Iridium-Based Nanohybrids: Synthesis, Characterization, Optical Limiting, and Nonlinear Optical Properties
The present work reports on the synthesis and characterization of iridium (Ir)-based nanohybrids with variable chemical compositions. More specifically, highly stable polyvinylpyrrolidone (PVP) nanohybrids of the PVP-IrO<sub>2</sub> and PVP-Ir/IrO<sub>2</sub> types, as well a...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-07-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/13/14/2131 |
| _version_ | 1797587958751035392 |
|---|---|
| author | Nikolaos Chazapis Michalis Stavrou Georgia Papaparaskeva Alexander Bunge Rodica Turcu Theodora Krasia-Christoforou Stelios Couris |
| author_facet | Nikolaos Chazapis Michalis Stavrou Georgia Papaparaskeva Alexander Bunge Rodica Turcu Theodora Krasia-Christoforou Stelios Couris |
| author_sort | Nikolaos Chazapis |
| collection | DOAJ |
| description | The present work reports on the synthesis and characterization of iridium (Ir)-based nanohybrids with variable chemical compositions. More specifically, highly stable polyvinylpyrrolidone (PVP) nanohybrids of the PVP-IrO<sub>2</sub> and PVP-Ir/IrO<sub>2</sub> types, as well as non-coated Ir/IrO<sub>2</sub> nanoparticles, are synthesized using different synthetic protocols and characterized in terms of their chemical composition and morphology via X-ray photoelectron spectroscopy (XPS) and scanning transmission electron microscopy (STEM), respectively. Furthermore, their nonlinear optical (NLO) response and optical limiting (OL) efficiency are studied by means of the Z-scan technique, employing 4 ns laser pulses at 532 and 1064 nm. The results demonstrate that the PVP-Ir/IrO<sub>2</sub> and Ir/IrO<sub>2</sub> systems exhibit exceptional OL performance, while PVP-IrO<sub>2</sub> presents very strong saturable absorption (SA) behavior, indicating that the present Ir-based nanohybrids could be strong competitors to other nanostructured materials for photonic and optoelectronic applications. In addition, the findings denote that the variation in the content of IrO<sub>2</sub> nanoparticles by using different synthetic pathways significantly affects the NLO response of the studied Ir-based nanohybrids, suggesting that the choice of the appropriate synthetic method could lead to tailor-made NLO properties for specific applications in photonics and optoelectronics. |
| first_indexed | 2024-03-11T00:46:15Z |
| format | Article |
| id | doaj.art-b74f00ed65e049e2b1fe8cad4c4c4140 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T00:46:15Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-b74f00ed65e049e2b1fe8cad4c4c41402023-11-18T20:46:28ZengMDPI AGNanomaterials2079-49912023-07-011314213110.3390/nano13142131Iridium-Based Nanohybrids: Synthesis, Characterization, Optical Limiting, and Nonlinear Optical PropertiesNikolaos Chazapis0Michalis Stavrou1Georgia Papaparaskeva2Alexander Bunge3Rodica Turcu4Theodora Krasia-Christoforou5Stelios Couris6Department of Physics, University of Patras, 26504 Patras, GreeceDepartment of Physics, University of Patras, 26504 Patras, GreeceDepartment of Mechanical and Manufacturing Engineering, University of Cyprus, 1 Panepistimiou Avenue, Aglantzia, Nicosia 2109, CyprusNational Institute R&D of Isotopic and Molecular Technologies, 400293 Cluj-Napoca, RomaniaNational Institute R&D of Isotopic and Molecular Technologies, 400293 Cluj-Napoca, RomaniaDepartment of Mechanical and Manufacturing Engineering, University of Cyprus, 1 Panepistimiou Avenue, Aglantzia, Nicosia 2109, CyprusDepartment of Physics, University of Patras, 26504 Patras, GreeceThe present work reports on the synthesis and characterization of iridium (Ir)-based nanohybrids with variable chemical compositions. More specifically, highly stable polyvinylpyrrolidone (PVP) nanohybrids of the PVP-IrO<sub>2</sub> and PVP-Ir/IrO<sub>2</sub> types, as well as non-coated Ir/IrO<sub>2</sub> nanoparticles, are synthesized using different synthetic protocols and characterized in terms of their chemical composition and morphology via X-ray photoelectron spectroscopy (XPS) and scanning transmission electron microscopy (STEM), respectively. Furthermore, their nonlinear optical (NLO) response and optical limiting (OL) efficiency are studied by means of the Z-scan technique, employing 4 ns laser pulses at 532 and 1064 nm. The results demonstrate that the PVP-Ir/IrO<sub>2</sub> and Ir/IrO<sub>2</sub> systems exhibit exceptional OL performance, while PVP-IrO<sub>2</sub> presents very strong saturable absorption (SA) behavior, indicating that the present Ir-based nanohybrids could be strong competitors to other nanostructured materials for photonic and optoelectronic applications. In addition, the findings denote that the variation in the content of IrO<sub>2</sub> nanoparticles by using different synthetic pathways significantly affects the NLO response of the studied Ir-based nanohybrids, suggesting that the choice of the appropriate synthetic method could lead to tailor-made NLO properties for specific applications in photonics and optoelectronics.https://www.mdpi.com/2079-4991/13/14/2131Ir nanoparticlesIrO<sub>2</sub> nanoparticlescolloidal nanohybridsz-scannonlinear optical response |
| spellingShingle | Nikolaos Chazapis Michalis Stavrou Georgia Papaparaskeva Alexander Bunge Rodica Turcu Theodora Krasia-Christoforou Stelios Couris Iridium-Based Nanohybrids: Synthesis, Characterization, Optical Limiting, and Nonlinear Optical Properties Nanomaterials Ir nanoparticles IrO<sub>2</sub> nanoparticles colloidal nanohybrids z-scan nonlinear optical response |
| title | Iridium-Based Nanohybrids: Synthesis, Characterization, Optical Limiting, and Nonlinear Optical Properties |
| title_full | Iridium-Based Nanohybrids: Synthesis, Characterization, Optical Limiting, and Nonlinear Optical Properties |
| title_fullStr | Iridium-Based Nanohybrids: Synthesis, Characterization, Optical Limiting, and Nonlinear Optical Properties |
| title_full_unstemmed | Iridium-Based Nanohybrids: Synthesis, Characterization, Optical Limiting, and Nonlinear Optical Properties |
| title_short | Iridium-Based Nanohybrids: Synthesis, Characterization, Optical Limiting, and Nonlinear Optical Properties |
| title_sort | iridium based nanohybrids synthesis characterization optical limiting and nonlinear optical properties |
| topic | Ir nanoparticles IrO<sub>2</sub> nanoparticles colloidal nanohybrids z-scan nonlinear optical response |
| url | https://www.mdpi.com/2079-4991/13/14/2131 |
| work_keys_str_mv | AT nikolaoschazapis iridiumbasednanohybridssynthesischaracterizationopticallimitingandnonlinearopticalproperties AT michalisstavrou iridiumbasednanohybridssynthesischaracterizationopticallimitingandnonlinearopticalproperties AT georgiapapaparaskeva iridiumbasednanohybridssynthesischaracterizationopticallimitingandnonlinearopticalproperties AT alexanderbunge iridiumbasednanohybridssynthesischaracterizationopticallimitingandnonlinearopticalproperties AT rodicaturcu iridiumbasednanohybridssynthesischaracterizationopticallimitingandnonlinearopticalproperties AT theodorakrasiachristoforou iridiumbasednanohybridssynthesischaracterizationopticallimitingandnonlinearopticalproperties AT stelioscouris iridiumbasednanohybridssynthesischaracterizationopticallimitingandnonlinearopticalproperties |