✦ LIBER ✦
EPR Investigation of UV-Irradiated Single Crystals of Chromate-Doped Methylammonium and Potassium Aluminum Alums
✍ Scribed by Jiang-Tsu Yu; Ssu-Hao Lou
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 321 KB
- Volume
- 105
- Category
- Article
- ISSN
- 0022-4596
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✦ Synopsis
Electron paramagnetic resonance (EPR) has been used to identify and analyze (\mathrm{arO}{4}^{3-}) species produced by UV irradiation in single crystals of chromate-doped methylammonium aluminum alum and in potassium aluminum alum lightly codoped with the methylammonium ion. The photoreduction is a simple reduction of the type (\mathrm{CrO}{4}^{2-}+e^{-} \rightarrow \mathrm{CrO}_{4}^{3-}), where the odd electron is a photoelectron liberated by the methylammonium ion. 1993 Academic Press. Inc.