Laser Synthesis of Platinum Single-Atom Catalysts for Hydrogen Evolution Reaction
Platinum (Pt)-based heterogeneous catalysts show excellent performance for the electrocatalytic hydrogen evolution reaction (HER); however, the high cost and earth paucity of Pt means that efforts are being directed to reducing Pt usage, whilst maximizing catalytic efficiency. In this work, a two-st...
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2025-01-01
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| author | Hengyi Guo Lingtao Wang Xuzhao Liu Paul Mativenga Zhu Liu Andrew G. Thomas |
| author_facet | Hengyi Guo Lingtao Wang Xuzhao Liu Paul Mativenga Zhu Liu Andrew G. Thomas |
| author_sort | Hengyi Guo |
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| description | Platinum (Pt)-based heterogeneous catalysts show excellent performance for the electrocatalytic hydrogen evolution reaction (HER); however, the high cost and earth paucity of Pt means that efforts are being directed to reducing Pt usage, whilst maximizing catalytic efficiency. In this work, a two-step laser annealing process was employed to synthesize Pt single-atom catalysts (SACs) on a MOF-derived carbon substrate. The laser irradiation of a metal–organic framework (MOF) film (ZIF67@ZIF8 composite) by rapid scanning of a ns pulsed infrared (IR; 1064 nm) laser across the freeze-dried MOF resulted in a metal-loaded graphitized film. This was followed by loading this film with chloroplatinic acid (H<sub>2</sub>PtCl<sub>6</sub>), followed by further irradiation with an ultraviolet (UV; 355 nm) laser, resulting in pyrolysis of H<sub>2</sub>PtCl<sub>6</sub> to form the SAC, along with a further reduction of the MOF to form a Pt-decorated laser-induced annealed MOF (Pt-LIA-ZIF8@ZIF67). The Pt-LIA-ZIF8@ZIF67 catalyst with a Pt loading of 0.86 wt. % exhibited exceptionally high activity for the HER in acidic conditions. The atomically dispersed Pt on the carbon substrate exhibited a small overpotential of 68.8 mV at 10 mA cm<sup>−2</sup> for the hydrogen evolution reaction with a mass activity 20.52 times that of a commercial Pt/C catalyst at an overpotential of 50 mV vs. RHE. Finally, we note that the synthesis method is simple, fast, and versatile, and potentially scalable for the mass production of SACs for electrocatalytic applications. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-01-01 |
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| series | Nanomaterials |
| spelling | doaj-art-0d08f09974e24b36b46c8608c3d8c6c12025-01-10T13:19:26ZengMDPI AGNanomaterials2079-49912025-01-011517810.3390/nano15010078Laser Synthesis of Platinum Single-Atom Catalysts for Hydrogen Evolution ReactionHengyi Guo0Lingtao Wang1Xuzhao Liu2Paul Mativenga3Zhu Liu4Andrew G. Thomas5Department of Materials, School of Natural Science, The University of Manchester, Oxford Road, Manchester M13 9PL, UKDepartment of Materials, School of Natural Science, The University of Manchester, Oxford Road, Manchester M13 9PL, UKDepartment of Materials, School of Natural Science, The University of Manchester, Oxford Road, Manchester M13 9PL, UKDepartment of Mechanical and Aerospace Engineering, The University of Manchester, Oxford Road, Manchester M13 9PL, UKNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 West Zhongguan Road, Zhenhai District, Ningbo 315201, ChinaDepartment of Materials, School of Natural Science, The University of Manchester, Oxford Road, Manchester M13 9PL, UKPlatinum (Pt)-based heterogeneous catalysts show excellent performance for the electrocatalytic hydrogen evolution reaction (HER); however, the high cost and earth paucity of Pt means that efforts are being directed to reducing Pt usage, whilst maximizing catalytic efficiency. In this work, a two-step laser annealing process was employed to synthesize Pt single-atom catalysts (SACs) on a MOF-derived carbon substrate. The laser irradiation of a metal–organic framework (MOF) film (ZIF67@ZIF8 composite) by rapid scanning of a ns pulsed infrared (IR; 1064 nm) laser across the freeze-dried MOF resulted in a metal-loaded graphitized film. This was followed by loading this film with chloroplatinic acid (H<sub>2</sub>PtCl<sub>6</sub>), followed by further irradiation with an ultraviolet (UV; 355 nm) laser, resulting in pyrolysis of H<sub>2</sub>PtCl<sub>6</sub> to form the SAC, along with a further reduction of the MOF to form a Pt-decorated laser-induced annealed MOF (Pt-LIA-ZIF8@ZIF67). The Pt-LIA-ZIF8@ZIF67 catalyst with a Pt loading of 0.86 wt. % exhibited exceptionally high activity for the HER in acidic conditions. The atomically dispersed Pt on the carbon substrate exhibited a small overpotential of 68.8 mV at 10 mA cm<sup>−2</sup> for the hydrogen evolution reaction with a mass activity 20.52 times that of a commercial Pt/C catalyst at an overpotential of 50 mV vs. RHE. Finally, we note that the synthesis method is simple, fast, and versatile, and potentially scalable for the mass production of SACs for electrocatalytic applications.https://www.mdpi.com/2079-4991/15/1/78single-atom catalystlaser manufacturinghydrogen evolution reaction (HER) |
| spellingShingle | Hengyi Guo Lingtao Wang Xuzhao Liu Paul Mativenga Zhu Liu Andrew G. Thomas Laser Synthesis of Platinum Single-Atom Catalysts for Hydrogen Evolution Reaction Nanomaterials single-atom catalyst laser manufacturing hydrogen evolution reaction (HER) |
| title | Laser Synthesis of Platinum Single-Atom Catalysts for Hydrogen Evolution Reaction |
| title_full | Laser Synthesis of Platinum Single-Atom Catalysts for Hydrogen Evolution Reaction |
| title_fullStr | Laser Synthesis of Platinum Single-Atom Catalysts for Hydrogen Evolution Reaction |
| title_full_unstemmed | Laser Synthesis of Platinum Single-Atom Catalysts for Hydrogen Evolution Reaction |
| title_short | Laser Synthesis of Platinum Single-Atom Catalysts for Hydrogen Evolution Reaction |
| title_sort | laser synthesis of platinum single atom catalysts for hydrogen evolution reaction |
| topic | single-atom catalyst laser manufacturing hydrogen evolution reaction (HER) |
| url | https://www.mdpi.com/2079-4991/15/1/78 |
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