101
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Tan Q, Shu C, Abbott J, Zhao Q, Liu L, Qu T, Chen Y, Zhu H, Liu Y, Wu G. Highly Dispersed Pd-CeO2 Nanoparticles Supported on N-Doped Core–Shell Structured Mesoporous Carbon for Methanol Oxidation in Alkaline Media. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00726] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Qiang Tan
- State Key Laboratory for Mechanical
Behavior of Materials, School of Material Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Chengyong Shu
- State Key Laboratory for Mechanical
Behavior of Materials, School of Material Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Janel Abbott
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Qinfu Zhao
- Institute of Modern Physics, Northwest University, Shaanxi Key Laboratory for Theoretical Physics Frontiers, Xi’an 710069, China
| | - Liting Liu
- Analytical and Testing Center, Northwestern Polytechnical University, Xi’an 710072, China
| | - Ting Qu
- State Key Laboratory for Mechanical
Behavior of Materials, School of Material Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Yuanzhen Chen
- State Key Laboratory for Mechanical
Behavior of Materials, School of Material Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Haiyan Zhu
- Institute of Modern Physics, Northwest University, Shaanxi Key Laboratory for Theoretical Physics Frontiers, Xi’an 710069, China
| | - Yongning Liu
- State Key Laboratory for Mechanical
Behavior of Materials, School of Material Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Gang Wu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
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102
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Silva RM, Camara GA, Giz MJ. Electro-oxidation of ethanol on PtRh surfaces partially covered by Sn. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.04.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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103
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Liang Z, Song L, Deng S, Zhu Y, Stavitski E, Adzic RR, Chen J, Wang JX. Direct 12-Electron Oxidation of Ethanol on a Ternary Au(core)-PtIr(Shell) Electrocatalyst. J Am Chem Soc 2019; 141:9629-9636. [DOI: 10.1021/jacs.9b03474] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhixiu Liang
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Liang Song
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Shiqing Deng
- Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Yimei Zhu
- Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Eli Stavitski
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Radoslav R. Adzic
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jingyi Chen
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Jia X. Wang
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
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104
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Bai J, Liu D, Yang J, Chen Y. Nanocatalysts for Electrocatalytic Oxidation of Ethanol. CHEMSUSCHEM 2019; 12:2117-2132. [PMID: 30834720 DOI: 10.1002/cssc.201803063] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 03/01/2019] [Indexed: 06/09/2023]
Abstract
The use of ethanol as a fuel in direct alcohol fuel cells depends not only on its ease of production from renewable sources, but also on overcoming the challenges of storage and transportation. In an ethanol-based fuel cell, highly active electrocatalysts are required to break the C-C bond in ethanol for its complete oxidation at lower overpotentials, with the aim of increasing the cell performance, ethanol conversion rates, and fuel efficiency. In recent decades, the development of wet-chemistry methods has stimulated research into catalyst design, reactivity tailoring, and mechanistic investigations, and thus, created great opportunities to achieve efficient oxidation of ethanol. In this Minireview, the nanomaterials tested as electrocatalysts for the ethanol oxidation reaction in acid or alkaline environments are summarized. The focus is mainly on nanomaterials synthesized by using wet-chemistry methods, with particular attention on the relationship between the chemical and physical characteristics of the catalysts, for example, catalyst composition, morphology, structure, degree of alloying, presence of oxides or supports, and their activity for ethanol electro-oxidation. As potential alternatives to noble metals, non-noble-metal catalysts for ethanol oxidation are also briefly reviewed. Insights into further enhancing the catalytic performance through the design of efficient electrocatalysts are also provided.
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Affiliation(s)
- Juan Bai
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of, Education), Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710062, PR China
| | - Danye Liu
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering Address, Chinese Academy of Sciences, Beijing, 100190, PR China
- University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Jun Yang
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering Address, Chinese Academy of Sciences, Beijing, 100190, PR China
- University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yu Chen
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of, Education), Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710062, PR China
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105
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Kim KS, Hong Y, Kim HC, Choi SI, Hong JW. Ultrathin-Polyaniline-Coated Pt-Ni Alloy Nanooctahedra for the Electrochemical Methanol Oxidation Reaction. Chemistry 2019; 25:7185-7190. [PMID: 30916839 DOI: 10.1002/chem.201900238] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Indexed: 01/24/2023]
Abstract
Controlling the morphology and composition of nanocatalysts constructed from metals and conductive polymers has attracted attention owing to their great potential for the development of high-efficiency catalysts for various catalytic applications. Herein, a facile synthetic approach for ultrathin-polyaniline-coated Pt-Ni nanooctahedra (Pt-Ni@PANI hybrids) with controllable PANI shell thicknesses is presented. Pt-Ni nanooctahedra/C catalysts enclosed by PANI shells with thicknesses from 0.6 to 2.4 nm were obtained by fine control over the amount of aniline. The various Pt-Ni@PANI hybrids exhibited electrocatalytic activity toward the methanol oxidation reaction that is highly dependent on the thickness of the PANI shell. Pt-Ni@PANI hybrids with the thinnest PANI shells (0.6 nm) showed markedly improved electrocatalytic performance for the methanol oxidation reaction compared with Pt-Ni@PANI hybrids with thicker PANI shells, Pt-Ni nanooctahedra/C, and commercial Pt/C due to synergistic benefits of ultrathin PANI shells and Pt-Ni alloy.
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Affiliation(s)
- Kyung Soo Kim
- Department of Chemistry, University of Ulsan, Ulsan, 44776, Korea
| | - Youngmin Hong
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, Daegu, 41566, Korea
| | - Heon Chul Kim
- Department of Chemistry, University of Ulsan, Ulsan, 44776, Korea
| | - Sang-Il Choi
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, Daegu, 41566, Korea
| | - Jong Wook Hong
- Department of Chemistry, University of Ulsan, Ulsan, 44776, Korea
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106
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Real-time electrochemical ATR-SEIRAS investigation of CO adsorption and oxidation on Rh electrode in 0.1 M NaOH and 0.1 M H2SO4. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.04.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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107
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Marinkovic NS, Li M, Adzic RR. Pt-Based Catalysts for Electrochemical Oxidation of Ethanol. Top Curr Chem (Cham) 2019; 377:11. [PMID: 30949779 DOI: 10.1007/s41061-019-0236-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 03/18/2019] [Indexed: 10/27/2022]
Abstract
Despite its attractive features as a power source for direct alcohol fuel cells, utilization of ethanol is still hampered by both fundamental and technical challenges. The rationale behind the slow and incomplete ethanol oxidation reaction (EOR) with low selectivity towards CO2 on most Pt-based catalysts is still far from being understood, and a number of practical problems need to be addressed before an efficient and low-cost catalyst is designed. Some recent achievements towards solving these problems are presented. Pt film electrodes and Pt monolayer (PtML) electrodes on various single crystal substrates showed that EOR follows the partial oxidation pathway without C-C bond cleavage, with acetic acid and acetaldehyde as the final products. The role of the substrate lattice on the catalytic properties of PtML was proven by the choice of appropriate M(111) structure (M = Pd, Ir, Rh, Ru and Au) showing enhanced kinetics when PtML is under tensile strain on Au(111) electrode. Nanostructured electrocatalysts containing Pt-Rh solid solution on SnO2 and Pt monolayer on non-noble metals are shown, optimized, and characterized by in situ methods. Electrochemical, in situ Fourier transform infrared (FTIR) and X-ray absorption spectroscopy (XAS) techniques highlighted the effect of Rh in facilitating C-C bond splitting in the ternary PtRh/SnO2 catalyst. In situ FTIR proved quantitatively the enhancement in the total oxidation pathway to CO2, and in situ XAS confirmed that Pt and Rh form a solid solution that remains in metallic form through a wide range of potentials due to the presence of SnO2. Combination of these findings with density functional theory calculations revealed the EOR reaction pathway and the role of each constituent of the ternary PtRh/SnO2 catalyst. The optimal Pt:Rh:Sn atomic ratio was found by the two in situ techniques. Attempts to replace Rh with cost-effective alternatives for commercially viable catalysts has shown that Ir can also split the C-C bond in ethanol, but the performance of optimized Pt-Rh-SnO2 is still higher than that of the Pt-Ir-SnO2 catalyst.
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Affiliation(s)
| | - Meng Li
- Brookhaven National Laboratory, Upton, NY, USA
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108
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Zhu C, Lan B, Wei RL, Wang CN, Yang YY. Potential-Dependent Selectivity of Ethanol Complete Oxidation on Rh Electrode in Alkaline Media: A Synergistic Study of Electrochemical ATR-SEIRAS and IRAS. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00138] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chan Zhu
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu, 610041 Sichuan Province, China
| | - Bin Lan
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu, 610041 Sichuan Province, China
| | - Rui-Lin Wei
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu, 610041 Sichuan Province, China
| | - Chao-Nan Wang
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu, 610041 Sichuan Province, China
| | - Yao-Yue Yang
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu, 610041 Sichuan Province, China
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109
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Tchaplyguine M, Wright C, Shavorskiy A, Zhu S, Mikkelä MH, Zhang C, Björneholm O, Mårsell E, Mikkelsen A, Sorensen S, Hetherington CJD, Wallenberg LR. Tin-oxide nanoparticles deposited from a beam: what happens to the composition? Phys Chem Chem Phys 2019; 21:6287-6295. [PMID: 30834904 DOI: 10.1039/c8cp06168h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The debate around the oxidation states occurring in laboratory-prepared tin-oxide samples has been for a long time an obstacle for an unambiguous assignment of characterization studies performed on such samples. In particular the changes in the Sn core-level energies caused by oxidation - i.e. the chemical shifts - as measured by photoelectron spectroscopy (PES) have been under discussion. The assignment problem is especially pronounced for nanoscale structures, which are important for photovoltaics, electronics, catalysis, and gas sensing. The reasons for the difficulties lie both in the natural properties of tin oxides, which can have substantial deficiencies of oxygen and tin in the lattice, and in the shortcomings of the fabrication and PES-characterization procedures themselves. Our recent PES study on tin-oxide nanoparticles fabricated by vapour-aggregation gave a chemical shift two times larger than earlier reported for Sn(iv) oxide for the Sn 4d level. The implemented fabrication technique forms an in-vacuum beam of particles whose composition can be both controlled and characterized by PES. In the present work SnO and SnO2 nanoparticles fabricated this way were deposited from the beam and probed by PES directly, as well as after exposure to air. The deposited nanoparticle films were also imaged by TEM (Transmission Electron Microscopy). The effects of the deposition process and exposure to air on the chemical composition were studied. The PES study of deposited SnO2 nanoparticles in the Sn 4d and Sn 3d core-level regions revealed the same core level shift as for unsupported nanoparticles, indicating that the chemical composition is preserved in the deposition process. The TEM study demonstrated a crystalline structure of separate SnO2 particles with lattice constants close to the macroscopic Sn(iv)-oxide. The PES study on the particles exposed to air showed changes in the composition. For the film of initially SnO particles a higher intermediate oxide was created. For the SnO2 nanoparticle film a lower, but strong, intermediate oxide was observed, likely at the surface.
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110
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Kumawat AS, Sarkar A. Electrochemical reduction of CO2 on Pb–Bi–Sn metal mixtures: importance of eutectics. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0313-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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111
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Kashyap D, Teller H, Schechter A. Dimethyl Ether Oxidation on an Active SnO2/Pt/C Catalyst for High‐Power Fuel Cells. ChemElectroChem 2019. [DOI: 10.1002/celc.201900216] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Diwakar Kashyap
- Department of Chemical SciencesAriel University Ariel 40700 Israel
| | - Hanan Teller
- Department of Chemical SciencesAriel University Ariel 40700 Israel
| | - Alex Schechter
- Department of Chemical SciencesAriel University Ariel 40700 Israel
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112
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Investigation of electrophoretic deposition behavior of fluorinated poly(methacrylate)s: A new paradigm of electrophoretic non-ionic polymers. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.01.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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113
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One-pot construction of N-doped graphene supported 3D PdAg nanoflower as efficient catalysts for ethylene glycol electrooxidation. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.10.059] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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114
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Kim M, Lee C, Ko SM, Nam JM. Metal alloy hybrid nanoparticles with enhanced catalytic activities in fuel cell applications. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2018.11.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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115
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Wang X, Chen S, Tang X, Lin D, Qiu P. Ultrasensitive detection of uric acid in serum of patients with gout by a new assay based on Pt@Ag nanoflowers. RSC Adv 2019; 9:36578-36585. [PMID: 35539041 PMCID: PMC9075122 DOI: 10.1039/c9ra06481h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 10/29/2019] [Indexed: 01/02/2023] Open
Abstract
A ultrasensitive assay for the determination of uric acid (UA) based on Pt@Ag nanoflowers (Pt@Ag NFs) was constructed. H2O2 was formed by the reaction of uricase and UA and produced the hydroxyl radical (˙OH). The system was catalyzed by Pt@Ag NFs to change the color of 3,3′,5,5′-tetramethylbenzidine (TMB) from colorless to blue, and the morphology and chemical properties of Pt@Ag NFs were characterized by transmission electron microscopy and X-ray photoelectron spectroscopy. Under the optimized conditions, a linear relationship between the absorbance and UA concentration was in the range of 0.5–150 μM (R2 = 0.995) with a limit of detection of 0.3 μM (S/N = 3). The method can be applied to detection of UA in actual samples with satisfactory results. The proposed assay was successfully applied to the detection of UA in human serum with recoveries over 96.8%. Thus, these results imply that the UA assay provides an effective tool in fast clinical analysis of gout. A ultrasensitive assay for the determination of uric acid (UA) based on Pt@Ag nanoflowers (Pt@Ag NFs) was constructed.![]()
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Affiliation(s)
- Xue Wang
- Department of Chemistry
- Nanchang University
- Nanchang
- China
| | - Shujun Chen
- Department of Chemistry
- Nanchang University
- Nanchang
- China
| | - Xiaomin Tang
- The Fourth Affiliated Hospital of Nanchang University
- Nanchang
- China
| | - Daiqin Lin
- Jiangxi Province Product Quality Supervision Testing Institute
- Nanchang
- China
| | - Ping Qiu
- Department of Chemistry
- Nanchang University
- Nanchang
- China
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116
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Liu Y, Hu P, Wei M, Wang C. Electrocatalytic Study of Ethylene Glycol Oxidation on Pt
3
Sn Alloy Nanoparticles. ChemElectroChem 2018. [DOI: 10.1002/celc.201801616] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yifan Liu
- Department of Chemical and Biomolecular Engineering Johns Hopkins University 3400 North Charles Street Baltimore MD 21218
| | - Pingfan Hu
- Department of Chemical and Biomolecular Engineering Johns Hopkins University 3400 North Charles Street Baltimore MD 21218
| | - Miaojin Wei
- Department of Chemical and Biomolecular Engineering Johns Hopkins University 3400 North Charles Street Baltimore MD 21218
| | - Chao Wang
- Department of Chemical and Biomolecular Engineering Johns Hopkins University 3400 North Charles Street Baltimore MD 21218
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117
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Zhu M, Sun Z, Zhang Z, Zhang S. Ultrasensitive SERS detection of highly homologous miRNAs by generating 3D organic-nanoclusters and a functionalized chip with locked nucleic acid probes. Chem Commun (Camb) 2018; 54:13431-13434. [PMID: 30430153 DOI: 10.1039/c8cc08231f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Herein, a new finding is reported that 3D organic-nanoclusters (3DONs) with superior SERS properties as an original reporter could accurately and sensitively distinguish microRNAs (miRNAs) with highly similar sequences, even with a single-nucleotide difference, as a result of a functionalized chip with locked nucleic acid probes (LNAP-chip) and rolling circle replication (RCA). Furthermore, the innovative SERS-method could be used to broadly discriminate cancer cells from normal cells and evaluate changes in the expression levels of intracellular miRNAs.
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Affiliation(s)
- Mengting Zhu
- Shandong Province Key Laboratory of Life-Organic Analysis, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
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118
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He Z, Tong Y, Ni S, Ye X, Makwarimba CP, Huang X, Zhang S, Song S. Electrochemically reductive dechlorination of 3,6-dichloropicolinic acid on a palladium/nitrogen-doped carbon/nickel foam electrode. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.09.188] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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119
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Wang K, Du H, Sriphathoorat R, Shen PK. Vertex-Type Engineering of Pt-Cu-Rh Heterogeneous Nanocages for Highly Efficient Ethanol Electrooxidation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1804074. [PMID: 30252952 DOI: 10.1002/adma.201804074] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/04/2018] [Indexed: 06/08/2023]
Abstract
Mastery over the architecture and elemental distribution of metal nanocrystals at the nanoscale can effectively tailor and improve their catalytic properties. Herein, the vertex-type-selective growth of metallic nanohorns on a central nanocrystal is constructed via a one-pot solvothermal synthesis, despite the fact that the site-selective epitaxy of the second phase proceeds on all the vertices of the seeds. The prepared vertex-type-selective Pt-Cu-Rh heterogeneous nanocages (HNCs) are composed of a Rh-decorated Pt-Cu rhombic dodecahedral nanocage and six Pt-Cu-Rh nanohorns protruding from the {100} rather than the {111} vertices of rhombic dodecahedron. Impressively, the Pt-Cu-Rh HNCs exhibit 8.1 times higher specific and 6.8 times higher mass activity toward the ethanol oxidation reaction under acidic conditions than commercial Pt/C catalysts. Besides, the peak potential for CO oxidation on Pt-Cu-Rh HNCs (370.4 mV vs SCE) is 182.0 mV more negative than that on Pt/C, indicating the dramatically enhanced CO tolerance. The excellent electrocatalytic property is attributed to the synergistic effect between Pt, Cu, and Rh components, high specific surface area of nanocages and nanohorns, as well as abundant concave/convex sites and various high-index facets around the surface.
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Affiliation(s)
- Kai Wang
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
- Collaborative Innovation Center of Sustainable Energy Materials, Guangxi University, Nanning, 530004, P. R. China
| | - Hongyu Du
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Rinrada Sriphathoorat
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Pei Kang Shen
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
- Collaborative Innovation Center of Sustainable Energy Materials, Guangxi University, Nanning, 530004, P. R. China
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120
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Liu Y, Wei M, Raciti D, Wang Y, Hu P, Park JH, Barclay M, Wang C. Electro-Oxidation of Ethanol Using Pt3Sn Alloy Nanoparticles. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03763] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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121
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Ostojic N, Duan Z, Galyamova A, Henkelman G, Crooks RM. Electrocatalytic Study of the Oxygen Reduction Reaction at Gold Nanoparticles in the Absence and Presence of Interactions with SnOx Supports. J Am Chem Soc 2018; 140:13775-13785. [DOI: 10.1021/jacs.8b08036] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Nevena Ostojic
- Department of Chemistry, Center for Electrochemistry, and Texas Materials Institute, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
| | - Zhiyao Duan
- Department of Chemistry, Center for Electrochemistry, and Texas Materials Institute, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
| | - Aigerim Galyamova
- Department of Chemistry, Center for Electrochemistry, and Texas Materials Institute, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
| | - Graeme Henkelman
- Department of Chemistry, Center for Electrochemistry, and Texas Materials Institute, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
| | - Richard M. Crooks
- Department of Chemistry, Center for Electrochemistry, and Texas Materials Institute, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
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122
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Xu H, Zhang K, Liu C, Tian L, Du Y. 3D‐1D Heterostructure of CoZn Oxyphosphide Nanosheets Anchored on Carbon Nanotubes as Electrocatalysts for the Oxygen Evolution Reaction. ChemElectroChem 2018. [DOI: 10.1002/celc.201800656] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hui Xu
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 P.R. China
| | - Ke Zhang
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 P.R. China
| | - Chaofan Liu
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 P.R. China
| | - Lin Tian
- College of Chemistry and Chemical EngineeringXuzhou University of Technology Xuzhou 221111 P.R. China
| | - Yukou Du
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 P.R. China
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123
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Xu H, Wei J, Zhang K, Shiraishi Y, Du Y. Hierarchical NiMo Phosphide Nanosheets Strongly Anchored on Carbon Nanotubes as Robust Electrocatalysts for Overall Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2018; 10:29647-29655. [PMID: 30079718 DOI: 10.1021/acsami.8b10314] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Although a great achievement has been made in the field of electrochemistry, the exploration of high-efficiency catalysts for the generation of hydrogen and oxygen via overall water splitting is still a grand challenge. We herein report the successful construction of a new class of hierarchical catalysts with defect-enriched nickel-molybdenum phosphide nanosheets anchored on the surface of carbon nanotubes for efficient water splitting. Via the construction of a hierarchical nanostructure, more efficient electron mobility and mass transfer occurrence were achieved, resulting in a substantial enhancement of electrocatalytic performances. Interestingly, overpotentials of only 255 and 135 mV are required for the optimized Ni1Mo1P NSs@MCNTs to afford a current of 10 mA cm-2 for oxygen evolution reaction and hydrogen evolution reaction, respectively. More significantly, the introduction of molybdenum and phosphorus is also significant for exposing surface active sites and modifying the bonding energy between hydrogen and metals; all of these advantages have endowed the Ni1Mo1P NSs@MCNTs//Ni1Mo1P NSs@MCNTs couple to display highly efficient water electrocatalysis property with a relatively low overall potential of 1.601 V at 10 mA cm-2, shedding bright light for large-scale overall water electrocatalysis.
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Affiliation(s)
- Hui Xu
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
| | - Jingjing Wei
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
| | - Ke Zhang
- The Institute of Scientific and Industrial Research (SANKEN) , Osaka University , Mihogaoka 8-1 , Ibaraki , Osaka 567-0047 , Japan
| | - Yukihide Shiraishi
- Tokyo University of Science Yamaguchi , Sanyo-Onoda-shi , Yamaguchi 756-0884 , Japan
| | - Yukou Du
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
- Tokyo University of Science Yamaguchi , Sanyo-Onoda-shi , Yamaguchi 756-0884 , Japan
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124
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Silva W, Queiroz A, Paganin V, Lima F. Faradaic efficiency of ethanol oxidation to CO2 at metallic nanoparticle/short-side-chain PFSA solid-state electrolyte interfaces investigated by on-line DEMS. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.07.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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125
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Zhang J, Ye J, Fan Q, Jiang Y, Zhu Y, Li H, Cao Z, Kuang Q, Cheng J, Zheng J, Xie Z. Cyclic Penta-Twinned Rhodium Nanobranches as Superior Catalysts for Ethanol Electro-oxidation. J Am Chem Soc 2018; 140:11232-11240. [PMID: 30117323 DOI: 10.1021/jacs.8b03080] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Developing active and durable electro-catalysts toward ethanol oxidation reaction (EOR) with high selectivity toward the C-C bond cleavage is an important issue for the commercialization of direct ethanol fuel cell. Unfortunately, current ethanol oxidation electro-catalysts (e.g., Pt, Pd) still suffer from poor selectivity for direct oxidation of ethanol to CO2, and rapid activity degradation. Here we report a facile route to the synthesis of a new kind of cyclic penta-twinned (CPT) Rh nanostructures that are self-supported nanobranches (NBs) built with 1-dimension CPT nanorods as subunits. Structurally, the as-prepared Rh NBs possess high percentage of open {100} facets with significant CPT-induced lattice strains. With these unique structural characteristics, the as-prepared CPT Rh NBs exhibit outstanding electrocatalytic performance toward EOR in alkaline solution. Most strikingly, the selectivity of complete conversion ethanol to CO2 on the CPT Rh NBs is measured to be as high as 14.5 ± 1.1% at -0.15 V, far exceeding that for single-crystal tetrahedral nanocrystals, icosahedral nanocrystals, and commercial Rh black, as well as majority of reported values for Pt or Pd-based electro-catalysts. By combining with density functional theory calculation, the effects of different structural features of Rh on EOR are definitively elucidated. It was found that the large amount of open Rh (100) facets dominantly contribute to the outstanding activity and exceptionally high selectivity, while the additional tensile strain on (100) planes can further boost the catalytic activity by enhancing the adsorption strength and lowering the reaction barrier of dehydrogenation process of ethanol. As a proof of concept, the present work shows that rationally optimizing surface and electronic structure of electro-catalysts by simultaneously engineering their surface and bulk structures is a promising strategy to promote the performance of electro-catalysts.
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Affiliation(s)
- Jiawei Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Jinyu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Qiyuan Fan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Yating Jiang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Yifan Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Huiqi Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Zhenming Cao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Qin Kuang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Jun Cheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Jun Zheng
- Institute of Physical Science and Information Technology , Anhui University , Hefei 230601 , P. R. China
| | - Zhaoxiong Xie
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China.,Pen-Tung Sah Institute of Micro-Nano Science and Technology , Xiamen University , Xiamen 361005 , P. R. China
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126
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Zhang Z, Wu Q, Mao K, Chen Y, Du L, Bu Y, Zhuo O, Yang L, Wang X, Hu Z. Efficient Ternary Synergism of Platinum/Tin Oxide/Nitrogen-Doped Carbon Leading to High-Performance Ethanol Oxidation. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01573] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zhiqi Zhang
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Laboratory for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People’s Republic of China
| | - Qiang Wu
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Laboratory for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People’s Republic of China
| | - Kun Mao
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Laboratory for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People’s Republic of China
| | - Yugang Chen
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Laboratory for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People’s Republic of China
| | - Lingyu Du
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Laboratory for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People’s Republic of China
| | - Yongfeng Bu
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Laboratory for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People’s Republic of China
| | - Ou Zhuo
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Laboratory for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People’s Republic of China
| | - Lijun Yang
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Laboratory for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People’s Republic of China
| | - Xizhang Wang
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Laboratory for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People’s Republic of China
| | - Zheng Hu
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Laboratory for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People’s Republic of China
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127
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Xu H, Song P, Wang J, Du Y. Shape-Controlled Synthesis of Platinum-Copper Nanocrystals for Efficient Liquid Fuel Electrocatalysis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7981-7988. [PMID: 29916718 DOI: 10.1021/acs.langmuir.8b01729] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Well-defined noble metal nanomaterials are attractive as catalysts for various applications because of abundant surface-active sites. However, the shape-controlled synthesis of high-performance Pt-based nanocatalysts remains a forbidden challenge. We herein demonstrate a versatile approach for realizing the systemically controlled syntheses of bimetallic Pt-Cu nanocrystals (NCs) from concave nanocubes (CNCs), to excavated nanocubes, to tripods via simply switching the amount of glycine (reducing agent). These Pt-Cu nanostructures supply a desirable platform for carrying out the structure-dependent electrocatalytic studies in the liquid fuel electro-oxidation. Impressively, all of the Pt-Cu NCs show high activity and outstanding durability for alcohol oxidation. In particular, the Pt-Cu CNCs display unprecedent high activity toward MOR and EOR, which are found to be 2041.1 and 5760.9 mA mg-1 in mass activity, 7.9- and 11.5-folds greater than the commercial Pt/C catalysts, respectively, showing a promising class of electrocatalysts for fuel cells. This work sheds great promise for optimizing the electrochemical catalysis by precisely modulating the structure of catalysts.
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Affiliation(s)
- Hui Xu
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
| | - Pingping Song
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
| | - Jin Wang
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
| | - Yukou Du
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
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128
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Calvillo L, Mendez De Leo L, Thompson SJ, Price SW, Calvo EJ, Russell AE. In situ determination of the nanostructure effects on the activity, stability and selectivity of Pt-Sn ethanol oxidation catalysts. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.09.060] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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129
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Zhou Y, Shen Y, Piao J. Sustainable Conversion of Glycerol into Value-Added Chemicals by Selective Electro-Oxidation on Pt-Based Catalysts. ChemElectroChem 2018. [DOI: 10.1002/celc.201800309] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yongfang Zhou
- Department School of Food Science and Engineering; South China University of Technology; 381 Wushan Road Tianhe District, Guangzhou P.R. China 510641
| | - Yi Shen
- Department School of Food Science and Engineering; South China University of Technology; 381 Wushan Road Tianhe District, Guangzhou P.R. China 510641
| | - Jinhua Piao
- Department School of Food Science and Engineering; South China University of Technology; 381 Wushan Road Tianhe District, Guangzhou P.R. China 510641
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130
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Drzymała E, Gruzeł G, Pajor-Świerzy A, Depciuch J, Socha R, Kowal A, Warszyński P, Parlinska-Wojtan M. Design and assembly of ternary Pt/Re/SnO 2 NPs by controlling the zeta potential of individual Pt, Re, and SnO 2 NPs. JOURNAL OF NANOPARTICLE RESEARCH : AN INTERDISCIPLINARY FORUM FOR NANOSCALE SCIENCE AND TECHNOLOGY 2018; 20:144. [PMID: 29780276 PMCID: PMC5949135 DOI: 10.1007/s11051-018-4244-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 04/30/2018] [Indexed: 06/01/2023]
Abstract
In this study Pt, Re, and SnO2 nanoparticles (NPs) were combined in a controlled manner into binary and ternary combinations for a possible application for ethanol oxidation. For this purpose, zeta potentials as a function of the pH of the individual NPs solutions were measured. In order to successfully combine the NPs into Pt/SnO2 and Re/SnO2 NPs, the solutions were mixed together at a pH guaranteeing opposite zeta potentials of the metal and oxide NPs. The individually synthesized NPs and their binary/ternary combinations were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning transmission electron microscopy (STEM) combined with energy dispersive X-ray spectroscopy (EDS) analysis. FTIR and XPS spectroscopy showed that the individually synthesized Pt and Re NPs are metallic and the Sn component was oxidized to SnO2. STEM showed that all NPs are well crystallized and the sizes of the Pt, Re, and SnO2 NPs were 2.2, 1.0, and 3.4 nm, respectively. Moreover, EDS analysis confirmed the successful formation of binary Pt/SnO2 and Re/SnO2 NP, as well as ternary Pt/Re/SnO2 NP combinations. This study shows that by controlling the zeta potential of individual metal and oxide NPs, it is possible to assemble them into binary and ternary combinations. Graphical abstractᅟ.
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Affiliation(s)
- Elżbieta Drzymała
- Institute of Nuclear Physics Polish Academy of Sciences, PL-31342 Krakow, Poland
| | - Grzegorz Gruzeł
- Institute of Nuclear Physics Polish Academy of Sciences, PL-31342 Krakow, Poland
| | - Anna Pajor-Świerzy
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland
| | - Joanna Depciuch
- Institute of Nuclear Physics Polish Academy of Sciences, PL-31342 Krakow, Poland
| | - Robert Socha
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland
| | - Andrzej Kowal
- Institute of Nuclear Physics Polish Academy of Sciences, PL-31342 Krakow, Poland
| | - Piotr Warszyński
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland
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131
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Zhang Q, Guo L, Hao Z. Exploration of high-performance W 6 S 8 -supported single-atom Rh 1 catalysts for reverse water–gas shift reaction and methanol formation via DFT computational study. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.01.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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132
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Li F, MacFarlane DR, Zhang J. Recent advances in the nanoengineering of electrocatalysts for CO 2 reduction. NANOSCALE 2018; 10:6235-6260. [PMID: 29569672 DOI: 10.1039/c7nr09620h] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Emissions of CO2 from fossil fuel combustion and industrial processes have been regarded as the dominant cause of global warming. Electrochemical CO2 reduction (ECR), ideally in aqueous media, could potentially solve this problem by the storage of energy from renewable sources in the form of chemical energy in fuels or value-added chemicals in a sustainable manner. However, because of the sluggish reaction kinetics of the ECR, efficient, selective, and durable electrocatalysts are required to increase the rate this reaction. Despite considerable progress in using bulk metallic electrodes for catalyzing the ECR, greater efforts are still needed to tackle this grand challenge. In this Review, we highlight recent progress in using nanoengineering strategies to promote the electrocatalysts for the ECR. Through these approaches, considerable improvements in catalytic performance have been achieved. An outlook of future developments in applying and optimizing these strategies is also proposed.
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Affiliation(s)
- Fengwang Li
- ARC Centre of Excellence for Electromaterials Science, School of Chemistry, Monash University, Victoria 3800, Australia.
| | - Douglas R MacFarlane
- ARC Centre of Excellence for Electromaterials Science, School of Chemistry, Monash University, Victoria 3800, Australia.
| | - Jie Zhang
- ARC Centre of Excellence for Electromaterials Science, School of Chemistry, Monash University, Victoria 3800, Australia.
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133
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Xu H, Song P, Yan B, Wang J, Wang C, Shiraishi Y, Yang P, Du Y. Pt Islands on 3 D Nut-like PtAg Nanocrystals for Efficient Formic Acid Oxidation Electrocatalysis. CHEMSUSCHEM 2018; 11:1056-1062. [PMID: 29316263 DOI: 10.1002/cssc.201702409] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 01/03/2018] [Indexed: 06/07/2023]
Abstract
Precise control of structures offers a great opportunity to efficiently tune the catalytic performance of nanomaterials, enhacing both their activity and durability. Herein, we achieve a new class of Pt islands on 3 D nut-like PtAg nanocrystals by exploiting the lower electronegativity of Ag in conjunction with the galvanic replacement of catalytically active Pt to Ag. Such nanostructures coated with Pt nanoparticles, exhibiting exposed facets, and active surface composition enhance formic acid oxidation electrocatalysis with optimized PtAg1 nut-like catalysts and achieved a factor of 4.0 and 2.4 in mass and specific activities (1728.3 mA mg-1 and 3.31 mA cm-2 ) relative to those of the commercial Pt/C (431.2 mA mg-1 and 1.41 mA cm-2 ), respectively. Moreover, such 3 D PtAg1 nut-like catalysts also display great enhancement in durability with less decay for at last 500 cycles, showing a great potential to serve as promising catalysts for fuel cells and other applications. Our work provides a fundamental insight on the effect of the morphology toward liquid fuel electrooxidation, which may pave a new way for the fabrication of highly efficient electrocatalysts for fuel cells.
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Affiliation(s)
- Hui Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Pingping Song
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Bo Yan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Jin Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Caiqin Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
- Tokyo University of Science Yamaguchi, Sanyo-Onoda-shi, Yamaguchi, 756-0884, Japan
| | - Yukihide Shiraishi
- Chemistry Department, University of Toronto, Toronto, M5S3H4, RP, Canada
| | - Ping Yang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yukou Du
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
- Chemistry Department, University of Toronto, Toronto, M5S3H4, RP, Canada
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134
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Zhu H, Li Q, Ren Y, Gao Q, Chen J, Wang N, Deng J, Xing X. A New Insight into Cross-Sensitivity to Humidity of SnO 2 Sensor. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703974. [PMID: 29377613 DOI: 10.1002/smll.201703974] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Indexed: 05/25/2023]
Abstract
The efficiency of gas sensors varies enormously from fundamental study to practical application. This big gap comes mainly from the complex and unpredictable effect of atmospheric environment, especially in humidity. Here, the cross-sensitivity to humidity of a SnO2 sensor from local structural and lattice evolutions is studied. The sensing response of ethanol is found to be efficiently activated by adsorbing trace of water but inhibited as humidity increases. By X-ray diffraction, pair distribution function of synchrotron and ab initio calculations, the independent effect of water and ethanol on lattice and local structure are clearly revealed, which elucidate the intricate sensing reactions. The formation of hydrogen bonds and repulsion of ethoxides play key roles in the structural distortions, and also in adsorption energies that are critical to the sensitive behavior. The results show the sensor performance coupled with local structural evolution, which provides a new insight into the controversial effects of humidity on SnO2 sensors.
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Affiliation(s)
- He Zhu
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Qiang Li
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Yang Ren
- Argonne National Laboratory, X-Ray Science Division, Argonne, IL, 60439, USA
| | - Qilong Gao
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jun Chen
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Na Wang
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jinxia Deng
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Xianran Xing
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
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135
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Eid K, Ahmad YH, Yu H, Li Y, Li X, AlQaradawi SY, Wang H, Wang L. Rational one-step synthesis of porous PtPdRu nanodendrites for ethanol oxidation reaction with a superior tolerance for CO-poisoning. NANOSCALE 2017; 9:18881-18889. [PMID: 29177288 DOI: 10.1039/c7nr07609f] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Precise fabrication of porous ternary Pt-based nanodendrites is very important for electrochemical energy conversion owing to high surface area and great molecular accessibility of these nanodendrites. Herein, PtPdRu porous nanodendrites (PNDs) were prepared via a facile one-step ultrasonic irradiation approach at room temperature. Intriguingly, the ultrasonic irradiation drove the formation of PtPdRu PNDs with spatially interconnected porous structures, whereas magnetic stirring produced PtPdRu nanoflowers (NFs) with less porosity. The formation mechanism was ascribed to the acoustic cavitation effect and fast-reduction kinetics under sonication. The as-made PtPdRu PNDs displayed a superior catalytic performance towards ethanol oxidation reaction with a high tolerance for CO-poisoning as compared to PtPdRu NFs, PtPd NDs, and commercial Pt/C catalyst.
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Affiliation(s)
- Kamel Eid
- Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, Doha 2713, Qatar.
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136
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Chu W, Luo J, Paul S, Liu Y, Khodakov A, Bordes E. Synthesis and performance of vanadium-based catalysts for the selective oxidation of light alkanes. Catal Today 2017. [DOI: 10.1016/j.cattod.2017.05.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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137
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Enhanced Photocatalytic Activity from Mixture-Fuel Cells by ZnO Template-Assisted Pd-Pt Hollow Nanorods. ChemistrySelect 2017. [DOI: 10.1002/slct.201701406] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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138
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Zhu M, Shao Q, Pi Y, Guo J, Huang B, Qian Y, Huang X. Ultrathin Vein-Like Iridium-Tin Nanowires with Abundant Oxidized Tin as High-Performance Ethanol Oxidation Electrocatalysts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1701295. [PMID: 28719034 DOI: 10.1002/smll.201701295] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 06/15/2017] [Indexed: 06/07/2023]
Abstract
Iridium (Ir) holds great promise for ethanol oxidation reaction (EOR), while its practical applications suffer from the limited shape-controlled synthesis due to its low-energy barrier for nucleation. To overcome this limitation, the preparation of a new class of ultrathin vein-like Ir-tin nanowires (IrSn NWs) with abundant oxidized Sn is reported. By tuning the ratio of Ir to Sn, the optimized Ir67 Sn33 /C exhibits the highest mass density of 95.6 mA mg-1 Ir for EOR at low potential (0.04 V), which is 4.1-fold and 20-fold higher than that of Ir/C and the commercial Pt/C, respectively. It also exhibits the smallest Tafel slope of 153 mV dec-1 and superior stability after 2 h chronoamperometric measurement. Electrochemical measurements and X-ray photoelectron spectra results confirm that the abundant oxidized Sn promotes a complete oxidization of ethanol into CO2 at low potential. This work highlights the importance of non-noble metal on enhancing the EOR performance.
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Affiliation(s)
- Meiwu Zhu
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, East China University of Technology, Nanchang, Jiangxi, 330013, China
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
| | - Qi Shao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
| | - Yecan Pi
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
| | - Jun Guo
- Testing and Analysis Center, Soochow University, Jiangsu, 215123, China
| | - Bin Huang
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, East China University of Technology, Nanchang, Jiangxi, 330013, China
| | - Yong Qian
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, East China University of Technology, Nanchang, Jiangxi, 330013, China
| | - Xiaoqing Huang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
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139
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Abstract
To elucidate the atomic arrangement of a Pt-Rh-Sn ternary catalyst with a high catalytic activity for ethanol oxidation reaction (EOR) and high CO2 selectivity, we prepared a tandem Pt/Rh/SnOx, in which a Rh adlayer was deposited on a Pt substrate (Rh coverage: 0.28), followed by depositing several layers of SnOx only on the Rh surface (Sn coverage: 0.07). For reference, Sn was randomly deposited on the Rh-modified Pt (Pt/Rh) electrode whose Rh and Sn coverages were 0.22 and 0.36 (random Pt/Rh/SnOx). X-ray photoelectron spectroscopy demonstrated that Pt and Rh were metallic, and Sn was largely oxidized. Both Pt/Rh/SnOx electrodes were less positive in onset potential of EOR current density and higher in EOR current density than Pt and Rh/Pt electrodes. In situ infrared reflection-absorption spectroscopy demonstrated that the tandem Pt/Rh/SnOx electrode did not produce acetic acid, but produced CO2 in contrast to the random Pt/Rh/SnOx, suggesting that a tandem arrangement of Pt, Rh and SnOx, in which the Pt and SnOx sites were separated by the Rh sites, was effective for selective CO2 production. In the electrostatic electrolysis at 0.5 V vs. RHE, the tandem Pt/Rh/SnOx electrode exhibited higher EOR current density than the Pt and Pt/Rh electrodes after 1.5 h.
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140
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Ocampo-Restrepo VK, Calderón-Cárdenas A, Lizcano-Valbuena WH. Catalytic Activity of Pt-Based Nanoparticles with Ni and Co for Ethanol and Acetaldehyde Electrooxidation in Alkaline Medium. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.06.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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141
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Singh RK, Schechter A. Electroactivity of NiCr Catalysts for Urea Oxidation in Alkaline Electrolyte. ChemCatChem 2017. [DOI: 10.1002/cctc.201700451] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Alex Schechter
- Department of Chemical Sciences; Ariel University; Ariel- 40700 Israel
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142
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Wu Z, Zhang M, Jiang H, Zhong CJ, Chen Y, Wang L. Competitive C-C and C-H bond scission in the ethanol oxidation reaction on Cu(100) and the effect of an alkaline environment. Phys Chem Chem Phys 2017; 19:15444-15453. [PMID: 28580983 DOI: 10.1039/c7cp01445g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Direct ethanol fuel cell technology is impeded by inefficient, yet expensive anode catalysts. As such, research on effective and cheap anode catalysts towards complete ethanol oxidation reaction (EOR) is greatly needed. Herein, we report the investigations of the competitive C-C and C-H bond scissions in the EOR involving CH3CO, CH2CO, and CHCO species on Cu(100) using density functional theory and transition state theory calculations. The easiest C-C bond cleavage was found in CH2CO while the most difficult C-H bond cleavage was also found in CH2CO, both with an activation energy of 1.02 eV. The feasible C-C bond scission may take place in CH2CO with a rate constant ratio of the C-C to the C-H bond scission at 100 °C of 0.32. Furthermore, in an alkaline environment, the C-H bond scission activation barrier is considerably lowered but the C-C bond cleavage activation barrier is slightly increased for both CH3CO and CH2CO species. The reaction of CH3CO species on Cu(100) under alkaline conditions produces mainly acetic acid with a barrier of 0.49 eV and a rate constant of 4.93 × 105 s-1 at 100 °C.
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Affiliation(s)
- Zhipeng Wu
- Key Laboratory of Ministry of Education for Green Chemical Technology and the R & D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China.
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143
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Qazzazie D, Yurchenko O, Urban S, Kieninger J, Urban G. Platinum nanowires anchored on graphene-supported platinum nanoparticles as a highly active electrocatalyst towards glucose oxidation for fuel cell applications. NANOSCALE 2017; 9:6436-6447. [PMID: 28463371 DOI: 10.1039/c7nr01391d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The limited performance of platinum-based electrocatalysts for glucose electrooxidation is a major concern for glucose fuel cells, since glucose electrooxidation is characterized by slow reaction kinetics and low diffusion coefficient. Here, the presented graphene-supported platinum-based hierarchical nanostructures attain highly enhanced electrocatalytic activity towards glucose oxidation. Platinum nanoparticles electrodeposited on graphene support retain mechanical stability and act as junctions allowing a reliable, smooth and dense growth of platinum nanowires with extremely small diameters (>10 nm) on graphene. The electrode's surface roughness was increased by factors up to 4000 to the geometrical surface area enabling maximized exploitation of the electrocatalytic activity of platinum and efficient electron transfer between nanowires and the substrate. The unique three-dimensional geometry of these hierarchical nanostructures has a significant impact on their catalytic performance offering short diffusional paths for slow glucose species, thus, mass transport limitations are optimized leading to lower polarization losses. This was examined by galvanostatic measurements of the operation as anodes in glucose half-cells under conditions corresponding to implantable glucose fuel cells. The presented hierarchical nanostructures show remarkably enhanced catalytic performance for glucose electrooxidation, i.e. a negatively shifted open circuit potential of -580 mV vs. Ag/AgCl, hence, representing appropriate electrocatalysts for use as anodes in glucose fuel cells. In combination with a non-metal N-doped graphene cathode, a cell potential of 0.65 V was achieved at a galvanostatic load of 17.5 μA cm-2 which noticeably surpasses the performance of state of the art catalysts for the aforementioned operation conditions.
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Affiliation(s)
- D Qazzazie
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Strasse 21, 79104 Freiburg, Germany.
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144
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Erini N, Beermann V, Gocyla M, Gliech M, Heggen M, Dunin-Borkowski RE, Strasser P. The Effect of Surface Site Ensembles on the Activity and Selectivity of Ethanol Electrooxidation by Octahedral PtNiRh Nanoparticles. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702332] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Nina Erini
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory; Department of Chemistry; Chemical Engineering Division; Technical University Berlin; 10623 Berlin Germany
| | - Vera Beermann
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory; Department of Chemistry; Chemical Engineering Division; Technical University Berlin; 10623 Berlin Germany
| | - Martin Gocyla
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons; Forschungszentrum Juelich GmbH; 52425 Juelich Germany
| | - Manuel Gliech
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory; Department of Chemistry; Chemical Engineering Division; Technical University Berlin; 10623 Berlin Germany
| | - Marc Heggen
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons; Forschungszentrum Juelich GmbH; 52425 Juelich Germany
| | - Rafal E. Dunin-Borkowski
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons; Forschungszentrum Juelich GmbH; 52425 Juelich Germany
| | - Peter Strasser
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory; Department of Chemistry; Chemical Engineering Division; Technical University Berlin; 10623 Berlin Germany
- Ertl Center for Electrochemistry and Catalysis; Gwangju Institute of Science and Technology; Gwangju 500-712 South Korea
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145
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Erini N, Beermann V, Gocyla M, Gliech M, Heggen M, Dunin-Borkowski RE, Strasser P. The Effect of Surface Site Ensembles on the Activity and Selectivity of Ethanol Electrooxidation by Octahedral PtNiRh Nanoparticles. Angew Chem Int Ed Engl 2017; 56:6533-6538. [DOI: 10.1002/anie.201702332] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Nina Erini
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory; Department of Chemistry; Chemical Engineering Division; Technical University Berlin; 10623 Berlin Germany
| | - Vera Beermann
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory; Department of Chemistry; Chemical Engineering Division; Technical University Berlin; 10623 Berlin Germany
| | - Martin Gocyla
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons; Forschungszentrum Juelich GmbH; 52425 Juelich Germany
| | - Manuel Gliech
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory; Department of Chemistry; Chemical Engineering Division; Technical University Berlin; 10623 Berlin Germany
| | - Marc Heggen
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons; Forschungszentrum Juelich GmbH; 52425 Juelich Germany
| | - Rafal E. Dunin-Borkowski
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons; Forschungszentrum Juelich GmbH; 52425 Juelich Germany
| | - Peter Strasser
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory; Department of Chemistry; Chemical Engineering Division; Technical University Berlin; 10623 Berlin Germany
- Ertl Center for Electrochemistry and Catalysis; Gwangju Institute of Science and Technology; Gwangju 500-712 South Korea
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146
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Pérez AE, Ribadeneira R. Use of chemical descriptors approach and DFT to analyze the C C bond cleavage on Pt 3 Re 1 alloy in the ethanol oxidation reaction for fuel cells. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.03.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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147
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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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148
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Wang J, Wang Z, Li S, Wang R, Song Y. Surface and interface engineering of FePt/C nanocatalysts for electro-catalytic methanol oxidation: enhanced activity and durability. NANOSCALE 2017; 9:4066-4075. [PMID: 28106219 DOI: 10.1039/c6nr09122a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A methodology by coupling a microfluidic-batch process with in situ carbon-black mixing, successive annealing and de-alloying post-treatment was developed for engineering surface and interface microstructures of FePt/C nanocomposites. Ultra-small angular FePt nanocrystals rich in vertexes/terraces/steps and with Pt contents gradually increasing from the inner to the outer part can be synthesized at certain Fe/Pt atomic ratios (2/1 or 1.1/1), which can directly grow on carbon-black for enhanced nanocrystal-carbon interface interaction by introducing the in situ carbon-black mixing process. Composition and structure characterization suggests that FePt@(Fe1-xPtx)Oy(OH)z/C nanocomposites with FePt alloy cores and surface Pt-doping hydroxyl iron oxide shells are formed after annealing. After controlled de-alloying of Fe in annealed nanocrystals with a Fe/Pt ratio of 2/1, the finally formed nanocatalysts exhibited excellent electrochemical catalytic performance using the methanol oxidation reaction as a model, preserving an activity of 1610 mA mg-1 Pt-1 (12 times the commercial Pt/C catalysts, higher than the best result (7.9 times the commercial Pt/C catalysts) just published in Science (Science, 2016, 354, 1410-1414), enhanced durability and high tolerance to CO poisoning.
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Affiliation(s)
- Junmei Wang
- Center for Modern Physics Technology and Applied Physics Department, School of Mathematics and Physics, University of Science & Technology Beijing, Beijing 100083, China.
| | - Zhenlei Wang
- School of Physics and Nucleation Engineering, Beihang University, Beijing 100191, China
| | - Shuai Li
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China
| | - Rongming Wang
- Center for Modern Physics Technology and Applied Physics Department, School of Mathematics and Physics, University of Science & Technology Beijing, Beijing 100083, China.
| | - Yujun Song
- Center for Modern Physics Technology and Applied Physics Department, School of Mathematics and Physics, University of Science & Technology Beijing, Beijing 100083, China.
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149
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Wang P, Yin S, Wen Y, Tian Z, Wang N, Key J, Wang S, Shen PK. Ternary Pt 9RhFe x Nanoscale Alloys as Highly Efficient Catalysts with Enhanced Activity and Excellent CO-Poisoning Tolerance for Ethanol Oxidation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:9584-9591. [PMID: 28195459 DOI: 10.1021/acsami.6b14947] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
To address the problems of high cost and poor stability of anode catalysts in direct ethanol fuel cells (DEFCs), ternary nanoparticles Pt9RhFex (x = 1, 3, 5, 7, and 9) supported on carbon powders (XC-72R) have been synthesized via a facile method involving reduction by sodium borohydride followed by thermal annealing in N2 at ambient pressure. The catalysts are physically characterized by X-ray diffraction, scanning transmission electron microscopy, and X-ray photoelectron spectroscopy, and their catalytic performance for the ethanol oxidation reaction (EOR) is evaluated by cyclic and linear scan voltammetry, CO-stripping voltammograms, and chronopotentiometry. All the Pt9RhFex/C catalysts of different atomic ratios produce high EOR catalytic activity. The catalyst of atomic ratio composition 9:1:3 (Pt/Rh/Fe) has the highest activity and excellent CO-poisoning tolerance. Moreover, the enhanced EOR catalytic activity on Pt9RhFe3/C when compared to Pt9Rh/C, Pt3Fe/C, and Pt/C clearly demonstrates the presence of Fe improves catalytic performance. Notably, the onset potential for CO oxidation on Pt9RhFe3/C (0.271 V) is ∼55, 75, and 191 mV more negative than on Pt9Rh/C (0.326 V), Pt3Fe/C (0.346 V), and Pt/C (0.462 V), respectively, which implies the presence of Fe atoms dramatically improves CO-poisoning tolerance. Meanwhile, compared to the commercial PtRu/C catalyst, the peak potential on Pt9RhFe3/C for CO oxidation was just slightly changed after several thousand cycles, which shows high stability against the potential cycling. The possible mechanism by which Fe and Rh atoms facilitate the observed enhanced performance is also considered herein, and we conclude Pt9RhFe3/C offers a promising anode catalyst for direct ethanol fuel cells.
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Affiliation(s)
- Peng Wang
- Guangxi Key Laboratory of Electrochemical Energy Materials, Collaborative Innovation Center of Renewable Energy Materials (CICREM), Guangxi University , Nanning 530004, China
- State Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Guangxi University , Nanning 530004, China
| | - Shibin Yin
- Guangxi Key Laboratory of Electrochemical Energy Materials, Collaborative Innovation Center of Renewable Energy Materials (CICREM), Guangxi University , Nanning 530004, China
| | - Ying Wen
- Guangxi Key Laboratory of Electrochemical Energy Materials, Collaborative Innovation Center of Renewable Energy Materials (CICREM), Guangxi University , Nanning 530004, China
| | - Zhiqun Tian
- Guangxi Key Laboratory of Electrochemical Energy Materials, Collaborative Innovation Center of Renewable Energy Materials (CICREM), Guangxi University , Nanning 530004, China
| | - Ningzhang Wang
- School of Computer, Electronics and Information, Guangxi University , Nanning 530004, China
| | - Julian Key
- Guangxi Key Laboratory of Electrochemical Energy Materials, Collaborative Innovation Center of Renewable Energy Materials (CICREM), Guangxi University , Nanning 530004, China
| | - Shuangbao Wang
- Guangxi Key Laboratory of Electrochemical Energy Materials, Collaborative Innovation Center of Renewable Energy Materials (CICREM), Guangxi University , Nanning 530004, China
| | - Pei Kang Shen
- Guangxi Key Laboratory of Electrochemical Energy Materials, Collaborative Innovation Center of Renewable Energy Materials (CICREM), Guangxi University , Nanning 530004, China
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150
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Cai B, Dianat A, Hübner R, Liu W, Wen D, Benad A, Sonntag L, Gemming T, Cuniberti G, Eychmüller A. Multimetallic Hierarchical Aerogels: Shape Engineering of the Building Blocks for Efficient Electrocatalysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29. [PMID: 28060420 DOI: 10.1002/adma.201605254] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 12/05/2016] [Indexed: 05/03/2023]
Abstract
A new class of multimetallic hierarchical aerogels composed entirely of interconnected Ni-Pdx Pty nano-building-blocks with in situ engineered morphologies and compositions is demonstrated. The underlying mechanism of the galvanic shape-engineering is elucidated in terms of nanowelding of intermediate nanoparticles. The hierarchical aerogels integrate two levels of porous structures, leading to improved electrocatalysis performance.
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Affiliation(s)
- Bin Cai
- Physikalische Chemie, Center for Advancing Electronics Dresden, Technische Universität Dresden, Bergstraße 66b, 01062, Dresden, Germany
| | - Arezoo Dianat
- Institute for Materials Science and Max Bergmann Center of Biomaterials, Center for Advancing Electronics Dresden, Technische Universität Dresden, Hallwachsstraße 3, 01069, Dresden, Germany
| | - René Hübner
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Wei Liu
- Physikalische Chemie, Center for Advancing Electronics Dresden, Technische Universität Dresden, Bergstraße 66b, 01062, Dresden, Germany
| | - Dan Wen
- Physikalische Chemie, Center for Advancing Electronics Dresden, Technische Universität Dresden, Bergstraße 66b, 01062, Dresden, Germany
| | - Albrecht Benad
- Physikalische Chemie, Center for Advancing Electronics Dresden, Technische Universität Dresden, Bergstraße 66b, 01062, Dresden, Germany
| | - Luisa Sonntag
- Physikalische Chemie, Center for Advancing Electronics Dresden, Technische Universität Dresden, Bergstraße 66b, 01062, Dresden, Germany
| | - Thomas Gemming
- Institute for Complex Materials, IFW Dresden, D-01171, Dresden, Germany
| | - Gianaurelio Cuniberti
- Institute for Materials Science and Max Bergmann Center of Biomaterials, Center for Advancing Electronics Dresden, Technische Universität Dresden, Hallwachsstraße 3, 01069, Dresden, Germany
| | - Alexander Eychmüller
- Physikalische Chemie, Center for Advancing Electronics Dresden, Technische Universität Dresden, Bergstraße 66b, 01062, Dresden, Germany
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