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Wang X, Wei L, Wu J, Zhu A, Zhang Q, Liu Q. Supported core-shell catalysts for enhancing ethanol electrooxidation by C1 pathway. J Colloid Interface Sci 2025; 694:137719. [PMID: 40319719 DOI: 10.1016/j.jcis.2025.137719] [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: 02/21/2025] [Revised: 04/18/2025] [Accepted: 04/26/2025] [Indexed: 05/07/2025]
Abstract
The direct ethanol fuel cell (DEFC) are considered a promising clean energy conversion technology due to their high energy density and low emissions. However, the anodic ethanol oxidation reaction (EOR) follows a dual-pathway mechanism (C1 pathway and C2 pathway) with low efficiency, which limits the performance and industrial application of DEFC. A multi-strategy approach to balance activity, stability, and C1 pathway selectivity in this work was adopted in order to design high-performance core-shell supported palladium (Pd) based catalysts. Au1@Pdx/TiO2-GO and Au1@Pd1.5Sn0.05/TiO2-NGO of core-shell supported catalyst were successfully prepared using the sol-gel method, which show high performance in the EOR. The peak mass current density of the Au1@Pd1.5/TiO2-GO and Au1@Pd1.5Sn0.05/TiO2-NGO catalyst is 4914.8 mA mgPd-1 and 5038.1 mA mgPd-1, which was 6.0 and 6.2 times of the Pd/C(JM) catalyst (816.4 mA mgPd-1), respectively. At the same time, their residual current density after 5000 s of stability testing is 1757.9 mA mgPd-1 and 2160.5 mA mgPd-1, which was 27.3 and 33.5 times of the Pd/C(JM) catalyst (64.5 mA mgPd-1), respectively. The synergistic effect between the core-shell structure and the composite support effectively enhanced the C1 pathway selectivity, regenerative ability, and resistance to CO poisoning of the catalyst in the EOR.
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Affiliation(s)
- Xiaosen Wang
- Department of Chemical & Biochemical Engineering, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
| | - Longbo Wei
- Department of Chemical & Biochemical Engineering, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
| | - Jianyang Wu
- Department of Physics, Jiujiang Research Institute, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, PR China.
| | - Aimei Zhu
- Department of Chemical & Biochemical Engineering, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
| | - Qiugen Zhang
- Department of Chemical & Biochemical Engineering, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
| | - Qinglin Liu
- Department of Chemical & Biochemical Engineering, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
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Yu X, Yue R, Yang S, Fu C, Shu J, Shen L. High-efficient electrooxidation of ethylene glycol and ethanol on PdSn alloy loaded by versatile poly(3,4-ethylenedioxythiophene). J Colloid Interface Sci 2024; 670:473-485. [PMID: 38772263 DOI: 10.1016/j.jcis.2024.05.100] [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: 02/17/2024] [Revised: 05/07/2024] [Accepted: 05/14/2024] [Indexed: 05/23/2024]
Abstract
Developing a novel catalyst with lower noble-metal loading and higher catalytic efficiency is significant for promoting the widespread application of direct alcohol fuel cells (DAFCs). In this work, poly(3,4-ethylenedioxythiophene) (PEDOT) supported the PdSn alloy (PdSn/PEDOT) were simply synthesized and their electrocatalytic performance toward the oxidation of ethylene glycol and ethanol (EGOR and EOR) were investigated in alkaline media, respectively. In comparison with other control catalysts, the optimized Pd4Sn6/PEDOT catalyst exhibits the highest mass activity (7125/4166 mA mgPd-1) and specific activity (26/15 mA cm-2) towards EGOR/EOR. The mass activity of Pd4Sn6/PEDOT for EGOR and EOR are 11.9 and 10.9 times higher than commercial Pd/C, respectively. Moreover, chronoamperometry (CA) and successive cyclic voltammetry (CV) tests show that the CO resistance ability and durability of the Pd4Sn6/PEDOT catalyst were superior to Pd4Sn6, Pd/PEDOT and commercial Pd/C catalysts, which can be attributed to the d-band center of Pd can be effectively downshifted and the interface strain effect between electrons caused by the conjugated structure between PEDOT groups. This work provides an effective strategy for the development of highly efficient anode catalysts of DAFCs.
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Affiliation(s)
- Xiuqing Yu
- College of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China
| | - Ruirui Yue
- College of Life Science, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China
| | - Shiyao Yang
- College of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China
| | - Changqing Fu
- Institute of Organic Functional Molecules, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China
| | - Jinbing Shu
- College of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China.
| | - Liang Shen
- College of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China.
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Yang FK, Fang Y, Li FF, Qu WL, Deng C. Sn-doped PdCu alloy nanosheet assemblies as an efficient electrocatalyst for formic acid oxidation. Dalton Trans 2023; 52:14428-14434. [PMID: 37771290 DOI: 10.1039/d3dt01095c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
A ternary alloy catalyst has been confirmed to be an effective catalyst for anode catalysis in direct formic acid fuel cells, which can improve the electrocatalytic performance of the fuel cell by introducing commonly used metal elements to change the Pd electronic structure and can reduce the use of precious metals and the cost of catalyst production. In this study, PdCuSn Ns/C with a special 3D structure was synthesized by a simple two-step wet chemical method. The PdCuSn Ns/C catalyst prepared exhibits excellent catalytic activity and stability for the formic acid oxidation reaction (FAOR). The mass activity of 2420.1 mA mg-1Pd is 3.94 times that of the Pd/C catalyst. The improvement in the electrocatalytic performance stems from the introduction of Cu and Sn atoms and the unique 3D nanosheet structure, which changes the electronic structure of Pd to increase the reactive active site and accelerates the reaction mass transfer rate, and also reduces the content of precious metals, while improving the electrocatalytic performance. Therefore, the PdCuSn Ns/C catalyst has a promising future in the field of electrocatalysis.
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Affiliation(s)
- Fu-Kai Yang
- College of Chemistry and Chemical Engineering, Harbin Normal University, No. 1 Normal University South Road, Harbin, 150025, China.
| | - Yue Fang
- College of Chemistry and Chemical Engineering, Harbin Normal University, No. 1 Normal University South Road, Harbin, 150025, China.
| | - Fang-Fang Li
- College of Chemistry and Chemical Engineering, Harbin Normal University, No. 1 Normal University South Road, Harbin, 150025, China.
| | - Wei-Li Qu
- College of Chemistry and Chemical Engineering, Harbin Normal University, No. 1 Normal University South Road, Harbin, 150025, China.
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province, China
| | - Chao Deng
- College of Chemistry and Chemical Engineering, Harbin Normal University, No. 1 Normal University South Road, Harbin, 150025, China.
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Zhang M, Cui L, Mao Q, Wang Z, Yu H, Xu Y, Li X, Wang L, Wang H. Heterogeneous Pd-PdO mesoporous film for ammonia electrosynthesis. NANOTECHNOLOGY 2022; 33:385703. [PMID: 35667346 DOI: 10.1088/1361-6528/ac75f8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 06/05/2022] [Indexed: 06/15/2023]
Abstract
Exploring cost-effective and highly active electrocatalysts is of great significance for sustainable electrochemical NH3synthesis. Palladium (Pd)-based catalysts have been unanimously considered as one of the most efficient catalysts for the nitrogen reduction reaction (NRR). Herein, self-supported mesoporous Pd film with partial oxidation on Ni foam (mPd-PdO/NF) was synthesized through the micelle-assisted chemical replacement method coupled with air oxidation under 260 °C, and the mPd-PdO/NF electrocatalyst exhibited superior NRR performance with the maximum values ofrNH3(24.8 mg h-1mgcat.-1) and FE (16.64%) were obtained at -0.1 V, relative to the single counterparts (mPd/NF and mPdO/NF). It is proposed that both metallic Pd and its oxide domains when co-existing with a phase boundary between them can facilitate nitrogen activation and hydrogenation, resulting in an enhanced NRR performance. This work provides an inspiring strategy for the rational design of highly active and durable metal-metal-oxide nanoarchitectonics for ammonia electrosynthesis.
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Affiliation(s)
- Mei Zhang
- State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Lin Cui
- State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Qiqi Mao
- State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Ziqiang Wang
- State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Hongjie Yu
- State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - You Xu
- State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Xiaonian Li
- State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Liang Wang
- State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Hongjing Wang
- State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
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Qin Y, Huang H, Yu W, Zhang H, Li Z, Wang Z, Lai J, Wang L, Feng S. Porous PdWM (M = Nb, Mo and Ta) Trimetallene for High C1 Selectivity in Alkaline Ethanol Oxidation Reaction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2103722. [PMID: 34951154 PMCID: PMC8844492 DOI: 10.1002/advs.202103722] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/28/2021] [Indexed: 05/20/2023]
Abstract
Direct ethanol fuel cells are among the most efficient and environmentally friendly energy-conversion devices and have been widely focused. The ethanol oxidation reaction (EOR) is a multielectron process with slow kinetics. The large amount of by-product generated by incomplete oxidation greatly reduces the efficiency of energy conversion through the EOR. In this study, a novel type of trimetallene called porous PdWM (M = Nb, Mo and Ta) is synthesized by a facile method. The mass activity (15.6 A mgPd -1 ) and C1 selectivity (55.5%) of Pd50 W27 Nb23 /C trimetallene, obtained after optimizing the compositions and proportions of porous PdWM, outperform those of commercial Pt/C (1.3 A mgPt -1 , 5.9%), Pd/C (5.0 A mgPd -1 , 7.2%), and Pd97 W3 /C bimetallene (9.5 A mgPd -1 , 14.1%). The mechanism by which Pd50 W27 Nb23 /C enhances the EOR performance is evaluated by in situ Fourier transform infrared spectroscopy and density functional theory calculations. It is found that W and Nb enhance the adsorption of CH3 CH2 OH and oxophilic high-valence Nb accelerates the subsequent oxidation of CO and CHx species. Moreover, Nb promotes the cleavage of CC bonds and increases the C1 selectivity. Pd60 W28 Mo12 /C and Pd64 W27 Ta9 /C trimetallene synthesized by the same method also exhibit excellent EOR performance.
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Affiliation(s)
- Yingnan Qin
- Key Laboratory of Eco‐chemical EngineeringKey Laboratory of Optic‐electric Sensing and Analytical Chemistry of Life ScienceTaishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and TechnologyLaboratory of Inorganic Synthesis and Applied ChemistryCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042P. R. China
| | - Hao Huang
- School of Sustainable Energy Materials and ScienceJinhua Advanced Research InstituteJinhua321000P. R. China
| | - Wenhao Yu
- Key Laboratory of Eco‐chemical EngineeringKey Laboratory of Optic‐electric Sensing and Analytical Chemistry of Life ScienceTaishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and TechnologyLaboratory of Inorganic Synthesis and Applied ChemistryCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042P. R. China
| | - Haonan Zhang
- Shandong Engineering Research Center for Marine Environment Corrosion and Safety ProtectionCollege of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdao266042P. R. China
| | - Zhenjiang Li
- College of Materials Science and EngineeringQingdao University of Science and TechnologyQingdao266042China
| | - Zuochao Wang
- Key Laboratory of Eco‐chemical EngineeringKey Laboratory of Optic‐electric Sensing and Analytical Chemistry of Life ScienceTaishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and TechnologyLaboratory of Inorganic Synthesis and Applied ChemistryCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042P. R. China
| | - Jianping Lai
- Key Laboratory of Eco‐chemical EngineeringKey Laboratory of Optic‐electric Sensing and Analytical Chemistry of Life ScienceTaishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and TechnologyLaboratory of Inorganic Synthesis and Applied ChemistryCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042P. R. China
| | - Lei Wang
- Key Laboratory of Eco‐chemical EngineeringKey Laboratory of Optic‐electric Sensing and Analytical Chemistry of Life ScienceTaishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and TechnologyLaboratory of Inorganic Synthesis and Applied ChemistryCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042P. R. China
- Shandong Engineering Research Center for Marine Environment Corrosion and Safety ProtectionCollege of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdao266042P. R. China
| | - Shouhua Feng
- Key Laboratory of Eco‐chemical EngineeringKey Laboratory of Optic‐electric Sensing and Analytical Chemistry of Life ScienceTaishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and TechnologyLaboratory of Inorganic Synthesis and Applied ChemistryCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042P. R. China
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