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Mao G, Zhou Q, Wang B, Xiong Y, Zheng X, Ma J, Fu L, Luo L, Wang Q. Modulating d-Orbital electronic configuration via metal-metal oxide interactions for boosting electrocatalytic methanol oxidation. J Colloid Interface Sci 2025; 677:657-665. [PMID: 39159520 DOI: 10.1016/j.jcis.2024.08.033] [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: 05/31/2024] [Revised: 07/19/2024] [Accepted: 08/06/2024] [Indexed: 08/21/2024]
Abstract
Coordinating the interfacial interaction between Pt-based nanoparticles (NPs) and supports is a significant strategy for the modulation of d-orbital electronic configuration and the adsorption behaviors of intermediates, which is of critical importance for boosting electrocatalytic performance. Herein, we demonstrated a specific synergy effect between the ordered PtFe intermetallic and neighboring oxygen vacancies (Ov), which provides an "ensemble reaction pool" to balance the barriers of both the activity, stability, and CO poisoning issues for the methanol oxidation reaction (MOR). In our proposed "ensemble reaction pool", the deprotonation of methanol occurs on the Pt site to form the intermediate *CO, where the strain derived from the PtFe intermetallic could alter the d-orbital electronic configuration of Pt, intrinsically weakening the *CO adsorption energy, and Ov in CeO2 promote hydroxyl species (*OH) adsorption, which will react with *CO, facilitating the dissociative adsorption of *CO, thus cooperatively enhancing the performance of MOR. The X-ray absorption fine structure (XAFS) analyses reveal the electron transfer in CeO2 and then convert Ce4+ to Ce3+. The density functional theory (DFT) calculations revealed that introducing Fe induces strain could modify the d-band center of Pt, and thus lower the energy barrier of the potential-determining step. Meanwhile, the introduction of CeO2 can favor the *OH adsorption, speeding up the oxidation and removal of *CO blocked at the Pt site. Furthermore, the determined atomic arrangement and surface composition of PtFe intermetallic further guarantee the stability of MOR by suppressing less-noble metal into the electrolyte.
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Affiliation(s)
- Guangtao Mao
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Institute of Dual-carbon and New Energy Technology Innovation and Development of Guizhou Province, Guiyang, Guizhou 550025, China
| | - Qian Zhou
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Institute of Dual-carbon and New Energy Technology Innovation and Development of Guizhou Province, Guiyang, Guizhou 550025, China
| | - Bin Wang
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Institute of Dual-carbon and New Energy Technology Innovation and Development of Guizhou Province, Guiyang, Guizhou 550025, China
| | - Yuan Xiong
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Institute of Dual-carbon and New Energy Technology Innovation and Development of Guizhou Province, Guiyang, Guizhou 550025, China
| | - Xingqun Zheng
- College of Safety Engineering, Chongqing University of Science & Technology, Chongqing 401331, China.
| | - Jun Ma
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Institute of Dual-carbon and New Energy Technology Innovation and Development of Guizhou Province, Guiyang, Guizhou 550025, China
| | - Lin Fu
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Institute of Dual-carbon and New Energy Technology Innovation and Development of Guizhou Province, Guiyang, Guizhou 550025, China
| | - Leqing Luo
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Institute of Dual-carbon and New Energy Technology Innovation and Development of Guizhou Province, Guiyang, Guizhou 550025, China
| | - Qingmei Wang
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Institute of Dual-carbon and New Energy Technology Innovation and Development of Guizhou Province, Guiyang, Guizhou 550025, China.
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Zhang Y, Zhang Y, Jamal R, Xie S, Abdurexit A, Abdiryim T, Yang H, Song K. Polythiophene-coated carbon nano boxes for efficient platinum-based catalysts for methanol electrooxidation. J Colloid Interface Sci 2024; 675:24-35. [PMID: 38964122 DOI: 10.1016/j.jcis.2024.06.247] [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: 04/08/2024] [Revised: 06/29/2024] [Accepted: 06/30/2024] [Indexed: 07/06/2024]
Abstract
To improve the efficiency of the methanol oxidation reaction (MOR) in direct methanol fuel cells (DMFCs), it is essential to develop catalysts with high catalytic activity. However, constructing polyatomic doped carbon nanomaterials and understanding the interaction mechanisms between dopant elements remain significant challenges. In this study, we propose nitrogen-doped carbon nanobox (CNB) derived from Zeolitic Imidazolate Framework-67 (ZIF-67) crystals as precursors to serve as carriers for highly efficient platinum nanoparticles (Pt NPs). We synthesized platinum/poly(3,4-propylenedioxythiophene)/carbon nanobox (Pt/PProDOT/CNB) composites by wrapping CNB around PProDOT films via in situ oxidative polymerization. This unique structural design provides several advantages to the catalyst, including a large active surface area, numerous accessible electrocatalytic active centers, an optimized electronic structure, and good electronic conductivity. The Pt/PProDOT/CNB composites demonstrated excellent methanol oxidation performance, with a remarkable mass activity (MA) of 1639.9 mA mg-1Pt and a high electrochemical active surface area (ECSA) of 160.8 m2/g. Furthermore, the catalyst exhibited good CO resistance and outstanding durability.
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Affiliation(s)
- Yu Zhang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, Xinjiang, PR China
| | - Yaolong Zhang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, Xinjiang, PR China
| | - Ruxangul Jamal
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, Xinjiang, PR China
| | - Shuyue Xie
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, Xinjiang, PR China
| | - Abdukeyum Abdurexit
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, Xinjiang, PR China
| | - Tursun Abdiryim
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, Xinjiang, PR China.
| | - Hongtao Yang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, Xinjiang, PR China
| | - Kai Song
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, Xinjiang, PR China
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Zhou Y, Yuan Q. PtCu/Pt core/atomic-layer shell hollow octahedra for oxygen reduction and methanol oxidation electrocatalysis. Chem Commun (Camb) 2024; 60:2918-2921. [PMID: 38372193 DOI: 10.1039/d4cc00030g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Engineering effective bifunctional electrocatalysts that outperform the benchmark Pt/C for direct methanol proton exchange membrane fuel cells is desired and challenging. Here, we designed H-PtCu/PtL OH catalysts with a sub-nanometer Pt(111) shell layer featuring Cu- and Co-vacancies, which exhibited high activity in acidic oxygen reduction and methanol oxidation reactions.
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Affiliation(s)
- Yi Zhou
- State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, College of Chemistry and Chemical Engineering, Guizhou University, Guiyang, 550025, P. R. China.
| | - Qiang Yuan
- State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, College of Chemistry and Chemical Engineering, Guizhou University, Guiyang, 550025, P. R. China.
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Chen Y, Zhao X, Yan H, Sun L, Chen S, Zhang S, Zhang J. Manipulating Pt-skin of porous network Pt-Cu alloy nanospheres toward efficient oxygen reduction. J Colloid Interface Sci 2023; 652:1006-1015. [PMID: 37639923 DOI: 10.1016/j.jcis.2023.08.134] [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: 07/31/2023] [Revised: 08/12/2023] [Accepted: 08/20/2023] [Indexed: 08/31/2023]
Abstract
Designing Pt-skin on the catalyst surface is critical to developing efficient and stable electrocatalysts toward oxygen reduction reaction (ORR) in proton exchange membrane fuel cells. In this paper, an acidic reductant is proposed to synchronously manipulate in-situ growth of Pt-skin on the surface of alloyed Pt-Cu nanospheres (PtCuNSs) by a facile one-pot synthesis in an aqueous solution. Ascorbic acid can create a Pt-skin of three atomic layers to make the typical PtCu-alloy@Pt-skin core/shell nanostructure rather than the uniform alloys generated by using alkaline reductants. Surfactant as soft-template can make the alloyed PtCuNSs with a three-dimensional porous network structure. Multiple characterizations of XRD, XPS and XAFS are used to confirm Pt-alloying with Cu and formation of core/shell structure of such a catalyst. This PtCuNSs/C exhibits a half-wave potential of 0.913 V (vs. RHE), with mass activity and specific activity about 3.5 and 6.4 times higher than those of Pt/C, respectively. Fuel cell tests verify the excellent activity of PtCuNSs/C catalyst with a maximum power density of about 1.2 W cm-2. Moreover, this catalyst shows excellent stability, achieving a long-term operation of 40,000 cycles. Furthermore, theoretical calculations reveal the enhancement effect of characteristic PtCu-alloy@Pt-skin nanostructure on both catalytic ORR activity and stability.
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Affiliation(s)
- Yizhe Chen
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shanghai 200444, China
| | - Xiao Zhao
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shanghai 200444, China
| | - Huangli Yan
- College of Chemistry and Molecular Sciences, Wuhan University, Hubei Key Laboratory of Electrochemical Power Sources, Wuhan 430072, Hubei, China
| | - Liangyu Sun
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shanghai 200444, China
| | - Shengli Chen
- College of Chemistry and Molecular Sciences, Wuhan University, Hubei Key Laboratory of Electrochemical Power Sources, Wuhan 430072, Hubei, China
| | - Shiming Zhang
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shanghai 200444, China.
| | - Jiujun Zhang
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shanghai 200444, China.
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Lu Q, Gu X, Li J, Li W, Luque R, Eid K. Unraveling ultrasonic assisted aqueous-phase one-step synthesis of porous PtPdCu nanodendrites for methanol oxidation with a CO-poisoning tolerance. ULTRASONICS SONOCHEMISTRY 2023; 98:106494. [PMID: 37356216 PMCID: PMC10319326 DOI: 10.1016/j.ultsonch.2023.106494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/10/2023] [Accepted: 06/16/2023] [Indexed: 06/27/2023]
Abstract
The tailored design of tri-metallic Pt-based porous nanodendrites (PNDs) is crucial for green energy production technologies, ascribed to their fancy features, great surface areas, accessible active sites, and stability against aggregation. However, their aqueous-phase one-step synthesis at room temperature remains a daunting challenge. Herein, we present a facile, green, and template-free approach for the one-step synthesis of PtPdCu PNDs by ultrasonication of an aqueous solution of metal salts and Pluronic F127 at 25 ℃, based on natural isolation among nucleation and growth step driven by the disparate reduction kinetics of the metals and acoustic cavitation mechanism of ultrasonic waves. The resultant PtPdCu PNDs formed in a spatial nanodendritic shape with a dense array of branches, open corners, interconnected pores, high surface area (46.9 m2/g), and high Cu content (21 %). The methanol oxidation reaction (MOR) mass activity of PtPdCu PNDs (3.66 mA/µgPt) is 1.45, 2.73, and 2.83 times higher than those of PtPd PNDs, PtCu PNDs, and commercial Pt/C, respectively based on equivalent Pt mass, which is superior to previous PtPdCu catalysts reported elsewhere, besides a superior durability and CO-poisoning tolerance. This study may pave the way for the controlled fabrication of ternary Pt-based PNDs for various electrocatalytic applications.
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Affiliation(s)
- Qingqing Lu
- Engineering & Technology Center of Electrochemistry, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Xilei Gu
- Engineering & Technology Center of Electrochemistry, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Jiaojiao Li
- Engineering & Technology Center of Electrochemistry, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Wenpeng Li
- Engineering & Technology Center of Electrochemistry, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Rafael Luque
- Peoples Friendship University of Russia (RUDN University), 6 Miklukho Maklaya str., 117198 Moscow, Russian Federation; Universidad ECOTEC, Km 13.5 Samborondón, Samborondón EC092302, Ecuador
| | - Kamel Eid
- Gas Processing Center (GPC), College of Engineering, Qatar University, Doha 2713, Qatar.
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