Noble Metal and Metal Oxide Nanoparticles and Their Nano-Composites for Catalytic and Biomedical Applications
A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".
Deadline for manuscript submissions: closed (31 March 2021) | Viewed by 6297
Special Issue Editor
Interests: redoxactive nanoparticles; magnetoplasmonic nanoheterostructures; X-ray enhancing nanoagents; X-ray triggered drug release; multimodal nanothernostics
Special Issue Information
Dear Colleagues,
Noble metal and metal oxide nanostructures, especially combined in core−shell, onion-, dumbbell-, flower-like heterodimers, represent highly inspiring nanoplatforms for multiple applications in heterogeneous catalysis, environmental sciences, biology and medicine. Suitable metal oxide nanomaterials are TiO2, Ce2O3, MoO3-x, V2O5, WO3-x, BiOI, MnFe2O4, ZnFe2O4 and Fe3O4 nanoparticles as being redox active. Beyond that, Fe3O4, MnFe2O4, and ZnFe2O4 (ferrite) nanoparticles exhibit superparamagnetism or ferrimagnetism which enable biomedical applications including magnetic separation techniques, magnetic drug targeting, magnetofection and magnetic hyperthermia. On the other hand, plasmonic nanostructures, comprising spherical, core-shell, rod-like and star-shaped gold, platinum and palladium nanoparticles, provide unique interactions with light which enable controllable plasmonic heating (of tumor tissue) and versatile photocatalytic applications. The combination of plasmonic and redox active metal oxide nanostructures enhances the catalytic performance due to interfacial electron transfer and for photocatalysis, due to the expansion of the spectrum for light absorption to the visible and NIR range. In addition, localized surface plasmons enhance magneto-optical responses, such as Faraday, Kerr, Cotton−Mouton and Voigt effects providing powerful probes for the magnetic state of nanocomposites. These magneto-optical phenomena may be exploited to control the polarization and/or intensity of light. Magnetoplasmonic nanocomposites as consisting of ferrite fused with Au-, Pd- or Pt nanoparticles possess novel interfacial electronic and electromagnetic interactions which modify the redox potential and thereupon, may significantly improve the catalytic performance of the nanoheterostructure. The superparamagnetism of the ferrite component facilitates prospective applications in medicine as being magnetic protein separation, magnetic hyperthermia, magnetic drug delivery and others. Moreover, magnetoplasmonic nanocomposites are predestined for operating as contrast agents in MRI and CT. Under X-ray exposure intracellular Au-Fe3O4 nanoheterodimers simultaneously act as Fenton catalyst and Auger/Compton electron emitter, and thus, are auspicious X-ray enhancing agents in low-dose radiation therapy.
This multidisciplinary Special Issue on Noble Metal and Metal Oxide Nanostructures focuses on controllable syntheses of redoxactive noble-metal metal oxide nanoheterostuctures for feasible applications in photocatalysis (H2 and solar energy generation), magneto-optics and opto-magnetism and as theranostics in cancer medicine. Interdisciplinary working scientists are encouraged to submit original research articles and review articles.
Prof. Dr. Carola Kryschi
Guest Editor
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Keywords
- Redox active metal oxide nanoparticles
- Magnetoplasmonic nanoparticles
- Magnetic data storage
- Magneto-optics
- Magneto-optical Kerr and Cotton-Mouton effect
- Magnetically recyclable catalysis
- Nanomedicine
- Magnetic protein separation
- Theranostics nanomaterials
- MRI/CT contrast agents
- Magnetic hyperthermia
- Magnetic drug targeting
- Magnetofection
- X-ray dose enhancing nanomaterial
- X-ray triggered drug release
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