1
|
Rebrova N, Zdeb P, Lemański K, Macalik B, Bezkrovnyi O, Dereń P. Upconversion Luminescence Properties of Pr 3+-Doped BaYF 5 Nanoparticles Prepared by Microwave Hydrothermal Method. Inorg Chem 2024; 63:3028-3036. [PMID: 38295807 PMCID: PMC10865355 DOI: 10.1021/acs.inorgchem.3c03821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/11/2024] [Accepted: 01/17/2024] [Indexed: 02/16/2024]
Abstract
Pure and Pr3+-doped BaYF5 nanoparticles were synthesized by the microwave hydrothermal method. The nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and optical spectroscopy. The XRD and TEM confirm that the average size of nanoparticles is in the range of 26-37 nm. The optical excitation and luminescence spectra of BaYF5:Pr3+ nanoparticles are presented in the visible and ultraviolet (UV) range. It has been verified that Pr3+ ions are capable of emitting UV-C photons when excited by a 444 nm laser. This emission arises from a two-photon energy-transfer upconversion mechanism. The concentration dependence of the upconversion luminescence of BaYF5:Pr3+ was studied.
Collapse
Affiliation(s)
- Nadiia Rebrova
- Institute of Low Temperature
and Structure Research, Polish Academy of
Science, ul. Okólna 2, 50-422 Wrocław, Poland
| | - Patrycja Zdeb
- Institute of Low Temperature
and Structure Research, Polish Academy of
Science, ul. Okólna 2, 50-422 Wrocław, Poland
| | - Karol Lemański
- Institute of Low Temperature
and Structure Research, Polish Academy of
Science, ul. Okólna 2, 50-422 Wrocław, Poland
| | - Bogusław Macalik
- Institute of Low Temperature
and Structure Research, Polish Academy of
Science, ul. Okólna 2, 50-422 Wrocław, Poland
| | - Oleksii Bezkrovnyi
- Institute of Low Temperature
and Structure Research, Polish Academy of
Science, ul. Okólna 2, 50-422 Wrocław, Poland
| | - Przemysław
J. Dereń
- Institute of Low Temperature
and Structure Research, Polish Academy of
Science, ul. Okólna 2, 50-422 Wrocław, Poland
| |
Collapse
|
2
|
Dudek M, Korczak Z, Prorok K, Bezkrovnyi O, Sun L, Szalkowski M, Bednarkiewicz A. Understanding Yb 3+-sensitized photon avalanche in Pr 3+ co-doped nanocrystals: modelling and optimization. Nanoscale 2023; 15:18613-18623. [PMID: 37953740 DOI: 10.1039/d3nr04409b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Among different upconversion processes where the emitted photon has higher energy than the one absorbed, photon avalanche (PA) is unique, because the luminescence intensity increases by 2-3 orders of magnitude in response to a tiny increase in excitation intensity. Since its discovery in 1979, PA has been observed in bulk materials but until recently, obtaining it at the nanoscale has been a significant challenge. In the present work, the PA phenomenon in β-NaYF4 colloidal nanocrystals co-doped with Pr3+ and Yb3+ ions was successfully observed at 482 nm (3P0 → 3H4) and 607 nm (3P0 → 3H6) under excitation at 852 nm. The impact of Pr3+ ion concentration and pump power dependence on PA behavior was investigated, i.e. PA non-linearity slopes of luminescence intensity curves as a function of pump power density as well as PA thresholds. The highest slopes, namely 8.6 and 9.0, and the smallest thresholds equal to 286 kW cm-2 and 281 kW cm-2, observed for emission bands at 607 nm and 482 nm, respectively, were obtained for NaYF4:0.5%Pr3+,15%Yb3+@NaYF4 colloidal nanocrystals. Besides experimental research, simulations of PA behavior in Pr3+, Yb3+ co-doped materials were performed based on differential rate equations describing the phenomena that contribute to the existence of PA. The influence of different processes leading to PA, e.g. the rates of nonradiative and radiative transitions as well as energy transfers, on PA performance was simulated aiming to understand their roles in this complex sensitized system.
Collapse
Affiliation(s)
- Magdalena Dudek
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-422 Wroclaw, Poland.
| | - Zuzanna Korczak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-422 Wroclaw, Poland.
| | - Katarzyna Prorok
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-422 Wroclaw, Poland.
| | - Oleksii Bezkrovnyi
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-422 Wroclaw, Poland.
| | - Lining Sun
- Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Marcin Szalkowski
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-422 Wroclaw, Poland.
- Nanophotonics Group, Institute of Physics, Faculty of Physics Astronomy and Informatics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5, 87-100 Toruń, Poland
| | - Artur Bednarkiewicz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-422 Wroclaw, Poland.
| |
Collapse
|
3
|
Pinchuk N, Paściak A, Paściak G, Sobierajska P, Chmielowiec J, Bezkrovnyi O, Kraszkiewicz P, Wiglusz RJ. Photothermal Conversion Efficiency of Silver and Gold Incorporated Nanosized Apatites for Biomedical Applications. ACS Omega 2023; 8:41302-41309. [PMID: 37970002 PMCID: PMC10633896 DOI: 10.1021/acsomega.3c04809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/26/2023] [Accepted: 10/04/2023] [Indexed: 11/17/2023]
Abstract
The aim of this research was to investigate the photothermal ability of nanocrystalline hydroxyapatite (nHAp) incorporated with silver and gold. It was studied by using a recently developed technique evaluating the photothermal conversion efficiency. The heating performance of aqueous dispersions was examined under 445 and 532 nm excitation. The largest increase in temperature was found for the 2% Ag-nHAp and reached above 2 °C per mg/mL of sample (445 nm) under 90 mW laser continuous irradiation and an external light-to-heat conversion efficiency of 0.11 L/g cm. The obtained results have shown a new functionality of nanosized apatites that has not been considered before. The studied materials have also been characterized by XRPD, TEM, BET, and UV-Vis techniques. Finally, in this work, a new idea for their application was proposed: photothermal therapy.
Collapse
Affiliation(s)
- Nataliia
D. Pinchuk
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw 50-422, Poland
- Frantsevich
Institute for Problems of Materials Science of NAS of Ukraine, Kyiv 03142, Ukraine
| | - Agnieszka Paściak
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw 50-422, Poland
- Wroclaw
University of Science and Technology, The Faculty of Fundamental Problems
of Technology, 50-370 Wroclaw, Poland
| | - Grzegorz Paściak
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw 50-422, Poland
| | - Paulina Sobierajska
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw 50-422, Poland
| | - Jacek Chmielowiec
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw 50-422, Poland
| | - Oleksii Bezkrovnyi
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw 50-422, Poland
| | - Piotr Kraszkiewicz
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw 50-422, Poland
| | - Rafal J. Wiglusz
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw 50-422, Poland
- Department
of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland
| |
Collapse
|
4
|
Piliai L, Matvija P, Dinhová TN, Khalakhan I, Skála T, Doležal Z, Bezkrovnyi O, Kepinski L, Vorokhta M, Matolínová I. In Situ Spectroscopy and Microscopy Insights into the CO Oxidation Mechanism on Au/CeO 2(111). ACS Appl Mater Interfaces 2022; 14:56280-56289. [PMID: 36484234 DOI: 10.1021/acsami.2c15792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In this work, we prepared and investigated in ultra-high vacuum (UHV) two stoichiometric CeO2(111) surfaces containing low and high amounts of step edges decorated with 0.05 ML of gold using synchrotron-radiation photoelectron spectroscopy (SRPES) and scanning tunneling microscopy (STM). The UHV study helped to solve the still unresolved puzzle on how the one-monolayer-high ceria step edges affect the metal-substrate interaction between Au and the CeO2(111) surface. It was found that the concentration of ionic Au+ species on the ceria surface increases with increasing number of ceria step edges and is not correlated with the concentration of Ce3+ ions that are supposed to form on the surface after its interaction with gold nanoparticles. We associated this with an additional channel of Au+ formation on the surface of CeO2(111) related to the interaction of Au atoms with various peroxo oxygen species formed at the ceria step edges during the film growth. The study of CO oxidation on the highly stepped Au/CeO2(111) model sample was performed by combining near-ambient-pressure X-ray photoelectron spectroscopy (NAP-XPS), UHV-STM, and near-ambient-pressure STM (NAP-STM). This powerful combination provided comprehensive information on the processes occurring on the Au/CeO2(111) surface during the interaction with CO, O2, and CO + O2 (1:1) mixture at conditions close to the real working conditions of CO oxidation. It was found that the system demonstrates high stability in CO. However, the surface undergoes substantial chemical and morphological changes as the O2 is added to the reaction cell. Already at 300 K, gold nanoparticles begin to grow using a mechanism that involves the disintegration of small gold nanoparticles in favor of the large ones. With increasing temperature, the model catalyst quickly transforms into a system of primarily large Au particles that contains no ionic gold species.
Collapse
Affiliation(s)
- Lesia Piliai
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Peter Matvija
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Thu Ngan Dinhová
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Ivan Khalakhan
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Tomas Skála
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Zdeněk Doležal
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Oleksii Bezkrovnyi
- W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
| | - Leszek Kepinski
- W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
| | - Mykhailo Vorokhta
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Iva Matolínová
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| |
Collapse
|
5
|
Bezkrovnyi O, Bruix A, Blaumeiser D, Piliai L, Schötz S, Bauer T, Khalakhan I, Skála T, Matvija P, Kraszkiewicz P, Pawlyta M, Vorokhta M, Matolínová I, Libuda J, Neyman KM, Kȩpiński L. Metal-Support Interaction and Charge Distribution in Ceria-Supported Au Particles Exposed to CO. Chem Mater 2022; 34:7916-7936. [PMID: 36117879 PMCID: PMC9476549 DOI: 10.1021/acs.chemmater.2c01659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Understanding how reaction conditions affect metal-support interactions in catalytic materials is one of the most challenging tasks in heterogeneous catalysis research. Metal nanoparticles and their supports often undergo changes in structure and oxidation state when exposed to reactants, hindering a straightforward understanding of the structure-activity relations using only ex situ or ultrahigh vacuum techniques. Overcoming these limitations, we explored the metal-support interaction between gold nanoparticles and ceria supports in ultrahigh vacuum and after exposure to CO. A combination of in situ methods (on powder and model Au/CeO2 samples) and theoretical calculations was applied to investigate the gold/ceria interface and its reactivity toward CO exposure. X-ray photoelectron spectroscopy measurements rationalized by first-principles calculations reveal a distinctly inhomogeneous charge distribution, with Au+ atoms in contact with the ceria substrate and neutral Au0 atoms at the surface of the Au nanoparticles. Exposure to CO partially reduces the ceria substrate, leading to electron transfer to the supported Au nanoparticles. Transferred electrons can delocalize among the neutral Au atoms of the particle or contribute to forming inert Auδ- atoms near oxygen vacancies at the ceria surface. This charge redistribution is consistent with the evolution of the vibrational frequencies of CO adsorbed on Au particles obtained using diffuse reflectance infrared Fourier transform spectroscopy.
Collapse
Affiliation(s)
- Oleksii Bezkrovnyi
- W.
Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
| | - Albert Bruix
- Departament
de Ciència de Materials i Química Física and
Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Dominik Blaumeiser
- Interface
Research and Catalysis, Erlangen Center for Interface Research and
Catalysis, Friedrich-Alexander Universität
Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Lesia Piliai
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Simon Schötz
- Interface
Research and Catalysis, Erlangen Center for Interface Research and
Catalysis, Friedrich-Alexander Universität
Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Tanja Bauer
- Interface
Research and Catalysis, Erlangen Center for Interface Research and
Catalysis, Friedrich-Alexander Universität
Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Ivan Khalakhan
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Tomáš Skála
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Peter Matvija
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Piotr Kraszkiewicz
- W.
Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
| | - Mirosława Pawlyta
- Materials
Research Laboratory, Silesian University
of Technology, Gliwice 44-100, Poland
| | - Mykhailo Vorokhta
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Iva Matolínová
- Department
of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000, Prague 8, Czech Republic
| | - Jörg Libuda
- Interface
Research and Catalysis, Erlangen Center for Interface Research and
Catalysis, Friedrich-Alexander Universität
Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - Konstantin M. Neyman
- Departament
de Ciència de Materials i Química Física and
Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, 08028 Barcelona, Spain
- ICREA
(Institució Catalana de Recerca i Estudis Avançats), 08010 Barcelona, Spain
| | - Leszek Kȩpiński
- W.
Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
| |
Collapse
|
6
|
Paściak A, Marin R, Abiven L, Pilch-Wróbel A, Misiak M, Xu W, Prorok K, Bezkrovnyi O, Marciniak Ł, Chaneac C, Gazeau F, Bazzi R, Roux S, Viana B, Lehto VP, Jaque D, Bednarkiewicz A. Correction to "Quantitative Comparison of the Light-to-Heat Conversion Efficiency in Nanomaterials Suitable for Photothermal Therapy". ACS Appl Mater Interfaces 2022; 14:39679-39680. [PMID: 35972297 PMCID: PMC9437890 DOI: 10.1021/acsami.2c13851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Indexed: 06/15/2023]
|
7
|
Paściak A, Marin R, Abiven L, Pilch-Wróbel A, Misiak M, Xu W, Prorok K, Bezkrovnyi O, Marciniak Ł, Chanéac C, Gazeau F, Bazzi R, Roux S, Viana B, Lehto VP, Jaque D, Bednarkiewicz A. Quantitative Comparison of the Light-to-Heat Conversion Efficiency in Nanomaterials Suitable for Photothermal Therapy. ACS Appl Mater Interfaces 2022; 14:33555-33566. [PMID: 35848997 PMCID: PMC9335407 DOI: 10.1021/acsami.2c08013] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 07/01/2022] [Indexed: 05/20/2023]
Abstract
Functional colloidal nanoparticles capable of converting between various energy types are finding an increasing number of applications. One of the relevant examples concerns light-to-heat-converting colloidal nanoparticles that may be useful for localized photothermal therapy of cancers. Unfortunately, quantitative comparison and ranking of nanoheaters are not straightforward as materials of different compositions and structures have different photophysical and chemical properties and may interact differently with the biological environment. In terms of photophysical properties, the most relevant information to rank these nanoheaters is the light-to-heat conversion efficiency, which, along with information on the absorption capacity of the material, can be used to directly compare materials. In this work, we evaluate the light-to-heat conversion properties of 17 different nanoheaters belonging to different groups (plasmonic, semiconductor, lanthanide-doped nanocrystals, carbon nanocrystals, and metal oxides). We conclude that the light-to-heat conversion efficiency alone is not meaningful enough as many materials have similar conversion efficiencies─in the range of 80-99%─while they significantly differ in their extinction coefficient. We therefore constructed their qualitative ranking based on the external conversion efficiency, which takes into account the conventionally defined light-to-heat conversion efficiency and its absorption capacity. This ranking demonstrated the differences between the samples more meaningfully. Among the studied systems, the top-ranking materials were black porous silicon and CuS nanocrystals. These results allow us to select the most favorable materials for photo-based theranostics and set a new standard in the characterization of nanoheaters.
Collapse
Affiliation(s)
- Agnieszka Paściak
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wroclaw, Poland
| | - Riccardo Marin
- Nanomaterials
for Bioimaging Group (nanoBIG), Departamento de Física de Materiales,
Facultad de Ciencias, Universidad Autónoma
de Madrid, C/Francisco Tomás y Valiente 7, Madrid 28049, Spain
| | - Lise Abiven
- Sorbonne
Université, CNRS, Laboratoire de Chimie de la Matière
Condensée de Paris, UMR 7574, 4 Place Jussieu, F-75005 Paris, France
| | - Aleksandra Pilch-Wróbel
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wroclaw, Poland
| | - Małgorzata Misiak
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wroclaw, Poland
| | - Wujun Xu
- Department
of Applied Physics, University of Eastern
Finland, 70211 Kuopio, Finland
| | - Katarzyna Prorok
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wroclaw, Poland
| | - Oleksii Bezkrovnyi
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wroclaw, Poland
| | - Łukasz Marciniak
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wroclaw, Poland
| | - Corinne Chanéac
- Sorbonne
Université, CNRS, Laboratoire de Chimie de la Matière
Condensée de Paris, UMR 7574, 4 Place Jussieu, F-75005 Paris, France
| | - Florence Gazeau
- Université
Paris Cité, CNRS, Matière et Systèmes Complexes, F75006 Paris, France
| | - Rana Bazzi
- Institut
UTINAM, UMR 6213 CNRS-UBFC, Université
Bourgogne Franche-Comté, 16 route de Gray, 25030 Besançon, Cedex, France
| | - Stéphane Roux
- Institut
UTINAM, UMR 6213 CNRS-UBFC, Université
Bourgogne Franche-Comté, 16 route de Gray, 25030 Besançon, Cedex, France
| | - Bruno Viana
- Chimie
ParisTech, CNRS, Institut de Recherche de Chimie Paris, PSL Research University, 11 rue P. et M. Curie, F-75231 Paris, Cedex 05, France
| | - Vesa-Pekka Lehto
- Department
of Applied Physics, University of Eastern
Finland, 70211 Kuopio, Finland
| | - Daniel Jaque
- Nanomaterials
for Bioimaging Group (nanoBIG), Departamento de Física de Materiales,
Facultad de Ciencias, Universidad Autónoma
de Madrid, C/Francisco Tomás y Valiente 7, Madrid 28049, Spain
| | - Artur Bednarkiewicz
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wroclaw, Poland
| |
Collapse
|
8
|
Woźniak P, Małecka MA, Kraszkiewicz P, Miśta W, Bezkrovnyi O, Chinchilla L, Trasobares S. Confinement of nano-gold in 3D hierarchically structured gadolinium-doped ceria mesocrystal: synergistic effect of chemical composition and structural hierarchy in CO and propane oxidation. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01214f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gadolinium-doped ceria hierarchical gold catalyst shows four-fold TOF increase compared to undoped non-hierarchical system, proving the synergistic effect of doping and structural hierarchy in propane oxidation.
Collapse
Affiliation(s)
- Piotr Woźniak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
| | - Małgorzata A. Małecka
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
| | - Piotr Kraszkiewicz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
| | - Włodzimierz Miśta
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
| | - Oleksii Bezkrovnyi
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
| | - Lidia Chinchilla
- Departamento de Ciencia de los Materiales e Ing. Metalúrgica y Química Inorgánica, Universidad de Cádiz, Campus Universitario de Puerto Real, 11510, Cádiz, Spain
| | - Susana Trasobares
- Departamento de Ciencia de los Materiales e Ing. Metalúrgica y Química Inorgánica, Universidad de Cádiz, Campus Universitario de Puerto Real, 11510, Cádiz, Spain
| |
Collapse
|
9
|
Nawrot KC, Wawrzyńczyk D, Bezkrovnyi O, Kępiński L, Cichy B, Samoć M, Nyk M. Functional CdS-Au Nanocomposite for Efficient Photocatalytic, Photosensitizing, and Two-Photon Applications. Nanomaterials (Basel) 2020; 10:nano10040715. [PMID: 32290061 PMCID: PMC7221832 DOI: 10.3390/nano10040715] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/05/2020] [Accepted: 04/07/2020] [Indexed: 11/16/2022]
Abstract
We demonstrate a low-temperature synthesis of hydrophilic, penicillamine-stabilized hybrid CdS-Au nanoparticles (NPs) utilizing different Au concentrations. The obtained hybrid nanomaterials exhibit photoluminescence quenching and emission lifetime reduction in comparison with their raw semiconductor CdS NPs counterparts. An increase of concentration of Au present at the surface of CdS leads to lower photoluminescence intensity and faster emission decays, suggesting more efficient charge separation when larger Au domains are present. For photocatalysis studies, we performed methylene blue (MB) absorption measurements under irradiation in the presence of CdS-Au NPs. After 1 h of light exposure, we observed the absorbance decrease to about 35% and 10% of the initial value for the CdS-5Au and CdS-7.5Au (the hybrid NPs obtained in a presence of 5.0 and 7.5 mM Au), respectively, which indicates MB reduction caused by electrons effectively separated from holes on metal surface. In further similar photocatalysis experiments, we measured bovine serum albumin (BSA) integrated photoluminescence intensity quenching in the presence of CdS-Au NPs, with a 50% decrease being obtained for CdS-2.5Au NPs and CdS-5Au NPs, with a faster response rate detected for the system prepared with a higher Au concentration. The results suggest hole-driven reactive oxygen species (ROS) production, causing BSA degeneration. Finally, we performed two-photon excited emission (TPEE) measurements for CdS-5Au NPs, obtaining their two-photon absorption (TPA) cross-section values up to 15.8 × 103 GM (Goeppert-Mayer units). We conclude that the obtained water-soluble CdS-Au NPs exhibit potential triple functionalities as photocatalysts for reduction and oxidation reactions as well as materials for two-photon absorption applications, so that they may be considered as future theranostics.
Collapse
Affiliation(s)
- Katarzyna C. Nawrot
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland; (K.C.N.); (D.W.); (M.S.)
| | - Dominika Wawrzyńczyk
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland; (K.C.N.); (D.W.); (M.S.)
| | - Oleksii Bezkrovnyi
- W. Trzebiatowski Institute of Low Temperature and Structure Research Polish Academy of Sciences, Okólna 2, 50-422 Wroclaw, Poland; (O.B.); (L.K.); (B.C.)
| | - Leszek Kępiński
- W. Trzebiatowski Institute of Low Temperature and Structure Research Polish Academy of Sciences, Okólna 2, 50-422 Wroclaw, Poland; (O.B.); (L.K.); (B.C.)
| | - Bartłomiej Cichy
- W. Trzebiatowski Institute of Low Temperature and Structure Research Polish Academy of Sciences, Okólna 2, 50-422 Wroclaw, Poland; (O.B.); (L.K.); (B.C.)
| | - Marek Samoć
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland; (K.C.N.); (D.W.); (M.S.)
| | - Marcin Nyk
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland; (K.C.N.); (D.W.); (M.S.)
- Correspondence: ; Tel.: +48-71-320-2316
| |
Collapse
|
10
|
Bezkrovnyi O, Małecka MA, Lisiecki R, Ostroushko V, Thomas AG, Gorantla S, Kepinski L. The effect of Eu doping on the growth, structure and red-ox activity of ceria nanocubes. CrystEngComm 2018. [DOI: 10.1039/c8ce00155c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ordering of oxygen vacancies (in high Eu-doped (x ≥ 0.1) ceria nanoparticles) facilitates the process of Ce4+ to Ce3+ reduction.
Collapse
Affiliation(s)
- Oleksii Bezkrovnyi
- W. Trzebiatowski Institute of Low Temperature and Structure Research Polish Academy of Sciences
- Wroclaw
- Poland
| | - Małgorzata A. Małecka
- W. Trzebiatowski Institute of Low Temperature and Structure Research Polish Academy of Sciences
- Wroclaw
- Poland
| | - Radoslaw Lisiecki
- W. Trzebiatowski Institute of Low Temperature and Structure Research Polish Academy of Sciences
- Wroclaw
- Poland
| | | | - Andrew G. Thomas
- School of Materials and the Photon Science Institute
- The University of Manchester
- UK
| | | | - Leszek Kepinski
- W. Trzebiatowski Institute of Low Temperature and Structure Research Polish Academy of Sciences
- Wroclaw
- Poland
| |
Collapse
|