1
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Gao J, Wu X, Teng X, Zhang K, Zhao H, Li J, Zhang J. Thermal-Driven Orderly Assembly of Ir-atomic Chains on α-MnO 2 with Enhanced Performance for Acidic Oxygen Evolution. Chempluschem 2024; 89:e202300680. [PMID: 38263338 DOI: 10.1002/cplu.202300680] [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: 11/22/2023] [Revised: 01/11/2024] [Accepted: 01/22/2024] [Indexed: 01/25/2024]
Abstract
The development of acid-stable oxygen evolution reaction electrocatalysts is essential for high-performance acidic water electrolysis. Herein, we report the results of one-dimensional (1D) nanorods (NRs) IrCeMnO@Ir containing ~20 wt . % Iridium (Ir) as an efficient anode electrocatalyst, synthesized via a one-step cation exchange strategy. Owing to the presence of 1D channels of the nanorod architecture and the unique electronic structure, the IrCeMnO@Ir exhibited 69 folds more mass activity than that of commercial IrO2 as well as over 400 h stability with only a 20 mV increase in overpotential. DFT calculations and control experiments demonstrated that CeO2 serves as an electron buffer to accelerate the kinetics of the rate-determined step for the significantly enhanced activity and suppress the over-oxidation of Ir species as well as their dissolution for impressively promoted stability under practical conditions. Our work opens up a feasible strategy to boost OER activity and stability simultaneously.
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Affiliation(s)
- Junan Gao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Xiaokuan Wu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Xin Teng
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Kuo Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Hong Zhao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Jianwei Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Jie Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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2
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Li D, Ha E, Zhou Z, Zhang J, Zhu Y, Ai F, Yan L, He S, Li L, Hu J. "Spark" PtMnIr Nanozymes for Electrodynamic-Boosted Multienzymatic Tumor Immunotherapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2308747. [PMID: 38108600 DOI: 10.1002/adma.202308747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/10/2023] [Indexed: 12/19/2023]
Abstract
Multienzyme-mimicking redox nanozymes capable of efficient reactive oxygen species (ROS) generation and cellular homeostasis disruption are highly pursued for cancer therapy. However, it still faces challenges from the complicate tumor microenvironment (TME) and high chance for tumor metastasis. Herein, well-dispersed PtMnIr nanozymes are designed with multiple enzymatic activities, including catalase (CAT), oxidase (OXD), superoxide dismutase (SOD), peroxidase (POD), and glutathione peroxidase (GPx), which continuously produce ROS and deplete glutathione (GSH) concurrently in an "inner catalytic loop" way. With the help of electrodynamic stimulus, highly active "spark" species (Ir3+ and Mn3+ ) are significantly increased, resulting in an effective cascade enzymatic and electrodynamic therapy. Moreover, the cyclic generation of ROS can also facilitate ferroptosis and apoptosis in tumor cells, boosting synergistic therapy. Importantly, lung metastasis inhibition is found, which confirms efficient immunotherapy by the combined effect of immunogenic cell death (ICD) and Mn2+ -induced cyclic guanosine monophosphate (GMP)-adenosine monophosphate (AMP) synthase (cGAS)-stimulator of interferon genes (cGAS-STING) pathway, contributing great potential in the treatment of malignant tumors.
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Affiliation(s)
- Danyang Li
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118, P. R. China
| | - Enna Ha
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118, P. R. China
| | - Zhenli Zhou
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118, P. R. China
| | - Jingge Zhang
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118, P. R. China
| | - Yaoyao Zhu
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118, P. R. China
| | - Fujin Ai
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118, P. R. China
| | - Li Yan
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118, P. R. China
| | - Shuqing He
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118, P. R. China
| | - Lei Li
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Junqing Hu
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118, P. R. China
- Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen, 518132, P. R. China
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3
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Yang L, Li Z, Chen C, Wang J, Yin Q, Zhang Y, Guo P. Assembly of Alloyed PdM (Ag, Cu, and Sn) Nanosheets and Their Electrocatalytic Oxidation of Ethanol and Methanol. Inorg Chem 2023; 62:15320-15328. [PMID: 37669563 DOI: 10.1021/acs.inorgchem.3c02558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Direct alcohol fuel cells are popular due to their high energy density, abundant sources, and ease of transportation and storage. Palladium-based nanosheet self-assembled materials have emerged as an effective catalyst for alcohol oxidation reactions. In this work, nanosheets were synthesized with the same feeding ratio assembly of alloyed PdM (M = Ag, Cu, and Sn). The introduction of the second element was able to enhance the catalytic response of the catalysts to alcohol electrooxidation. Among them, the PdCu alloy exhibited the best performance in terms of catalytic activity, toxicity resistance, and stability to ethanol oxidation reaction (EOR) and methanol oxidation reaction (MOR). The catalytic current densities for EOR can reach 2226, 2518, and 1598 mA mg-1 for PdAg, PdCu, and PdSn nanosheet assemblies, respectively. These are mainly attributed to better electronic effects, altered atomic distances within the cell for the d-band centers of Pd, and a larger electrochemical active surface area (ECSA). The optimized d-band center is beneficial to promote the catalytic performance of EOR and MOR. Experimental data also demonstrated that higher electrocatalytic temperature, higher pH, and higher alcohol concentration can accelerate the rate of alcohol electrooxidation. These results have the potential to be extended to Pd-M (M = other metals) nanosheets and help for a wider range of catalytic applications.
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Affiliation(s)
- Likang Yang
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Ze Li
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Chen Chen
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Jiasheng Wang
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Qizhi Yin
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Yuxiang Zhang
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Peizhi Guo
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
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4
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Zhang L, Zhang J, Tan W, Zhong C, Tu Y, Song H, Du L, Liao S, Cui Z. Amorphous TiO x Stabilized Intermetallic Pt 3Ti Nanocatalyst for Methanol Oxidation Reaction. NANO LETTERS 2023. [PMID: 37276263 DOI: 10.1021/acs.nanolett.3c01147] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Intermetallic compounds, featuring atomically ordered structures, have emerged as a class of promising electrocatalysts for fuel cells. However, it remains a formidable challenge to controllably synthesize Pt-based intermetallics during the essential high-temperature annealing process as well as stabilize the nanoparticles (NPs) during the electrocatalytic process. Herein, we demonstrated a Ketjen black supported intermetallic Pt3Ti nanocatalyst coupled with amorphous TiOx species (Pt3Ti-TiOx/KB). The TiOx can not only confine Pt3Ti NPs during the synthesis and electrocatalytic process by a strong metal-oxide interaction but also promote the water dissociation for generating more OH species, thus facilitating the conversion of COad. The Pt3Ti-TiOx/KB showed a significantly enhanced mass activity (2.15 A mgPt-1) for the methanol oxidation reaction, compared with Pt3Ti/KB and Pt/C, and presented an impressively high mass activity retention (∼71%) after the durability test. This work provides an effective strategy of coupling Pt-based intermetallics with functional oxides for developing highly performed electrocatalysts.
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Affiliation(s)
- Longhai Zhang
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Jiaxi Zhang
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Weiquan Tan
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Chengzhi Zhong
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Yuanhua Tu
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Huiyu Song
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Li Du
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Shijun Liao
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Zhiming Cui
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
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5
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Deshpande P, Prasad BLV. Alloying with Mn Enhances the Activity and Durability of the CoPt Catalyst toward the Methanol Oxidation Reaction. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37224303 DOI: 10.1021/acsami.3c01140] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
To improve the catalytic performance and durability of Pt catalysts used for the methanol oxidation reaction (MOR) in direct methanol fuel cells (DMFCs), alloying of Pt with other transition metals such as Ru, Co, Ni, and Fe is considered an effective approach. Despite the significant progress made in the preparation of bimetallic alloys and their utilization for MOR, improving the activity and durability of the catalysts to make them commercially viable remains a stiff challenge. In this work, trimetallic Pt100-x(MnCo)x (16 < x < 41) catalysts were successfully synthesized via borohydride reduction followed by hydrothermal treatment at 150 °C. The electrocatalytic performance of the synthesized trimetallic Pt100-x(MnCo)x (16 < x < 41) catalysts toward MOR was studied using cyclic voltammetry and chronoamperometry. The results affirm that all Pt100-x(MnCo)x (16 < x < 41) alloys have superior MOR activity and durability as compared to bimetallic PtCo alloys and commercially available Pt/C (comm. Pt/C) catalysts. Among all the compositions studied, the Pt60Mn1.7Co38.3/C catalyst exhibited superior mass activity (1.3 and 1.9 times higher than those of Pt81Co19/C and comm. Pt/C, respectively) toward MOR. Furthermore, all the newly synthesized Pt100-x(MnCo)x/C (16 < x < 41) catalysts showed better CO tolerance when compared with comm. Pt/C. This improved performance of the Pt100-x(MnCo)x/C (16 < x < 41) catalyst can be attributed to the synergistic effect of Co and Mn on the Pt lattice.
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Affiliation(s)
- Pooja Deshpande
- Physical and Materials Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovation Research (AcSIR), Ghaziabad 201002, India
| | - Bhagavatula L V Prasad
- Physical and Materials Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovation Research (AcSIR), Ghaziabad 201002, India
- Centre for Nano and Soft Matter Sciences, Arkavathi, Survey No.7 Shivanapura, Dasanapura Hobli, Bengaluru 562162, India
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6
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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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7
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Huang X, He ZL, Chen Y, Xu Q, Zhu M, Zhai C. Self-standing three-dimensional PdAu nanoflowers for plasma-enhanced photo-electrocatalytic methanol oxidation with a CO-free dominant mechanism. J Colloid Interface Sci 2022; 625:850-858. [DOI: 10.1016/j.jcis.2022.06.108] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/16/2022] [Accepted: 06/21/2022] [Indexed: 01/19/2023]
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8
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Zhong Y, Wu Z, Liu X, Li L. Prismatic Al-MOF composite rGO immobilized PdBiMn alloy catalyst for facilitating ethylene glycol electrooxidation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Hu J, Fang C, Jiang X, Zhang D, Cui Z. Ultrathin and Porous 2D PtPdCu Nanoalloys as High-Performance Multifunctional Electrocatalysts for Various Alcohol Oxidation Reactions. Inorg Chem 2022; 61:9352-9363. [PMID: 35674700 DOI: 10.1021/acs.inorgchem.2c01257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We precisely synthesized two-dimensional (2D) PtPdCu nanostructures with the morphology varying from porous circular nanodisks (CNDs) and triangular nanoplates (TNPs) to triangular nanoboomerangs (TNBs) by tuning the molar ratios of metal precursors. The PtPdCu trimetallic nanoalloys exhibit superior electrocatalytic performances to alcohol oxidation reactions due to their unique structural features and the synergistic effect. Impressively, PtPdCu TNBs exhibit a high mass activity of 3.42 mgPt+Pd-1 and 1.06 A·mgPt-1 for ethanol and methanol oxidation compared to PtPd, PtCu, and pure Pt, which is 3.93 and 4.07 times that of commercial Pt/C catalysts, respectively. Moreover, 2D PtPdCu TNPs and PtPdCu CNDs also show a highly improved electrocatalytic activity. Furthermore, as all-in-one electrocatalysts, PtPdCu nanoalloys display excellent electrocatalytic activity and stability toward the oxidation of other alcohol molecules, such as isopropyl alcohol, glycerol, and ethylene glycol. The enhanced mechanism was well proposed to be the abundant active sites and upshifted d-band center based on density functional theory calculations.
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Affiliation(s)
- Jinwu Hu
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Center for Nano Science and Technology, Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Normal University, Wuhu 241000, China
| | - Caihong Fang
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Center for Nano Science and Technology, Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Normal University, Wuhu 241000, China
| | - Xiaomin Jiang
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Center for Nano Science and Technology, Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Normal University, Wuhu 241000, China
| | - Deliang Zhang
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Center for Nano Science and Technology, Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Normal University, Wuhu 241000, China
| | - Zhiqing Cui
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Center for Nano Science and Technology, Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Normal University, Wuhu 241000, China
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10
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Zhu R, Yu Y, Yu R, Lai J, Chung-Yen Jung J, Zhang S, Zhao Y, Zhang J, Xia Z. PtIrM (M = Ni, Co) jagged nanowires for efficient methanol oxidation electrocatalysis. J Colloid Interface Sci 2022; 625:493-501. [PMID: 35749844 DOI: 10.1016/j.jcis.2022.06.060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/04/2022] [Accepted: 06/14/2022] [Indexed: 01/07/2023]
Abstract
It remains a huge challenge to develop methanol oxidation electrocatalysts with remarkable catalytic activity and anti-CO poisoning capability. Herein, PtIrNi and PtIrCo jagged nanowires are successfully synthesized via a facile wet-chemical approach. Pt and Ir components are concentrated in the exterior and Ni is concentrated in the interior of PtIrNi jagged nanowires, while PtIrCo jagged nanowires feature the homogeneous distribution of constituent metals. The PtIrNi and PtIrCo jagged nanowires exhibit mass activities of 1.88 A/mgPt and 1.85 A/mgPt, respectively, 3.24 and 3.19 times higher than that of commercial Pt/C (0.58 A/mgPt). In-situ Fourier transform infrared spectroscopy indicates that CO2 was formed at a very low potential for both nanowires, in line with the high ratio of forward current density to backward current density for PtIrNi jagged nanowires (1.30) and PtIrCo jagged nanowires (1.46) relative to Pt/C (0.76). Also, the CO stripping and X-ray photoelectron spectroscopy results substantiate the remarkable CO tolerance of the jagged nanowires. Besides, the two jagged nanowires possess exceptional activities toward ethanol and ethylene glycol oxidation reactions. This work provides a novel line of thought in terms of rational design of alcohol oxidation electrocatalysts with distinctive nanostructures.
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Affiliation(s)
- Rongying Zhu
- Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Yaodong Yu
- College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Renqin Yu
- Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Jianping Lai
- College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Joey Chung-Yen Jung
- Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai 200444, China.
| | - Shiming Zhang
- Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai 200444, China.
| | - Yufeng Zhao
- 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
| | - Zhonghong Xia
- Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai 200444, China.
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11
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Recent advances in one-dimensional noble-metal-based catalysts with multiple structures for efficient fuel-cell electrocatalysis. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214244] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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12
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Zhang B, Zhang X, Yan J, Cao Z, Pang M, Chen J, Zang L, Guo P. Synthesis of Free‐Standing Alloyed PdSn Nanoparticles with Enhanced Catalytic Performance for Ethanol Electrooxidation. ChemElectroChem 2021. [DOI: 10.1002/celc.202101242] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ben Zhang
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Xingxue Zhang
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Jie Yan
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Zhengshuai Cao
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Mingyuan Pang
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Jianyu Chen
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Lei Zang
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Peizhi Guo
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
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13
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Yang B, Qin T, Bao Z, Lu W, Dong J, Bin D, Lu H. Synthesis of SDS-Modified Pt/Ti 3C 2T x Nanocomposite Catalysts and Electrochemical Performance for Ethanol Oxidation. NANOMATERIALS 2021; 11:nano11123174. [PMID: 34947522 PMCID: PMC8703315 DOI: 10.3390/nano11123174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/12/2021] [Accepted: 11/22/2021] [Indexed: 11/16/2022]
Abstract
It is well-known that platinum (Pt) is still the preferred material of anode catalyst in ethanol oxidation, however, the prohibitive high cost and CO poisoning of Pt metal impede the commercialization of fuel cells. Therefore, improving the utilization rate of catalysts and reduce the cost of catalyst become one of the most concerned focus in the construction of fuel cells. In this work, the Pt-based catalysts are synthesized by using different content of sodium dodecyl sulfate (SDS) modified-Ti3C2Tx support, and the dispersion regulation function of SDS modified-Ti3C2Tx supported on Pt nanoparticles is investigated. The structure, composition and morphology of different catalysts are characterized by X-ray diffraction (XRD), X-ray spectroscopy (EDX), transmission electron microscopy (TEM) and high-resolution TEM, respectively. It is found that the Pt nanoparticles in pure Ti3C2Tx surface are serious aggregated and show poor dispersion, whereas the Pt nanoparticles in SDS modified-Ti3C2Tx have a better dispersion. The electrochemical results revealed that SDS modified-Ti3C2Tx supported Pt nanoparticles has higher electrocatalytic activity and stability in both acidic and alkaline ethanol oxidation when the dosage of SDS increases to 100 mg. These findings indicate that the SDS-Ti3C2Tx/Pt catalysts show a promising future of potential applications in fuel cells with modification of Ti3C2Tx support.
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Affiliation(s)
- Beibei Yang
- Department of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (B.Y.); (T.Q.); (Z.B.); (W.L.)
| | - Tian Qin
- Department of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (B.Y.); (T.Q.); (Z.B.); (W.L.)
| | - Ziping Bao
- Department of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (B.Y.); (T.Q.); (Z.B.); (W.L.)
| | - Wenqian Lu
- Department of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (B.Y.); (T.Q.); (Z.B.); (W.L.)
| | - Jiayu Dong
- Institute of Materials Engineering, National Laboratory of Solid State Microstructures, College of Engineering and Applied Science, Nanjing University, Nanjing 210093, China;
| | - Duan Bin
- Department of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (B.Y.); (T.Q.); (Z.B.); (W.L.)
- Correspondence: (D.B.); (H.L.)
| | - Hongbin Lu
- Department of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (B.Y.); (T.Q.); (Z.B.); (W.L.)
- Correspondence: (D.B.); (H.L.)
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14
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Zang L, Yan J, Pang M, Zhang B, Chen J, Guo P. Enhanced Electrocatalytic Activity of Alloyed Palladium-Lead Nanoparticles toward Electrooxidation of Ethanol. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:13132-13140. [PMID: 34714658 DOI: 10.1021/acs.langmuir.1c02324] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Although many researchers have made great efforts to pursue promising high-efficiency electrocatalysts, a formidable challenge remains for designing excellent palladium-based electrocatalysts for commercializing direct liquid fuel cells. This study reports the synthesis of bimetallic PdPb nanoparticles (NPs) via a mixed solution containing cetyl trimethyl ammonium bromide as the capping agent. Alloyed PdPb NPs are formed, where the size of the NPs increases as Pb atoms are introduced gradually. However, Pd3Pb NPs are obtained with the same molar ratio of Pd and Pb in the raw systems. Among all of the as-made NPs, Pd9Pb1 NPs exhibit superior catalytic activity (2620 mA mg-1) toward ethanol electrooxidation, 4.3 times higher than commercial Pd/C catalysts (613 mA mg-1). The overall rate of the EOR for PdPb NPs is determined, demonstrating that the electrocatalytic activity of the PdPb NPs increases at high catalytic temperatures, in high pH environments, and/or at high ethanol concentrations.
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Affiliation(s)
- Lei Zang
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Jie Yan
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Mingyuan Pang
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Ben Zhang
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Jianyu Chen
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Peizhi Guo
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
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15
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Gao F, Zhang Y, Wu Z, You H, Du Y. Universal strategies to multi-dimensional noble-metal-based catalysts for electrocatalysis. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213825] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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16
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Wang Y, Yuan Y, Huang H. Recent Advances in
Pt‐Based
Ultrathin Nanowires: Synthesis and Electrocatalytic Applications
†. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000714] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yu Wang
- College of Materials Science and Engineering, Hunan University Changsha Hunan 410082 China
| | - Yuliang Yuan
- College of Materials Science and Engineering, Hunan University Changsha Hunan 410082 China
| | - Hongwen Huang
- College of Materials Science and Engineering, Hunan University Changsha Hunan 410082 China
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17
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Peng K, Zhang W, Bhuvanendran N, Ma Q, Xu Q, Xing L, Khotseng L, Su H. Pt-based (Zn, Cu) nanodendrites with enhanced catalytic efficiency and durability toward methanol electro-oxidation via trace Ir-doping engineering. J Colloid Interface Sci 2021; 598:126-135. [PMID: 33895534 DOI: 10.1016/j.jcis.2021.04.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 04/01/2021] [Accepted: 04/05/2021] [Indexed: 11/29/2022]
Abstract
Pt-based alloy nanomaterials with nanodendrites (NDs) structures are efficient electrocatalysts for methanol oxidation reaction (MOR), however their durability is greatly limited by the issue of transition metals dissolution. In this work, a facile trace Ir-doping strategy was proposed to fabricate Ir-PtZn and Ir-PtCu alloy NDs catalysts in aqueous medium, which significantly improved the electrocatalytic activity and durability for MOR. The as-prepared Ir-PtZn/Cu NDs catalysts showed distinct dendrites structures with the averaged diameter of 4.1 nm, and trace Ir doping subsequently improved the utilization of Pt atoms and promoted the oxidation efficiency of methanol. The electrochemical characterizations further demonstrated that the obtained Ir-PtZn/Cu NDs possessed enhanced mass activities of nearly 1.23 and 1.28-fold higher than those of undoped PtZn and PtCu, and approximately 2.35 and 2.67-fold higher than that of Pt/C in acid medium. More excitingly, after long-term durability test, the proposed Ir-PtZn and Ir-PtCu NDs still retained about 88.9% and 91.6% of its initial mass activities, which further highlights the key role of Ir-doping in determining catalyst performance. This work suggests that trace Ir-doping engineering could be a promising way to develop advanced electrocatalysts toward MOR for direct methanol fuel cell (DMFC) applications.
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Affiliation(s)
- Kai Peng
- Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China
| | - Weiqi Zhang
- Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China
| | | | - Qiang Ma
- Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China
| | - Qian Xu
- Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China
| | - Lei Xing
- Institute of Green Chemistry and Chemical Technology, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China
| | - Lindiwe Khotseng
- Department of Chemistry, University of the Western Cape, Robert Sobukwe Road, Cape Town 7535, South Africa
| | - Huaneng Su
- Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China.
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18
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Yang M, Lao X, Sun J, Ma N, Wang S, Ye W, Guo P. Assembly of Bimetallic PdAg Nanosheets and Their Enhanced Electrocatalytic Activity toward Ethanol Oxidation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:11094-11101. [PMID: 32838533 DOI: 10.1021/acs.langmuir.0c02102] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The direct ethanol fuel cells in an alkaline medium have a broad vision of applications because of their large energy density, reasonable power density, and environmentally friendly features. Herein, we present a facile one-step method to synthesize PdAg nanosheet assemblies (NSAs) in a mixed solution of N,N-dimethylformamide and water with the addition of molybdenum hexacarbonyl and cetyltrimethylammonium bromide. Pure Pd NSA shows an irregular shape while PdAg NSAs gradually undergo a process from solid assembly to a hollow structure with the Pd/Ag molar ratio changing from 3:1 to 2:1 to 1:1. The formation of alloy nanosheets in the assemblies combined with the introduction of Ag in the Pd catalyst enhances the catalytic activity toward ethanol electrooxidation from 1524 mA mg-1 of pure Pd NSA to 1866 mA mg-1 of PdAg NSA with a Pd/Ag molar ratio of 2:1. On the basis of the experimental data, compared with pure Pd structures, both the nature of a thin nanosheet of PdAg NSAs and the structural changes in the alloy assemblies play key roles in determining the electrocatalytic activity of these Pd-based catalysts.
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Affiliation(s)
- Min Yang
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Xianzhuo Lao
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Jing Sun
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Ning Ma
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Shuqing Wang
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Wanneng Ye
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Peizhi Guo
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China
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