Synthesis of Praseodymium-Doped GeO2 Aerogels by Impregnation
A simple method for the preparation of doped GeO2 aerogels is proposed. At the first stage, a gel with a composition of (NH4)3H(Ge7O16)(H2O)x was obtained by dissolving germanium dioxide in aqueous ammonia with pH 8.2. The dopant ions were introduced by impregnating the hydrogels with a dimethyl sulfoxide (DMSO) solution of praseodymium nitrate. The optimum conditions of the synthesis were determined, which allow uniform distribution of the dopant ion in the matrix. The Pr/Ge ratio in the resulting aerogels was 0.1. The aerogel samples were characterized in detail by IR, inductively coupled plasma-atomic emission spectroscopy (ICP-AES), low-temperature nitrogen adsorption, etc. It was found that praseodymium affects the luminescence characteristics of GeO2 aerogels during excitation radiation with a wavelength of 240, 255, and 390 nm.
Authors
- O. M. Gajtko (ORCID: https://orcid.org/0000-0001-6424-1282)
- Sergey Yu. Kottsov (ORCID: https://orcid.org/0000-0001-8263-889X)
- Varvara O. Veselova (ORCID: https://orcid.org/0000-0002-8548-7959)
- С. В. Голодухина (ORCID: https://orcid.org/0000-0001-9317-1340)
- Daria A. Khvoshchevskaya (ORCID: https://orcid.org/0009-0005-2668-8733)
- A. G. Son (ORCID: https://orcid.org/0009-0006-7107-5714)
Institutions
- NS Kurnakova Institute of General and Inorganic Chemistry (RU)
Publication Details
- Journal
- Russian Journal of Physical Chemistry B
- Published
- 2024-12-01
- DOI
- https://doi.org/10.1134/s1990793124701343
- Primary Topic
- Aerogels and thermal insulation
- Type
- article
- Field-Weighted Citation Impact
- 0.00