High-pressure hydrothermal synthesis of shape-controlled AuPt nanoflowers with enhanced electro-catalytic properties for methanol oxidation reaction
AuPt nanoflowers (NFs) were successfully synthesized by one-pot high-pressure hydrothermal method. The sizes and morphologies of AuPt NFs can be flexibly tailored by adjusting the concentration of cetyltrimethylammonium chloride (CTAC), initial pressure, the concentration ratio of precursor and tota...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-03-01
|
| Series: | Results in Chemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211715625000670 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1823864418173190144 |
|---|---|
| author | Yan Liu Ziyi Li Zhao Zhang Haitao Zhang |
| author_facet | Yan Liu Ziyi Li Zhao Zhang Haitao Zhang |
| author_sort | Yan Liu |
| collection | DOAJ |
| description | AuPt nanoflowers (NFs) were successfully synthesized by one-pot high-pressure hydrothermal method. The sizes and morphologies of AuPt NFs can be flexibly tailored by adjusting the concentration of cetyltrimethylammonium chloride (CTAC), initial pressure, the concentration ratio of precursor and total precursor concentrations. Our results showed that AuPt NFs prepared using 640 mg CTAC has the characteristics of the largest electrochemical active surface areas (ECSAs), highest CO-tolerance and most excellent methanol oxidation reaction (MOR) catalytic performance because of the maximum Pt utilization. Furthermore, the AuPt NFs prepared using 640 mg CTAC also exhibited the larger ECSAs and the better MOR catalytic performance than those of Pt nanoparticles (NPs) alone and commercial Pt black. The mass-normalized current densities for MOR in the presence of AuPt NFs was approximately 3.1 and 5.9 times higher than those of Pt NPs and commercial Pt black, respectively. Therefore, it proves that the method of the size and morphology control synthesized of AuPt NFs can suitable optimize the design of Pt-based catalysts for direct methanol fuel cells (DMFCs). |
| format | Article |
| id | doaj-art-9cde311a9e484e3ca45eceeab31f0e86 |
| institution | Kabale University |
| issn | 2211-7156 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Chemistry |
| spelling | doaj-art-9cde311a9e484e3ca45eceeab31f0e862025-02-09T05:00:05ZengElsevierResults in Chemistry2211-71562025-03-0114102084High-pressure hydrothermal synthesis of shape-controlled AuPt nanoflowers with enhanced electro-catalytic properties for methanol oxidation reactionYan Liu0Ziyi Li1Zhao Zhang2Haitao Zhang3Department of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang 524002, China; College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China; Corresponding authors at: Department of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang 524002, China.Ji Hua Laboratory, Foshan 528200, ChinaDepartment of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang 524002, ChinaDepartment of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang 524002, China; Corresponding authors at: Department of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang 524002, China.AuPt nanoflowers (NFs) were successfully synthesized by one-pot high-pressure hydrothermal method. The sizes and morphologies of AuPt NFs can be flexibly tailored by adjusting the concentration of cetyltrimethylammonium chloride (CTAC), initial pressure, the concentration ratio of precursor and total precursor concentrations. Our results showed that AuPt NFs prepared using 640 mg CTAC has the characteristics of the largest electrochemical active surface areas (ECSAs), highest CO-tolerance and most excellent methanol oxidation reaction (MOR) catalytic performance because of the maximum Pt utilization. Furthermore, the AuPt NFs prepared using 640 mg CTAC also exhibited the larger ECSAs and the better MOR catalytic performance than those of Pt nanoparticles (NPs) alone and commercial Pt black. The mass-normalized current densities for MOR in the presence of AuPt NFs was approximately 3.1 and 5.9 times higher than those of Pt NPs and commercial Pt black, respectively. Therefore, it proves that the method of the size and morphology control synthesized of AuPt NFs can suitable optimize the design of Pt-based catalysts for direct methanol fuel cells (DMFCs).http://www.sciencedirect.com/science/article/pii/S2211715625000670High-pressure hydrothermal synthesisAu-Pt nanoflowersMethanol oxidation reaction |
| spellingShingle | Yan Liu Ziyi Li Zhao Zhang Haitao Zhang High-pressure hydrothermal synthesis of shape-controlled AuPt nanoflowers with enhanced electro-catalytic properties for methanol oxidation reaction Results in Chemistry High-pressure hydrothermal synthesis Au-Pt nanoflowers Methanol oxidation reaction |
| title | High-pressure hydrothermal synthesis of shape-controlled AuPt nanoflowers with enhanced electro-catalytic properties for methanol oxidation reaction |
| title_full | High-pressure hydrothermal synthesis of shape-controlled AuPt nanoflowers with enhanced electro-catalytic properties for methanol oxidation reaction |
| title_fullStr | High-pressure hydrothermal synthesis of shape-controlled AuPt nanoflowers with enhanced electro-catalytic properties for methanol oxidation reaction |
| title_full_unstemmed | High-pressure hydrothermal synthesis of shape-controlled AuPt nanoflowers with enhanced electro-catalytic properties for methanol oxidation reaction |
| title_short | High-pressure hydrothermal synthesis of shape-controlled AuPt nanoflowers with enhanced electro-catalytic properties for methanol oxidation reaction |
| title_sort | high pressure hydrothermal synthesis of shape controlled aupt nanoflowers with enhanced electro catalytic properties for methanol oxidation reaction |
| topic | High-pressure hydrothermal synthesis Au-Pt nanoflowers Methanol oxidation reaction |
| url | http://www.sciencedirect.com/science/article/pii/S2211715625000670 |
| work_keys_str_mv | AT yanliu highpressurehydrothermalsynthesisofshapecontrolledauptnanoflowerswithenhancedelectrocatalyticpropertiesformethanoloxidationreaction AT ziyili highpressurehydrothermalsynthesisofshapecontrolledauptnanoflowerswithenhancedelectrocatalyticpropertiesformethanoloxidationreaction AT zhaozhang highpressurehydrothermalsynthesisofshapecontrolledauptnanoflowerswithenhancedelectrocatalyticpropertiesformethanoloxidationreaction AT haitaozhang highpressurehydrothermalsynthesisofshapecontrolledauptnanoflowerswithenhancedelectrocatalyticpropertiesformethanoloxidationreaction |