Metallic and metal oxides nano-objects for TES

Short description

Synthesis and structural assessment of metallic and metal oxides nano-objects for TES

IFN has developed oxide nanoparticles (ZnO and SnO2) fabrication protocols based on thermal decomposition of polymeric mixed-metal precursor gels and combustion methods. These nanofillers for molten salts can find application in TES. IFN has specific competences in basic and acid catalyzed synthesis of nanoparticles as a function of the colloids that have to be developed. Monosize silica particles of predictable size and shape, activated with a controllable concentration of rare earth (RE) ions like Er3+ or Eu3+ have been synthesized via base-catalyzed hydrolysis of TEOS. IFN has developed fabrication protocols of metallic nanoparticles, such as gold and silver, using reduction methods. Finally, bottom up and top down approaches have been developed to control the growth of different kinds of glass ceramics.

Nanoparticles, Phase changing materials, luminescence, glass-ceramics

Main technical features

The researchers have developed several original diagnostic techniques for the assessment of physical-chemical properties of produced materials.

Preparation and physical-chemical characterizations can be achieved using the following facilities:

1. Clean room class 1000 dedicated to the fabrication of photonic structures by sol gel-route.

2. Spin coater and dip coater with thermal treatment facility for sol-gel processing.

3. Cutting, grinding, lapping and polishing machines for manual or automatic preparation of materialographic specimens.

4. Novascan PSD Pro Series Ditigal UV Ozone System Cleaner.

5. Excitation sources: Ring dye laser and Ti: Zaffire laser pumped by an Ar laser; Laser Diode at 1480 nm, 980 nm and 800 nm, Dye laser pumped by a Nd-YAG Laser, 405 nm diode laser, 638.5 nm pigtailed laser diode, fibered diode laser at 980,1478 and 1550 nm.  Monochromator Horiba Scientific model MicroHR, Interchangeable dual grating turret (1200gr/mm blaze 330nm, 600 gr/mm blaze 750nm), 140 mm f/3.9 Czerny-Turner. Excitation source: Xenon lamp Ozon Free 450W spectral range 250-2500nm.

6. M-line apparatus for prism coupling measurements with prism with refractive index up to 3.00-3.38 (effective index range @1310 and 1550 nm) and laser at 633 nm 543.5 nm, 1319 nm and 1542 nm for refractive index and attenuation coefficient measurements.

7. micro-Raman spectrometer equipped with He-Ne 632.8 nm and DPSS 532 nm lasers, CCD detection. - Labram Aramis Jobin Yvon Horiba microRaman system.

8. UV-VIS-NIR double beam spectrophotometer for absorption and transmission measurements from 200 to 3200 nm equipped with integrating sphere (from 200 to 1800 nm) and variable angle (VASRA: 20-70 degree) reflectance measurements setup - Varian Cary 5000.

9. XRD X’Pert Pro Panalytical diffractometer equipped with liquid nitrogen cryostat and oven (max T=450°C)

10. Access to SEM equipped with EDX analysis

Innovative aspects

Low-cost synthesis methods, control of size and shape of nanoparticles, controlled growth of nanocrystals in glasses for photonics applications

Applications

Thermal energy storage

Glass Photonics

Image gallery

Type of partner sought

Research organizations

Tasks to be performed by the partner you are looking for.

Thermal analysis: determination of thermophysical properties of nanoparticles and nanofluids.

Thermal analysis on different glasses for the optimization of the thermal treatment for the controlled growth of nanocrystals in glass-ceramics for photonics applications.

Contact person details
Details
Showcase ID
JP.STE.3902:Metallic and metal oxides nano-objects for TES
Joint Programme / IRP / ECRIA
IRP STAGE-STE
Development stage
N/A
IPR / IPR Status
Other (not applicable)
Exploitation status
N/C
Technology keyword(s)
Phase change materials,Thermal energy storage