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Size-Dependent Threshold of the Laser-Induced Phase Transition of Colloidally Dispersed Copper Oxide Nanoparticles

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Original languageEnglish
Pages (from-to)15263–15273
Number of pages11
JournalThe Journal of Physical Chemistry C
Volume126
Issue number36
Early online date1 Sept 2022
Publication statusPublished - 15 Sept 2022

Abstract

Due to their unique optical properties, nanoparticles are well suited for heating by laser irradiation. In this context, colloidally dispersed particles are of particular interest because in conventional ways of heating, the maximum attainable temperature is limited by the boiling point of the solvent. With the right choice of the used laser wavelength, it is possible to selectively heat these particles above the melting point of the material whereas the surrounding and laser-transparent medium remains comparatively cold. This type of laser process is called laser melting in liquids (LML). To further investigate the possibilities of laser-induced heating processes, colloidally dispersed copper(II) oxide (CuO) nanoparticles were synthesized, dispersed in ethanol, and irradiated with a nanosecond-pulsed Nd:YAG laser. In this way, a laser-induced phase transition into the copper richer copper(I) oxide (Cu2O) phase and into elemental copper can be observed. The conversion process is followed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), selected area electron diffraction (SAED), and UV-vis spectroscopy. It is shown that in the initial LML process a minimum particle size of 23-29 nm is required for a successful phase transition likely due to the size dependent heating efficiency, cooling effects, and the formation of nanobubbles.

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Size-Dependent Threshold of the Laser-Induced Phase Transition of Colloidally Dispersed Copper Oxide Nanoparticles. / Kranz, Daniel; Bessel, Patrick; Niemeyer, Max et al.
In: The Journal of Physical Chemistry C, Vol. 126, No. 36, 15.09.2022, p. 15263–15273.

Research output: Contribution to journalArticleResearchpeer review

Kranz D, Bessel P, Niemeyer M, Borg H, Rosebrock M, Himstedt R et al. Size-Dependent Threshold of the Laser-Induced Phase Transition of Colloidally Dispersed Copper Oxide Nanoparticles. The Journal of Physical Chemistry C. 2022 Sept 15;126(36):15263–15273. Epub 2022 Sept 1. doi: 10.1021/acs.jpcc.2c03815
Kranz, Daniel ; Bessel, Patrick ; Niemeyer, Max et al. / Size-Dependent Threshold of the Laser-Induced Phase Transition of Colloidally Dispersed Copper Oxide Nanoparticles. In: The Journal of Physical Chemistry C. 2022 ; Vol. 126, No. 36. pp. 15263–15273.
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title = "Size-Dependent Threshold of the Laser-Induced Phase Transition of Colloidally Dispersed Copper Oxide Nanoparticles",
abstract = "Due to their unique optical properties, nanoparticles are well suited for heating by laser irradiation. In this context, colloidally dispersed particles are of particular interest because in conventional ways of heating, the maximum attainable temperature is limited by the boiling point of the solvent. With the right choice of the used laser wavelength, it is possible to selectively heat these particles above the melting point of the material whereas the surrounding and laser-transparent medium remains comparatively cold. This type of laser process is called laser melting in liquids (LML). To further investigate the possibilities of laser-induced heating processes, colloidally dispersed copper(II) oxide (CuO) nanoparticles were synthesized, dispersed in ethanol, and irradiated with a nanosecond-pulsed Nd:YAG laser. In this way, a laser-induced phase transition into the copper richer copper(I) oxide (Cu2O) phase and into elemental copper can be observed. The conversion process is followed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), selected area electron diffraction (SAED), and UV-vis spectroscopy. It is shown that in the initial LML process a minimum particle size of 23-29 nm is required for a successful phase transition likely due to the size dependent heating efficiency, cooling effects, and the formation of nanobubbles.",
author = "Daniel Kranz and Patrick Bessel and Max Niemeyer and Hadir Borg and Marina Rosebrock and Rasmus Himstedt and Bigall, {Nadja C.} and Dirk Dorfs",
note = "Funding Information: N.C.B. and D.D. are grateful for funding by the German Research Foundation (DFG) under Germany{\textquoteright}s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC2122). D.K. thanks the Konrad-Adenauer-Stiftung (KAS) for the financial support. P.B. and R.H. are grateful for funding by the Hannover School of Nanotechnology (HSN). M.N. and D.D. acknowledge financial support by the German Research Foundation (DFG) Research Grant 1580/5-1. H.B., M.R., and N.C.B. thank the European Research Council (ERC) under the European Union{\textquoteright}s Horizon 2020 Research and Innovation Program (Grant Agreement 714429) for funding. The authors thank the Laboratory of Nano and Quantum Engineering (LNQE) for the use of the TEM and apl. Prof. Armin Feldhoff for the use of the XRD.",
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T1 - Size-Dependent Threshold of the Laser-Induced Phase Transition of Colloidally Dispersed Copper Oxide Nanoparticles

AU - Kranz, Daniel

AU - Bessel, Patrick

AU - Niemeyer, Max

AU - Borg, Hadir

AU - Rosebrock, Marina

AU - Himstedt, Rasmus

AU - Bigall, Nadja C.

AU - Dorfs, Dirk

N1 - Funding Information: N.C.B. and D.D. are grateful for funding by the German Research Foundation (DFG) under Germany’s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC2122). D.K. thanks the Konrad-Adenauer-Stiftung (KAS) for the financial support. P.B. and R.H. are grateful for funding by the Hannover School of Nanotechnology (HSN). M.N. and D.D. acknowledge financial support by the German Research Foundation (DFG) Research Grant 1580/5-1. H.B., M.R., and N.C.B. thank the European Research Council (ERC) under the European Union’s Horizon 2020 Research and Innovation Program (Grant Agreement 714429) for funding. The authors thank the Laboratory of Nano and Quantum Engineering (LNQE) for the use of the TEM and apl. Prof. Armin Feldhoff for the use of the XRD.

PY - 2022/9/15

Y1 - 2022/9/15

N2 - Due to their unique optical properties, nanoparticles are well suited for heating by laser irradiation. In this context, colloidally dispersed particles are of particular interest because in conventional ways of heating, the maximum attainable temperature is limited by the boiling point of the solvent. With the right choice of the used laser wavelength, it is possible to selectively heat these particles above the melting point of the material whereas the surrounding and laser-transparent medium remains comparatively cold. This type of laser process is called laser melting in liquids (LML). To further investigate the possibilities of laser-induced heating processes, colloidally dispersed copper(II) oxide (CuO) nanoparticles were synthesized, dispersed in ethanol, and irradiated with a nanosecond-pulsed Nd:YAG laser. In this way, a laser-induced phase transition into the copper richer copper(I) oxide (Cu2O) phase and into elemental copper can be observed. The conversion process is followed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), selected area electron diffraction (SAED), and UV-vis spectroscopy. It is shown that in the initial LML process a minimum particle size of 23-29 nm is required for a successful phase transition likely due to the size dependent heating efficiency, cooling effects, and the formation of nanobubbles.

AB - Due to their unique optical properties, nanoparticles are well suited for heating by laser irradiation. In this context, colloidally dispersed particles are of particular interest because in conventional ways of heating, the maximum attainable temperature is limited by the boiling point of the solvent. With the right choice of the used laser wavelength, it is possible to selectively heat these particles above the melting point of the material whereas the surrounding and laser-transparent medium remains comparatively cold. This type of laser process is called laser melting in liquids (LML). To further investigate the possibilities of laser-induced heating processes, colloidally dispersed copper(II) oxide (CuO) nanoparticles were synthesized, dispersed in ethanol, and irradiated with a nanosecond-pulsed Nd:YAG laser. In this way, a laser-induced phase transition into the copper richer copper(I) oxide (Cu2O) phase and into elemental copper can be observed. The conversion process is followed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), selected area electron diffraction (SAED), and UV-vis spectroscopy. It is shown that in the initial LML process a minimum particle size of 23-29 nm is required for a successful phase transition likely due to the size dependent heating efficiency, cooling effects, and the formation of nanobubbles.

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U2 - 10.1021/acs.jpcc.2c03815

DO - 10.1021/acs.jpcc.2c03815

M3 - Article

VL - 126

SP - 15263

EP - 15273

JO - The Journal of Physical Chemistry C

JF - The Journal of Physical Chemistry C

SN - 1932-7455

IS - 36

ER -

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