کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1231924 | 1495223 | 2015 | 4 صفحه PDF | دانلود رایگان |
• We expanded the traditional electrolysis method.
• Electrolysis experiments can be performed below 0 °C for the first time.
• Ammonium alum crystal is colored electrolytically below 0 °C for the first time.
• The crystal is colored electrolytically with a pointed anode for the first time.
• SO2−, O3−, O2− and O− hole-trapped centers are produced in colored crystal.
Ammonium alum crystals are colored electrolytically below 0 °C and under various voltages using a pointed anode and a flat cathode. SO2−, O3−, O2−, O− hole-trapped centers and O0, O2−, H+ radicals are produced in colored ammonium alum crystals. The absorption bands of the SO2− and O3− hole-trapped centers are observed in the absorption spectra of the colored ammonium alum crystals. The hole-trapped centers and radicals come mainly from the electric-field-induced decomposition of the SO42− radicals and crystalline water molecules. Current is measured during electrolytic coloration. Electron exchanges from electrons and small charged radicals to electrodes induce complete current.
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Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 146, 5 July 2015, Pages 273–276