hexagonal prism-shaped carbon nitride (H-C3N4) was synthesized from urea-derived C3N4 (U-C3N4) using an alkaline hydrothermal process. U-C3N4 decomposition followed by hydrogen bond rearrangement of hydrolyzed products leads to the formation of a quasi-hexagonal prism-shaped structure. The H-C3N4 catalysts displayed superior activity in the photoreduction of CO2 with H2O compared to U-C3N4. The enhanced photocatalytic activities can be attributed to the promotion of incompletely coordinated nitrogen atom formation in the C3N4 molecules. Graphical abstract ᅟ.
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Affiliation(s)
- Zhiqiao He
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Danfen Wang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Juntao Tang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Shuang Song
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China.
| | - Jianmeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Xinyong Tao
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
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210
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He P, Yu XY, Lou XWD. Carbon-Incorporated Nickel-Cobalt Mixed Metal Phosphide Nanoboxes with Enhanced Electrocatalytic Activity for Oxygen Evolution. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612635] [Citation(s) in RCA: 169] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Peilei He
- School of Chemical and Biomedical Engineering; Nanyang Technological University; 62 Nanyang Drive Singapore 637459 Singapore
| | - Xin-Yao Yu
- School of Chemical and Biomedical Engineering; Nanyang Technological University; 62 Nanyang Drive Singapore 637459 Singapore
| | - Xiong Wen David Lou
- School of Chemical and Biomedical Engineering; Nanyang Technological University; 62 Nanyang Drive Singapore 637459 Singapore
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211
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He P, Yu XY, Lou XWD. Carbon-Incorporated Nickel-Cobalt Mixed Metal Phosphide Nanoboxes with Enhanced Electrocatalytic Activity for Oxygen Evolution. Angew Chem Int Ed Engl 2017; 56:3897-3900. [DOI: 10.1002/anie.201612635] [Citation(s) in RCA: 619] [Impact Index Per Article: 88.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Peilei He
- School of Chemical and Biomedical Engineering; Nanyang Technological University; 62 Nanyang Drive Singapore 637459 Singapore
| | - Xin-Yao Yu
- School of Chemical and Biomedical Engineering; Nanyang Technological University; 62 Nanyang Drive Singapore 637459 Singapore
| | - Xiong Wen David Lou
- School of Chemical and Biomedical Engineering; Nanyang Technological University; 62 Nanyang Drive Singapore 637459 Singapore
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212
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Jiang K, Zhao D, Guo S, Zhang X, Zhu X, Guo J, Lu G, Huang X. Efficient oxygen reduction catalysis by subnanometer Pt alloy nanowires. SCIENCE ADVANCES 2017; 3:e1601705. [PMID: 28275723 PMCID: PMC5325541 DOI: 10.1126/sciadv.1601705] [Citation(s) in RCA: 178] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 12/28/2016] [Indexed: 05/19/2023]
Abstract
The common knowledge is that Pt and Pt alloy nanoparticles (NPs) less than 2 nm are not desirable for oxygen reduction reaction (ORR). However, whether the same trend is expected in Pt-based nanowires (NWs) and nanoplates remains questionable because there is no scalable approach to make such Pt nanostructures. We report a general approach for preparing subnanometer Pt alloy NWs with a diameter of only 4 to 5 atomic layer thickness, ranging from monometallic Pt NWs to bimetallic PtNi and PtCo NWs and to trimetallic PtNiCo NWs. In a sharp contrast to Pt alloy NPs, the subnanometer Pt alloy NWs demonstrate exceptional mass and specific activities of 4.20 A/mg and 5.11 mA/cm2 at 0.9 V versus reversible hydrogen electrode (RHE), respectively, 32.3 and 26.9 times higher than those of the commercial Pt/C. Density functional theory simulations reveal that the enhanced ORR activities are attributed to the catalytically active sites on high-density (111) facets in the subnanometer Pt alloy NWs. They are also very stable under the ORR condition with negligible activity decay over the course of 30,000 cycles. Our work presents a new approach to maximize Pt catalytic efficiency with atomic level utilization for efficient heterogeneous catalysis and beyond.
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Affiliation(s)
- Kezhu Jiang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China
| | - Dandan Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China
| | - Shaojun Guo
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
- Beijing Innovation Center for Engineering Science and Advanced Technology, College of Engineering, Peking University, Beijing 100871, China
- Key Laboratory of Theory and Technology of Advanced Batteries Materials, College of Engineering, Peking University, Beijing 100871, China
- Corresponding author. (S.G.); (X.H.)
| | - Xu Zhang
- Department of Physics and Astronomy, California State University, Northridge, Northridge, CA 91330, USA
| | - Xing Zhu
- Testing and Analysis Center, Soochow University, Jiangsu 215123, China
| | - Jun Guo
- Testing and Analysis Center, Soochow University, Jiangsu 215123, China
| | - Gang Lu
- Department of Physics and Astronomy, California State University, Northridge, Northridge, CA 91330, USA
| | - Xiaoqing Huang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China
- Corresponding author. (S.G.); (X.H.)
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213
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Xiong Y, Shan H, Zhou Z, Yan Y, Chen W, Yang Y, Liu Y, Tian H, Wu J, Zhang H, Yang D. Tuning Surface Structure and Strain in Pd-Pt Core-Shell Nanocrystals for Enhanced Electrocatalytic Oxygen Reduction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1603423. [PMID: 27860266 DOI: 10.1002/smll.201603423] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Indexed: 06/06/2023]
Abstract
Icosahedral, octahedral, and cubic Pd@Pt core-shell nanocrystals with two atomic Pt layers are epitaxially generated under thermodynamic control. Such icosahedra exhibit remarkably enhanced catalytic properties for oxygen reduction reaction compared to the octahedra and cubes as well as commercial Pt/C, which can be attributed to ligand and geometry effects, especially twin-induced strain effect that is revealed by geometrical phase analysis.
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Affiliation(s)
- Yalin Xiong
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy, School of Materials Science & Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Hao Shan
- State Key Laboratory of Metal Matrix Composites, School of Materials Science & Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Zhengnan Zhou
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy, School of Materials Science & Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Yucong Yan
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy, School of Materials Science & Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Wenlong Chen
- State Key Laboratory of Metal Matrix Composites, School of Materials Science & Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yaxiong Yang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy, School of Materials Science & Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Yongfeng Liu
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy, School of Materials Science & Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - He Tian
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy, School of Materials Science & Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Jianbo Wu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science & Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Hui Zhang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy, School of Materials Science & Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Deren Yang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy, School of Materials Science & Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
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214
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Improved ethanol electrooxidation performance by shortening Pd-Ni active site distance in Pd-Ni-P nanocatalysts. Nat Commun 2017; 8:14136. [PMID: 28071650 PMCID: PMC5234093 DOI: 10.1038/ncomms14136] [Citation(s) in RCA: 195] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 11/30/2016] [Indexed: 12/23/2022] Open
Abstract
Incorporating oxophilic metals into noble metal-based catalysts represents an emerging strategy to improve the catalytic performance of electrocatalysts in fuel cells. However, effects of the distance between the noble metal and oxophilic metal active sites on the catalytic performance have rarely been investigated. Herein, we report on ultrasmall (∼5 nm) Pd–Ni–P ternary nanoparticles for ethanol electrooxidation. The activity is improved up to 4.95 A per mgPd, which is 6.88 times higher than commercial Pd/C (0.72 A per mgPd), by shortening the distance between Pd and Ni active sites, achieved through shape transformation from Pd/Ni–P heterodimers into Pd–Ni–P nanoparticles and tuning the Ni/Pd atomic ratio to 1:1. Density functional theory calculations reveal that the improved activity and stability stems from the promoted production of free OH radicals (on Ni active sites) which facilitate the oxidative removal of carbonaceous poison and combination with CH3CO radicals on adjacent Pd active sites. Incorporating oxophilic metals into noble metal catalysts can improve electrocatalytic performance; however, the influence of the distance between noble metal and oxophilic metal active site is not well understood. Here the authors make Pd–Ni–P nanocatalysts for ethanol oxidation, with improved performance achieved by shortening the Pd–Ni distance.
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215
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Huang L, Han Y, Zhang X, Fang Y, Dong S. One-step synthesis of ultrathin Pt xPb nerve-like nanowires as robust catalysts for enhanced methanol electrooxidation. NANOSCALE 2017; 9:201-207. [PMID: 27906402 DOI: 10.1039/c6nr07036a] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ultrathin PtxPb nerve-like nanowires (NNWs) with a diameter of only around 3.6 nm were synthesized by a one-step wet-chemical strategy, and they served as robust catalysts for greatly enhancing methanol electrooxidation both under acidic and alkaline conditions. Due to the high CO-poisoning tolerance, superior electrocatalytic activity and stability endowed by the Pt-Pb alloyed composition and the unique structure, the Pt3.5Pb NNWs showed the highest specific activity of 2.78 mA cm-2 in acidic media and 6.51 mA cm-2 in alkaline media toward the methanol oxidation reaction (MOR), which are 5.24 and 4.12 times higher than those of the commercial Pt/C catalysts, respectively. Meanwhile, the demonstrated synthetic strategy for Pt-Pb nanocrystals may stimulate more inspiration and strategies of the novel metal-based nanocrystals for promising applications in electrocatalysis.
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Affiliation(s)
- Liang Huang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun, Jilin 130022, PR China.
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216
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Oppermann A, Wehrhahn C, Flörke U, Herres-Pawlis S, Henkel G. Direct Electrochemical Synthesis of an Unusual Complex Salt: Almost Structural Identity - Different Charge. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201600408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Alexander Oppermann
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Christoph Wehrhahn
- Department of Chemistry; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Ulrich Flörke
- Department of Chemistry; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Sonja Herres-Pawlis
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Gerald Henkel
- Department of Chemistry; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
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217
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Hu F, Yang H, Wang C, Zhang Y, Lu H, Wang Q. Co-N-Doped Mesoporous Carbon Hollow Spheres as Highly Efficient Electrocatalysts for Oxygen Reduction Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13. [PMID: 27753222 DOI: 10.1002/smll.201602507] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 09/26/2016] [Indexed: 05/11/2023]
Abstract
Rational design of cost-effective, nonprecious metal-based catalysts with desirable oxygen reduction reaction (ORR) performance is extremely important for future fuel cell commercialization, etc. Herein, a new type of ORR catalyst of Co-N-doped mesoporous carbon hollow sphere (Co-N-mC) was developed by pyrolysis from elaborately fabricated polystyrene@polydopamine-Co precursors. The obtained catalysts with active Co sites distributed in highly graphitized mesoporous N-doped carbon hollow spheres exhibited outstanding ORR activity with an onset potential of 0.940 V, a half-wave potential of 0.851 V, and a small Tafel slope of 45 mV decade-1 in 0.1 m KOH solution, which was comparable to that of the Pt/C catalyst (20%, Alfa). More importantly, they showed superior durability with little current decline (less than 4%) in the chronoamperometric evaluation over 60 000 s. These features make the Co-N-mC one of the best nonprecious-metal catalysts to date for ORR in alkaline condition.
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Affiliation(s)
- Feng Hu
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Hongchao Yang
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Changhong Wang
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Yejun Zhang
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Huan Lu
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Qiangbin Wang
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
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218
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Wang C, Li J, Lou Y, Kan C, Zhu Y, Feng X, Ni Y, Xu H, Shi D, Wei X. Facile synthesis and heteroepitaxial growth mechanism of Au@Cu core–shell bimetallic nanocubes probed by first-principles studies. CrystEngComm 2017. [DOI: 10.1039/c7ce01617d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work provided a facile strategy for the synthesis of Au@Cu core–shell nanostructures. The proposed growth mechanism was probed by a first-principles investigation.
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Affiliation(s)
- Changshun Wang
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- P. R. China
| | - Junlong Li
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- P. R. China
| | - Yeke Lou
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- P. R. China
| | - Caixia Kan
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- P. R. China
| | - Yan Zhu
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- P. R. China
| | - Xiaoqin Feng
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- P. R. China
| | - Yuan Ni
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- P. R. China
| | - Haiying Xu
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- P. R. China
- Department of Mathematics and Physics
| | - Daning Shi
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- P. R. China
| | - Xinyuan Wei
- State Key Laboratory of Surface Physics and
- Key Laboratory for Computational Physical Sciences (MOE) &
- Department of Physics
- Fudan University
- Shanghai 200433
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219
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Li A, Chen Y, Duan W, Wang C, Zhuo K. Shape-controlled electrochemical synthesis of Au nanocrystals in reline: control conditions and electrocatalytic oxidation of ethylene glycol. RSC Adv 2017. [DOI: 10.1039/c7ra01639e] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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220
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Yao K, Zhao C, Sun N, Lu W, Zhang Y, Wang H, Wang J. Freestanding CuS nanowalls: ionic liquid-assisted synthesis and prominent catalytic performance for the decomposition of ammonium perchlorate. CrystEngComm 2017. [DOI: 10.1039/c7ce01119a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Freestanding CuS nanowalls, with excellent catalytic activity for AP thermal decomposition, were grown and assembled at the [C10mim]Br-modulated liquid–liquid interface.
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Affiliation(s)
- Kaisheng Yao
- School of Chemical Engineering and Pharmaceutics
- Henan University of Science and Technology
- Luoyang
- P. R. China
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
| | - Chenchen Zhao
- School of Chemical Engineering and Pharmaceutics
- Henan University of Science and Technology
- Luoyang
- P. R. China
| | - Nannan Sun
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Henan Normal University
| | - Weiwei Lu
- School of Chemical Engineering and Pharmaceutics
- Henan University of Science and Technology
- Luoyang
- P. R. China
| | - Yuan Zhang
- School of Chemical Engineering and Pharmaceutics
- Henan University of Science and Technology
- Luoyang
- P. R. China
| | - Huiyong Wang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Henan Normal University
| | - Jianji Wang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Henan Normal University
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221
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Li J, Fu X, Mao Z, Yang Y, Qiu T, Wu Q. Synthesis of PtM (M=Co, Ni)/Reduced Graphene Oxide Nanocomposites as Electrocatalysts for the Oxygen Reduction Reaction. NANOSCALE RESEARCH LETTERS 2016; 11:3. [PMID: 26732276 PMCID: PMC4701711 DOI: 10.1186/s11671-015-1208-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 12/21/2015] [Indexed: 06/05/2023]
Abstract
A series of PtM (M=Co, Ni)/reduced graphene oxide (rG-O) nanocomposites were successfully synthesized through a facile hydrothermal method. The as-synthesized nanocomposites were characterized using transmission electron microscopy and high-resolution transmission electron microscopy, X-ray diffraction, inductively coupled plasma-atomic emission spectrometer, and X-ray photoelectron spectroscopy. The electrochemical performance and oxygen reduction reaction (ORR) activity of PtM/rG-O nanocomposites were evaluated using cyclic voltammetry and the rotating disk electrode method. The results show that the addition of the reductant (1,2-hexadecanediol, HAD) in the reaction system slightly improved the ORR activity of PtM/rG-O nanocomposites with a negligible influence on the size and morphology of alloy NPs. Furthermore, PtNi/rG-O nanocomposites displayed the higher electrochemical stability than PtCo/rG-O nanocomposites. These results provide a facile strategy for the synthesis of Pt-based alloy NPs/rG-O nanocomposites for applications in catalysis and energy-related processes.
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Affiliation(s)
- Jialiang Li
- School of Chemical Engineering, Shandong University of Technology, Zibo, 255049, China.
| | - Xinning Fu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, and Biomedical Material and Engineering Center, Wuhan University of Technology, Wuhan, 430070, China.
| | - Zhou Mao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, and Biomedical Material and Engineering Center, Wuhan University of Technology, Wuhan, 430070, China.
| | - Yushi Yang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, and Biomedical Material and Engineering Center, Wuhan University of Technology, Wuhan, 430070, China.
| | - Tong Qiu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, and Biomedical Material and Engineering Center, Wuhan University of Technology, Wuhan, 430070, China.
| | - Qingzhi Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, and Biomedical Material and Engineering Center, Wuhan University of Technology, Wuhan, 430070, China.
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222
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Han SH, Bai J, Liu HM, Zeng JH, Jiang JX, Chen Y, Lee JM. One-Pot Fabrication of Hollow and Porous Pd-Cu Alloy Nanospheres and Their Remarkably Improved Catalytic Performance for Hexavalent Chromium Reduction. ACS APPLIED MATERIALS & INTERFACES 2016; 8:30948-30955. [PMID: 27778503 DOI: 10.1021/acsami.6b10343] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Noble metal nanostructures (NMNSs) play a crucial role in many heterogeneous catalytic reactions. Hollow and porous NMNSs possess generally prominent advantages over their solid counterparts due to their unordinary structural features. In this work, we describe a facial one-pot synthesis of hollow and porous Pd-Cu alloy nanospheres (Pd-Cu HPANSs) through a polyethylenimine (PEI)-assisted oxidation-dissolution mechanism. The strong coordination interaction between CuII and PEI facilitates the oxidation-dissolution of the Cu2O nanospheres template under air conditions, which is responsible for the generation of the Pd-Cu alloy and the convenient removal of the Cu2O nanospheres template at room temperature. Compared to the commercial Pd black, the Pd-Cu HPANSs show remarkably improved catalytic activity for the reduction of K2Cr2O7 by HCOOH at room temperature, attributing to the enhanced catalytic activity of the Pd-Cu HPANSs for the dehydrogenation decomposition of HCOOH.
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Affiliation(s)
- Shu-He Han
- Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, Shaaxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710062, China
| | - Juan Bai
- Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, Shaaxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710062, China
| | - Hui-Min Liu
- Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, Shaaxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710062, China
| | - Jing-Hui Zeng
- Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, Shaaxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710062, China
| | - Jia-Xing Jiang
- Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, Shaaxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710062, China
| | - Yu Chen
- Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, Shaaxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710062, China
| | - Jong-Min Lee
- School of Chemical and Biomedical Engineering, Nanyang Technological University , Singapore 637459, Singapore
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223
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Jiang X, Yan X, Ren W, Jia Y, Chen J, Sun D, Xu L, Tang Y. Porous AgPt@Pt Nanooctahedra as an Efficient Catalyst toward Formic Acid Oxidation with Predominant Dehydrogenation Pathway. ACS APPLIED MATERIALS & INTERFACES 2016; 8:31076-31082. [PMID: 27786447 DOI: 10.1021/acsami.6b11895] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
For direct formic acid fuel cells (DFAFCs), the dehydrogenation pathway is a desired reaction pathway, to boost the overall cell efficiency. Elaborate composition tuning and nanostructure engineering provide two promising strategies to design efficient electrocatalysts for DFAFCs. Herein, we present a facile synthesis of porous AgPt bimetallic nanooctahedra with enriched Pt surface (denoted as AgPt@Pt nanooctahedra) by a selective etching strategy. The smart integration of geometric and electronic effect confers a substantial enhancement of desired dehydrogenation pathway as well as electro-oxidation activity for the formic acid oxidation reaction (FAOR). We anticipate that the obtained nanocatalyst may hold great promises in fuel cell devices, and furthermore, the facile synthetic strategy demonstrated here can be extendable for the fabrication of other multicomponent nanoalloys with desirable morphologies and enhanced electrocatalytic performances.
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Affiliation(s)
- Xian Jiang
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, P. R. China
| | - Xiaoxiao Yan
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, P. R. China
| | - Wangyu Ren
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, P. R. China
| | - Yufeng Jia
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, P. R. China
| | - Jianian Chen
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, P. R. China
| | - Dongmei Sun
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, P. R. China
| | - Lin Xu
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, P. R. China
| | - Yawen Tang
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, P. R. China
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224
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Liu H, Tang H, Fang M, Si W, Zhang Q, Huang Z, Gu L, Pan W, Yao J, Nan C, Wu H. 2D Metals by Repeated Size Reduction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:8170-8176. [PMID: 27417413 DOI: 10.1002/adma.201601180] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 04/26/2016] [Indexed: 06/06/2023]
Abstract
A general and convenient strategy for manufacturing freestanding metal nanolayers is developed on large scale. By the simple process of repeatedly folding and calendering stacked metal sheets followed by chemical etching, free-standing 2D metal (e.g., Ag, Au, Fe, Cu, and Ni) nanosheets are obtained with thicknesses as small as 1 nm and with sizes of the order of several micrometers.
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Affiliation(s)
- Hanwen Liu
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Hao Tang
- School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, China
| | - Minghao Fang
- School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, China
| | - Wenjie Si
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Qinghua Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Zhaohui Huang
- School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, China
| | - Lin Gu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Wei Pan
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Jie Yao
- Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA
| | - Cewen Nan
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Hui Wu
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.
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225
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Shinde S, Sami A, Lee JH. Lanthanides-based graphene catalysts for high performance hydrogen evolution and oxygen reduction. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.08.050] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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226
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Kim HY, Cho S, Sa YJ, Hwang SM, Park GG, Shin TJ, Jeong HY, Yim SD, Joo SH. Self-Supported Mesostructured Pt-Based Bimetallic Nanospheres Containing an Intermetallic Phase as Ultrastable Oxygen Reduction Electrocatalysts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:5347-5353. [PMID: 27515995 DOI: 10.1002/smll.201601825] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 06/29/2016] [Indexed: 06/06/2023]
Abstract
Developing highly active and stable cathode catalysts is of pivotal importance for proton exchange membrane fuel cells (PEMFCs). While carbon-supported nanostructured Pt-based catalysts have so far been the most active cathode catalysts, their durability and single-cell performance are yet to be improved. Herein, self-supported mesostructured Pt-based bimetallic (Meso-PtM; M = Ni, Fe, Co, Cu) nanospheres containing an intermetallic phase are reported, which can combine the beneficial effects of transition metals (M), an intermetallic phase, a 3D interconnected framework, and a mesoporous structure. Meso-PtM nanospheres show enhanced oxygen reduction reaction (ORR) activity, compared to Pt black and Pt/C catalysts. Notably, Meso-PtNi containing an intermetallic phase exhibits ultrahigh stability, showing enhanced ORR activity even after 50 000 potential cycles, whereas Pt black and Pt/C undergo dramatic degradation. Importantly, Meso-PtNi with an intermetallic phase also demonstrated superior activity and durability when used in a PEMFC single-cell, with record-high initial mass and specific activities.
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Affiliation(s)
- Ho Young Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Seonghun Cho
- Fuel Cell Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Daejeon, 34129, Republic of Korea
- University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, Republic of Korea
| | - Young Jin Sa
- Department of Chemistry, UNIST, 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Sun-Mi Hwang
- Fuel Cell Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Daejeon, 34129, Republic of Korea
| | - Gu-Gon Park
- Fuel Cell Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Daejeon, 34129, Republic of Korea
- University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, Republic of Korea
| | - Tae Joo Shin
- UNIST Central Research Facility (UCRF), UNIST, 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Hu Young Jeong
- UNIST Central Research Facility (UCRF), UNIST, 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Sung-Dae Yim
- Fuel Cell Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Daejeon, 34129, Republic of Korea.
- University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, Republic of Korea.
| | - Sang Hoon Joo
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea.
- Department of Chemistry, UNIST, 50 UNIST-gil, Ulsan, 44919, Republic of Korea.
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227
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Wang X, Ruditskiy A, Xia Y. Rational design and synthesis of noble-metal nanoframes for catalytic and photonic applications. Natl Sci Rev 2016. [DOI: 10.1093/nsr/nww062] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Abstract
Nanoframes are unique for their 3D, highly open architecture. When made of noble metals, they are attractive for use as heterogeneous catalysts because of their large specific surface areas, high densities of catalytically active sites and low vulnerability toward sintering. They promise to enhance the catalytic activity and durability while reducing the material loading and cost. For nanoframes composed of Au and/or Ag, they also exhibit highly tunable plasmonic properties similar to those of nanorods. This article presents a brief account of recent progress in the design, synthesis and utilization of noble-metal nanoframes. We start with a discussion of the synthetic strategies, including those involving site-selected deposition and etching, as well as dealloying of both hollow and solid nanocrystals. We then highlight some of the applications enabled by noble-metal nanoframes. Finally, we discuss the challenges and trends with regard to future development.
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Affiliation(s)
- Xue Wang
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Aleksey Ruditskiy
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
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228
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Xiao W, Zhu J, Han L, Liu S, Wang J, Wu Z, Lei W, Xuan C, Xin HL, Wang D. Pt skin on Pd-Co-Zn/C ternary nanoparticles with enhanced Pt efficiency toward ORR. NANOSCALE 2016; 8:14793-14802. [PMID: 27445114 DOI: 10.1039/c6nr03944h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Exploring highly active, stable and relatively low-cost nanomaterials for the oxygen reduction reaction (ORR) is of vital importance for the commercialization of proton exchange membrane fuel cells (PEMFCs). Herein, a highly active, durable, carbon supported, and monolayer Pt coated Pd-Co-Zn nanoparticle is synthesized via a simple impregnation-reduction method, followed by spontaneous displacement of Pt. By tuning the atomic ratios, we obtain the composition-activity volcano curve for the Pd-Co-Zn nanoparticles and determined that Pd : Co : Zn = 8 : 1 : 1 is the optimal composition. Compared with pure Pd/C, the Pd8CoZn/C nanoparticles show a substantial enhancement in both the catalytic activity and the durability toward the ORR. Moreover, the durability and activity are further enhanced by forming a Pt skin on Pd8CoZn/C nanocatalysts. Interestingly, after 10 000 potential cycles in N2-saturated 0.1 M HClO4 solution, Pd8CoZn@Pt/C shows improved mass activity (2.62 A mg(-1)Pt) and specific activity (4.76 A m(-2)total), which are about 1.4 and 4.4 times higher than the initial values, and 37.4 and 5.5 times higher than those of Pt/C catalysts, respectively. After accelerated stability testing in O2-saturated 0.1 M HClO4 solution for 30 000 potential cycles, the half-wave potential negatively shifts about 6 mV. The results show that the Pt skin plays an important role in enhancing the activity as well as preventing degradation.
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Affiliation(s)
- Weiping Xiao
- Key laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P.R. China.
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229
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Fang C, Zhao J, Zhao G, Kuai L, Geng B. Simultaneous tunable structure and composition of PtAg alloyed nanocrystals as superior catalysts. NANOSCALE 2016; 8:14971-14978. [PMID: 27465607 DOI: 10.1039/c6nr02643e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
PtAg alloyed nanostructural catalysts were firstly prepared by co-reduction of AgNO3 and H2PtCl6 precursors in growth solution using a seed-mediated method. By simply changing the molar ratio of the metal precursors, the morphologies of the porous alloyed nanocrystals can be tuned from multipetals to multioctahedra. Simultaneously, the alloy composition can be varied from Pt76Ag24 to Pt66Ag34. The catalytic properties of the prepared PtAg alloyed nanocrystals with a tunable structure and composition were tentatively examined by choosing the reduction of 4-nitrophenol with NaBH4. The reaction rate normalized to the concentration of catalysts was calculated to be 318.9 s(-1) mol(-1) L and 277.4 s(-1) mol(-1) L for Pt70Ag30 and Pt66Ag34 porous catalysts, which is much higher than the pure Pt catalysts. Moreover, PtAg nanostructures can also serve as efficient electrocatalysts toward the methanol oxidation reaction, especially for Pt70Ag30 and Pt66Ag34 porous nanocrystals. The electrocatalytic activity and the durability were both highly enhanced compared to the commercial Pt/C catalyst. In addition, we also investigated the enhancement mechanism.
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Affiliation(s)
- Caihong Fang
- College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Anhui Normal University, Wuhu, Anhui Province 241000, China.
| | - Jun Zhao
- College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Anhui Normal University, Wuhu, Anhui Province 241000, China.
| | - Guili Zhao
- College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Anhui Normal University, Wuhu, Anhui Province 241000, China.
| | - Long Kuai
- College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Anhui Normal University, Wuhu, Anhui Province 241000, China.
| | - Baoyou Geng
- College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Anhui Normal University, Wuhu, Anhui Province 241000, China.
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230
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Liu R, Guo J, Ma G, Jiang P, Zhang D, Li D, Chen L, Guo Y, Ge G. Alloyed Crystalline Au-Ag Hollow Nanostructures with High Chemical Stability and Catalytic Performance. ACS APPLIED MATERIALS & INTERFACES 2016; 8:16833-44. [PMID: 27268019 DOI: 10.1021/acsami.6b03728] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
For bimetallic nanoparticles (NPs), the degree of alloying is beginning to be recognized as a significant factor affecting the NP properties. Here, we report an alloyed crystalline Au-Ag hollow nanostructure that exhibits a high catalytic performance, as well as structural and chemical stability. The Au-Ag alloyed hollow and porous nanoshell structures (HPNSs) with different morphologies and subnanoscale crystalline structures were synthesized by adjusting the size of the sacrificial Ag NPs via a galvanic replacement reaction. The catalytic activities of the nanomaterials were evaluated by the model reaction of the catalytic reduction of p-nitrophenol by NaBH4 to p-aminophenol. The experimental results show that the subnanoscale crystalline structure of the Au-Ag bimetallic HPNSs has much greater significance than the apparent morphology does in determining the catalytic ability of the nanostructures. The Au-Ag alloyed HPNSs with better surface crystalline alloying microstructures and open morphologies were found to exhibit much higher catalytic reaction rates and better cyclic usage efficiencies, probably because of the better dispersion of active Au atoms within these materials. These galvanic replacement-synthesized alloyed Au-Ag HPNSs, fabricated by a facile method that avoids Ag degradation, have potential applications in catalysis, nanomedicine (especially in drug/gene delivery and cancer theranostics), and biosensing.
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Affiliation(s)
- Renxiao Liu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Jianhua Guo
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Environmental Science, Hebei University , Baoding 071002, China
| | - Gang Ma
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Environmental Science, Hebei University , Baoding 071002, China
| | - Peng Jiang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Donghui Zhang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Dexing Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Lan Chen
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Yuting Guo
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Guanglu Ge
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
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231
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Collins G, Holmes JD. Engineering Metallic Nanoparticles for Enhancing and Probing Catalytic Reactions. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:5689-5695. [PMID: 26823380 DOI: 10.1002/adma.201503970] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 09/26/2015] [Indexed: 06/05/2023]
Abstract
Recent developments in tailoring the structural and chemical properties of colloidal metal nanoparticles (NPs) have led to significant enhancements in catalyst performance. Controllable colloidal synthesis has also allowed tailor-made NPs to serve as mechanistic probes for catalytic processes. The innovative use of colloidal NPs to gain fundamental insights into catalytic function will be highlighted across a variety of catalytic and electrocatalytic applications. The engineering of future heterogenous catalysts is also moving beyond size, shape and composition considerations. Advancements in understanding structure-property relationships have enabled incorporation of complex features such as tuning surface strain to influence the behavior of catalytic NPs. Exploiting plasmonic properties and altering colloidal surface chemistry through functionalization are also emerging as important areas for rational design of catalytic NPs. This news article will highlight the key developments and challenges to the future design of catalytic NPs.
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Affiliation(s)
- Gillian Collins
- Chemistry Department, and Tyndall National Institute, University College Cork, Cork, Ireland
- CRANN@AMBER, Trinity College Dublin, Dublin 2, Ireland
| | - Justin D Holmes
- Chemistry Department, and Tyndall National Institute, University College Cork, Cork, Ireland
- CRANN@AMBER, Trinity College Dublin, Dublin 2, Ireland
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232
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Jin X, Zhao M, Yan W, Zeng C, Bobba P, Thapa PS, Subramaniam B, Chaudhari RV. Anisotropic growth of PtFe nanoclusters induced by lattice-mismatch: Efficient catalysts for oxidation of biopolyols to carboxylic acid derivatives. J Catal 2016. [DOI: 10.1016/j.jcat.2016.02.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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233
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Park J, Kim J, Yang Y, Yoon D, Baik H, Haam S, Yang H, Lee K. RhCu 3D Nanoframe as a Highly Active Electrocatalyst for Oxygen Evolution Reaction under Alkaline Condition. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2016; 3:1500252. [PMID: 27774397 PMCID: PMC5054855 DOI: 10.1002/advs.201500252] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 08/25/2015] [Indexed: 05/24/2023]
Abstract
One pot synthesis of RhCu alloy truncated octahedral nanoframes, Cu@Rh core-shell nanoparticles, and a bundle of five RhCu nanowires is demonstrated. The RhCu alloy 3D nanoframe, in particular, exhibits excellent catalytic activity toward the oxygen evolution reaction under alkaline conditions.
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Affiliation(s)
- Jongsik Park
- Center for Molecular Spectroscopy and Dynamics Institute for Basic Science (IBS) Department of Chemistry Korea University Seoul 136-701 South Korea
| | - Jongchan Kim
- Department of Chemistry and Chemistry, Institute of Functional Materials Pusan University Busan 609-735 South Korea
| | - Yoojin Yang
- Center for Molecular Spectroscopy and Dynamics Institute for Basic Science (IBS) Department of Chemistry Korea University Seoul 136-701 South Korea
| | - Donghwan Yoon
- Center for Molecular Spectroscopy and Dynamics Institute for Basic Science (IBS) Department of Chemistry Korea University Seoul 136-701 South Korea
| | - Hionsuck Baik
- Korea Basic Science Institute (KBSI) Seoul 136-713 South Korea
| | - Seungjoo Haam
- Department of Chemical & Biomolecular Engineering Younsei University Seoul 120-749 South Korea
| | - Haesik Yang
- Department of Chemistry and Chemistry, Institute of Functional Materials Pusan University Busan 609-735 South Korea
| | - Kwangyeol Lee
- Center for Molecular Spectroscopy and Dynamics Institute for Basic Science (IBS) Department of Chemistry Korea University Seoul 136-701 South Korea
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234
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Hong JW, Kim Y, Wi DH, Lee S, Lee SU, Lee YW, Choi SI, Han SW. Ultrathin Free-Standing Ternary-Alloy Nanosheets. Angew Chem Int Ed Engl 2016; 55:2753-8. [DOI: 10.1002/anie.201510460] [Citation(s) in RCA: 167] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 12/13/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Jong Wook Hong
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
| | - Yena Kim
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
| | - Dae Han Wi
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
| | - Seunghoon Lee
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
| | - Su-Un Lee
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
| | - Young Wook Lee
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
| | - Sang-Il Choi
- Department of Chemistry and Green-Nano Materials Research Center; Kyungpook National University; Daegu 41566 Korea
| | - Sang Woo Han
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
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235
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Hong JW, Kim Y, Wi DH, Lee S, Lee SU, Lee YW, Choi SI, Han SW. Ultrathin Free-Standing Ternary-Alloy Nanosheets. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510460] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jong Wook Hong
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
| | - Yena Kim
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
| | - Dae Han Wi
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
| | - Seunghoon Lee
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
| | - Su-Un Lee
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
| | - Young Wook Lee
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
| | - Sang-Il Choi
- Department of Chemistry and Green-Nano Materials Research Center; Kyungpook National University; Daegu 41566 Korea
| | - Sang Woo Han
- Center for Nanotectonics; Department of Chemistry and KI for the NanoCentury, KAIST; Daejeon 34141 Korea
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236
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Zhao D, Sun B, Li X, Qin L, Kang S, Wang D. Promoting visible light-driven hydrogen evolution over CdS nanorods using earth-abundant CoP as a cocatalyst. RSC Adv 2016. [DOI: 10.1039/c6ra04612f] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Exploiting earth-abundant cocatalysts for photocatalytic hydrogen evolution is of great interest.
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Affiliation(s)
- Dan Zhao
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai
- China
- Beijing National Laboratory for Molecular Sciences
| | - Bing Sun
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- Institute of Chemistry
- Chinese Academy of Science
- Beijing 100190
| | - Xiangqing Li
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai
- China
| | - Lixia Qin
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai
- China
| | - Shizhao Kang
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai
- China
| | - Dong Wang
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- Institute of Chemistry
- Chinese Academy of Science
- Beijing 100190
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237
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Xu L, Wang K, Yuan Q. One-pot synthesis of lotus-shaped Pd–Cu hierarchical superstructure crystals for formic acid oxidation. RSC Adv 2016. [DOI: 10.1039/c6ra21823g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Lotus-shaped Pd–Cu hierarchical superstructure crystals with enhanced electrocatalytic properties toward HCOOH oxidation were successfully synthesized through an aqueous solution method.
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Affiliation(s)
- Li Xu
- College of Chemistry and Chemical Engineering
- Guizhou University
- Guiyang
- P. R. China
| | - Kai Wang
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Qiang Yuan
- College of Chemistry and Chemical Engineering
- Guizhou University
- Guiyang
- P. R. China
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238
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Chen Y, Xu Q, Hu B, Xu J, Weng J. Unconventional synthesis of Cu–Au dendritic nanowires with enhanced electrochemical activity. RSC Adv 2016. [DOI: 10.1039/c5ra23362c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Cu–Au dendritic nanowires were obtained in high yield with enhanced electrochemical activity and potential application in glucose detection.
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Affiliation(s)
- Yuan Chen
- Department of Biomaterials and Department of Physics
- Xiamen University
- Xiamen
- P. R. China
| | - Qingchi Xu
- Department of Biomaterials and Department of Physics
- Xiamen University
- Xiamen
- P. R. China
- Research Institute for Biomimetics and Soft Matter
| | - Bo Hu
- Department of Biomaterials and Department of Physics
- Xiamen University
- Xiamen
- P. R. China
| | - Jun Xu
- Department of Biomaterials and Department of Physics
- Xiamen University
- Xiamen
- P. R. China
- Research Institute for Biomimetics and Soft Matter
| | - Jian Weng
- Department of Biomaterials and Department of Physics
- Xiamen University
- Xiamen
- P. R. China
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239
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Fan Y, Zhang Y, Cui Y, Wang J, Wei M, Zhang X, Li W. A porous ternary PtPdCu alloy with a spherical network structure for electrocatalytic methanol oxidation. RSC Adv 2016. [DOI: 10.1039/c6ra18720j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
A porous ternary alloy Pt5PdCu5 was prepared, which exhibits a unique spherical network structure with a high specific surface area of 86.9 m2 g−1 and enhanced electrocatalytic activity towards methanol oxidation.
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Affiliation(s)
- Yang Fan
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
- Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains
| | - Yan Zhang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Ying Cui
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Jiaoli Wang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Mengmeng Wei
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Xinkang Zhang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Wei Li
- School of Physics
- Huazhong University of Science and Technology
- Wuhan 430074
- China
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240
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Xiong Y, Ma Y, Lin Z, Xu Q, Yan Y, Zhang H, Wu J, Yang D. Facile synthesis of PtCu3alloy hexapods and hollow nanoframes as highly active electrocatalysts for methanol oxidation. CrystEngComm 2016. [DOI: 10.1039/c6ce01695b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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241
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Hobbs K, Cathcart N, Kitaev V. Gold-plated silver nanoparticles engineered for sensitive plasmonic detection amplified by morphological changes. Chem Commun (Camb) 2016; 52:9785-8. [DOI: 10.1039/c6cc05260f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Morphological changes of gold-plated silver nanoparticles enhance SPR sensing.
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Affiliation(s)
- Krysten Hobbs
- Chemistry Department
- Wilfrid Laurier University
- Waterloo
- Canada
| | - Nicole Cathcart
- Chemistry Department
- Wilfrid Laurier University
- Waterloo
- Canada
| | - Vladimir Kitaev
- Chemistry Department
- Wilfrid Laurier University
- Waterloo
- Canada
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242
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Gowthaman NSK, Sinduja B, John SA. Tuning the composition of gold–silver bimetallic nanoparticles for the electrochemical reduction of hydrogen peroxide and nitrobenzene. RSC Adv 2016. [DOI: 10.1039/c6ra05658j] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Gold@silver core–shell nanoparticles were synthesized by galvanic displacement reaction and modified on glassy carbon electrode for the reduction of hydrogen peroxide and nitrobenzene.
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Affiliation(s)
- N. S. K. Gowthaman
- Centre for Nanoscience and Nanotechnology
- Department of Chemistry
- Gandhigram Rural Institute
- Dindigul
- India
| | - Bharathi Sinduja
- Centre for Nanoscience and Nanotechnology
- Department of Chemistry
- Gandhigram Rural Institute
- Dindigul
- India
| | - S. Abraham John
- Centre for Nanoscience and Nanotechnology
- Department of Chemistry
- Gandhigram Rural Institute
- Dindigul
- India
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243
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Gowthaman NSK, John SA. Fabrication of different copper nanostructures on indium-tin-oxide electrodes: shape dependent electrocatalytic activity. CrystEngComm 2016. [DOI: 10.1039/c6ce01846g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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244
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He C, Tao J, He G, Shen PK, Qiu Y. Unravelling the promoting effect of the ultrathin TaC/RGO nanosheet hybrid for enhanced catalytic activity of Pd nanoparticles. Catal Sci Technol 2016. [DOI: 10.1039/c6cy01043a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A novel two-dimensional ultrathin TaC/reduced graphene oxide (RGO) nanosheet hybrid was employed as a co-catalyst to Pd nanoparticles (Pd/TaC-G).
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Affiliation(s)
- Chunyong He
- Institute of High Energy Physics
- Chinese Academy of Sciences (CAS)
- Beijing 100049
- China
- Dongguan Neutron Science Center
| | - Juzhou Tao
- Institute of High Energy Physics
- Chinese Academy of Sciences (CAS)
- Beijing 100049
- China
- Dongguan Neutron Science Center
| | - Guoqiang He
- Collaborative Innovation Center of Sustainable Energy Materials
- Guangxi University
- Nanning
- PR China
| | - Pei Kang Shen
- Collaborative Innovation Center of Sustainable Energy Materials
- Guangxi University
- Nanning
- PR China
| | - Yongfu Qiu
- College of Chemistry and Environmental Engineering
- Dongguan University of Technology
- PR China
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245
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Cai Z, Lu Z, Bi Y, Li Y, Kuang Y, Sun X. Superior anti-CO poisoning capability: Au-decorated PtFe nanocatalysts for high-performance methanol oxidation. Chem Commun (Camb) 2016; 52:3903-6. [DOI: 10.1039/c5cc10513g] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A surface-engineering strategy is utilized to improve the anti-CO poisoning capability of PtFeAu nanocatalysts, resulting in their high-performance methanol oxidation.
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Affiliation(s)
- Zhao Cai
- State Key Laboratory of Chemical Resource Engineering
- College of Science
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Zhiyi Lu
- State Key Laboratory of Chemical Resource Engineering
- College of Science
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Yongmin Bi
- State Key Laboratory of Chemical Resource Engineering
- College of Science
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Yaping Li
- State Key Laboratory of Chemical Resource Engineering
- College of Science
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Yun Kuang
- State Key Laboratory of Chemical Resource Engineering
- College of Science
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Xiaoming Sun
- State Key Laboratory of Chemical Resource Engineering
- College of Science
- Beijing University of Chemical Technology
- Beijing 100029
- China
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246
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Chai J, Chong H, Wang S, Yang S, Wu M, Zhu M. Controlling the selectivity of catalytic oxidation of styrene over nanocluster catalysts. RSC Adv 2016. [DOI: 10.1039/c6ra23014h] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The water is discovered to control the selectivity by changing the surface composition of Au nanocluster or the valence state of Ag nanocluster.
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Affiliation(s)
- Jinsong Chai
- School of Physics and Materials Science
- Anhui University
- Hefei
- P. R. China
| | - Hanbao Chong
- Modern Experiment and Technology Center
- Anhui University
- Hefei
- P. R. China
| | - Shuxin Wang
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials
- Anhui University
- Hefei
- P. R. China
| | - Sha Yang
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials
- Anhui University
- Hefei
- P. R. China
| | - Mingzai Wu
- School of Physics and Materials Science
- Anhui University
- Hefei
- P. R. China
| | - Manzhou Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials
- Anhui University
- Hefei
- P. R. China
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247
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Hoseini SJ, Bahrami M, Zanganeh M, Roushani M, Rashidi M. Effect of metal alloying on morphology and catalytic activity of platinum-based nanostructured thin films in methanol oxidation reaction. RSC Adv 2016. [DOI: 10.1039/c6ra04518a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
In this paper, alloy thin films with a high degree of alloying were synthesized through a liquid–liquid interface method showing remarkable electrocatalytic activity for the methanol oxidation reaction.
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Affiliation(s)
- S. Jafar Hoseini
- Department of Chemistry
- Faculty of Sciences
- Yasouj University
- Yasouj
- Iran
| | - Mehrangiz Bahrami
- Department of Chemistry
- Faculty of Sciences
- Yasouj University
- Yasouj
- Iran
| | | | - Mahmoud Roushani
- Department of Chemistry
- Faculty of Sciences
- Ilam University
- Ilam
- Iran
| | - Mehdi Rashidi
- Department of Chemistry
- Faculty of Sciences
- Shiraz University
- Shiraz
- Iran
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248
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Fan Y, Zhang Y, Li H, Shen W, Wang J, Wei M. Three-dimensional highly branched Pd3Cu alloy multipods as enhanced electrocatalysts for formic acid oxidation. RSC Adv 2016. [DOI: 10.1039/c6ra07560f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Pd3Cu alloy multipods with three-dimensional highly branched morphology were synthesized, which presents enhanced catalytic performance toward formic acid oxidation.
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Affiliation(s)
- Yang Fan
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Yan Zhang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Huamin Li
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Wenmei Shen
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Jiaoli Wang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Mengmeng Wei
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
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249
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Liu D, Li W, Feng X, Zhang Y. Galvanic replacement synthesis of Ag x Au 1-x @CeO 2 (0 ≤ x ≤ 1) core@shell nanospheres with greatly enhanced catalytic performance. Chem Sci 2015; 6:7015-7019. [PMID: 28808522 PMCID: PMC5532536 DOI: 10.1039/c5sc02774h] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 09/07/2015] [Indexed: 12/18/2022] Open
Abstract
A galvanic replacement strategy has been successfully adopted to design Ag x Au1-x @CeO2 core@shell nanospheres derived from Ag@CeO2 ones. After etching using HAuCl4, the Ag core was in situ replaced with Ag x Au1-x alloy nanoframes, and void spaces were left under the CeO2 shell. Among the as-prepared Ag x Au1-x @CeO2 catalysts, Ag0.64Au0.36@CeO2 shows the optimal catalytic performance, whose catalytic efficiency reaches even 2.5 times higher than our previously reported Pt@CeO2 nanospheres in the catalytic reduction of 4-nitrophenol (4-NP) by ammonia borane (AB). Besides, Ag0.64Au0.36@CeO2 also exhibits a much lower 100% conversion temperature of 120 °C for catalytic CO oxidation compared with the other samples.
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Affiliation(s)
- Dapeng Liu
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education , School of Chemistry and Environment , Beihang University , Beijing 100191 , China .
| | - Wang Li
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education , School of Chemistry and Environment , Beihang University , Beijing 100191 , China .
| | - Xilan Feng
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education , School of Chemistry and Environment , Beihang University , Beijing 100191 , China .
| | - Yu Zhang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education , School of Chemistry and Environment , Beihang University , Beijing 100191 , China .
- International Research Institute for Multidisciplinary Science , Beihang University , Beijing 100191 , P. R. China
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250
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Yang H, Zhang Y, Hu F, Wang Q. Urchin-like CoP Nanocrystals as Hydrogen Evolution Reaction and Oxygen Reduction Reaction Dual-Electrocatalyst with Superior Stability. NANO LETTERS 2015; 15:7616-7620. [PMID: 26474359 DOI: 10.1021/acs.nanolett.5b03446] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
High-performance electrocatalysts with superior stability are critically important for their practical applications in hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR). Herein, we report a facile method to fabricate urchin-like CoP nanocrystals (NCs) as catalyst for both HER and ORR with desirable electrocatalytic activities and long-term stability. The urchin-like CoP NCs with a diameter of 5 μm were successfully prepared by a hydrothermal reaction following a phosphidation treatment in N2 atmosphere and present excellent HER catalytic performance with a low onset overpotential of 50 mV, a small Tafel slope of 46 mV/decade, and an exceptional low overpotential of ~180 mV at a current density of 100 mA cm(-2) with a mass loading density of 0.28 mg/cm(2). Meanwhile, a remarkable ORR catalytic activity was observed with a half-potential of 0.7 V and an onset potential of 0.8 V at 1600 rpm and a scan rate of 5 mV s(-1). More importantly, the urchin-like CoP NCs present superior stability and keep their catalytic activity for at least 10 000 CV cycles for HER in 0.5 M H2SO4 and over 30 000 s for ORR in 0.1 M KOH, which is ascribed to their robust three-dimensional structure. This urchin-like CoP NCs might be a promising replacement to the Pt-based electrocatalysts in water splitting and fuel cells.
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Affiliation(s)
- Hongchao Yang
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Yejun Zhang
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Feng Hu
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Qiangbin Wang
- Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
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