1
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Pt3Mn alloy nanostructure with high-index facets by Sn doping modified for highly catalytic active electro-oxidation reactions. J Catal 2021. [DOI: 10.1016/j.jcat.2020.12.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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2
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Spasojević M, Spasojević M, Marković D, Ribić-Zelenović L. Electrooxidation of 2-propanol on the mixture of nanoparticles of Pt and RuO 2 supported on Ti. Z PHYS CHEM 2021. [DOI: 10.1515/zpch-2020-1794] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A thermal process was employed to prepare a catalyst consisting of a mixture of metallic-Pt and rutile RuO2 nanocrystals. This catalyst was used for the electrooxidation of 2-propanol in an alkaline solution. The effect of the catalyst composition on its microstructure, surface properties and catalytic activity was examined. With increasing the RuO2 content, the catalytic activity increases, reaches its maximum and then decreases. The catalytic effect is a result of the bifunctional mechanism of the mixture of Pt and RuO2 nanocrystals. The RuOHad particles are formed on Ru atoms of the RuO2 nanocrystals at potentials more negative than on Pt atoms. These oxy-species facilitate the dehydrogenation, breaking of C–C bonds and oxidation of both 2-propanol and its intermediates, adsorbed on assemblies of adjacent Pt atoms.
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Affiliation(s)
- Miroslav Spasojević
- Joint Laboratory for Advanced Materials of Serbian Academy of Science and Arts, Section for Amorphous Systems, Faculty of Technical Sciences Čačak , University of Kragujevac , 32 000 Čačak , Serbia
| | - Milica Spasojević
- Innovation Center of Faculty of Chemistry , University of Belgrade , Studentski trg 12-16, 11000 Belgrade , Serbia
| | - Dušan Marković
- Joint Laboratory for Advanced Materials of Serbian Academy of Science and Arts, Section for Amorphous Systems, Faculty of Technical Sciences Čačak , University of Kragujevac , 32 000 Čačak , Serbia
| | - Lenka Ribić-Zelenović
- Joint Laboratory for Advanced Materials of Serbian Academy of Science and Arts, Section for Amorphous Systems, Faculty of Technical Sciences Čačak , University of Kragujevac , 32 000 Čačak , Serbia
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3
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In situ X-ray absorption spectroscopy of Sn species adsorbed on platinized platinum electrode in perchloric acid solution containing stannous ions. J Solid State Electrochem 2019. [DOI: 10.1007/s10008-019-04326-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Petrii OA. The Progress in Understanding the Mechanisms of Methanol and Formic Acid Electrooxidation on Platinum Group Metals (a Review). RUSS J ELECTROCHEM+ 2019. [DOI: 10.1134/s1023193519010129] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Siwal S, Devi N, Perla VK, Ghosh SK, Mallick K. Promotional role of gold in electrochemical methanol oxidation. ACTA ACUST UNITED AC 2019. [DOI: 10.1080/2055074x.2019.1595872] [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]
Affiliation(s)
- Samarjeet Siwal
- Department of Chemistry, University of Johannesburg, Auckland Park, South Africa
| | - Nishu Devi
- Department of Chemistry, University of Johannesburg, Auckland Park, South Africa
| | - Venkata K. Perla
- Department of Chemistry, University of Johannesburg, Auckland Park, South Africa
| | - Sarit K. Ghosh
- Department of Chemistry, University of Johannesburg, Auckland Park, South Africa
| | - Kaushik Mallick
- Department of Chemistry, University of Johannesburg, Auckland Park, South Africa
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6
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Xiao H, Zhang J, Zhao M, Hu T, Jia J, Wu H. Hydrogenated graphene as support of Pd nanoparticles with improved electrocatalytic activity for ethanol oxidation reaction in alkaline media. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.12.058] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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7
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Gwebu SS, Nomngongo PN, Maxakato NW. Pt-Sn Nanoparticles Supported on Carbon Nanodots as Anode Catalysts for Alcohol Electro-oxidation in Acidic Conditions. ELECTROANAL 2018. [DOI: 10.1002/elan.201800098] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sandile Surprise Gwebu
- Department of Applied Chemistry; University of Johannesburg, P.O. Box 17011; Doornfontein 2028 South Africa
| | - Philiswa Nosizo Nomngongo
- Department of Applied Chemistry; University of Johannesburg, P.O. Box 17011; Doornfontein 2028 South Africa
| | - Nobanathi Wendy Maxakato
- Department of Applied Chemistry; University of Johannesburg, P.O. Box 17011; Doornfontein 2028 South Africa
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8
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Damte JY, Lyu SL, Leggesse EG, Jiang JC. Methanol decomposition reactions over a boron-doped graphene supported Ru–Pt catalyst. Phys Chem Chem Phys 2018; 20:9355-9363. [DOI: 10.1039/c7cp07618e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In-depth investigations of adsorption and decomposition of methanol over boron-doped graphene supported Ru–Pt catalyst are presented using periodic density functional theory calculations. Methanol decomposition on such catalyst proceeds through formation of methoxide (CH3O) and via stepwise dehydrogenation of formaldehyde (CH2O), formyl (CHO), and carbon monoxide (CO).
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Affiliation(s)
- Jemal Yimer Damte
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Taiwan
| | - Shang-lin Lyu
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Taiwan
| | - Ermias Girma Leggesse
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Taiwan
| | - Jyh Chiang Jiang
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Taiwan
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9
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Luo L, Zhang L, Duan Z, Lapp AS, Henkelman G, Crooks RM. Efficient CO Oxidation Using Dendrimer-Encapsulated Pt Nanoparticles Activated with <2% Cu Surface Atoms. ACS NANO 2016; 10:8760-8769. [PMID: 27585091 DOI: 10.1021/acsnano.6b04448] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this paper, we show that the onset potential for CO oxidation electrocatalyzed by ∼2 nm dendrimer-encapsulated Pt nanoparticles (Pt DENs) is shifted negative by ∼300 mV in the presence of a small percentage (<2%) of Cu surface atoms. Theory and experiments suggest that the catalytic enhancement arises from a cocatalytic Langmuir-Hinshelwood mechanism in which the small number of Cu atoms selectively adsorb OH, thereby facilitating reaction with CO adsorbed to the dominant Pt surface. Theory suggests that these Cu atoms are present primarily on the (100) facets of the Pt DENs.
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Affiliation(s)
- Long Luo
- Department of Chemistry, ‡Institute for Computational and Engineering Sciences, and §Texas Materials Institute, The University of Texas at Austin , 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
| | - Liang Zhang
- Department of Chemistry, ‡Institute for Computational and Engineering Sciences, 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, ‡Institute for Computational and Engineering Sciences, and §Texas Materials Institute, The University of Texas at Austin , 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
| | - Aliya S Lapp
- Department of Chemistry, ‡Institute for Computational and Engineering Sciences, 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, ‡Institute for Computational and Engineering Sciences, 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, ‡Institute for Computational and Engineering Sciences, 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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10
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Puthiyapura VK, Brett DJL, Russell AE, Lin WF, Hardacre C. Biobutanol as Fuel for Direct Alcohol Fuel Cells-Investigation of Sn-Modified Pt Catalyst for Butanol Electro-oxidation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:12859-70. [PMID: 27140480 DOI: 10.1021/acsami.6b02863] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Direct alcohol fuel cells (DAFCs) mostly use low molecular weight alcohols such as methanol and ethanol as fuels. However, short-chain alcohol molecules have a relative high membrane crossover rate in DAFCs and a low energy density. Long chain alcohols such as butanol have a higher energy density, as well as a lower membrane crossover rate compared to methanol and ethanol. Although a significant number of studies have been dedicated to low molecular weight alcohols in DAFCs, very few studies are available for longer chain alcohols such as butanol. A significant development in the production of biobutanol and its proposed application as an alternative fuel to gasoline in the past decade makes butanol an interesting candidate fuel for fuel cells. Different butanol isomers were compared in this study on various Pt and PtSn bimetallic catalysts for their electro-oxidation activities in acidic media. Clear distinctive behaviors were observed for each of the different butanol isomers using cyclic voltammetry (CV), indicating a difference in activity and the mechanism of oxidation. The voltammograms of both n-butanol and iso-butanol showed similar characteristic features, indicating a similar reaction mechanism, whereas 2-butanol showed completely different features; for example, it did not show any indication of poisoning. Ter-butanol was found to be inactive for oxidation on Pt. In situ FTIR and CV analysis showed that OHads was essential for the oxidation of primary butanol isomers which only forms at high potentials on Pt. In order to enhance the water oxidation and produce OHads at lower potentials, Pt was modified by the oxophilic metal Sn and the bimetallic PtSn was studied for the oxidation of butanol isomers. A significant enhancement in the oxidation of the 1° butanol isomers was observed on addition of Sn to the Pt, resulting in an oxidation peak at a potential ∼520 mV lower than that found on pure Pt. The higher activity of PtSn was attributed to the bifunctional mechanism on PtSn catalyst. The positive influence of Sn was also confirmed in the PtSn nanoparticle catalyst prepared by the modification of commercial Pt/C nanoparticle and a higher activity was observed for PtSn (3:1) composition. The temperature-dependent data showed that the activation energy for butanol oxidation reaction over PtSn/C is lower than that over Pt/C.
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Affiliation(s)
- Vinod Kumar Puthiyapura
- Centre for the Theory and Application of Catalysis (CenTACat), School of Chemistry and Chemical Engineering, Queen's University of Belfast (QUB) , Belfast, BT9 5AG, U.K
- School of Chemical Engineering and Analytical Science, The University of Manchester , The Mill, Manchester, M13 9PL, U.K
| | - Dan J L Brett
- Department of Chemical Engineering, University College London (UCL) , London WC1E 7JE, U.K
| | - Andrea E Russell
- Department of Chemistry, University of Southampton , High Field, Southampton, SO17 1BJ, U.K
| | - Wen-Feng Lin
- Centre for the Theory and Application of Catalysis (CenTACat), School of Chemistry and Chemical Engineering, Queen's University of Belfast (QUB) , Belfast, BT9 5AG, U.K
- Department of Chemical Engineering, Loughborough University , Loughborough, Leicestershire, LE11 3TU, U.K
| | - Christopher Hardacre
- Centre for the Theory and Application of Catalysis (CenTACat), School of Chemistry and Chemical Engineering, Queen's University of Belfast (QUB) , Belfast, BT9 5AG, U.K
- School of Chemical Engineering and Analytical Science, The University of Manchester , The Mill, Manchester, M13 9PL, U.K
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11
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Busó-Rogero C, Solla-Gullón J, Vidal-Iglesias FJ, Herrero E, Feliu JM. Adatom modified shape-controlled platinum nanoparticles towards ethanol oxidation. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.02.171] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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13
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First principles study of (Cd, Hg, In, Tl, Sn, Pb, As, Sb, Bi, Se) modified Pt(111), Pt(100) and Pt(211) electrodes as CO oxidation catalysts. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Kakati N, Maiti J, Lee SH, Jee SH, Viswanathan B, Yoon YS. Anode catalysts for direct methanol fuel cells in acidic media: do we have any alternative for Pt or Pt-Ru? Chem Rev 2015; 114:12397-429. [PMID: 25537109 DOI: 10.1021/cr400389f] [Citation(s) in RCA: 288] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Nitul Kakati
- Department of Chemical Engineering, Gachon University , 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 461-701, Republic of Korea
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15
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Zhao Y, Wang R, Han Z, Li C, Wang Y, Chi B, Li J, Wang X. Electrooxidation of methanol and ethanol in acidic medium using a platinum electrode modified with lanthanum-doped tantalum oxide film. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.11.049] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Puthiyapura VK, Brett DJL, Russell AE, Lin WF, Hardacre C. Development of a PtSn bimetallic catalyst for direct fuel cells using bio-butanol fuel. Chem Commun (Camb) 2015. [DOI: 10.1039/c5cc04188k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PtSn showed a higher activity and lower activation energy towards butanol electrooxidation compared to pure Pt.
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Affiliation(s)
- V. K. Puthiyapura
- Centre for the Theory and Application of catalysis (CenTACat)
- School of Chemistry and Chemical Engineering
- Queens University of Belfast
- Belfast-BT95AG
- UK
| | - D. J. L. Brett
- Electrochemical Innovation Lab
- Department of Chemical Engineering
- University College London
- London WC1E 7JE
- UK
| | - A. E. Russell
- Department of Chemistry
- University of Southampton
- Southampton-SO17 1BJ
- UK
| | - W. F. Lin
- Centre for the Theory and Application of catalysis (CenTACat)
- School of Chemistry and Chemical Engineering
- Queens University of Belfast
- Belfast-BT95AG
- UK
| | - C. Hardacre
- Centre for the Theory and Application of catalysis (CenTACat)
- School of Chemistry and Chemical Engineering
- Queens University of Belfast
- Belfast-BT95AG
- UK
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17
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Şen F, Gökağaç G. Pt nanoparticles synthesized with new surfactants: improvement in C1–C3 alcohol oxidation catalytic activity. J APPL ELECTROCHEM 2013. [DOI: 10.1007/s10800-013-0631-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Li S, Dong Z, Yang H, Guo S, Gou G, Ren R, Zhu Z, Jin J, Ma J. Microenvironment Effects in Electrocatalysis: Ionic-Liquid-Like Coating on Carbon Nanotubes Enhances the Pd-Electrocatalytic Alcohol Oxidation. Chemistry 2013; 19:2384-91. [DOI: 10.1002/chem.201203686] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Indexed: 11/11/2022]
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19
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Preparation of High Porous Ni-YSZ Cermets Electrodes and Their Application for Methanol Oxidation. Electrocatalysis (N Y) 2012. [DOI: 10.1007/s12678-012-0121-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Liu HX, Tian N, Brandon MP, Zhou ZY, Lin JL, Hardacre C, Lin WF, Sun SG. Tetrahexahedral Pt Nanocrystal Catalysts Decorated with Ru Adatoms and Their Enhanced Activity in Methanol Electrooxidation. ACS Catal 2012. [DOI: 10.1021/cs200686a] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hai-Xia Liu
- State Key Laboratory of Physical
Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Na Tian
- State Key Laboratory of Physical
Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Michael P. Brandon
- Centre for the Theory and Application
of Catalysis (CenTACat), School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG,
U.K
| | - Zhi-You Zhou
- State Key Laboratory of Physical
Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Jian-Long Lin
- State Key Laboratory of Physical
Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Christopher Hardacre
- Centre for the Theory and Application
of Catalysis (CenTACat), School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG,
U.K
| | - Wen-Feng Lin
- Centre for the Theory and Application
of Catalysis (CenTACat), School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG,
U.K
| | - Shi-Gang Sun
- State Key Laboratory of Physical
Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, 361005, China
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21
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Li H, Chang G, Zhang Y, Tian J, Liu S, Luo Y, Asiri AM, Al-Youbi AO, Sun X. Photocatalytic synthesis of highly dispersed Pd nanoparticles on reduced graphene oxide and their application in methanol electro-oxidation. Catal Sci Technol 2012. [DOI: 10.1039/c2cy20099f] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Mostafa E, Abd-El-Latif AEAA, Ilsley R, Attard G, Baltruschat H. Quantitative DEMS study of ethanol oxidation: effect of surface structure and Sn surface modification. Phys Chem Chem Phys 2012; 14:16115. [DOI: 10.1039/c2cp42520c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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23
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Antolini E, Gonzalez E. Effect of synthesis method and structural characteristics of Pt–Sn fuel cell catalysts on the electro-oxidation of CH3OH and CH3CH2OH in acid medium☆. Catal Today 2011. [DOI: 10.1016/j.cattod.2010.07.018] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Welsch F, Stöwe K, Maier W. Rapid optical screening technology for direct methanol fuel cell (DMFC) anode and related electrocatalysts. Catal Today 2011. [DOI: 10.1016/j.cattod.2010.03.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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25
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Singh RN, Awasthi R. Graphene support for enhanced electrocatalytic activity of Pd for alcohol oxidation. Catal Sci Technol 2011. [DOI: 10.1039/c1cy00021g] [Citation(s) in RCA: 125] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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26
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Antolini E, Gonzalez E. The electro-oxidation of carbon monoxide, hydrogen/carbon monoxide and methanol in acid medium on Pt-Sn catalysts for low-temperature fuel cells: A comparative review of the effect of Pt-Sn structural characteristics. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.08.077] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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The catalysts supported on metallized electrospun polyacrylonitrile fibrous mats for methanol oxidation. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.01.014] [Citation(s) in RCA: 20] [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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28
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Tominaka S, Shigeto M, Nishizeko H, Osaka T. Synthesis of mesoporous PtCu film modified with Ru submonolayer as catalyst for methanol electrooxidation. Chem Commun (Camb) 2010; 46:8989-91. [DOI: 10.1039/c0cc02611e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Electrodeposited PtCo and PtMn electrocatalysts for methanol and ethanol electrooxidation of direct alcohol fuel cells. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.05.088] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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30
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Lin ZH, Lin MH, Chang HT. Facile synthesis of catalytically active platinum nanosponges, nanonetworks, and nanodendrites. Chemistry 2009; 15:4656-62. [PMID: 19291724 DOI: 10.1002/chem.200802457] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Facile synthesis: Pt nanosponges, nanonetworks, and nanodendrites (see figure) are synthesized through a unique galvanic replacement reaction between Te nanowires and PtCl(6) (2-) ions in the presence of sodium dodecyl sulfate. The three Pt nanomaterials all have large active surface areas and highly electrocatalytic activities for the oxidation of methanol.In this paper, we report a simple approach for the preparation of various porous Pt nanomaterials (NMs) in aqueous solution. Employing different temperatures and concentrations of sodium dodecyl sulfate (SDS), we obtained Pt nanosponges, Pt nanonetworks, and Pt nanodendrites from the reduction of PtCl(6) (2-) ions via galvanic replacement reactions with Te nanowires (length: 879 nm; diameter: 19 nm). At ambient temperature, Pt nanosponges and Pt nanodendrites formed selectively in the presence of SDS at concentrations of <10 mM and>50 mM, respectively. At elevated reaction temperatures, we obtained Pt nanonetworks and Pt nanodendrites in the presence of SDS at concentrations of <10 mM and >50 mM, respectively. Transmission electron microscopy images revealed that these Pt NMs were all composed of one dimensional Pt nanostructures having widths of 3.0+/-1.0 nm and lengths of 17.0+/-4.8 nm. Cyclic voltammetry data indicated that the as-prepared Pt nanonetworks, nanosponges, and nanodendrites possessed large electrochemically active surface areas (77.0, 70.4, and 41.4 m(2) g(-1), respectively). For the electrocatalytic oxidation of methanol, the ratio of the forward oxidation peak current (I(f)) to the backward peak current (I(b)) of the Pt nanodendrites, nanosponges, and nanonetworks were all high (I(f)/I(b)=2.88, 2.66, and 2.16, respectively). These three NMs exhibit greater electrocatalytic activities and excellent tolerance toward poisoning species for the oxidation of methanol when compared with the performance of standard Pt NMs.
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Affiliation(s)
- Zong-Hong Lin
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
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31
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Jingjie W, Haolin T, Mu P, Zhaohui W, Wentao M. Novel methanol electro-oxidation catalyst assisting with functional phthalocyanine supports. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2008.09.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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32
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Electrocatalytic activities of binary and ternary composite electrodes of Pd, nanocarbon and Ni for electro-oxidation of methanol in alkaline medium. J Solid State Electrochem 2008. [DOI: 10.1007/s10008-008-0660-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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33
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Jia J, Cao L, Wang Z. Platinum-coated gold nanoporous film surface: electrodeposition and enhanced electrocatalytic activity for methanol oxidation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:5932-5936. [PMID: 18435551 DOI: 10.1021/la800163f] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
This report describes the preparation of Pt-nanoparticle-coated gold-nanoporous film (PGNF) on a gold substrate via a simple "green" approach. The gold electrode that has been anodized under a high potential of 5 V is reduced by freshly prepared ascorbic acid (AA) solution to obtain gold nanoporous film electrode. Then the Pt nanoparticle is grown on the electrode by cyclic voltammetry (CV). The resulting PGNF electrode has highly ordered arrangement and large surface area, as verified by scanning electron microscopy (SEM) and CV, suggesting that the nanoporous gold film electrode provides a good matrix for obtaining PGNF with high surface area. Furthermore, the as-prepared PGNF electrode exhibited high electrocatalytic activity toward methanol oxidation in a 0.5 M H 2SO 4 solution containing 1.5 M methanol. The present novel strategy is expected to reduce the cost of the Pt catalyst remarkably.
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Affiliation(s)
- Jianbo Jia
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
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