کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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595112 | 1454001 | 2010 | 5 صفحه PDF | دانلود رایگان |
Fe3+-based Co2+–Ni2+–Fe3+ CO32− LDHs materials with well regular shape were hydrothermally synthesized by urea as hydrolysis agent and trisodium citrate (TSC) as a chelating agent at 150 °C. The obtained hexagonal platelets had a mean lateral size of about 800 nm and a thickness of 30 nm. A layered structure transform process due to the symmetric transform of carbonate anions in the interlayer was observed. The as-prepared Co2+–Ni2+–Fe3+ CO32− LDHs material was completely converted to Cl−-LDHs material by treating with a NaCl–HCl mixed solution, retaining its regular shape. LDHs materials intercalated with a variety of anions (such as NO3−, ClO4−, and dodecyl sulfate) were further prepared from Cl−-LDHs material via an anion-exchange process employing corresponding salts.
Research highlights▶ Fe3+-based three-component layer double hydroxides materials with well regular shapes has been synthesized. ▶ The formation of the Co2+–Ni2+–Fe3+ CO32 LDHs material is strongly affected by the complexing agent. ▶ The as-prepared Co2+–Ni2+–Fe3+ CO32− LDHs material has good anion exchange property.
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 371, Issues 1–3, 20 November 2010, Pages 71–75