Synthesis of Yttrium Ferrite Near Infrared Reflective Materials

Yueying Li

Synthesis of Yttrium Ferrite Near Infrared Reflective Materials

Titel in Übersetzung: Synthese von Yttrium Ferrit Nahinfrarot reflektierenden Materialien

Yueying Li

Lehrstuhl für Gesteinshüttenkunde (320)

Publikation: Thesis / Studienabschlussarbeiten und Habilitationsschriften › Masterarbeit

Abstract

Nicht toxisches farbiges Nahinfrarot (NIR) reflektierendes Material ist vielversprechend bei der Verringerung des Energieverbrauchs von Gebäuden. Yttriumferrit hat eine gute Nahinfrarot-Reflexionsleistung und breite Anwendungspotenziale im Bereich solar reflektierender Wärmedämmmaterialien. In dieser Arbeit wurde Yttriumferritpulver durch Niedertemperatur-Festkörperreaktion und Schmelzsalz-Niedertemperatur-Festkörperreaktion synthetisiert. Die Mikrostruktur von Yttriumferrit-Materialien, insbesondere die Verteilung von Ladungszuständen, und der Zusammenhang zwischen Infrarot-Reflexion und Farbigkeit, wurde diskutiert. Die Forschungsergebnisse zeigen, dass:
(1) Yttriumferrit-Nanopulver mit hexagonaler Struktur kann bei 700 ℃ durch Niedertemperatur-Festkörperreaktion synthetisiert werden. Mit zunehmender Kalzinierungstemperatur ändert sich die Pulverstruktur von hexagonal zu orthorhombisch, und die nahe Infrarotreflexion steigt von 18,20% auf 88,65%.
(2) Orthorhombisches Yttrium-Ferrit-Pulver kann durch geschmolzenes Salz-unterstützte Niedertemperatur-Festkörperreaktion bei 700 ℃ synthetisiert werden. Mit zunehmender Kalzinierungstemperatur ändert sich die Partikelmorphologie von scheibenartig zu korallenartig, und die nahe Infrarot-Sonnenreflexion des Pulvers steigt auf 51,70%.

Titel in Übersetzung	Synthese von Yttrium Ferrit Nahinfrarot reflektierenden Materialien
Originalsprache	Englisch
Qualifikation	MSc
Gradverleihende Hochschule	Montanuniversität
Betreuer/-in / Berater/-in	Jin, Shengli, Betreuer (intern) Ma, Yan, Betreuer (extern), Externe Person
Datum der Bewilligung	15 Dez. 2023
Publikationsstatus	Veröffentlicht - 2023

Bibliographische Notiz

nicht gesperrt

UN SDGs

Dieser Output leistet einen Beitrag zu folgendem(n) Ziel(en) für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Schlagwörter

Yttrium Ferrit
Niedertemperatur-Festkörperreaktion
Nahinfrarotes Reflexionsvermögen

Dieses zitieren

@mastersthesis{273a5ce3e4d949a681bd94f93e3a76d1,

title = "Synthesis of Yttrium Ferrite Near Infrared Reflective Materials",

abstract = "Non-toxic colored near infrared (NIR) reflective material is an ideal choice to reduce building energy consumption. Yttrium ferrite has good near infrared reflection performance and has broad application prospects in the field of solar reflective heat insulation materials. Yttrium ferrite powder was synthesized by low-temperature solid-state reaction and molten salt low-temperature solid-state reaction. The microstructure of yttrium ferrite materials, especially the distribution of charge states, and the relationship between its infrared reflectance and chromaticity was discussed. The research results show that: (1) Yttrium ferrite nano-powder with hexagonal structure can be synthesized at 700℃ by low-temperature solid-state reaction. With the increase of calcination temperature, the powder structure changes from hexagonal to orthorhombic, and the near infrared reflectance increases from 18.20\% to 88.65\%. (2) Orthorhombic yttrium ferrite powder can be synthesized by molten salt-assisted low-temperature solid-state reaction at 700℃. With the increase of calcination temperature, the particle morphology changes from disc-like to coral-like, and the near infrared solar reflectance of the powder increases to 51.70\%.",

keywords = "Yttrium Ferrit, Niedertemperatur-Festk{\"o}rperreaktion, Nahinfrarotes Reflexionsverm{\"o}gen, Yttrium ferrite, Low-temperature solid-state reaction, Near infrared reflectivity",

author = "Yueying Li",

note = "no embargo",

year = "2023",

language = "English",

school = "Technical University of Leoben (000)",

}

TY - THES

T1 - Synthesis of Yttrium Ferrite Near Infrared Reflective Materials

AU - Li, Yueying

N1 - no embargo

PY - 2023

Y1 - 2023

N2 - Non-toxic colored near infrared (NIR) reflective material is an ideal choice to reduce building energy consumption. Yttrium ferrite has good near infrared reflection performance and has broad application prospects in the field of solar reflective heat insulation materials. Yttrium ferrite powder was synthesized by low-temperature solid-state reaction and molten salt low-temperature solid-state reaction. The microstructure of yttrium ferrite materials, especially the distribution of charge states, and the relationship between its infrared reflectance and chromaticity was discussed. The research results show that: (1) Yttrium ferrite nano-powder with hexagonal structure can be synthesized at 700℃ by low-temperature solid-state reaction. With the increase of calcination temperature, the powder structure changes from hexagonal to orthorhombic, and the near infrared reflectance increases from 18.20% to 88.65%. (2) Orthorhombic yttrium ferrite powder can be synthesized by molten salt-assisted low-temperature solid-state reaction at 700℃. With the increase of calcination temperature, the particle morphology changes from disc-like to coral-like, and the near infrared solar reflectance of the powder increases to 51.70%.

AB - Non-toxic colored near infrared (NIR) reflective material is an ideal choice to reduce building energy consumption. Yttrium ferrite has good near infrared reflection performance and has broad application prospects in the field of solar reflective heat insulation materials. Yttrium ferrite powder was synthesized by low-temperature solid-state reaction and molten salt low-temperature solid-state reaction. The microstructure of yttrium ferrite materials, especially the distribution of charge states, and the relationship between its infrared reflectance and chromaticity was discussed. The research results show that: (1) Yttrium ferrite nano-powder with hexagonal structure can be synthesized at 700℃ by low-temperature solid-state reaction. With the increase of calcination temperature, the powder structure changes from hexagonal to orthorhombic, and the near infrared reflectance increases from 18.20% to 88.65%. (2) Orthorhombic yttrium ferrite powder can be synthesized by molten salt-assisted low-temperature solid-state reaction at 700℃. With the increase of calcination temperature, the particle morphology changes from disc-like to coral-like, and the near infrared solar reflectance of the powder increases to 51.70%.

KW - Yttrium Ferrit

KW - Niedertemperatur-Festkörperreaktion

KW - Nahinfrarotes Reflexionsvermögen

KW - Yttrium ferrite

KW - Low-temperature solid-state reaction

KW - Near infrared reflectivity

M3 - Master's Thesis

ER -