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Nie M, Xu Z, Wang Y, You H, Luo L, Li B, Mutahir S, Gan W, Yuan Q. Ultrafast synthesis of efficient TS-PtCoCu/CNTs composite with high feed-to-product conversion rate by Joule heating for electrocatalytic oxidation of ethanol. J Colloid Interface Sci 2024; 660:334-344. [PMID: 38244500 DOI: 10.1016/j.jcis.2024.01.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 01/07/2024] [Accepted: 01/12/2024] [Indexed: 02/12/2024]
Abstract
Due to the challenges involved in achieving high metal load, uniform metal dispersion and nanosized metal particles simultaneously, it is difficult to develop a simple protocol for the rapid and efficient synthesis of Pt-based composites for electrocatalytic ethanol oxidation reaction (EOR). In this study, a facile ultrafast thermal shock strategy via Joule heating was applied to fabricate a series of PtCoCu ternary nanoalloys decorated carbon nanotube composites (TS-PtCoCu/CNTs), without the need for a reducing agent or surfactant. The TS-PtCoCu/CNTs with optimal Pt content (∼15 %) exhibited excellent EOR activity, with mass and specific activity of 3.58 A mgPt-1 and 5.79 mA cm-2, respectively, which are 3.8 and 13.5 times higher than those of Pt/C. Compared with the control prepared through the traditional furnace annealing, the catalyst also showed excellent activity and stability. DFT calculations revealed that the TS-PtCoCu/CNTs possesses a downshifted d-band center, weakened CO adsorption and higher OH affinity compared with monometallic Pt, all of which lead to the preferred C1 pathway for EOR. This study demonstrates an ultrafast construction of a highly efficient Pt-Co-Cu ternary catalyst for EOR. Additionally, it provides insights into the reaction mechanism based on structural characterization, electrochemical characterization, and theoretical calculations.
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Affiliation(s)
- Mingxing Nie
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China; School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Zhengyu Xu
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Yu Wang
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Hengzhi You
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China; School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Lei Luo
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Binghan Li
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Sadaf Mutahir
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
| | - Wei Gan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China; School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Qunhui Yuan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
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Ju KS, Jang IH, Choe YA, Ri SC, Pak HT, Hong SO. Study on ethanol electro-oxidation over a carbon-supported Pt-Cu alloy catalyst by pinhole on-line electrochemical mass spectrometry. RSC Adv 2022; 13:448-455. [PMID: 36605655 PMCID: PMC9772861 DOI: 10.1039/d2ra06989j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 11/30/2022] [Indexed: 12/24/2022] Open
Abstract
A carbon supported Pt-Cu electrocatalyst was synthesized by the microwave-polyol method following acid-treatment and physically characterized by different techniques including X-ray diffraction (XRD) and transmission electron microscopy (TEM). Both potentiodynamic and potentiostatic measurements with pinhole on-line electrochemical mass spectrometry were carried out to study the electrocatalytic activity and reaction intermediates of Pt/C and Pt-Cu/C electrocatalysts during the ethanol oxidation reaction. The results of potentiodynamic and potentiostatic measurements showed that the Pt-Cu/C electrocatalyst has higher ethanol oxidation efficiency and incomplete ethanol oxidation to acetaldehyde and acetic acid prevails under the given conditions. After calibration of the m/z = 44 mass signal, the CO2 current efficiencies on Pt/C and PtCu-3/C were ∼7% and ∼12%, respectively, which reveal that the presence of copper enhances the complete ethanol oxidation to CO2.
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Affiliation(s)
- Kyong-Sik Ju
- High-Tech Research and Development Center, Kim Il Sung UniversityPyongyangDemocratic People's Republic of Korea
| | - In-Ho Jang
- Faculty of Chemistry, Kim Il Sung UniversityPyongyangDemocratic People's Republic of Korea
| | - Yong-A. Choe
- High-Tech Research and Development Center, Kim Il Sung UniversityPyongyangDemocratic People's Republic of Korea
| | - Song-Chun Ri
- High-Tech Research and Development Center, Kim Il Sung UniversityPyongyangDemocratic People's Republic of Korea
| | - Hyon-Tae Pak
- Faculty of Chemistry, Kim Il Sung UniversityPyongyangDemocratic People's Republic of Korea
| | - Su-Ok Hong
- Digital Laboratory, Kim Il Sung UniversityPyongyangDemocratic People's Republic of Korea
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Guo R, An N, Huang Y, Guan L, Zhang G, Zhu G, Liu Z. One-Pot Synthesis of Pt High Index Facets Catalysts for Electrocatalytic Oxidation of Ethanol. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4451. [PMID: 36558304 PMCID: PMC9781058 DOI: 10.3390/nano12244451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/12/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Direct ethanol fuel cell (DEFC) has attracted wide attention due to its wide range of fuel sources, cleanliness, and high efficiency. However, the problems of low catalytic efficiency and poor catalyst stability still exist in DEFC catalysts, which restrict its rapid development. With chloroplatinic acid (H2PtCl6·6H2O) as the precursor, Polyvinylpyrrolidone (PVP) plays the role of surfactant, stabilizer, and reducing agent in the experiment. Glycine is the surface control agent and co-reducing agent. Pt high-index facets nanocatalyst was prepared with the one-pot hydrothermal method by adjusting the amount of PVP and glycine. X-Ray Diffraction (XRD), transmission electron microscope (TEM), and scanning electron microscope (SEM) were used to characterize the micro-structure of the nanocatalyst, and the influence of PVP and glycine on the synthesis of high-index facets catalyst was studied. The electrocatalytic performance of the catalyst was tested with an electrochemical workstation, and it was found that the performance of the prepared catalyst was better than that of the commercial catalyst. When the mass ratio of PVP and Pt was 50:1 and the molar ratio of glycine and Pt was 24:1, Pt nanocatalysts with {310}, {520} and {830} high exponential facets were prepared. The electrochemical test results showed that the peak current density of ethanol oxidation was 2.194 m2/g, and the steady-state current density was 0.241 mA/cm2, which was 5.7 times higher than that of commercial catalyst. The results of this paper show that due to the defects such as steps and kinks on the surface of the high-index facets, the active sites are increased, thus showing excellent electrocatalytic performance. This study provides a theoretical basis for the development and commercial application of high index facets nanocatalysts.
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Affiliation(s)
- Ruihua Guo
- College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China
- Inner Mongolia Key Laboratory of Advanced Ceramics and Device, Inner Mongolia University of Science and Technology, Baotou 014010, China
- Key Laboratory of Green Extraction and Efficient Utilization of Light Rare Earth Resources of Ministry of Education, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Na An
- College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China
- Inner Mongolia Key Laboratory of Advanced Ceramics and Device, Inner Mongolia University of Science and Technology, Baotou 014010, China
- Key Laboratory of Green Extraction and Efficient Utilization of Light Rare Earth Resources of Ministry of Education, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Yarong Huang
- College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Lili Guan
- College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China
- Inner Mongolia Key Laboratory of Advanced Ceramics and Device, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Guofang Zhang
- College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Guofu Zhu
- College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Zhaogang Liu
- College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China
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Promoting the Electrocatalytic Ethanol Oxidation Activity of Pt by Alloying with Cu. Catalysts 2022. [DOI: 10.3390/catal12121562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
Abstract
The development and commercialization of direct ethanol fuel cells requires active and durable electro-catalysts towards the ethanol oxidation reactions (EOR). Rational composition and morphology control of Pt-based alloy nanocrystals can not only enhance their EOR reactivity but also reduce the consumption of precious Pt. Herein, PtCu nanocubes (NCs)/CB enclosed by well-defined (100) facets were prepared by solution synthesis, exhibiting much higher mass activity (4.96 A mgPt−1) than PtCu nanoparticles (NPs)/CB with irregular shapes (3.26 A mgPt−1) and commercial Pt/C (1.67 A mgPt−1). CO stripping and in situ Fourier transform infrared spectroscopy (FTIR) experiments indicate that the alloying of Cu enhanced the adsorption of ethanol, accelerated the subsequent oxidation of intermediate species, and increased the resistance to CO poisoning of PtCu NCs/CB, as compared with commercial Pt/C. Therefore, alloying Pt with earth-abundant Cu under rational composition and surface control can optimize its surface and electronic structures and represents a promising strategy to promote the performance of electro-catalysts while reduce the use of precious metals.
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Qiao M, Wu H, Meng FY, Zhuang Z, Wang JX. Defect-Rich, Highly Porous PtAg Nanoflowers with Superior Anti-Poisoning Ability for Efficient Methanol Oxidation Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2106643. [PMID: 35224851 DOI: 10.1002/smll.202106643] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 01/18/2022] [Indexed: 06/14/2023]
Abstract
The design of efficient and sustainable Pt-based catalysts is the key to the development of direct methanol fuel cells. However, most Pt-based catalysts still exhibit disadvantages including unsatisfied catalytic activity and serious CO poisoning in the methanol oxidation reaction (MOR). Herein, highly porous PtAg nanoflowers (NFs) with rich defects are synthesized by using liquid reduction combining chemical etching. It is demonstrated that the proportion of precursors determines the inhomogeneity of alloy elements, and the strong corrosiveness of nitric acid to silver leads to the eventual porous flower-like structure. Impressively, the optimal etched Pt1 Ag2 NFs have the mixed defects of surface steps, dislocations, and bulk holes, and their mass activity (1136 mA mgPt-1 ) is 2.6 times higher than that of commercial Pt/C catalysts, while the ratio of forward and backward peak current density (If /Ib ) can reach 3.2, exhibiting an excellent anti-poisoning ability. Density functional theory calculations further verify their high anti-poison properties from both an adsorption and an oxidation perspective of CO intermediate. The introduction of Ag makes it easier for CO to be oxidized and removed. This study provides a facile approach to prepare rich defects and porous alloy with excellent MOR performance and superior anti-poisoning ability.
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Affiliation(s)
- Meng Qiao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Hao Wu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Fan-Yi Meng
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Zhongbin Zhuang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jie-Xin Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
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Pushpalatha N, Abraham EV, Saravanan G. Pt–Cu nanoalloy catalysts: compositional dependence and selectivity for direct electrochemical oxidation of formic acid. NEW J CHEM 2022. [DOI: 10.1039/d2nj01871c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A PtCu3 nanoalloy catalyst showed much enhanced catalytic activity for the direct electrochemical oxidation of formic acid compared to a commercial platinum catalyst.
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Affiliation(s)
- Nataraj Pushpalatha
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), CSIR, Madras Complex, Taramani, Chennai, 600 113, India
| | - Elezabeth V. Abraham
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), CSIR, Madras Complex, Taramani, Chennai, 600 113, India
| | - Govindachetty Saravanan
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), CSIR, Madras Complex, Taramani, Chennai, 600 113, India
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7
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Effect of Acid Treatment on Electrocatalytic Performance of PtNi Catalyst. Chem Res Chin Univ 2020. [DOI: 10.1007/s40242-020-0207-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Deep eutectic solvent-assisted synthesis of highly efficient PtCu alloy nanoclusters on carbon nanotubes for methanol oxidation reaction. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134677] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Huang M, Zhang J, Wu C, Guan L. Pt Nanoparticles Densely Coated on SnO 2-Covered Multiwalled Carbon Nanotubes with Excellent Electrocatalytic Activity and Stability for Methanol Oxidation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:26921-26927. [PMID: 28741355 DOI: 10.1021/acsami.7b07866] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A new electrocatalyst exhibiting enhanced activity and stability is designed from SnO2-covered multiwalled carbon nanotubes coated with 85 wt % ratio Pt nanoparticles (NPs). This catalyst showed a mass activity 6.2 times as active as that of the commercial Pt/C for methanol oxidation, owing to the unique one-dimensional structure. Moreover, the durability and antipoisoning ability were also improved greatly. The enhanced intrinsic performance was ascribed to the densely connected networks of Pt NPs on the SnO2 NPs.
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Affiliation(s)
- Meihua Huang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and ‡Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350108, China
| | - Jianshuo Zhang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and ‡Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350108, China
| | - Chuxin Wu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and ‡Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350108, China
| | - Lunhui Guan
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and ‡Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350108, China
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Yang Z, Wang X, Kang X, Zhang S, Guo Y. The PtPdAg/C electrocatalyst with Pt-rich surfaces via electrochemical dealloying of Ag and Pd for ethanol oxidation. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.03.165] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Zamanzad Ghavidel M, Monteverde Videla AH, Specchia S, Easton EB. The relationship between the structure and ethanol oxidation activity of Pt-Cu/C alloy catalysts. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.01.129] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Applicability of MOS structures in monitoring catalytic properties, as exemplified for monolayer-iron-oxide-coated porous platinum films. J Catal 2016. [DOI: 10.1016/j.jcat.2016.10.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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dos Reis RGCS, Colmati F. Electrochemical alcohol oxidation: a comparative study of the behavior of methanol, ethanol, propanol, and butanol on carbon-supported PtSn, PtCu, and Pt nanoparticles. J Solid State Electrochem 2016. [DOI: 10.1007/s10008-016-3323-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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15
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Ju KJ, Feng JJ, Zhang QL, Wei J, Wang AJ. 5-Aminoorotic acid directed synthesis of graphene-supported AuPt nanocrystals with enhanced electrocatalytic properties. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.149] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Methanol electrooxidation on flexible multi-walled carbon nanotube-modified sponge-based nickel electrode. J Solid State Electrochem 2015. [DOI: 10.1007/s10008-015-2897-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Simple one-pot synthesis of platinum-palladium nanoflowers with enhanced catalytic activity and methanol-tolerance for oxygen reduction in acid media. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.06.052] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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