Formation Mechanism of Laser-Synthesized Iron-Manganese Alloy Nanoparticles, Manganese Oxide Nanosheets and Nanofibers

Zhang, Dongshi; Ma, Zheng; Spasova, Marina; Yelsukova, A. E.; Lu, Suwei; Farle, Michael; Wiedwald, Ulf; Gökce, Bilal

doi:10.1002/ppsc.201600225

Cited by 39 publications

(40 citation statements)

References 81 publications

(113 reference statements)

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“…A similar influence of the liquid (water and ethanol solutions) on the alloy nanoparticle composition and morphology was reported by Zhang et al. in case of ignoble Fe−Mn nanoalloys . Simao et al.…”

Section: Laser‐based Materials Design: Multi‐elemental Nanoparticlessupporting

confidence: 78%

“…Yet, based on the recent laser‐based methods, defined bimetallic nanoparticle ultra‐structures are already accessible for catalytic studies to date . Figure summarizes the main types of bimetallic nanostructures together with corresponding laser‐generated exemplary nanomaterials available amongst others.…”

Section: Laser‐based Materials Design: Multi‐elemental Nanoparticlesmentioning

confidence: 99%

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Perspective of Surfactant‐Free Colloidal Nanoparticles in Heterogeneous Catalysis

et al. 2019

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Due to material gaps and synthesis‐related cross‐correlations in heterogeneous catalysis, chemists and physicists are constantly motivated to develop novel catalyst preparation methods for independent control of morphology, size, and composition. Within this article, advances, opportunities, and the current limits of laser‐based catalyst preparation technique, as well as synergies with conventional methods will be reviewed in terms of purity, particle size, morphology, composition, and nanoparticle‐support interaction. It will be shown, that the surfactant‐free particles represent ideal model materials to validate kinetic models and conduct parametric activity studies by independent adjustment of functional properties like nanoparticle size, composition, and load. Consequently, the importance of transient plasma dynamics tailoring nanoparticle formation will be pointed out, comparing experimental studies with own calculations and novel simulations taken from literature. Finally, perspectives of surfactant‐free colloidal nanoparticles for unrevealing active sites in heterogeneous catalysts are presented.

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Section: Laser‐based Materials Design: Multi‐elemental Nanoparticlessupporting

confidence: 78%

Section: Laser‐based Materials Design: Multi‐elemental Nanoparticlesmentioning

confidence: 99%

Perspective of Surfactant‐Free Colloidal Nanoparticles in Heterogeneous Catalysis

et al. 2019

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“…LAL is a combined top‐down and bottom‐up nanomaterial synthetic technique. A pulsed laser is focused on a target that is immersed in a liquid (e.g., water, ionic liquid, organic solvent, surfactant, or polymer‐containing solution or liquid mixture). After laser ablation, the nanomaterials are obtained, leaving behind the ablated grooves .…”

Section: Lspc Techniquementioning

confidence: 99%

“…There are many possible growth routes for the tiny particles (<10 nm) to evolve into different nanostructures, as summarized in ref. , including LaMer‐like mechanism, reaction‐induced growth, adsorbate‐induced growth, coalescence, Ostwald ripening, particle attachment, self‐assembly, and self‐splitting . Owing to the large variety of plasma‐induced ions and atoms, nanomaterials such as metals, alloys, oxides, hydroxides, carbides, nitrides, and NP–polymer composites are achievable by LAL …”

Section: Lspc Techniquementioning

confidence: 99%

Recent Advances in Surfactant‐Free, Surface‐Charged, and Defect‐Rich Catalysts Developed by Laser Ablation and Processing in Liquids

Zhang

et al. 2017

ChemNanoMat

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108

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For excellence in the synthesis of highly active metal and oxide catalysts, a newly emerging technique—laser synthesis and processing of colloids (LSPC)—is gaining increasing attention for catalytic applications, such as water splitting, fuel cells, and photodegradation of organic pollutants. The advantages of using LSPC‐synthesized metal catalysts have been reviewed elsewhere [Chem. Rev. 2017, 117, 3990–4103]. Herein, current challenges related to the properties (surface chemistry and particle evolution) of metal catalysts synthesized by laser ablation in liquids/laser processing in liquids are discussed. The main focus is on the advantages of LSPC in surfactant‐free defect engineering of oxide nanoparticles. Compared with other techniques (e.g., hydrogenation), LSPC provides a unique platform to simultaneously introduce oxygen vacancies and surface disorders into oxide (e.g., TiO2) nanomaterials; thus allowing narrowing of the band gap from both conduction and valence bands. Defect‐rich oxides have versatile uses, such as being directly applied as photocatalysts and as building blocks to construct supported, doped, and ternary oxide photocatalysts for electrochemical and photocatalytic applications. The LSPC‐synthesized catalysts are promising for applications as commercial catalysts in light of their higher activities than those of current Pt/C and P25 TiO2 commercial catalysts.

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“…on laser ablation in liquid (LAL), LAL has been demonstrated to be a scalable56 method for microparticle and nanoparticle synthesis that allows precise size control of the synthesized colloidal nanoparticles over a wide range from several micrometers7 to ~1 nanometer8. Due to applicability to most elements of the periodic table9, LAL is suited to produce a large variety of nanomaterials, including elemental particles10, oxides11, carbides12 as well as nanoalloy particles131415, nanoparticle-polymer composites161718, doped and undoped phosphor NPs19 and magnetic-chains2021. More recently, the LAL-derivative techniques of laser fragmentation in liquid (LFL) and laser melting in liquid (LML) were developed.…”

mentioning

confidence: 99%

Germanium Sub-Microspheres Synthesized by Picosecond Pulsed Laser Melting in Liquids: Educt Size Effects

Zhang

Lau

et al. 2017

Sci Rep

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Pulsed laser melting in liquid (PLML) has emerged as a facile approach to synthesize submicron spheres (SMSs) for various applications. Typically lasers with long pulse durations in the nanosecond regime are used. However, recent findings show that during melting the energy absorbed by the particle will be dissipated promptly after laser-matter interaction following the temperature decrease within tens of nanoseconds and hence limiting the efficiency of longer pulse widths. Here, the feasibility to utilize a picosecond laser to synthesize Ge SMSs (200~1000 nm in diameter) is demonstrated by irradiating polydisperse Ge powders in water and isopropanol. Through analyzing the educt size dependent SMSs formation mechanism, we find that Ge powders (200~1000 nm) are directly transformed into SMSs during PLML via reshaping, while comparatively larger powders (1000~2000 nm) are split into daughter SMSs via liquid droplet bisection. Furthermore, the contribution of powders larger than 2000 nm and smaller than 200 nm to form SMSs is discussed. This work shows that compared to nanosecond lasers, picosecond lasers are also suitable to produce SMSs if the pulse duration is longer than the material electron-phonon coupling period to allow thermal relaxation.

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Formation Mechanism of Laser-Synthesized Iron-Manganese Alloy Nanoparticles, Manganese Oxide Nanosheets and Nanofibers

Cited by 39 publications

References 81 publications

Perspective of Surfactant‐Free Colloidal Nanoparticles in Heterogeneous Catalysis

Perspective of Surfactant‐Free Colloidal Nanoparticles in Heterogeneous Catalysis

Recent Advances in Surfactant‐Free, Surface‐Charged, and Defect‐Rich Catalysts Developed by Laser Ablation and Processing in Liquids

Germanium Sub-Microspheres Synthesized by Picosecond Pulsed Laser Melting in Liquids: Educt Size Effects

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