1
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Du R, Zhong Q, Tan X, Liao L, Tang Z, Chen S, Yan D, Zhao X, Zeng F. Optimized Electrodeposition of Ni 2O 3 on Carbon Paper for Enhanced Electrocatalytic Oxidation of Ethanol. ACS OMEGA 2024; 9:30404-30414. [PMID: 39035965 PMCID: PMC11256107 DOI: 10.1021/acsomega.4c01658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 05/10/2024] [Accepted: 05/23/2024] [Indexed: 07/23/2024]
Abstract
The urgent need for sustainable and efficient energy conversion technologies has propelled research into novel electrocatalysts for fuel cell applications. This study investigates a carbon paper (CP)-supported Ni2O3 catalyst for the electrocatalytic oxidation of ethanol. We utilized electrodeposition to uniformly deposit/dop Ni2O3 onto the CP, creating an effective electrocatalyst. Our approach allows the tailoring of the doping degree by adjusting the electrodeposition potential. The optimal doping degree, achieved at a medium deposition potential, results in an electrode with high intrinsic activity and a substantial electrochemically active surface area (ECSA), thereby enhancing its electrocatalytic activity. This catalyst efficiently facilitates the oxidation of ethanol to formic acid while maintaining good stability. The enhanced performance is attributed to the effective interface and interaction between Ni2O3 and CP. This work not only provides insights into the design of efficient Ni-based catalysts for ethanol oxidation but also paves the way for developing advanced materials for renewable energy conversion.
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Affiliation(s)
- Ruixing Du
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Qitong Zhong
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Xing Tan
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Longfei Liao
- School
of Materials Science and Engineering, Harbin
Institute of Technology (Shenzhen), Shenzhen 518055, Guangdong, China
| | - Zhenchen Tang
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Shiming Chen
- School
of Intelligent Medicine, China Medical University, Shenyang 110122, Liaoning, China
| | - Dafeng Yan
- College
of Chemistry and Chemical Engineering, Hubei
University, Wuhan 430062, China
| | - Xuebin Zhao
- Technology
Center, China Tobacco Henan Industrial Co., Ltd., Zhengzhou 450000, China
| | - Feng Zeng
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
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2
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Ling X, Ao Y, Zheng J, Han M, Xu D. Facile Synthesis of High-Entropy Alloy Nanowires for Electrocatalytic Alcohol Oxidation. Chempluschem 2024; 89:e202400010. [PMID: 38238259 DOI: 10.1002/cplu.202400010] [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: 01/05/2024] [Revised: 01/16/2024] [Indexed: 02/02/2024]
Abstract
Considering the structural and compositional advantages of high-entropy alloy (HEA) as high-efficient electrocatalysts, we here present a facile method to prepare high-entropy alloy nanowires with seven elements in an aqueous solution. The as-synthesized PdPtCuAgAuPbCo nanowires possess dispersed one-dimensional morphology and exhibit enhanced electrocatalytic performance with the mass activity of 9.9 A mgPd+Pt -1 toward ethanol electrooxidation. The HEA nanowires also perform superior stability, resistance to CO poisoning, and good electrocatalytic activities toward other alcohols (e. g., ethylene glycol and methanol) oxidation. The synthesis strategy is easy to operate with low cost and has wide application prospects for preparing desired electrocatalysts for fuel cells.
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Affiliation(s)
- Xinyi Ling
- Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, P. R. China
| | - Yunyun Ao
- Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, P. R. China
| | - Jinyu Zheng
- Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, P. R. China
| | - Min Han
- Fujian Cross Strait Institute of Flexible Electronics (Future Technology), Fujian Normal University, Fuzhou, 350117, P. R. China
| | - Dongdong Xu
- Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, P. R. China
- State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210023, P. R. China
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3
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Jiang N, Zhu L, Liu P, Zhang P, Gan Y, Zhao Y, Jiang Y. Laser Irradiation Synthesis of AuPd Alloy with Decreased Alloying Degree for Efficient Ethanol Oxidation Reaction. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1876. [PMID: 38673231 PMCID: PMC11052525 DOI: 10.3390/ma17081876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/12/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024]
Abstract
The preparation of electrocatalysts with high performance for the ethanol oxidation reaction is vital for the large-scale commercialization of direct ethanol fuel cells. Here, we successfully synthesized a high-performance electrocatalyst of a AuPd alloy with a decreased alloying degree via pulsed laser irradiation in liquids. As indicated by the experimental results, the photochemical effect-induced surficial deposition of Pd atoms, combined with the photothermal effect-induced interdiffusion of Au and Pd atoms, resulted in the formation of AuPd alloys with a decreased alloying degree. Structural characterization reveals that L-AuPd exhibits a lower degree of alloying compared to C-AuPd prepared via the conventional co-reduction method. This distinct structure endows L-AuPd with outstanding catalytic activity and stability in EOR, achieving mass and specific activities as high as 16.01 A mgPd-1 and 20.69 mA cm-2, 9.1 and 5.2 times than that of the commercial Pd/C respectively. Furthermore, L-AuPd retains 90.1% of its initial mass activity after 300 cycles. This work offers guidance for laser-assisted fabrication of efficient Pd-based catalysts in EOR.
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Affiliation(s)
- Nan Jiang
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
- Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, Beijing 100124, China
- Beijing Engineering Research Centre of Laser Technology, Beijing University of Technology, Beijing 100124, China
| | - Liye Zhu
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
- Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, Beijing 100124, China
- Beijing Engineering Research Centre of Laser Technology, Beijing University of Technology, Beijing 100124, China
| | - Peng Liu
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
| | - Pengju Zhang
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
- Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, Beijing 100124, China
- Beijing Engineering Research Centre of Laser Technology, Beijing University of Technology, Beijing 100124, China
| | - Yuqi Gan
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
- Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, Beijing 100124, China
- Beijing Engineering Research Centre of Laser Technology, Beijing University of Technology, Beijing 100124, China
| | - Yan Zhao
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
- Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, Beijing 100124, China
- Beijing Engineering Research Centre of Laser Technology, Beijing University of Technology, Beijing 100124, China
| | - Yijian Jiang
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
- Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, Beijing 100124, China
- Beijing Engineering Research Centre of Laser Technology, Beijing University of Technology, Beijing 100124, China
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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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5
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Ge M, Huang J, Tian Y, Zhou L, Li H, Zhang A, Zhu S, Zhu X, Li Q, Min Y, Xu Q, Yuan X. Electrodeposition-Assisted Crystal Growth Regulation of PdBi Clusters on Carbon Cloths for Ethanol Oxidation. Inorg Chem 2023; 62:15138-15147. [PMID: 37676812 DOI: 10.1021/acs.inorgchem.3c02190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Carbon-supported Pd-based clusters are one of the most promising anodic catalysts for ethanol oxidation reaction (EOR) due to their encouraging activity and practical applications. However, unclear growth mechanism of Pd-based clusters on the carbon-based materials has hindered their extensive applications. Herein, we first introduce multi-void spherical PdBi cluster/carbon cloth (PdBi/CC) composites by an electrodeposition routine. The growth mechanism of PdBi clusters on the CC supports has been systemically investigated by evaluating the selected samples and tuning their compositions, which involve the big difference in standard redox potential between Pd2+/Pd and Bi3+/Bi and easy adsorption of Bi3+ on the surface of Pd-rich seeds. Benefitting from the ensembles of many nanocrystal subunits, multi-void spherical PdBi clusters can present collective properties and novel functionalities. In addition, the outstanding characteristics of CC supports enable PdBi clusters with stable nanostructures. Thanks to the unique structure, Pd20Bi/CC catalysts manifest higher EOR activity and better stability compared to Pd/CC. Systematic characterizations and a series of CO poisoning tests further confirm that the dramatically enhanced EOR activity and stability can be attributed to the incorporation of Bi species and the strong coupling of the structure between PdBi clusters and CC supports.
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Affiliation(s)
- Ming Ge
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Jialu Huang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Yuan Tian
- State Key Laboratory of Space Power-Sources Technology, Shanghai Institute of Space Power-Sources, Shanghai 200245, China
| | - Luozeng Zhou
- State Key Laboratory of Space Power-Sources Technology, Shanghai Institute of Space Power-Sources, Shanghai 200245, China
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Han Li
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Aichuang Zhang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Sheng Zhu
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai 200090, China
| | - Xiaorong Zhu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Qiaoxia Li
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai 200090, China
| | - Yulin Min
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai 200090, China
| | - Qunjie Xu
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai 200090, China
| | - Xiaolei Yuan
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
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6
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Guo J, Liu W, Fu X, Jiao S. Wet-chemistry synthesis of two-dimensional Pt- and Pd-based intermetallic electrocatalysts for fuel cells. NANOSCALE 2023; 15:8508-8531. [PMID: 37114369 DOI: 10.1039/d3nr00955f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Two-dimensional (2D) noble-metal-based nanomaterials have attracted tremendous attention and have widespread promising applications as a result of their unique physical, chemical, and electronic properties. Especially, 2D Pt- and Pd-based intermetallic nanoplates (IMNPs) and nanosheets (IMNSs) are widely studied for fuel cell (FC)-related reactions, including the cathodic oxygen reduction reaction (ORR) and anodic formic acid, methanol and ethanol oxidation reactions (FAOR, MOR and EOR). Wet-chemistry synthesis is a powerful strategy to prepare metallic nanocrystals with well-controlled dispersity, size, and composition. In this review, a fundamental understanding of the FC-related reactions is firstly elaborated. Subsequently, the current wet-chemistry synthesis pathways for 2D Pt- and Pd-based IMNPs and IMNSs are briefly summarized, as well as their electrocatalytic applications including in the ORR, FAOR, MOR, and EOR. Finally, we provide an overview of the opportunities and current challenges and give our perspectives on the development of high-performance 2D Pt- and Pd-based intermetallic electrocatalysts towards FCs. We hope this review offers timely information on the synthesis of 2D Pt- and Pd-based IMNPs and IMNSs and provides guidance for the efficient synthesis and application of them.
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Affiliation(s)
- Jingchun Guo
- Department of Experimental and Practical Teaching Management, West Anhui University, Lu'an 237012, China.
| | - Wei Liu
- Department of Experimental and Practical Teaching Management, West Anhui University, Lu'an 237012, China.
| | - Xucheng Fu
- Department of Experimental and Practical Teaching Management, West Anhui University, Lu'an 237012, China.
| | - Shilong Jiao
- School of Materials, Key Lab for Special Functional Materials of Ministry of Education, Henan University, Jinming Avenue, Kaifeng 475001, China.
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7
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Zhang M, Zhang X, Lv M, Yue X, Zheng Z, Xia H. Ethanol Oxidation via 12-Electron Pathway on Spiky Au@AuPd Nanoparticles Assisted by Near-Infrared Light. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205781. [PMID: 36775916 DOI: 10.1002/smll.202205781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/13/2022] [Indexed: 05/04/2023]
Abstract
In this work, ethanol oxidation reaction (EOR) via 12-electron (C1-12e) pathway on spiky Au@AuPd nanoparticles (NPs) with ultrathin AuPd alloy shells is achieved in alkaline media with the assistance of the near-infrared (NIR) light. It is found that OH radicals can be produced from the OHads species adsorbed on the surfaces of Pd atoms led by surface plasmon resonance (SPR) effect of spiky Au@AuPd NPs under the irradiation of NIR light. Moreover, OH radicals play the key role for the achievement of EOR proceeded by the desirable C1-12e pathway because OH radicals can directly break the C-C bonds of ethanol. Accordingly, the electrocatalytic performance of spiky Au@AuPd NPs toward EOR under NIR light is greatly improved. For instance, their mass activity can be up to 33.2 A mgpd -1 in the 0.5 m KOH solution containing 0.5 m ethanol, which is about 158 times higher than that of commercial Pd/C catalysts (0.21 A mgpd -1 ) and is better than those of the state-of-the-art Pd-based catalysts reported in literature thus far, to the best of our knowledge. Moreover, their highest mass activity can be further improved to 118.3 A mgpd -1 in the 1.5 m KOH solution containing 1.25 m ethanol.
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Affiliation(s)
- Mengmeng Zhang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Xiang Zhang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Min Lv
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Xinru Yue
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Zhaoke Zheng
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Haibing Xia
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
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ZIF-67-Derived NiCo-Layered Double Hydroxide@Carbon Nanotube Architectures with Hollow Nanocage Structures as Enhanced Electrocatalysts for Ethanol Oxidation Reaction. Molecules 2023; 28:molecules28031173. [PMID: 36770843 PMCID: PMC9920546 DOI: 10.3390/molecules28031173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/17/2023] [Accepted: 01/23/2023] [Indexed: 01/27/2023] Open
Abstract
The rational design of efficient Earth-abundant electrocatalysts for the ethanol oxidation reaction (EOR) is the key to developing direct ethanol fuel cells (DEFCs). Among these, the smart structure is highly demanded for highly efficient and stable non-precious electrocatalysts based on transition metals (such as Ni, Co, and Fe). In this work, high-performance NiCo-layered double hydroxide@carbon nanotube (NiCo-LDH@CNT) architectures with hollow nanocage structures as electrocatalysts for EOR were prepared via sacrificial ZIF-67 templates on CNTs. Comprehensive structural characterizations revealed that the as-synthesized NiCo-LDH@CNTs architecture displayed 3D hollow nanocages of NiCo-LDH and abundant interfacial structure between NiCo-LDH and CNTs, which could not only completely expose active sites by increasing the surface area but also facilitate the electron transfer during the electrocatalytic process, thus, improving EOR activity. Benefiting from the 3D hollow nanocages and interfacial structure fabricated by the sacrificial ZIF-67-templated method, the NiCo-LDH@CNTs-2.5% architecture exhibited enhanced electrocatalytic activity for ethanol oxidation compared to single-component NiCo-LDH, where the peak current density was 11.5 mA·cm-2, and the jf/jb value representing the resistance to catalyst poisoning was 1.72 in an alkaline environment. These results provide a new perspective on the fabrication of non-precious metal electrocatalysts for EOR in DEFCs.
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Chen WJ, Zhang TY, Wu XQ, Li YS, Liu Y, Wu YP, He ZB, Li DS. A 3D Ni8-cluster-based MOF as a Molecular Electrocatalyst for Alcohol Oxidation in Alkaline Media. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY 2023. [DOI: 10.1016/j.cjsc.2023.100018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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10
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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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Strasser JW, Crooks RM. Ethanol Electrooxidation at 1-2 nm AuPd Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4093. [PMID: 36432379 PMCID: PMC9692959 DOI: 10.3390/nano12224093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/13/2022] [Accepted: 11/16/2022] [Indexed: 06/16/2023]
Abstract
We report a systematic study of the electrocatalytic properties and stability of a series of 1-2 nm Au, Pd, and AuPd alloy nanoparticles (NPs) for the ethanol oxidation reaction (EOR). Following EOR electrocatalysis, NP sizes and compositions were characterized using aberration-corrected scanning transmission electron microscopy (ac-STEM) and energy dispersive spectroscopy (EDS). Two main findings emerge from this study. First, alloyed AuPd NPs exhibit enhanced electrocatalytic EOR activity compared to either monometallic Au or Pd NPs. Specifically, NPs having a 3:1 ratio of Au:Pd exhibit an ~8-fold increase in peak current density compared to Pd NPs, with an onset potential shifted ~200 mV more to the negative compared to Au NPs. Second, the size and composition of AuPd alloy NPs do not (within experimental error) change following 1.0 or 2.0 h chronoamperometry experiments, while monometallic Au NPs increase in size from 2 to 5 nm under the same conditions. Notably, this report demonstrates the importance of post-catalytic ac-STEM/EDS characterization for fully evaluating NP activity and stability, especially for 1-2 nm NPs that may change in size or structure during electrocatalysis.
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Guo J, Jiao S, Ya X, Zheng H, Wang R, Yu J, Wang H, Zhang Z, Liu W, He C, Fu X. Ultrathin Pd‐based Perforated Nanosheets for Fuel Cells Electrocatalysis. ChemElectroChem 2022. [DOI: 10.1002/celc.202200729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jingchun Guo
- West Anhui University Department of Experimental and Practical Teaching Management Yunlu Bridge 237012 Lu'an CHINA
| | - Shilong Jiao
- Henan University School of Materials, Key Lab for Special Functional Materials of Ministry of Education CHINA
| | - Xiuying Ya
- Wanxi College: West Anhui University Department of Experimental and Practical Teaching Management CHINA
| | - Huiling Zheng
- Wanxi College: West Anhui University Department of Experimental and Practical Teaching Management CHINA
| | - Ran Wang
- Wanxi College: West Anhui University Department of Experimental and Practical Teaching Management CHINA
| | - Jiao Yu
- Wanxi College: West Anhui University Department of Experimental and Practical Teaching Management CHINA
| | - Huanyu Wang
- Wanxi College: West Anhui University Department of Experimental and Practical Teaching Management CHINA
| | - Zhilin Zhang
- Wanxi College: West Anhui University Department of Experimental and Practical Teaching Management CHINA
| | - Wei Liu
- Wanxi College: West Anhui University Department of Experimental and Practical Teaching Management CHINA
| | - Congxiao He
- Wanxi College: West Anhui University Department of Experimental and Practical Teaching Management CHINA
| | - Xucheng Fu
- Wanxi College: West Anhui University Department of Experimental and Practical Teaching Management CHINA
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13
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Pd-Ru anchored on CaO derived from waste-eggshells for ethanol oxidation electrocatalysis. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Rodrigues MP, Dourado AH, Krischer K, Torresi SIC. Gold–rhodium nanoflowers for the plasmon enhanced ethanol electrooxidation under visible light for tuning the activity and selectivity. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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15
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Passive Small Direct Alcohol Fuel Cells for Low-Power Portable Applications: Assessment Based on Innovative Increments since 2018. ENERGIES 2022. [DOI: 10.3390/en15103787] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Passive small direct alcohol fuel cells (PS-DAFCs) are compact, standalone devices capable of electrochemically converting the chemical energy in the fuel/alcohol into electricity, with low pollutant emissions and high energy density. Thus, PS-DAFCs are extremely attractive as sustainable/green off-grid low-power sources (milliwatts to watts), considered as alternatives to batteries for small/portable electric and electronic devices. PS-DAFCs benefit from long life operation and low cost, assuring an efficient and stable supply of inherent non-polluting electricity. This review aims to assess innovations on PS-DAFC technology, as well as discuss the challenges and R&D needs covered on practical examples reported in the scientific literature, since 2018. Hence, this compilation intends to be a guidance tool to researchers, in order to help PS-DAFCs overcome the barriers to a broad market introduction and consequently become prime renewable energy converters and autonomous micropower generators. Only by translating research discoveries into the scale-up and commercialization process of the technology can the best balance between the economic and technical issues such as efficiency, reliability, and durability be achieved. In turn, this will certainly play a crucial role in determining how PS-DAFCs can meet pressing sustainable energy needs.
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16
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Yeh PH, Venkatesan S, Chen HC, Lee YL. In-Situ surface enhanced infrared absorption spectroscopy study of electrocatalytic oxidation of ethanol on Platinum/Gold surface. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 271:120902. [PMID: 35074672 DOI: 10.1016/j.saa.2022.120902] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 01/07/2022] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
The behavior of ethanol oxidation reaction on composite electrodes prepared by deposition platinum on a gold surface (Pt/Au) were studied by cyclic voltammetry and surface enhanced infrared absorption spectroscopy (SEIRAS) analysis. The results show that the Pt electrode has high oxidation activity and significant poison behavior; on the contrary, the Au electrode demonstrates low activity without a poison peak. The SEIRAS analyses reveal that both carbon monoxide (CO) and carbon dioxide (CO2) appear during anode sweeping, and the CO peak density decreases with increasing potential and finally is eliminated. During the cathodic scanning, the CO peak reappears, and the peak intensity increases with scanning cycles, demonstrating a high poison behavior and the C1 reaction route on Pt. On the Au electrode, CO2 and CO peaks were not observed; instead, an acetic acid peak appeared, indicating a C2 reaction path. For the Pt/Au composited electrodes, the electrochemical activities of the electrodes, as well as their poison behavior, increased with the deposition amount of Pt. However, the intensities of the poison peaks are smaller than those of oxidation ones; therefore, a higher tolerance to the CO poison can be achieved. For the 2 m-Pt/Au composite electrode, the activity is close to that of pure Pt, but the poison tolerance is 3 times the value of Pt.
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Affiliation(s)
- Po-Hsuan Yeh
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | | | - Hsiao-Chi Chen
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Yuh-Lang Lee
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan; Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 70101, Taiwan.
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17
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Some features of alcohols electrooxidation process on Pd, Rh and PdRh catalysts. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.139998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Arjona N, Espinosa‒Magaña F, Bañuelos JA, Álvarez‒Contreras L, Guerra‒Balcázar M. Manganese oxides (Mn3O4 & α‒MnO2) as co‒catalysts in Pd‒based nanomaterials for the ethylene glycol electro‒oxidation. ChemElectroChem 2022. [DOI: 10.1002/celc.202200015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Noé Arjona
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica Technology Parque Tecnológico Querétaro S/NSanFandila 76703 Pedro Escobedo MEXICO
| | - Francisco Espinosa‒Magaña
- Centro de Investigación en Materiales Avanzados SC: Centro de Investigacion en Materiales Avanzados SC NanoTech MEXICO
| | - Jennifer A. Bañuelos
- Instituto Mexicano de Tecnología del Agua: Instituto Mexicano de Tecnologia del Agua Agua MEXICO
| | - Lorena Álvarez‒Contreras
- Centro de Investigación en Materiales Avanzados SC: Centro de Investigacion en Materiales Avanzados SC Science MEXICO
| | - Minerva Guerra‒Balcázar
- Universidad Autónoma de Querétaro: Universidad Autonoma de Queretaro Facultad de Ingeniería MEXICO
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19
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Smina N, Rosen A, Sztaberek L, Beatrez W, Kingsbury K, Troia R, Wang Y, Zhao J, Schrier J, Koenigsmann C. Enhanced Electrocatalytic Oxidation of Small Organic Molecules on Platinum-Gold Nanowires: Influence of the Surface Structure and Pt-Pt/Pt-Au Pair Site Density. ACS APPLIED MATERIALS & INTERFACES 2021; 13:59892-59903. [PMID: 34890203 DOI: 10.1021/acsami.1c17244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The electrochemical oxidation of small organic molecules (SOMs) such as methanol and glucose is a critical process and has relevant applications in fuel cells and sensors. A key challenge in SOM oxidation is the poisoning of the surface by carbon monoxide (CO) and other partially oxidized intermediates, which is attributed to the presence of Pt-Pt pair sites. A promising pathway for overcoming this challenge is to develop catalysts that selectively oxidize SOMs via "direct" pathways that do not form CO as a primary intermediate. In this report, we utilize an ambient, template-based approach to prepare PtAu alloy nanowires with tunable compositions. X-ray photoelectron spectroscopy measurements reveal that the surface composition matches that of the bulk composition after synthesis. Monte Carlo method simulations of the surface structure of PtAu alloys with varying coverage of oxygen adsorbates and varying degrees of oxygen adsorption strength reveal that oxygen adsorption under electrochemical conditions enriches the surface with Pt and a large fraction of Pt-Pt sites remain on the surface even with the Au content of up to 50%. Electrochemical properties and the catalytic performance measurements of the PtAu nanowires for the oxidation of methanol and glucose reveal that the mechanistic pathways that produce CO are suppressed by the addition of relatively small quantities of Au (∼10%), and CO formation can be completely suppressed by 50% Au. The suppression of CO formation with small quantities of Au suggests that the presence of Pt-Au pair sites may be more important in determining the mechanism of SOM oxidation rather than Pt-Pt pair site density.
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Affiliation(s)
- Nicole Smina
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, New York 10458, United States
| | - Adam Rosen
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, New York 10458, United States
| | - Lukasz Sztaberek
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, New York 10458, United States
- Department of Environmental Control Technology, New York City College of Technology, 300 Jay Street, Brooklyn, New York 11201, United States
| | - William Beatrez
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, New York 10458, United States
| | - Kathryn Kingsbury
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, New York 10458, United States
| | - Rosario Troia
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, New York 10458, United States
| | - Yongchen Wang
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269-3060, United States
| | - Jing Zhao
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269-3060, United States
| | - Joshua Schrier
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, New York 10458, United States
| | - Christopher Koenigsmann
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, New York 10458, United States
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20
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Mxene coupled over nitrogen-doped graphene anchoring palladium nanocrystals as an advanced electrocatalyst for the ethanol electrooxidation. J Colloid Interface Sci 2021; 610:944-952. [PMID: 34863544 DOI: 10.1016/j.jcis.2021.11.142] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 11/23/2022]
Abstract
Development of good support materials is widely adopted as a valid strategy to fabricate high performance electrocatalysts for the ethanol oxidation reaction (EOR). In this study, the small diameter Ti3C2Tx MXene thin nanosheets inserted into three-dimensional nitrogen-doped grapheme (NG) was constructed via a facile hydrothermal method and employed as support materials for anchoring Pd nanocrystals (Pd/Ti3C2Tx@NG). The obtained-Pd/Ti3C2Tx@NG as EOR electrocatalyst in alkaline media outperforms the commercial Pd/C with better electrocatalytic activity, enhanced long-term stability and high CO tolerance. The Ti3C2Tx inserted into NG probably plays a key role for enhancing the properties of the synthesized-catalyst. Inserting Ti3C2Tx into NG allows the electrocatalysts to have high porosity, surface hydrophilicity, sufficient number of anchor sites for Pd nanocrystals and modifies its electronic properties, which can promote the electrocatalytic activity and durability. The enhanced EOR performance endows Pd/Ti3C2Tx@NG with great application potential in fuel cells as an anode catalyst. Furthermore, the prepared Ti3C2Tx@NG is also suitable in various desired applications, especially other oxidation reactions.
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21
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Li S, Liang X, Shen S, Yang H, Wu CML. Surface Engineering of Flower-Like Ionic Liquid-Functionalized Graphene Anchoring Palladium Nanocrystals for a Boosted Ethanol Oxidation Reaction. Inorg Chem 2021; 60:17388-17397. [PMID: 34709791 DOI: 10.1021/acs.inorgchem.1c02953] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of low-cost and high-performance electrocatalyst-supporting materials is desirable and necessary for the ethanol oxidation reaction (EOR). Here, we report a facile and universal template-free approach for the first time to synthesize three-dimensional (3D) flower-like ionic liquid-functionalized graphene (IL-RGO). Then, the crystalline Pd nanoparticles were anchored on IL-RGO by a simple wet chemical growth method without a surfactant (denoted as Pd/IL-RGO). In particular, the IL is conducive to form a 3D flower-like structure. The optimized Pd/IL-RGO-2 presents a much-promoted electrocatalytic performance toward the EOR compared with commercial Pd/C catalysts, which is mainly derived from the grafted IL on RGO and the unique 3D flower-like structure. In detail, the IL can control, stabilize, and disperse the Pd nanocrystals as well as serving as the solvent and electrolyte in the microenvironment of the EOR, and the 3D flower-like structure endows the Pd/IL-RGO with high surface areas and rich opened channels, thereby kinetically accelerating the charge/mass transfers. Furthermore, density functional theory calculations reveal that the strong electronic interaction between Pd and IL-RGO generates a downshift of dcenter for Pd and thereby enhances the durability toward CO-like intermediates and electrocatalytic reaction kinetics.
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Affiliation(s)
- Shuwen Li
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xiongyi Liang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR 999077, China
| | - Sihao Shen
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Honglei Yang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Chi-Man Lawrence Wu
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR 999077, China
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22
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Chen Z, Yu B, Cao J, Wen X, Luo M, Xing S, Chen D, Feng C, Huang G, Jin Y. High-performance Pd nanocatalysts based on the novel N-doped Ti3C2 support for ethanol electrooxidation in alkaline media. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138902] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Wang Z, Wang L, Zhu W, Zeng T, Wu W, Lei Z, Tan Y, Lv H, Cheng N. Pt 3Sn nanoparticles enriched with SnO 2/Pt 3Sn interfaces for highly efficient alcohol electrooxidation. NANOSCALE ADVANCES 2021; 3:5062-5067. [PMID: 36132342 PMCID: PMC9419862 DOI: 10.1039/d1na00314c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 07/02/2021] [Indexed: 06/15/2023]
Abstract
Pt3Sn nanoparticles (NPs) enriched with Pt3Sn/ultra-small SnO2 interfaces (Pt3Sn@u-SnO2/NG) were synthesized through a thermal treatment of Pt2Sn/NG in a H2 atmosphere, followed by annealing under H2 and air conditions. The unique structure of Pt3Sn NPs enriched with Pt3Sn/SnO2 interfaces was observed on the Pt3Sn@u-SnO2/NG catalyst based on HRTEM. The optimized Pt3Sn@u-SnO2/NG catalyst achieves high catalytic activity with an ethanol oxidation reaction (EOR) activity of 366 mA mgPt -1 and a methanol oxidation reaction (MOR) activity of 503 mA mgPt -1 at the potential of 0.7 V, which are eight-fold and five-fold higher than those for the commercial Pt/C catalyst (44 and 99 mA mgPt -1, respectively). The Pt3Sn@u-SnO2/NG catalyst is found to be 3 times more stable and have higher CO tolerance than Pt/C. The outstanding performance of the Pt3Sn@u-SnO2/NG catalyst should be ascribed to the synergetic effect induced by the unique structure of Pt3Sn NPs enriched with Pt3Sn/SnO2 interfaces. The synergetic effect between Pt3Sn NPs and ultra-small SnO2 increases the performance for alcohol oxidation because the Sn in both Pt3Sn and SnO2 favors the removal of COads on the nearby Pt by providing OHads species at low potentials. The present work suggests that the Pt3Sn@u-SnO2 is indeed a unique kind of efficient electrocatalyst for alcohol electrooxidation.
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Affiliation(s)
- Zichen Wang
- College of Materials Science and Engineering, Fuzhou University Fuzhou 350108 Fujian China
| | - Liang Wang
- College of Materials Science and Engineering, Fuzhou University Fuzhou 350108 Fujian China
| | - Wangbin Zhu
- College of Materials Science and Engineering, Fuzhou University Fuzhou 350108 Fujian China
| | - Tang Zeng
- College of Materials Science and Engineering, Fuzhou University Fuzhou 350108 Fujian China
| | - Wei Wu
- College of Materials Science and Engineering, Fuzhou University Fuzhou 350108 Fujian China
| | - Zhao Lei
- College of Materials Science and Engineering, Fuzhou University Fuzhou 350108 Fujian China
| | - Yangyang Tan
- College of Materials Science and Engineering, Fuzhou University Fuzhou 350108 Fujian China
| | - Haifeng Lv
- PEM Fuel Cell Catalyst Research and Development Center Shenzhen Guangdong 518057 China
- Materials Science Division, Argonne National Laboratory Argonne IL 60439 USA
| | - Niancai Cheng
- College of Materials Science and Engineering, Fuzhou University Fuzhou 350108 Fujian China
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24
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Mei Y, Deskins NA. An evaluation of solvent effects and ethanol oxidation. Phys Chem Chem Phys 2021; 23:16180-16192. [PMID: 34297022 DOI: 10.1039/d1cp00630d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding liquid-metal interfaces in catalysis is important, as the liquid can speed up surface reactions, increase the selectivity of products, and open up new favorable reaction pathways. In this work we modeled using density functional theory various steps in ethanol oxidation/decomposition over Rh(111). We considered implicit (continuum), explicit, and hybrid (implicit combined with explicit) solvation approaches, as well as two solvents, water and ethanol. We focused on modeling adsorption steps, as well as C-C/C-H bond scission and C-O bond formation reactions. Implicit solvation had very little effect on adsorption and reaction free energies. However, using the explicit and hybrid models, some free energies changed significantly. Furthermore, ethanol solvent had a more considerable impact than water solvent. We observed that preferred reaction pathways for C-C scission changed depending on the solvation model and solvent choice (ethanol or water). We also applied the bond-additivity solvation method to calculate heats of adsorption. Heats of adsorption and reaction using the bond-additivity model followed the same trends as the other solvation models, but were ∼1.1 eV more endothermic. Our work highlights how different solvation approaches can influence analysis of the oxidation/decomposition of organic surface species.
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Affiliation(s)
- Yuhan Mei
- Department of Chemical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, Massachusetts 01609, USA.
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25
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A comparative study of Pd/rGO and Pd–Cu/rGO toward electrooxidation of low ethanol concentrations for fuel cell-based breath alcohol analyzer application. J APPL ELECTROCHEM 2021. [DOI: 10.1007/s10800-021-01595-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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26
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Vu THT, Nguyen TT, Nguyen TH, Nguyen MD, Nguyen QM. A new method for synthesizing high performance few-layer graphene supported Pt electrocatalysts in methanol and ethanol oxidation. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138258] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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27
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Wang B, Cheng Y, Su H, Cheng M, Li Y, Geng H, Dai Z. Boosting Transport Kinetics of Cobalt Sulfides Yolk-Shell Spheres by Anion Doping for Advanced Lithium and Sodium Storage. CHEMSUSCHEM 2020; 13:4078-4085. [PMID: 32538543 DOI: 10.1002/cssc.202001261] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Indexed: 06/11/2023]
Abstract
Cobalt sulfides have been popularly used in energy storage because of their high theoretical capacity and abundant redox reactions. However, poor reaction kinetics, rapid capacity decay, and severe polarization owing to volume changes during electrochemical reaction are still huge challenges for cobalt sulfides in practical applications. Herein, cobalt sulfide yolk-shell spheres were synthesized by phosphorus doping (P-CoS) to stabilize the structure of cobalt sulfides and improve their electronic/ion conductivity. Kinetic tests and density functional theory calculations confirm that the introduction of phosphorus into cobalt sulfides greatly reduces the diffusion barrier of Li+ in the intrinsic structure, thereby improving the reaction kinetics of electrode materials during the Li+ insertion/extraction process. In consequence, the P-CoS electrode delivers a high lithium storage capacity (781 mAh g-1 after 100 cycles at 0.2 A g-1 ), excellent rate capability (489 mAh g-1 at 10 A g-1 ), and outstanding cycling stability (no significant capacity decay over 4000 cycles at 5 A g-1 ). Especially for sodium-ion battery application, the P-CoS electrode expresses a striking capacity of approximately 260 mAh g-1 at 2 A g-1 after 900 cycles.
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Affiliation(s)
- Bo Wang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, P.R. China
| | - Yafei Cheng
- School of Materials Engineering, Changshu Institute of Technology, Changshu, Jiangsu, 215500, P.R. China
| | - Hao Su
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, P.R. China
| | - Min Cheng
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, P.R. China
| | - Yan Li
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, P.R. China
| | - Hongbo Geng
- School of Materials Engineering, Changshu Institute of Technology, Changshu, Jiangsu, 215500, P.R. China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Zhengfei Dai
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, P.R. China
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28
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Bismuth as Smart Material and Its Application in the Ninth Principle of Sustainable Chemistry. J CHEM-NY 2020. [DOI: 10.1155/2020/9802934] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
This paper reports an overview of Green Chemistry and the concept of its twelve principles. This study focusses on the ninth principle of Green Chemistry, that is, catalysis. A report on catalysis, in line with its definition, background, classification, properties, and applications, is provided. The study also entails a green element called bismuth. Bismuth’s low toxicity and low cost have made researchers focus on its wide applications in catalysis. It exhibits smartness in all the catalytic activities with the highest catalytic performance among other metals.
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29
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Luo Q, Zhao Y, Qi Y, Xin H, Wang C, Chen G, Sun J, Liu M, Xu K, Ma F. Plasma-assisted nitrogen doping in Ni-Co-P hollow nanocubes for efficient hydrogen evolution electrocatalysis. NANOSCALE 2020; 12:13708-13718. [PMID: 32573583 DOI: 10.1039/d0nr01783c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
To surmount the issues of a limited specific surface area and slow electrolyte diffusion in composite electrocatalysts, three-dimensional (3D) porous hollow nanocubes are fabricated, in which bimetal Ni-Co phosphide composites are covered with nanoparticles. The abundant hollow space provides more active sites for the catalyst, and simultaneously ensures efficient mass transfer and electron transport during the hydrogen evolution reaction (HER). A plasma-assisted approach is employed for smart N-doping in the Ni-Co phosphide hollow nanocubes (N-Ni-Co-P HNCs). The N-Ni-Co-P HNC catalyst exhibits a remarkable HER performance in 1 M KOH, evidenced by the low overpotentials of 47.9 mV and 150.5 mV at the current density of 10 mA cm-2 and 50 mA cm-2, respectively, as well as the excellent long-time stability. Essentially, the N doping tailors the electronic states and optimizes the free energy of hydrogen adsorption (ΔGH*) greatly, and the 3D porous hollow structure with porous nanoparticles stacked enlarges the specific active area substantially. Their synergistic effects result in the remarkably enhanced catalytic activity for the HER.
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Affiliation(s)
- Qiaomei Luo
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China.
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30
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Wang C, Yang Q, Qin G, Xiao Y, Duan J. Unveiling a bimetallic FeCo-coupled MoS 2 composite for enhanced energy storage. NANOSCALE 2020; 12:10532-10542. [PMID: 32167513 DOI: 10.1039/d0nr00033g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Sodium and potassium-ion batteries are promising for energy storage owing to their source abundance and low cost; however, most active materials still suffer from sluggish kinetics, huge volume variations, and poor conductivity and cycle stability. It remains a great challenge to explore appropriate electrode materials for scaled practical applications. Herein, mesoporous FeCo-incorporated MoS2 nanosheets encapsulated into a porous carbon framework (FeCo@C@MoS2) are smartly designed, artistically fabricated and evaluated for sodium and potassium storage. The FeCo@C@MoS2 electrode displays high reversible capacities of 380 mA h g-1 and 147 mA h g-1 at 500 mA g-1 for sodium and potassium storage, respectively. FeCo derived from a Prussian blue analogue promotes fast reaction kinetics of Na+/K+ transport, introduces the formation of a stable solid electrolyte interphase layer (SEI) in both the interior and exterior of the cube-like porous nanostructure and controls the Na+/K+ fluxes, suppressing the growth of metal dendrites. The porous carbon framework with large interstitial voids can effectively buffer volume variations and mitigate mechanical stress, contributing significantly to alleviate strain intensification on the surface layer between MoS2 and FeCo during repeated plating/stripping processes. Density functional theoretical calculations (DFT) further confirm that the synthesized nanostructure shows an intensified electron state, elevated anti-stress ability, high-quality SEI film and preferable Na+/K+ adsorption energies. This in-depth investigation of the electrochemical performance and the extended energy storage mechanism based on metal alloy/sulfide nanostructures for sodium and potassium storage provides guidance for the smart design of heterojunctions for remarkable energy storage.
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Affiliation(s)
- Chengyang Wang
- School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, PR China
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31
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Liang T, Liu Y, Cheng Y, Ma F, Dai Z. Scalable Synthesis of a MoS
2
/Black Phosphorus Heterostructure for pH‐Universal Hydrogen Evolution Catalysis. ChemCatChem 2020. [DOI: 10.1002/cctc.202000139] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tingting Liang
- State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 P.R. China
| | - Yaoda Liu
- State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 P.R. China
| | - Yize Cheng
- State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 P.R. China
| | - Fei Ma
- State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 P.R. China
| | - Zhengfei Dai
- State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 P.R. China
- State Key Laboratory for Powder Metallurgy Central South University Changsha 410083 P.R. China
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32
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Ethanol Electrooxidation at Platinum-Rare Earth (RE = Ce, Sm, Ho, Dy) Binary Alloys. ENERGIES 2020. [DOI: 10.3390/en13071658] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Proton exchange membrane fuel cells and direct alcohol fuel cells have been extensively studied over the last three decades or so. They have emerged as potential systems to power portable applications, providing clean energy, and offering good commercial viability. Ethanol is considered one of the most interesting fuels in this field. Herein, platinum-rare earth (Pt-RE) binary alloys (RE = Ce, Sm, Ho, Dy, nominal composition 50 at.% Pt) were produced and studied as anodes for ethanol oxidation reaction (EOR) in alkaline medium. A Pt-Dy alloy with nominal composition 40 at.% Pt was also tested. Their electrocatalytic performance was evaluated by voltammetric and chronoamperometric measurements in 2 M NaOH solution with different ethanol concentrations (0.2–0.8 M) in the 25–45 °C temperature range. Several EOR kinetic parameters were determined for the Pt-RE alloys, namely the charge transfer and diffusion coefficients, and the number of exchanged electrons. Charge transfer coefficients ranging from 0.60 to 0.69 and n values as high as 0.7 were obtained for the Pt0.5Sm0.5 electrode. The EOR reaction order at the Pt-RE alloys was found to vary between 0.4 and 0.9. The Pt-RE electrodes displayed superior performance for EOR than bare Pt, with Pt0.5Sm0.5 exhibiting the highest electrocatalytic activity. The improved electrocatalytic activity in all of the evaluated Pt-RE binary alloys suggests a strategy for the solution of the existing anode issues due to the structure-sensitive EOR.
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Xie A, Zhang Q, He H, Peng C. Facile synthesis of PdAg nanocatalysts on CeO 2/C composite supports as high-performance catalysts toward alkaline ethanol electro-oxidation. NEW J CHEM 2020. [DOI: 10.1039/d0nj03757e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PdAg nanocatalysts on CeO2/C supports were prepared using a facile, environment-friendly method and exhibited superior performance for ethanol electro-oxidation.
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Affiliation(s)
- Ayong Xie
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Qing Zhang
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Huiqing He
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Cheng Peng
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
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