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PdMo supported by graphene for synergistic boosting electrochemical catalysis of methanol oxidation. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.117038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Zhu D, Liu Y, Liu M, Liu X, Prasad PN, Swihart MT. Galvanic replacement synthesis of multi-branched gold nanocrystals for photothermal cancer therapy. J Mater Chem B 2021; 8:5491-5499. [PMID: 32478780 DOI: 10.1039/d0tb00748j] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We present a facile organic phase synthesis method for producing multi-branched gold nanocrystals (nanostars) with a broad localized surface plasmon resonance (LSPR) across near-infrared (NIR) to short-wave infrared (SWIR) wavelengths. In this approach, galvanic replacement of copper by gold, in seed particles produced in situ, initiates growth of multi-branched structures. The method enables broad tuning of the LSPR energy by manipulating the branch length, with peak LSPR absorbance tuned from 850 to 1880 nm, reaching SWIR wavelengths covering the second and third optical transparency windows in biological media, rarely achieved with noble metal plasmonic nanostructures. After a ligand-exchange process, the gold nanostars readily disperse in water while retaining their LSPR absorbance. The multi-branched Au nanocrystals (NCs) exhibit exceptionally high photothermal transduction efficiency, exceeding that of Au nanorods and nanoparticles, to which we make direct comparisons here. At the same time, their synthesis is much more straightforward than hollow structures like nanocages, nanoshells, and nanomatryoshkas that can also exhibit high photothermal efficiency at NIR wavelengths. In vitro photothermal heating of multi-branched Au NCs in the presence of human cervical cancer cells causes effective cell ablation after 10 min laser irradiation. Cell viability assays demonstrate that the NCs are biocompatible at doses required for photothermal therapy. These results suggest that the multi-branched Au NCs can serve as a new type of photothermal therapy agent and in other applications in which strong NIR to SWIR absorbers are needed.
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Affiliation(s)
- Dewei Zhu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA.
| | - Yang Liu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA.
| | - Maixian Liu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong 518055, China and National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen, 518055, China
| | - Xin Liu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA.
| | - Paras N Prasad
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA. and Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA
| | - Mark T Swihart
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA. and Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA and RENEW Institute, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA
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Tong Y, Yan X, Liang J, Dou SX. Metal-Based Electrocatalysts for Methanol Electro-Oxidation: Progress, Opportunities, and Challenges. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e1904126. [PMID: 31608601 DOI: 10.1002/smll.201904126] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 08/23/2019] [Indexed: 06/10/2023]
Abstract
Direct methanol fuel cells (DMFCs) are among the most promising portable power supplies because of their unique advantages, including high energy density/mobility of liquid fuels, low working temperature, and low emission of pollutants. Various metal-based anode catalysts have been extensively studied and utilized for the essential methanol oxidation reaction (MOR) due to their superior electrocatalytic performance. At present, especially with the rapid advance of nanotechnology, enormous efforts have been exerted to further enhance the catalytic performance and minimize the use of precious metals. Constructing multicomponent metal-based nanocatalysts with precisely designed structures can achieve this goal by providing highly tunable compositional and structural characteristics, which is promising for the modification and optimization of their related electrochemical properties. The recent advances of metal-based electrocatalytic materials with rationally designed nanostructures and chemistries for MOR in DMFCs are highlighted and summarized herein. The effects of the well-defined nanoarchitectures on the improved electrochemical properties of the catalysts are illustrated. Finally, conclusive perspectives are provided on the opportunities and challenges for further refining the nanostructure of metal-based catalysts and improving electrocatalytic performance, as well as the commercial viability.
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Affiliation(s)
- Yueyu Tong
- Institute for Superconducting and Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong, North Wollongong, NSW, 2500, Australia
| | - Xiao Yan
- Institute for Superconducting and Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong, North Wollongong, NSW, 2500, Australia
- Guangdong Key Laboratory of Membrane Materials and Membrane Separation, Guangzhou Institute of Advanced Technology, Chinese Academy of Sciences, Guangzhou, 511458, China
| | - Ji Liang
- Institute for Superconducting and Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong, North Wollongong, NSW, 2500, Australia
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Shi Xue Dou
- Institute for Superconducting and Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong, North Wollongong, NSW, 2500, Australia
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Kwon T, Jun M, Lee K. Catalytic Nanoframes and Beyond. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001345. [PMID: 32633878 DOI: 10.1002/adma.202001345] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/01/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
The ever-increasing need for the production and expenditure of sustainable energy is a result of the astonishing rate of consumption of fossil fuels and the accompanying environmental problems. Emphasis is being directed to the generation of sustainable energy by the fuel cell and water splitting technologies. Accordingly, the development of highly efficient electrocatalysts has attracted significant interest, as the fuel cell and water splitting technologies are critically dependent on their performance. Among numerous catalyst designs under investigation, nanoframe catalysts have an intrinsically large surface area per volume and a tunable composition, which impacts the number of catalytically active sites and their intrinsic catalytic activity, respectively. Nevertheless, the structural integrity of the nanoframe during electrochemical operation is an ongoing concern. Some significant advances in the field of nanoframe catalysts have been recently accomplished, specifically geared to resolving the catalytic stability concerns and significantly boosting the intrinsic catalytic activity of the active sites. Herein, general synthetic concepts of nanoframe structures and their structure-dependent catalytic performance are summarized, along with recent notable advances in this field. A discussion on the remaining challenges and future directions, addressing the limitations of nanoframe catalysts, are also provided.
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Affiliation(s)
- Taehyun Kwon
- Department of Chemistry and Research Institute for Natural Sciences, Korea University, Seoul, 02841, Republic of Korea
| | - Minki Jun
- Department of Chemistry and Research Institute for Natural Sciences, Korea University, Seoul, 02841, Republic of Korea
| | - Kwangyeol Lee
- Department of Chemistry and Research Institute for Natural Sciences, Korea University, Seoul, 02841, Republic of Korea
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Cheng N, Zhang L, Zhou Y, Yu S, Chen L, Jiang H, Li C. A general carbon monoxide-assisted strategy for synthesizing one-nanometer-thick Pt-based nanowires as effective electrocatalysts. J Colloid Interface Sci 2020; 572:170-178. [PMID: 32240790 DOI: 10.1016/j.jcis.2020.03.083] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 02/26/2020] [Accepted: 03/23/2020] [Indexed: 11/17/2022]
Abstract
To balance the Pt utilization and the durability is the key issue for developing Pt-based oxygen reduction reaction (ORR) catalysts, and constructing ultrathin one-dimensional (1D) structure provides a practical solution. Here, a facile CO-assisted strategy has been proposed for synthesizing PtFe nanowires (NWs) with an ultrathin diameter of one-nanometer and high aspect ratio for the first time, which demonstrates great universality and can be extended to a ternary system. The NWs are found to grow following an oriented attachment mechanism facilitated by the preferential adsorption and reducibility of CO. Based on composition regulation, PtFe NWs and PtFeCo NWs exhibit superior catalytic performance, of which the electrochemical active surface areas are extremely high, achieving 1.5 folds of that of Pt/C catalyst. Benefiting from the synergistic effect endowed by alloying and the ultrathin anisotropic structure, PtFe NWs and PtFeCo NWs show remarkable mass activity of 0.57 and 0.58 A mg-1Pt, respectively, and the durability also meet the 2020 standard of DOE, holding great application potential.
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Affiliation(s)
- Na Cheng
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Ling Zhang
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Yingjie Zhou
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Shengwei Yu
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Liyuan Chen
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Haibo Jiang
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China.
| | - Chunzhong Li
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China.
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Lin Z, Sheng Y, Li J, Rui Z, Liu Y, Liu J, Zou Z. Ternary heterogeneous Pt–Ni–Au nanowires with enhanced activity and stability for PEMFCs. Chem Commun (Camb) 2020; 56:4276-4279. [DOI: 10.1039/d0cc01554g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work presents heterogeneous ternary nanowires with randomly distributed Pt–Ni phases and Pt–Au phases for the first time.
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Affiliation(s)
- Zhicheng Lin
- Jiangsu Key Laboratory for Nano Technology
- National Laboratory of Solid State Microstructures
- College of Engineering and Applied Sciences
- and Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
| | - Yuan Sheng
- Jiangsu Key Laboratory for Nano Technology
- National Laboratory of Solid State Microstructures
- College of Engineering and Applied Sciences
- and Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
| | - Jia Li
- Jiangsu Key Laboratory for Nano Technology
- National Laboratory of Solid State Microstructures
- College of Engineering and Applied Sciences
- and Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
| | - Zhiyan Rui
- Jiangsu Key Laboratory for Nano Technology
- National Laboratory of Solid State Microstructures
- College of Engineering and Applied Sciences
- and Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
| | - Yide Liu
- Jiangsu Key Laboratory for Nano Technology
- National Laboratory of Solid State Microstructures
- College of Engineering and Applied Sciences
- and Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
| | - Jianguo Liu
- Jiangsu Key Laboratory for Nano Technology
- National Laboratory of Solid State Microstructures
- College of Engineering and Applied Sciences
- and Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
| | - Zhigang Zou
- Jiangsu Key Laboratory for Nano Technology
- National Laboratory of Solid State Microstructures
- College of Engineering and Applied Sciences
- and Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
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Zhu JY, Li FM, Yao L, Han CC, Li SN, Zeng JH, Jiang JX, Lee JM, Chen Y. In situ bubble template-assisted synthesis of phosphonate-functionalized Rh nanodendrites and their catalytic application. CrystEngComm 2017. [DOI: 10.1039/c7ce00606c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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