For the first time, dielectric properties and electromagnetic wave (EMW) absorbing performance of a precursor for N-doped TiO2 nanoparticles undergoing combustion synthesis are reported. The precursor contains titania, NH4Cl as source of N atoms for TiO2 nanoparticles doping, and organics. Thermogravimetric analysis (TGA) reveals that the 180-450 degrees C temperature range accounts for the overall weight loss of the process. High -temperature gas evolution analysis confirms combustion of the organic component. Aiming to optimize output power and time schedule of the material's microwave (MW) calcination, in situ high temperature dielectric properties measurements were recorded during MW irradiation in a dedicated cavity. Results revealed that after a first stage of non-combustive decomposition, in a second stage the EMW absorption decreases, so MW power is no longer necessary and hybrid heating is suggested to reach the desired calcination temperature (375-400 degrees C).

On the use of microwaves during combustion/calcination of N-doped TiO2 precursor: An EMW absorption study combined with TGA-DSC-FTIR results / Paradisi, Enrico; Plaza-González, Pedro J.; Baldi, Giovanni; Catalá-Civera, José M.; Leonelli, Cristina. - In: MATERIALS LETTERS. - ISSN 0167-577X. - 338:(2023), pp. N/A-N/A. [10.1016/j.matlet.2023.133975]

On the use of microwaves during combustion/calcination of N-doped TiO2 precursor: An EMW absorption study combined with TGA-DSC-FTIR results

Paradisi, Enrico;Baldi, Giovanni;Leonelli, Cristina
2023

Abstract

For the first time, dielectric properties and electromagnetic wave (EMW) absorbing performance of a precursor for N-doped TiO2 nanoparticles undergoing combustion synthesis are reported. The precursor contains titania, NH4Cl as source of N atoms for TiO2 nanoparticles doping, and organics. Thermogravimetric analysis (TGA) reveals that the 180-450 degrees C temperature range accounts for the overall weight loss of the process. High -temperature gas evolution analysis confirms combustion of the organic component. Aiming to optimize output power and time schedule of the material's microwave (MW) calcination, in situ high temperature dielectric properties measurements were recorded during MW irradiation in a dedicated cavity. Results revealed that after a first stage of non-combustive decomposition, in a second stage the EMW absorption decreases, so MW power is no longer necessary and hybrid heating is suggested to reach the desired calcination temperature (375-400 degrees C).
2023
338
N/A
N/A
On the use of microwaves during combustion/calcination of N-doped TiO2 precursor: An EMW absorption study combined with TGA-DSC-FTIR results / Paradisi, Enrico; Plaza-González, Pedro J.; Baldi, Giovanni; Catalá-Civera, José M.; Leonelli, Cristina. - In: MATERIALS LETTERS. - ISSN 0167-577X. - 338:(2023), pp. N/A-N/A. [10.1016/j.matlet.2023.133975]
Paradisi, Enrico; Plaza-González, Pedro J.; Baldi, Giovanni; Catalá-Civera, José M.; Leonelli, Cristina
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S0167577X2300160X-main.pdf

Open access

Tipologia: Versione pubblicata dall'editore
Dimensione 3.44 MB
Formato Adobe PDF
3.44 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1337309
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
social impact