Chemical and Laser Ablation Synthesis of Monometallic and Bimetallic Ni-Based Nanoparticles
The catalytic properties of nanoparticles depend on their size, shape and surface/defect structure, with the entire catalyst performance being governed by the corresponding distributions. Herein, we present two routes of mono- and bimetallic nanoparticle synthesis that enable control of the structur...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/10/12/1453 |
| _version_ | 1797544953210994688 |
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| author | Niusha Lasemi Günther Rupprechter |
| author_facet | Niusha Lasemi Günther Rupprechter |
| author_sort | Niusha Lasemi |
| collection | DOAJ |
| description | The catalytic properties of nanoparticles depend on their size, shape and surface/defect structure, with the entire catalyst performance being governed by the corresponding distributions. Herein, we present two routes of mono- and bimetallic nanoparticle synthesis that enable control of the structural parameters, i.e., wet-chemical synthesis and laser ablation in liquid-phase. The latter is particularly suited to create defect-rich nanoparticles. Impregnation routes were applied to prepare Ni and NiCu nanoparticles, whereas nano- and femtosecond laser ablation in liquid-phase were employed to prepare Ni and NiAu nanoparticles. The effects of the Ni:Cu ratio in impregnation and of laser fluence and liquid-medium on laser ablation are discussed. The atomic structure and (surface) composition of the nanoparticles were characterized by electron microscopic (BF-TEM, DF-TEM, HRTEM) and spectroscopic/diffraction techniques (EDX, SAED, XPS, IR), complemented by theory (DFT). The chemically synthesized bimetallic NiCu nanoparticles initially had Cu-rich surfaces, which changed to Ni-rich upon reaction. For laser ablation, depending on conditions (fluence, type of liquid), highly defective, ordered, or core/shell-like nanoparticles were produced. The case studies highlight the specific benefits of each preparation method for catalyst synthesis and discuss the potential of nanoparticles produced by pulsed laser ablation for catalytic applications. |
| first_indexed | 2024-03-10T14:08:47Z |
| format | Article |
| id | doaj.art-5de9d7f57bfd499cb29e1dbd8a9057da |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T14:08:47Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-5de9d7f57bfd499cb29e1dbd8a9057da2023-11-21T00:24:37ZengMDPI AGCatalysts2073-43442020-12-011012145310.3390/catal10121453Chemical and Laser Ablation Synthesis of Monometallic and Bimetallic Ni-Based NanoparticlesNiusha Lasemi0Günther Rupprechter1Institute of Materials Chemistry, Technische Universität Wien, Getreidemarkt 9/BC, 1060 Wien, AustriaInstitute of Materials Chemistry, Technische Universität Wien, Getreidemarkt 9/BC, 1060 Wien, AustriaThe catalytic properties of nanoparticles depend on their size, shape and surface/defect structure, with the entire catalyst performance being governed by the corresponding distributions. Herein, we present two routes of mono- and bimetallic nanoparticle synthesis that enable control of the structural parameters, i.e., wet-chemical synthesis and laser ablation in liquid-phase. The latter is particularly suited to create defect-rich nanoparticles. Impregnation routes were applied to prepare Ni and NiCu nanoparticles, whereas nano- and femtosecond laser ablation in liquid-phase were employed to prepare Ni and NiAu nanoparticles. The effects of the Ni:Cu ratio in impregnation and of laser fluence and liquid-medium on laser ablation are discussed. The atomic structure and (surface) composition of the nanoparticles were characterized by electron microscopic (BF-TEM, DF-TEM, HRTEM) and spectroscopic/diffraction techniques (EDX, SAED, XPS, IR), complemented by theory (DFT). The chemically synthesized bimetallic NiCu nanoparticles initially had Cu-rich surfaces, which changed to Ni-rich upon reaction. For laser ablation, depending on conditions (fluence, type of liquid), highly defective, ordered, or core/shell-like nanoparticles were produced. The case studies highlight the specific benefits of each preparation method for catalyst synthesis and discuss the potential of nanoparticles produced by pulsed laser ablation for catalytic applications.https://www.mdpi.com/2073-4344/10/12/1453nanoparticle synthesispulsed laser ablation in liquidsnickelnickel-goldbimetallicselectron microscopy |
| spellingShingle | Niusha Lasemi Günther Rupprechter Chemical and Laser Ablation Synthesis of Monometallic and Bimetallic Ni-Based Nanoparticles Catalysts nanoparticle synthesis pulsed laser ablation in liquids nickel nickel-gold bimetallics electron microscopy |
| title | Chemical and Laser Ablation Synthesis of Monometallic and Bimetallic Ni-Based Nanoparticles |
| title_full | Chemical and Laser Ablation Synthesis of Monometallic and Bimetallic Ni-Based Nanoparticles |
| title_fullStr | Chemical and Laser Ablation Synthesis of Monometallic and Bimetallic Ni-Based Nanoparticles |
| title_full_unstemmed | Chemical and Laser Ablation Synthesis of Monometallic and Bimetallic Ni-Based Nanoparticles |
| title_short | Chemical and Laser Ablation Synthesis of Monometallic and Bimetallic Ni-Based Nanoparticles |
| title_sort | chemical and laser ablation synthesis of monometallic and bimetallic ni based nanoparticles |
| topic | nanoparticle synthesis pulsed laser ablation in liquids nickel nickel-gold bimetallics electron microscopy |
| url | https://www.mdpi.com/2073-4344/10/12/1453 |
| work_keys_str_mv | AT niushalasemi chemicalandlaserablationsynthesisofmonometallicandbimetallicnibasednanoparticles AT guntherrupprechter chemicalandlaserablationsynthesisofmonometallicandbimetallicnibasednanoparticles |