101
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Al Salem H, Chitturi VR, Babu G, Santana JA, Gopalakrishnan D, Reddy Arava LM. Stabilizing polysulfide-shuttle in a Li–S battery using transition metal carbide nanostructures. RSC Adv 2016. [DOI: 10.1039/c6ra22434b] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Metal carbides nanostrcutures to stabilize polysulfide shuttle which is a key bottleneck for practical applications of Li–S battery.
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Affiliation(s)
- Hesham Al Salem
- Department of Mechanical Engineering
- Wayne State University
- Detroit
- USA
| | | | - Ganguli Babu
- Department of Mechanical Engineering
- Wayne State University
- Detroit
- USA
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102
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Collett CH, McGregor J. Things go better with coke: the beneficial role of carbonaceous deposits in heterogeneous catalysis. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01236h] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbonaceous deposits on heterogeneous catalysts are traditionally associated with catalyst deactivation. However, they can play a beneficial role in many catalytic processes, e.g. dehydrogenation, hydrogenation, alkylation, isomerisation, Fischer–Tropsch, MTO etc. This review highlights the role and mechanism by which coke deposits can enhance catalytic performance.
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Affiliation(s)
- C. H. Collett
- Department of Chemical and Biological Engineering
- The University of Sheffield
- Sheffield S1 3JD
- UK
| | - J. McGregor
- Department of Chemical and Biological Engineering
- The University of Sheffield
- Sheffield S1 3JD
- UK
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103
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He W, Wang Y, Jiang C, Lu L. Structural effects of a carbon matrix in non-precious metal O2-reduction electrocatalysts. Chem Soc Rev 2016; 45:2396-409. [DOI: 10.1039/c5cs00665a] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The unique geometric and electronic structural effects of a carbon matrix in several typical non-precious metal O2-reduction electrocatalysts are discussed.
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Affiliation(s)
- Wenhui He
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Ying Wang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Chunhuan Jiang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Lehui Lu
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
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104
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Brar LK, Singla G, Pandey OP. The role of carbon in structural evolution during single step synthesis of nano tantalum carbide. RSC Adv 2016. [DOI: 10.1039/c6ra24484j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Carbon-coated nano TaC has been synthesized at 800 °C in single step from TaO2. Structural features of synthesized cubic TaC depend on the initial carbon concentration. The reaction analysis depicts the role of Mg in lowering the reaction temperature.
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Affiliation(s)
- Loveleen K. Brar
- School of Physics and Materials Science
- Thapar University
- Patiala
- India
| | - Gourav Singla
- School of Physics and Materials Science
- Thapar University
- Patiala
- India
| | - O. P. Pandey
- School of Physics and Materials Science
- Thapar University
- Patiala
- India
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105
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Deshmukh R, Tervoort E, Käch J, Rechberger F, Niederberger M. Assembly of ultrasmall Cu3N nanoparticles into three-dimensional porous monolithic aerogels. Dalton Trans 2016; 45:11616-9. [DOI: 10.1039/c6dt01451h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We present the assembly of ultrasmall Cu3N nanoparticles into aerogels with a high surface area and porosity by thermally destabilizing colloidal nanoparticles.
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Affiliation(s)
- Rupali Deshmukh
- Laboratory of Multifunctional Materials
- Department of Materials
- ETH Zurich
- 8093 Zurich
- Switzerland
| | - Elena Tervoort
- Laboratory of Multifunctional Materials
- Department of Materials
- ETH Zurich
- 8093 Zurich
- Switzerland
| | - Julian Käch
- Laboratory of Multifunctional Materials
- Department of Materials
- ETH Zurich
- 8093 Zurich
- Switzerland
| | - Felix Rechberger
- Laboratory of Multifunctional Materials
- Department of Materials
- ETH Zurich
- 8093 Zurich
- Switzerland
| | - Markus Niederberger
- Laboratory of Multifunctional Materials
- Department of Materials
- ETH Zurich
- 8093 Zurich
- Switzerland
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106
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107
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Xia W, Mahmood A, Liang Z, Zou R, Guo S. Earth-Abundant Nanomaterials for Oxygen Reduction. Angew Chem Int Ed Engl 2015; 55:2650-76. [DOI: 10.1002/anie.201504830] [Citation(s) in RCA: 803] [Impact Index Per Article: 89.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Wei Xia
- Materials Science & Engineering; College of Engineering; Peking University; Beijing 100871 P. R. China
| | - Asif Mahmood
- Materials Science & Engineering; College of Engineering; Peking University; Beijing 100871 P. R. China
| | - Zibin Liang
- Materials Science & Engineering; College of Engineering; Peking University; Beijing 100871 P. R. China
| | - Ruqiang Zou
- Materials Science & Engineering; College of Engineering; Peking University; Beijing 100871 P. R. China
| | - Shaojun Guo
- Materials Science & Engineering; College of Engineering; Peking University; Beijing 100871 P. R. China
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108
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Xia W, Mahmood A, Liang Z, Zou R, Guo S. Platinfreie Nanomaterialien für die Sauerstoffreduktion. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504830] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Wei Xia
- Materials Science & Engineering, College of Engineering; Peking University; Peking 100871 VR China
| | - Asif Mahmood
- Materials Science & Engineering, College of Engineering; Peking University; Peking 100871 VR China
| | - Zibin Liang
- Materials Science & Engineering, College of Engineering; Peking University; Peking 100871 VR China
| | - Ruqiang Zou
- Materials Science & Engineering, College of Engineering; Peking University; Peking 100871 VR China
| | - Shaojun Guo
- Materials Science & Engineering, College of Engineering; Peking University; Peking 100871 VR China
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109
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Di Valentin C, Fittipaldi D, Pacchioni G. Methanol Oxidation Reaction on α-Tungsten Carbide Versus Platinum (1 1 1) Surfaces: A DFT Electrochemical Study. ChemCatChem 2015. [DOI: 10.1002/cctc.201500646] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cristiana Di Valentin
- Dipartimento di Scienza dei Materiali; Università di Milano Bicocca; via R. Cozzi 55 20125 Milan Italy
| | - Diego Fittipaldi
- Dipartimento di Scienza dei Materiali; Università di Milano Bicocca; via R. Cozzi 55 20125 Milan Italy
| | - Gianfranco Pacchioni
- Dipartimento di Scienza dei Materiali; Università di Milano Bicocca; via R. Cozzi 55 20125 Milan Italy
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110
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111
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Han S, Youn DH, Lee MH, Lee JS. Tungsten Carbide and CNT-Graphene-Supported Pd Electrocatalyst toward Electrooxidation of Hydrogen. ChemCatChem 2015. [DOI: 10.1002/cctc.201500154] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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112
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113
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114
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Huang T, Mao S, Zhou G, Zhang Z, Wen Z, Huang X, Ci S, Chen J. A high-performance catalyst support for methanol oxidation with graphene and vanadium carbonitride. NANOSCALE 2015; 7:1301-1307. [PMID: 25500628 DOI: 10.1039/c4nr05244g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, a graphene-vanadium carbonitride (G-V(C, N)) hybrid is reported as a novel support for the Pt catalyst in methanol oxidation. The catalytic activity of the Pt/G-V(C, N) hybrid for methanol oxidation is greatly enhanced compared with that of a commercial Pt/C catalyst with carbon black as the catalyst support. The outstanding catalytic activity of the Pt/G-V(C, N) catalyst suggests the potential of using graphene-metal carbonitride as the catalyst support in fuel cells.
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Affiliation(s)
- Taizhong Huang
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
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115
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Nie Y, Li L, Wei Z. Recent advancements in Pt and Pt-free catalysts for oxygen reduction reaction. Chem Soc Rev 2015; 44:2168-201. [DOI: 10.1039/c4cs00484a] [Citation(s) in RCA: 1606] [Impact Index Per Article: 178.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Based on the understanding of the ORR catalytic mechanism, advanced Pt-based and Pt-free catalysts have been explored.
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Affiliation(s)
- Yao Nie
- The State Key Laboratory of Power Transmission Equipment & System Security and New Technology
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- China
| | - Li Li
- The State Key Laboratory of Power Transmission Equipment & System Security and New Technology
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- China
| | - Zidong Wei
- The State Key Laboratory of Power Transmission Equipment & System Security and New Technology
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- China
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116
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Brar LK, Singla G, Pandey OP. Evolution of structural and thermal properties of carbon-coated TaC nanopowder synthesized by single step reduction of Ta-ethoxide. RSC Adv 2015. [DOI: 10.1039/c4ra12105h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Carbon-coated nano-TaC has been synthesized at 800 °C using tantalum-ethoxide by single step chemical reaction route and no external carbon source
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Affiliation(s)
- Loveleen K. Brar
- School of Physics and Materials Science
- Thapar University
- Patiala
- India
| | - Gourav Singla
- School of Physics and Materials Science
- Thapar University
- Patiala
- India
| | - O. P. Pandey
- School of Physics and Materials Science
- Thapar University
- Patiala
- India
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117
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Abstract
This review summarizes the recent research efforts toward noble metal-free hydrogen evolution electrocatalysts.
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Affiliation(s)
- Xiaoxin Zou
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Yu Zhang
- Key laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education
- Beijing Key Laboratory of Bio-inspired Energy Materials and Devices
- School of Chemistry and Environment
- BeiHang University
- Beijing
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118
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Kwon S, Ham DJ, Lee SG. Enhanced H2 dissociative phenomena of Pt–Ir electrocatalysts for PEMFCs: an integrated experimental and theoretical study. RSC Adv 2015. [DOI: 10.1039/c5ra07228j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Bimetallic Pt–Ir electrocatalysts enhance the H2 dissociation for PEMFCs.
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Affiliation(s)
- Soonchul Kwon
- School of Civil and Environmental Engineering
- Georgia Institute of Technology
- Atlanta
- USA
| | - Dong Jin Ham
- Department of Chemical Engineering
- Pohang University of Science of Technology
- Pohang
- Republic of Korea
| | - Seung Geol Lee
- Department of Organic Material Science and Engineering
- Pusan National University
- Busan 609-735
- Republic of Korea
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119
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Adams BD, Black R, Radtke C, Williams Z, Mehdi BL, Browning ND, Nazar LF. The importance of nanometric passivating films on cathodes for Li-air batteries. ACS NANO 2014; 8:12483-93. [PMID: 25364863 DOI: 10.1021/nn505337p] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Recently, there has been a transition from fully carbonaceous positive electrodes for the aprotic lithium oxygen battery to alternative materials and the use of redox mediator additives, in an attempt to lower the large electrochemical overpotentials associated with the charge reaction. However, the stabilizing or catalytic effect of these materials can become complicated due to the presence of major side-reactions observed during dis(charge). Here, we isolate the charge reaction from the discharge by utilizing electrodes prefilled with commercial lithium peroxide with a crystallite size of about 200-800 nm. Using a combination of S/TEM, online mass spectrometry, XPS, and electrochemical methods to probe the nature of surface films on carbon and conductive Ti-based nanoparticles, we show that oxygen evolution from lithium peroxide is strongly dependent on their surface properties. Insulating TiO2 surface layers on TiC and TiN - even as thin as 3 nm-can completely inhibit the charge reaction under these conditions. On the other hand, TiC, which lacks this oxide film, readily facilitates oxidation of the bulk Li2O2 crystallites, at a much lower overpotential relative to carbon. Since oxidation of lithium oxygen battery cathodes is inevitable in these systems, precise control of the surface chemistry at the nanoscale becomes of upmost importance.
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Affiliation(s)
- Brian D Adams
- Department of Chemistry and the Waterloo Institute for Nanotechnology, University of Waterloo , 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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120
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Zheng W, Chen L, Ma C. Density functional study of H2O adsorption and dissociation on WC(0001). COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2014.04.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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121
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Youn DH, Han S, Kim JY, Kim JY, Park H, Choi SH, Lee JS. Highly active and stable hydrogen evolution electrocatalysts based on molybdenum compounds on carbon nanotube-graphene hybrid support. ACS NANO 2014; 8:5164-5173. [PMID: 24787540 DOI: 10.1021/nn5012144] [Citation(s) in RCA: 249] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Highly active and stable electrocatalysts for hydrogen evolution have been developed on the basis of molybdenum compounds (Mo2C, Mo2N, and MoS2) on carbon nanotube (CNT)-graphene hybrid support via a modified urea-glass route. By a simple modification of synthetic variables, the final phases are easily controlled from carbide, nitride to sulfide with homogeneous dispersion of nanocrystals on the CNT-graphene support. Among the prepared catalysts, Mo2C/CNT-graphene shows the highest activity for hydrogen evolution reaction with a small onset overpotential of 62 mV and Tafel slope of 58 mV/dec as well as an excellent stability in acid media. Such enhanced catalytic activity may originate from its low hydrogen binding energy and high conductivity. Moreover, the CNT-graphene hybrid support plays crucial roles to enhance the activity of molybdenum compounds by alleviating aggregation of the nanocrystals, providing a large area to contact with electrolyte, and facilitating the electron transfer.
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Affiliation(s)
- Duck Hyun Youn
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 689-798, Korea
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122
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Kimmel YC, Xu X, Yu W, Yang X, Chen JG. Trends in Electrochemical Stability of Transition Metal Carbides and Their Potential Use As Supports for Low-Cost Electrocatalysts. ACS Catal 2014. [DOI: 10.1021/cs500182h] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yannick C. Kimmel
- Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Xiaoge Xu
- Department
of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Weiting Yu
- Department
of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Xiaodong Yang
- State
Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, People’s Republic of China
| | - Jingguang G. Chen
- Department
of Chemical Engineering, Columbia University, New York, New York 10027, United States
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123
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von Metzen RP, Stieglitz T. The effects of annealing on mechanical, chemical, and physical properties and structural stability of Parylene C. Biomed Microdevices 2014; 15:727-35. [PMID: 23494595 DOI: 10.1007/s10544-013-9758-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Parylene C is one of the established encapsulation polymers for chronic implants. We investigated the influence of annealing Parylene C on its mechanical properties, chemical structure, and on the stability of Parylene C - platinum - Parylene C sandwich structures as a model of flexible neural interfaces in 0.9 % saline solution. Films of Parylene C were annealed at 200 °C, 300 °C, 350 °C, and 400 °C in nitrogen atmosphere. Temperatures of 350 °C and higher as well as annealing in air destroyed the Parylene C layers; films annealed at lower temperatures showed identical infrared spectra. Higher anneal temperatures produced increased values of elongation at break, tensile and yield strength, and yield strain while at the same time Young's modulus was shown to decrease. Crystallinity increased with annealing temperature. The structural stability of sandwich structures benefitted remarkably from annealing. Sandwich structures annealed at 300 °C maintained their structural integrity during 320 days in saline solution at 37 °C and the insulation capability stayed consistently high.
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Affiliation(s)
- Rene Patrick von Metzen
- Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering IMTEK, University of Freiburg, Georges-Koehler-Allee 102, 79110, Freiburg, Germany.
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124
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Michalsky R, Zhang YJ, Peterson AA. Trends in the Hydrogen Evolution Activity of Metal Carbide Catalysts. ACS Catal 2014. [DOI: 10.1021/cs500056u] [Citation(s) in RCA: 295] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ronald Michalsky
- School of Engineering and ‡Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Yin-Jia Zhang
- School of Engineering and ‡Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Andrew A. Peterson
- School of Engineering and ‡Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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125
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Duan T, Chen Y, Wen Q, Duan Y. Enhanced electrocatalytic activity of nano-TiN composited Ti/Sb–SnO2 electrode fabricated by pulse electrodeposition for methylene blue decolorization. RSC Adv 2014. [DOI: 10.1039/c4ra09145k] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The Sb-doped SnO2 electrode is modified by TiN nanoparticles and has higher stability and significantly enhanced electrochemical decolorization activity.
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Affiliation(s)
- Tigang Duan
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
- College of Material Science and Chemical Engineering
- Harbin Engineering University
- Harbin, China
| | - Ye Chen
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
- College of Material Science and Chemical Engineering
- Harbin Engineering University
- Harbin, China
| | - Qing Wen
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
- College of Material Science and Chemical Engineering
- Harbin Engineering University
- Harbin, China
| | - Ying Duan
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education
- College of Material Science and Chemical Engineering
- Harbin Engineering University
- Harbin, China
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126
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Zhang X, Yu S, Zheng W, Liu P. Stability of Pt near surface alloys under electrochemical conditions: a model study. Phys Chem Chem Phys 2014; 16:16615-22. [DOI: 10.1039/c4cp01942c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The stability is one of the key requirements for commercializing the fuel cell electrocatalysts in automotive applications.
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Affiliation(s)
- Xiaoming Zhang
- Department of Materials Science
- Key Laboratory of Mobile Materials
- MOE, and State Key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012, P. R. China
| | - Shansheng Yu
- Department of Materials Science
- Key Laboratory of Mobile Materials
- MOE, and State Key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012, P. R. China
| | - Weitao Zheng
- Department of Materials Science
- Key Laboratory of Mobile Materials
- MOE, and State Key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012, P. R. China
| | - Ping Liu
- Center for Functional Nanomaterials
- Brookhaven National Laboratory
- , USA
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127
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Cao B, Veith GM, Neuefeind JC, Adzic RR, Khalifah PG. Mixed close-packed cobalt molybdenum nitrides as non-noble metal electrocatalysts for the hydrogen evolution reaction. J Am Chem Soc 2013; 135:19186-92. [PMID: 24175858 DOI: 10.1021/ja4081056] [Citation(s) in RCA: 416] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A two-step solid-state reaction for preparing cobalt molybdenum nitride with a nanoscale morphology has been used to produce a highly active and stable electrocatalyst for the hydrogen evolution reaction (HER) under acidic conditions that achieves an iR-corrected current density of 10 mA cm(-2) at -0.20 V vs RHE at low catalyst loadings of 0.24 mg/cm(2) in rotating disk experiments under a H2 atmosphere. Neutron powder diffraction and pair distribution function (PDF) studies have been used to overcome the insensitivity of X-ray diffraction data to different transition-metal nitride structural polytypes and show that this cobalt molybdenum nitride crystallizes in space group P63/mmc with lattice parameters of a = 2.85176(2) Å and c = 10.9862(3) Å and a formula of Co0.6Mo1.4N2. This space group results from the four-layered stacking sequence of a mixed close-packed structure with alternating layers of transition metals in octahedral and trigonal prismatic coordination and is a structure type for which HER activity has not previously been reported. Based on the accurate bond distances obtained from time-of-flight neutron diffraction data, it is determined that the octahedral sites contain a mixture of divalent Co and trivalent Mo, while the trigonal prismatic sites contain Mo in a higher oxidation state. X-ray photoelectron spectroscopy (XPS) studies confirm that at the sample surface nitrogen is present and N-H moieties are abundant.
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Affiliation(s)
- Bingfei Cao
- Chemistry Department, Stony Brook University , Stony Brook, New York 11794, United States
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128
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Kumar R, Pasupathi S, Pollet BG, Scott K. Nafion-stabilised platinum nanoparticles supported on titanium nitride: An efficient and durable electrocatalyst for phosphoric acid based polymer electrolyte fuel cells. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.07.140] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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129
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Cao B, Veith GM, Diaz RE, Liu J, Stach EA, Adzic RR, Khalifah PG. Cobalt Molybdenum Oxynitrides: Synthesis, Structural Characterization, and Catalytic Activity for the Oxygen Reduction Reaction. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303197] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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130
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Cao B, Veith GM, Diaz RE, Liu J, Stach EA, Adzic RR, Khalifah PG. Cobalt Molybdenum Oxynitrides: Synthesis, Structural Characterization, and Catalytic Activity for the Oxygen Reduction Reaction. Angew Chem Int Ed Engl 2013; 52:10753-7. [DOI: 10.1002/anie.201303197] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 06/05/2013] [Indexed: 11/07/2022]
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131
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132
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133
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Abstract
Catalytic aminohalogenation methods enable the regio- and stereoselective vicinal difunctionalization of alkynes, allenes and alkenes with amine and halogen moieties. A range of protocols and reaction mechanisms including organometallic, Lewis base, Lewis acid and Brønsted acid catalysis have been disclosed, enabling the regio- and stereoselective synthesis of halogen-functionalized acyclic amines and nitrogen heterocycles. Recent advances including aminofluorination and catalytic enantioselective aminohalogenation reactions are summarized in this review.
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Affiliation(s)
- Sherry R. Chemler
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, New York, USA
| | - Michael T. Bovino
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, New York, USA
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134
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Youn DH, Seol M, Kim JY, Jang JW, Choi Y, Yong K, Lee JS. TiN nanoparticles on CNT-graphene hybrid support as noble-metal-free counter electrode for quantum-dot-sensitized solar cells. CHEMSUSCHEM 2013; 6:261-267. [PMID: 23303691 DOI: 10.1002/cssc.201200775] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Indexed: 06/01/2023]
Abstract
The development of an efficient noble-metal-free counter electrode is crucial for possible applications of quantum-dot-sensitized solar cells (QDSSCs). Herein, we present TiN nanoparticles on a carbon nanotube (CNT)-graphene hybrid support as a noble-metal-free counter electrode for QDSSCs employing a polysulfide electrolyte. The resulting TiN/CNT-graphene possesses an extremely high surface roughness, a good metal-support interaction, and less aggregation relative to unsupported TiN; it also has superior solar power conversion efficiency (4.13 %) when applying a metal mask, which is much higher than that of the state-of-the-art Au electrode (3.35 %). Based on electrochemical impedance spectroscopy measurements, the enhancement is ascribed to a synergistic effect between TiN nanoparticles and the CNT-graphene hybrid, the roles of which are to provide active sites for the reduction of polysulfide ions and electron pathways to TiN nanoparticles, respectively. The combination of graphene and CNTs leads to a favorable morphology that prevents stacking of graphene or bundling of CNTs, which maximizes the contact of the support with TiN nanoparticles and improves electron-transfer capability relative to either carbon material alone.
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Affiliation(s)
- Duck Hyun Youn
- Department of Chemical Engineering, Division of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Korea
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135
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Zhang RQ, Kim CE, Yu BD, Stampfl C, Soon A. Mitigation of CO poisoning on functionalized Pt–TiN surfaces. Phys Chem Chem Phys 2013; 15:19450-6. [DOI: 10.1039/c3cp53334d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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136
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Yin S, Yang L, Luo L, Huang F, Qiang Y, Zhang H, Yan Z. Fabrication and performance investigation of nanocrystal tungsten nitride supported Pt catalysts for methanol electrooxidation. NEW J CHEM 2013. [DOI: 10.1039/c3nj00717k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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137
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Scanlon MD, Bian X, Vrubel H, Amstutz V, Schenk K, Hu X, Liu B, Girault HH. Low-cost industrially available molybdenum boride and carbide as “platinum-like” catalysts for the hydrogen evolution reaction in biphasic liquid systems. Phys Chem Chem Phys 2013; 15:2847-57. [DOI: 10.1039/c2cp44522k] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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138
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Didziulis SV, Butcher KD. A perspective on the properties and surface reactivities of carbides and nitrides of titanium and vanadium. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2012.04.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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139
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Chen WF, Muckerman JT, Fujita E. Recent developments in transition metal carbides and nitrides as hydrogen evolution electrocatalysts. Chem Commun (Camb) 2013; 49:8896-909. [DOI: 10.1039/c3cc44076a] [Citation(s) in RCA: 921] [Impact Index Per Article: 83.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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140
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Politi JRDS, Viñes F, Rodriguez JA, Illas F. Atomic and electronic structure of molybdenum carbide phases: bulk and low Miller-index surfaces. Phys Chem Chem Phys 2013; 15:12617-25. [DOI: 10.1039/c3cp51389k] [Citation(s) in RCA: 165] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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141
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High Electrochemical Performance and Stability of Co-Deposited Pd–Au on Phase-Pure Tungsten Carbide for Hydrogen Oxidation. Top Catal 2012. [DOI: 10.1007/s11244-012-9875-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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142
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Rabis A, Rodriguez P, Schmidt TJ. Electrocatalysis for Polymer Electrolyte Fuel Cells: Recent Achievements and Future Challenges. ACS Catal 2012. [DOI: 10.1021/cs3000864] [Citation(s) in RCA: 666] [Impact Index Per Article: 55.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Annett Rabis
- Electrochemistry Laboratory,
General Energy Research Department, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
| | - Paramaconi Rodriguez
- Electrochemistry Laboratory,
General Energy Research Department, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
| | - Thomas J. Schmidt
- Electrochemistry Laboratory,
General Energy Research Department, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
- Laboratory of Physical Chemistry,
Electrochemistry Group, ETH Zürich, CH-8093 Zürich, Switzerland
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143
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Yang X, Kimmel YC, Fu J, Koel BE, Chen JG. Activation of Tungsten Carbide Catalysts by Use of an Oxygen Plasma Pretreatment. ACS Catal 2012. [DOI: 10.1021/cs300081t] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaofang Yang
- Department of Chemical and Biological
Engineering, Princeton University, Princeton,
New Jersey 08544, United States
- Catalysis Center for Energy
Innovation, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Yannick C. Kimmel
- Catalysis Center for Energy
Innovation, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Jie Fu
- Department of Chemical and Biological
Engineering, Princeton University, Princeton,
New Jersey 08544, United States
| | - Bruce E. Koel
- Department of Chemical and Biological
Engineering, Princeton University, Princeton,
New Jersey 08544, United States
| | - Jingguang G. Chen
- Catalysis Center for Energy
Innovation, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716, United States
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144
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Zhang RQ, Lee TH, Yu BD, Stampfl C, Soon A. The role of titanium nitride supports for single-atom platinum-based catalysts in fuel cell technology. Phys Chem Chem Phys 2012; 14:16552-7. [DOI: 10.1039/c2cp41392b] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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145
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Gao Q, Giordano C, Antonietti M. Controlled synthesis of tantalum oxynitride and nitride nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:3334-3340. [PMID: 22009942 DOI: 10.1002/smll.201101207] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 07/28/2011] [Indexed: 05/31/2023]
Abstract
Synthesis of monodisperse metal nitride and oxynitride nanoparticles with a controllable chemical composition, size, and a well-defined morphology are useful for applications in fields of catalysis, optoelectronics, and electrochemistry. In this paper a novel method for the controllable synthesis of highly crystalline tantalum oxynitride and nitride nanoparticles with a relatively low polydispersity is presented using urea as the nitrogen source. In the presence of calcium ions as assisting agents, by simply varying the initial urea/Ta molar ratio, both the composition and size of the final product can be tailored to switch from TaON to Ta3 N5. The mechanism proposed is that Ca2+ slows down the release of NH3 from the decomposition of urea, which is indispensable for the controllable synthesis of oxynitride and nitride based nanoparticles.
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Affiliation(s)
- Qingsheng Gao
- Max-Planck-Institute of Colloids and Interfaces, Colloid Chemistry, Research Campus Golm, Am Mühlenberg, D-14476 Potsdam, Germany
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146
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Ghasemi S, Abbasi MH, Saidi A, Kim JY, Lee JS. Sulfur-Emission-Free Process of Molybdenum Carbide Synthesis by Lime-Enhanced Molybdenum Disulfide Reduction with Methane. Ind Eng Chem Res 2011. [DOI: 10.1021/ie201860h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Samad Ghasemi
- Department of Materials Engineering, Hamedan University of Technology, Hamedan 65169-13418, Iran
| | - Mohammad Hasan Abbasi
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Ali Saidi
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Jae Yul Kim
- Department of Chemical Engineering and Division of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, South Korea
| | - Jae Sung Lee
- Department of Chemical Engineering and Division of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, South Korea
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147
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Li Z, Zhang J, Meng D, Yu Y. Electronic structure and bonding characters of the two lowest states of copper, silver, and gold monocarbides. COMPUT THEOR CHEM 2011. [DOI: 10.1016/j.comptc.2011.02.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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148
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Liu Y, Mustain WE. Structural and Electrochemical Studies of Pt Clusters Supported on High-Surface-Area Tungsten Carbide for Oxygen Reduction. ACS Catal 2011. [DOI: 10.1021/cs100140s] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ying Liu
- Department of Chemical, Materials and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - William E. Mustain
- Department of Chemical, Materials and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
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149
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Ham DJ, Pak C, Bae GH, Han S, Kwon K, Jin SA, Chang H, Choi SH, Lee JS. Palladium–nickel alloys loaded on tungsten carbide as platinum-free anode electrocatalysts for polymer electrolyte membrane fuel cells. Chem Commun (Camb) 2011; 47:5792-4. [DOI: 10.1039/c0cc03736b] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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150
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Electrochemical oxidation behavior of titanium nitride based electrocatalysts under PEM fuel cell conditions. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.08.035] [Citation(s) in RCA: 243] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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