1
|
Wang T, Zhao S, Ji Z, Hao L, Umer S, Liu J, Hu W. Fe-Ni Diatomic Sites Coupled with Pt Clusters to Boost Methanol Electrooxidation via Free Radical Relaying. CHEMSUSCHEM 2023; 16:e202300411. [PMID: 37186222 DOI: 10.1002/cssc.202300411] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/20/2023] [Accepted: 04/26/2023] [Indexed: 05/17/2023]
Abstract
Pt-based catalysts for direct methanol fuel cells (DMFCs) are still confronted with the challenge of over-oxidation of Pt and poisoning effect of intermediates; therefore, a spatial relay strategy was adopted to overcome these issues. Herein, Pt clusters were creatively fixed on the N-doped carbon matrix with rich Fe-Ni diatoms, which can provide independent reaction sites for methanol oxidation reaction (MOR) and enhance the catalytic activity due to the electronic regulation effect between Pt cluster and atomic-level metal sites. The optimized Pt/FeNi-NC catalyst shows MOR electrocatalytic activity of 2.816 A mgPt -1 , 2.6 times that of Pt/C (1.115 A mgPt -1 ). Experiments combined with DFT study reveal that Fe-Ni diatoms and Pt clusters take charge of hydroxyl radical (⋅OH) generation and methanol activation, respectively. The free radical relaying of ⋅OH could prevent the over-oxidation of Pt. Meanwhile, ⋅OH from Fe-Ni sites accelerates the elimination of intermediates, thus improving the durability of catalysts.
Collapse
Affiliation(s)
- Tianqi Wang
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Shenghao Zhao
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Zhijiao Ji
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Lu Hao
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Sundus Umer
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Jia Liu
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
- Yulin University, Yulin, 719000, Shanxi Province, P. R. China
| | - Wenping Hu
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, P. R. China
| |
Collapse
|
2
|
Wei J, Wu F, Sun H, Xia S, Sang X, Li F, Zhang Z, Han S, Niu W. Modulate the metallic Sb state on ultrathin PdSb-based nanosheets for efficient formic acid electrooxidation. J Colloid Interface Sci 2023; 648:473-480. [PMID: 37302230 DOI: 10.1016/j.jcis.2023.05.200] [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: 03/11/2023] [Revised: 05/18/2023] [Accepted: 05/31/2023] [Indexed: 06/13/2023]
Abstract
Incorporation of oxophilic metals into Pd-based nanostructures has shown great potential in small molecule electrooxidation owing to their superior anti-poisoning capability. However, engineering the electronic structure of oxophilic dopants in Pd-based catalysts remains challenging and their impact on electrooxidation reactions is rarely demonstrated. Herein, we have developed a method for synthesizing PdSb-based nanosheets, enabling the incorporation of the Sb element in a predominantly metallic state despite its high oxophilic nature. Moreover, the Pd90Sb7W3 nanosheet serves as an efficient electrocatalyst for the formic acid oxidation reaction (FAOR), and the underlying promotion mechanism is investigated. Among the as-prepared PdSb-based nanosheets, the Pd90Sb7W3 nanosheet exhibits a remarkable 69.03% metallic state of Sb, surpassing the values observed for the Pd86Sb12W2 (33.01%) and Pd83Sb14W3 (25.41%) nanosheets. X-ray photoelectron spectroscopy (XPS) and CO stripping experiments confirm that the Sb metallic state contributes the synergistic effect of their electronic and oxophilic effect, thus leading to an effective electrooxidation removal of CO and significantly enhanced FAOR electrocatalytic activity (1.47 A mg-1; 2.32 mA cm-1) compared with the oxidated state of Sb. This work highlights the importance of modulating the chemical valence state of oxophilic metals to enhance electrocatalytic performance, offering valuable insights for the design of high-performance electrocatalysts for electrooxidation of small molecules.
Collapse
Affiliation(s)
- Jinping Wei
- School of Science, Shenyang University of Chemical Technology, Shenyang 110142, China; State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China
| | - Fengxia Wu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China.
| | - Hongda Sun
- School of Science, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Shiyu Xia
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China
| | - Xueqing Sang
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Fenghua Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China
| | - Zhichao Zhang
- School of Science, Shenyang University of Chemical Technology, Shenyang 110142, China.
| | - Shuang Han
- School of Science, Shenyang University of Chemical Technology, Shenyang 110142, China.
| | - Wenxin Niu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China.
| |
Collapse
|
3
|
Abstract
A significant challenge in the development of functional materials is understanding the growth and transformations of anisotropic colloidal metal nanocrystals. Theory and simulations can aid in the development and understanding of anisotropic nanocrystal syntheses. The focus of this review is on how results from first-principles calculations and classical techniques, such as Monte Carlo and molecular dynamics simulations, have been integrated into multiscale theoretical predictions useful in understanding shape-selective nanocrystal syntheses. Also, examples are discussed in which machine learning has been useful in this field. There are many areas at the frontier in condensed matter theory and simulation that are or could be beneficial in this area and these prospects for future progress are discussed.
Collapse
Affiliation(s)
- Kristen A Fichthorn
- Department of Chemical Engineering and Department of Physics The Pennsylvania State University University Park, Pennsylvania 16803 United States
| |
Collapse
|
4
|
Hossain SS, Ahmad Alwi MM, Saleem J, Al-Odail F, Basu A, Mozahar Hossain M. Recent Advances in Anode Electrocatalysts for Direct Formic Acid Fuel Cell-II-Platinum-Based Catalysts. CHEM REC 2022; 22:e202200156. [PMID: 36073789 DOI: 10.1002/tcr.202200156] [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: 06/05/2022] [Revised: 08/19/2022] [Indexed: 12/14/2022]
Abstract
Platinum-based catalysts have a long history of application in formic acid oxidation (FAO). The single metal Pt is active in FAO but expensive, scarce, and rapidly deactivates. Understanding the mechanism of FAO over Pt important for the rational design of catalysts. Pt nanomaterials rapidly deactivate because of the CO poisoning of Pt active sites via the dehydration pathway. Alloying with another transition metal improves the performance of Pt-based catalysts through bifunctional, ensemble, and steric effects. Supporting Pt catalysts on a high-surface-area support material is another technique to improve their overall catalytic activity. This review summarizes recent findings on the mechanism of FAO over Pt and Pt-based alloy catalysts. It also summarizes and analyzes binary and ternary Pt-based catalysts to understand their catalytic activity and structure relationship.
Collapse
Affiliation(s)
- Sk Safdar Hossain
- Department of Chemical Engineering, College of Engineering, King Faisal University, Al-Ahsa, 31982, Kingdom of Saudi Arabia
| | - Muhammad Mudassir Ahmad Alwi
- Department of Materials Engineering, College of Engineering, King Faisal University, Al-Ahsa, 31982, Kingdom of Saudi Arabia
| | - Junaid Saleem
- Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
| | - Faisal Al-Odail
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa, 31982, Kingdom of Saudi Arabia
| | - Avijit Basu
- Department of Chemical Engineering, College of Engineering, King Faisal University, Al-Ahsa, 31982, Kingdom of Saudi Arabia
| | - Mohammad Mozahar Hossain
- Department of Chemical Engineering, College of Engineering, King Fahd University of Petroleum & Minerals, Dhahran, 31612, Kingdom of Saudi Arabia
| |
Collapse
|
5
|
Leng Z, Wu X, Li X, Li J, Qian N, Ji L, Yang D, Zhang H. PdPtRu nanocages with tunable compositions for boosting the methanol oxidation reaction. NANOSCALE ADVANCES 2022; 4:1158-1163. [PMID: 36131762 PMCID: PMC9418811 DOI: 10.1039/d1na00842k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 01/05/2022] [Indexed: 06/15/2023]
Abstract
PtRu/C is a well-known commercial electrocatalyst with promising performance for the methanol oxidation reaction (MOR). Further improving the MOR properties of PtRu-based electrocatalysts is highly desirable, especially through structure design. Here we report a facile approach for the synthesis of PdPtRu nanocages with different components through a seed-mediated approach followed by chemical etching. The Pd@PtRu nanocubes were first generated using Pd nanocubes as the seeds and some Pd atoms were subsequently etched away, leading to the nanocages. When evaluated as electrocatalysts for the MOR in acidic media, the PdPtRu nanocages exhibited substantially enhanced catalytic activity and stability relative to commercial Pt/C and PtRu/C. Specifically, PdPt2.5Ru2.4 achieved the highest specific (8.2 mA cm-2) and mass (0.75 mA mgPt -1) activities for the MOR, which are 2.2 and 4.2 times higher than those of commercial Pt/C. Such an enhancement can be attributed to the highly open structure of the nanocages, and the possible synergistic effect between the three components.
Collapse
Affiliation(s)
- Zihan Leng
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Xingqiao Wu
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Xiao Li
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Junjie Li
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Ningkang Qian
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Liang Ji
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Deren Yang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou Zhejiang 310027 P. R. China
| | - Hui Zhang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou Zhejiang 310027 P. R. China
- Institute of Advanced Semiconductors, Hangzhou Innovation Center, Zhejiang University Hangzhou Zhejiang 310027 People's Republic of China
| |
Collapse
|
6
|
Abdel-Hady EE, Shaban M, Abdel-Hamed MO, Gamal A, Yehia H, Ahmed AM. Synthesis and Characterization of NiCoPt/CNFs Nanoparticles as an Effective Electrocatalyst for Energy Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:492. [PMID: 35159837 PMCID: PMC8840489 DOI: 10.3390/nano12030492] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 01/22/2022] [Accepted: 01/27/2022] [Indexed: 11/23/2022]
Abstract
In this work, three nanoparticle samples, Ni4Co2Pt/CNFs, Ni5CoPt/CNFs and Ni6Pt/CNFs, were designed according to the molar ratio during loading on carbon nanofibers (CNFs) using electrospinning and carbonization at 900 °C for 7 h in an argon atmosphere. The metal loading and carbon ratio were fixed at 20 and 80 wt%, respectively. Various analysis tools were used to investigate the chemical composition, structural, morphological, and electrochemical (EC) properties. For samples with varying Co%, the carbonization process reduces the fiber diameter of the obtained electrospun nanofibers from 200-580 nm to 150-200 nm. The EDX mapping revealed that nickel, platinum, and cobalt were evenly and uniformly incorporated into the carbonized PVANFs. The prepared Ni-Co-Pt/CNFs have a face-centered cubic (FCC) structure with slightly increased crystallite size as the Co% decreased. The electrocatalytic properties of the samples were investigated for ethanol, methanol and urea electrooxidation. Using cyclic voltammetry (CV), chronoamperometry, and electrochemical impedance measurements, the catalytic performance and electrode stability were investigated as a function of electrolyte concentration, scan rate, and reaction time. When Co is added to Ni, the activation energy required for the electrooxidation reaction decreases and the electrode stability increases. In 1.5 M methanol, the Ni5CoPt/CNFs electrode showed the lowest onset potential and the highest current density (30.6 A/g). This current density is reduced to 28.2 and 21.2 A/g for 1.5 M ethanol and 0.33 M urea, respectively. The electrooxidation of ethanol, methanol, and urea using our electrocatalysts is a combination of kinetic/diffusion control limiting reactions. This research provided a unique approach to developing an efficient Ni-Co-Pt-based electrooxidation catalyst for ethanol, methanol and urea.
Collapse
Affiliation(s)
- Esam E. Abdel-Hady
- Physics Department, Faculty of Science, Minia University, Minia 61519, Egypt; (E.E.A.-H.); (M.O.A.-H.); (H.Y.)
- Academy of Scientific Research and Technology (ASRT) of the Arab Republic of Egypt, Cairo 11516, Egypt
| | - Mohamed Shaban
- Department of Physics, Faculty of Science, Islamic University in Madinah, Al-Madinah Al-Munawarah 42351, Saudi Arabia
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt; (A.G.); (A.M.A.)
| | - Mohamed O. Abdel-Hamed
- Physics Department, Faculty of Science, Minia University, Minia 61519, Egypt; (E.E.A.-H.); (M.O.A.-H.); (H.Y.)
- Academy of Scientific Research and Technology (ASRT) of the Arab Republic of Egypt, Cairo 11516, Egypt
| | - Ahmed Gamal
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt; (A.G.); (A.M.A.)
| | - Heba Yehia
- Physics Department, Faculty of Science, Minia University, Minia 61519, Egypt; (E.E.A.-H.); (M.O.A.-H.); (H.Y.)
| | - Ashour M. Ahmed
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt; (A.G.); (A.M.A.)
| |
Collapse
|
7
|
Pushpalatha N, Abraham EV, Saravanan G. Pt–Cu nanoalloy catalysts: compositional dependence and selectivity for direct electrochemical oxidation of formic acid. NEW J CHEM 2022. [DOI: 10.1039/d2nj01871c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A PtCu3 nanoalloy catalyst showed much enhanced catalytic activity for the direct electrochemical oxidation of formic acid compared to a commercial platinum catalyst.
Collapse
Affiliation(s)
- Nataraj Pushpalatha
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), CSIR, Madras Complex, Taramani, Chennai, 600 113, India
| | - Elezabeth V. Abraham
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), CSIR, Madras Complex, Taramani, Chennai, 600 113, India
| | - Govindachetty Saravanan
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), CSIR, Madras Complex, Taramani, Chennai, 600 113, India
| |
Collapse
|
8
|
Pu H, Zhang T, Dong K, Dai H, Zhou L, Wang K, Bai S, Wang Y, Deng Y. Evolution of PtCu tripod nanocrystals to dendritic triangular nanocrystals and study of the electrochemical performance to alcohol electrooxidation. NANOSCALE 2021; 13:20592-20600. [PMID: 34874030 DOI: 10.1039/d1nr07180g] [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
In the field of catalysis, the design and construction of nanomaterials is an efficient way to optimize the catalytic activity of catalysts. This study presents the synthesis of PtCu tripod nanocrystals with branching structures and high purity prepared using a simple hydrothermal method. The dendritic PtCu triangular nanocrystals were successfully synthesized by regulating the amount of I- ions to achieve different degrees of branching on PtCu nanocrystals, and the process was systematically studied and analyzed. Meanwhile, dumbbell nanocrystals of PtCu were successfully synthesized through slight adjustments to synthesis conditions. In electrochemical tests, the obtained dendritic PtCu triangular nanocrystals exhibited prominent electrocatalytic activity and long-term stability for ethylene glycol, methanol, and ethanol oxidation reactions due to the unique nanostructures as well as alloyed virtue, and were much better than commercial Pt/C. In addition, this study provides a general strategy for designing novel branched Pt-based nanomaterials with high electrocatalytic performance.
Collapse
Affiliation(s)
- Houkang Pu
- School of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, China.
| | - Te Zhang
- School of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, China.
| | - Kaiyu Dong
- School of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, China.
| | - Huizhen Dai
- School of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, China.
| | - Luming Zhou
- School of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, China.
| | - Kuankuan Wang
- School of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, China.
| | - Shuxing Bai
- School of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, China.
| | - Yingying Wang
- Qingdao Hengxing University of Science and Technology, Jiushui East Road 588, Qingdao 266100, China.
| | - Yujia Deng
- School of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, China.
| |
Collapse
|
9
|
Cao B, Zeng L, Liu H, Shang J, Wang L, Lang J, Cao X, Gu H. Synthesis of the Platinum Nanoribbons Regulated by Fluorine and Applications in Electrocatalysis. Inorg Chem 2021; 60:4366-4370. [PMID: 33764045 DOI: 10.1021/acs.inorgchem.1c00231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Controlling the morphology of highly homogeneous nanoribbons is one of the main goals for synthesizing catalysts with excellent activity and durability. In this Communication, platinum (Pt) nanoribbons were synthesized by a one-pot method. We used ammonium fluoride (NH4F) as the regulator, under 8 atm of hydrogen (H2), to synthesize zigzag-shaped two-dimensional Pt nanoribbons. Benefiting from their unique morphology, the Pt nanoribbons display superior electrocatalytic activity and stability.
Collapse
Affiliation(s)
- Binbin Cao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Centre of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China
| | - Lingjian Zeng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Centre of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China
| | - Haidong Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Centre of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China
| | - Jingrui Shang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Centre of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China
| | - Liang Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Jianping Lang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Centre of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China
| | - Xueqin Cao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Centre of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China
| | - Hongwei Gu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Centre of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China
| |
Collapse
|
10
|
Li P, Du C, Gao X, Zhuang Z, Xiang D, Zhang C, Chen W. Insights into the morphology and composition effects of one-dimensional CuPt nanostructures on the electrocatalytic activities and methanol oxidation mechanism by in situ FTIR. NANOSCALE 2020; 12:13688-13696. [PMID: 32573577 DOI: 10.1039/d0nr01095b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Morphology modulation and surface structure-controlled synthesis are two effective ways to tune the electrocatalytic activities of metal nanomaterials. Pt-based binary or ternary metal nanostructures have become a class of promising catalysts toward the oxygen reduction reaction (ORR) and the methanol oxidation reaction (MOR) for direct methanol fuel cells. Herein to reveal the morphology and surface structure effects of one-dimensional (1D) Pt-based nanostructures on their electrocatalytic properties, two types of 1D CuPt nanowires (CuPt NWs) and CuPt nanotubes (CuPt NTs) with tunable surface structures and compositions were fabricated using a convenient and easy strategy. It was found that among all the studied samples, CuPt2.22 NWs exhibited the highest efficiency catalytic performances for both the ORR and MOR in an acidic electrolyte. For the ORR, CuPt2.22 NWs exhibited an onset potential (Eonset) of 0.749 V and a half-wave potential (E1/2) of 0.577 V, which are more positive than those of the commercial Pt/C (0.668 V and 0.558 V). On the other hand, CuPt2.22 NWs show a specific activity of 20.76 mA cm-2 and a mass activity of 0.171 mA μgPt-1 for the MOR, which are 7.75 and 1.82 times, respectively, larger than those of Pt/C (2.679 mA cm-2 and 0.094 mA μgPt-1). Meanwhile, the reaction mechanism of the MOR on CuPt2.22 NWs was examined by in situ FTIR. From the enhanced IR absorption, the linear- and bridge-adsorbed CO intermediates can be determined during the methanol oxidation on CuPt2.22 NWs, from which the MOR proceeds through a dual reaction pathway. This work reveals that rationally tuning the electronic structures of 1D metal nanomaterials by well-controlling the composition and surface morphology on the nanoscale could greatly enhance the catalytic properties, which are very important for their application in fuel cells.
Collapse
Affiliation(s)
- Ping Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China.
| | | | | | | | | | | | | |
Collapse
|
11
|
Xiang H, Zheng Y, Sun Y, Guo T, Zhang P, Li W, Kong S, Ouzounian M, Chen H, Li H, Hu TS, Yu G, Feng Y, Liu S. Bimetallic and postsynthetically alloyed PtCu nanostructures with tunable reactivity for the methanol oxidation reaction. NANOSCALE ADVANCES 2020; 2:1603-1612. [PMID: 36132327 PMCID: PMC9419734 DOI: 10.1039/d0na00076k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 03/03/2020] [Indexed: 06/11/2023]
Abstract
Designing effective catalysts by controlling morphology and structure is key to improving the energy efficiency of fuel cells. A good understanding of the effects of specific structures on electrocatalytic activity, selectivity, and stability is needed. Here, we propose a facile method to synthesize PtCu bimetallic nanostructures with controllable compositions by using Cu nanowires as a template and ascorbic acid as a reductant. A further annealing process provided the alloy PtCu with tunable crystal structures. The combination of distinct structures with tunable compositions in the form of PtCu nanowires provides plenty of information for better understanding the reaction mechanism during catalysis. HClO4 cyclic voltammetry (CV) tests confirmed that various phase transformations occurred in bimetallic and alloy samples, affecting morphology and unit cell structures. Under a bifunctional synergistic effect and the influence of the insertion of a second metal, the two series of structures show superior performance toward methanol electrooxidation. Typically, the post-product alloy A-Pt14Cu86 with a cubic structure (a = 3.702 Å) has better methanol oxidation reaction (MOR) catalysis performance. Density functional theory (DFT) calculations were performed to determine an optimal pathway using the Gibbs free energy and to verify the dependence of the electrocatalytic performance on the lattice structure via overpotential changes. Bimetallic PtCu has high CO tolerance, maintaining high stability. This work provides an approach for the systematic design of novel catalysts and the exploration of electrocatalytic mechanisms for fuel cells and other related applications.
Collapse
Affiliation(s)
- Haiyan Xiang
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Yueshao Zheng
- Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University Changsha 410082 P. R. China
| | - Yue Sun
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Tingting Guo
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Organic Optoelectronic Materials and Devices, Kunming University Kunming 650000 P. R. China
| | - Pei Zhang
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Wei Li
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Shiwei Kong
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Miray Ouzounian
- Department of Mechanical Engineering, California State University Los Angeles CA 90032 USA
| | - Hong Chen
- School of Materials Science and Energy Engineering, Foshan University Foshan 528000 P. R. China
| | - Huimin Li
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Travis Shihao Hu
- Department of Mechanical Engineering, California State University Los Angeles CA 90032 USA
| | - Gang Yu
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Yexin Feng
- Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University Changsha 410082 P. R. China
| | - Song Liu
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| |
Collapse
|
12
|
Gao N, Wu X, Li X, Huang J, Li D, Yang D, Zhang H. Facile synthesis of ternary PtPdCu alloy hexapods as highly efficient electrocatalysts for methanol oxidation. RSC Adv 2020; 10:12689-12694. [PMID: 35497612 PMCID: PMC9051465 DOI: 10.1039/d0ra00963f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 03/21/2020] [Indexed: 11/21/2022] Open
Abstract
Developing an efficient Pt-based multimetallic electrocatalyst with well-defined shapes for methanol oxidation reaction (MOR) is critical, however, it still remains challenging. Here we report a one-pot approach for the synthesis of ternary PtPdCu alloy hexapods with different compositions. Their MOR activities increased in the sequence Pt2PdCu4 < Pt3PdCu4 < Pt5PdCu5, and were substantially higher than that of commercial Pt/C. Specifically, the Pt5PdCu5 hexapods exhibited the highest mass (0.97 mA μgPt -1) and specific (7.39 mA cm-2) activities towards MOR, and were 5.4 and 19.4 times higher than those of commercial Pt/C (0.18 mA μgPt -1 and 0.38 mA cm-2), respectively. This enhancement could be probably attributed to the bifunctional mechanism and ligand effect through the addition of Cu and Pd as well as the unique dendritic structure. The better tolerance for CO poisoning also endowed the PtPdCu hexapods with superior durability relative to commercial Pt/C.
Collapse
Affiliation(s)
- Na Gao
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 P. R. China
| | - Xingqiao Wu
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 P. R. China
| | - Xiao Li
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 P. R. China
| | - Jingbo Huang
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 P. R. China
| | - Dongsheng Li
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 P. R. China
| | - Deren Yang
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 P. R. China
| | - Hui Zhang
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 P. R. China
| |
Collapse
|
13
|
Trimetallic PtRhCo petal-assembled alloyed nanoflowers as efficient and stable bifunctional electrocatalyst for ethylene glycol oxidation and hydrogen evolution reactions. J Colloid Interface Sci 2020; 559:206-214. [DOI: 10.1016/j.jcis.2019.10.024] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 10/05/2019] [Accepted: 10/08/2019] [Indexed: 11/23/2022]
|
14
|
Zhang J, Jia W, Dang S, Cao Y. Sub-5 nm octahedral platinum-copper nanostructures anchored on nitrogen-doped porous carbon nanofibers for remarkable electrocatalytic hydrogen evolution. J Colloid Interface Sci 2020; 560:161-168. [DOI: 10.1016/j.jcis.2019.10.062] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 09/29/2019] [Accepted: 10/17/2019] [Indexed: 01/27/2023]
|
15
|
Wang Y, Jiang X, Fu G, Li Y, Tang Y, Lee JM, Tang Y. Cu 5Pt Dodecahedra with Low-Pt Content: Facile Synthesis and Outstanding Formic Acid Electrooxidation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:34869-34877. [PMID: 31502819 DOI: 10.1021/acsami.9b09153] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Tailoring composition and structure are significantly important to improve the utilization and optimize the performance of the precious Pt catalyst toward various reactions, which greatly relies on the feasible synthesis approach. Herein, we demonstrate that Cu-rich Cu5Pt alloys with unique excavated dodecahedral frame-like structure (Cu5Pt nanoframes) can be synthesized via simply adjusting the amounts of salt precursors and surfactants under hydrothermal conditions. It is established that the presence of hexamethylenetetramine and cetyltrimethylammonium bromide, as well as the selection of a proper Pt/Cu ratio are key for the acquisition of the target product. The immediate appeal of this material stems from frame-like architecture and ultralow Pt content involved, which can be used to greatly improve the utilization efficiency of Pt atoms. When benchmarked against commercial catalysts, the developed Cu5Pt nanostructures display superior electrocatalytic performance toward formic acid oxidation, owing to unique electronic effect and ensemble effect. This work elucidates a promising methodology for the synthesis of Pt-based nanostructures while highlights the significance of composition and structure in electrocatalysis.
Collapse
Affiliation(s)
- Yao Wang
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing 210023 , China
| | - Xian Jiang
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing 210023 , China
| | - Gengtao Fu
- School of Chemical and Biomedical Engineering , Nanyang Technological University , Singapore 637459 , Singapore
| | - Yuhan Li
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing 210023 , China
| | - Yidan Tang
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing 210023 , China
| | - Jong-Min Lee
- School of Chemical and Biomedical Engineering , Nanyang Technological University , Singapore 637459 , Singapore
| | - Yawen Tang
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing 210023 , China
| |
Collapse
|
16
|
Gao F, Zhang Y, Song P, Wang J, Yan B, Sun Q, Li L, Zhu X, Du Y. Shape-control of one-dimensional PtNi nanostructures as efficient electrocatalysts for alcohol electrooxidation. NANOSCALE 2019; 11:4831-4836. [PMID: 30816372 DOI: 10.1039/c8nr09892a] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Bimetallic one-dimensional (1D) nanostructures such as nanowires (NWs) and nanorods (NRs), serving as high-efficiency anode electrocatalysts, have attracted extensive attention in the past decade. However, the precise design and synthesis of 1D Pt-based nanocrystals with tunable morphology and size still remain an arduous challenge. Driven by this, we report a facile yet efficient strategy for the first time to prepare PtNi ultrafine NWs (UNWs), sinuous NWs (SNWs) and ultrashort NRs (UNRs) by adjusting the amount of citric acid, ascorbic acid and glucose. Detailed analysis of their electrocatalytic properties has indicated that the as-obtained PtNi SNWs exhibit the most outstanding electrocatalytic activity toward ethylene glycol oxidation reaction (EGOR) and glycerol oxidation (GOR), 4.5 and 4.3 times higher in mass activity as well as 4.3 and 3.9 times higher in specific activity compared with the commercial Pt/C catalyst. The as-prepared PtNi SNWs are also more stable than the commercial Pt/C catalyst after successive durability tests. The proposed method provides insight into more rational designs of bimetallic nanocatalysts with 1D architectures and the as-synthesized PtNi catalysts with improved electrocatalytic performance assist in promoting the further development of direct alcohol fuel cells (DAFCs).
Collapse
Affiliation(s)
- Fei Gao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P.R. China.
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Huang XY, You LX, Zhang XF, Feng JJ, Zhang L, Wang AJ. -proline assisted solvothermal preparation of Cu-rich rhombic dodecahedral PtCu nanoframes as advanced electrocatalysts for oxygen reduction and hydrogen evolution reactions. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.01.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
18
|
Taniguchi K, Shinoda K, Cuya Huaman JL, Yokoyama S, Uchikoshi M, Matsumoto T, Suzuki K, Miyamura H, Jeyadevan B. Designed synthesis of highly catalytic Ni–Pt nanoparticles for fuel cell applications. SN APPLIED SCIENCES 2018. [DOI: 10.1007/s42452-018-0133-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
19
|
Lai J, Chao Y, Zhou P, Yang Y, Zhang Y, Yang W, Wu D, Feng J, Guo S. One-Pot Seedless Aqueous Design of Metal Nanostructures for Energy Electrocatalytic Applications. ELECTROCHEM ENERGY R 2018. [DOI: 10.1007/s41918-018-0018-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|