کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1490759 992332 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Facile synthesis of air-stable Prussian white microcubes via a hydrothermal method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Facile synthesis of air-stable Prussian white microcubes via a hydrothermal method
چکیده انگلیسی

Air-stable Prussian white (PW) microcubes were fabricated by the slow dissociation of K4[Fe(CN)6] under hydrothermal condition without the protection of inert atmosphere. Mössbauer spectra and Fourier transform infrared (FT-IR) spectrum were used to characterize the composition of PW. X-ray diffraction (XRD) identified the obtained PW was monoclinic, and the purity was high. Scanning electron microscopy (SEM) images indicated the cubes were composed by solid cubes and hollow cubes. The shape of crystals strongly depended on the concentration of K4[Fe(CN)6], the hydrothermal temperature as well as the reaction duration. The lower concentration and lower temperature resulted in perfect cubic crystals, while the higher concentration or the higher temperature resulted in irregular cubic crystals. After exposing in air for 2 months, no oxidation of PW occurred. To explain the formation of the PW microcubes, a layer-by-layer growth mechanism was put forward based on the low dissociation rate of K4[Fe(CN)6]. The partially solubility of PW in water caused the formation of hollow cubes.

Figure optionsDownload as PowerPoint slideResearch highlights
► We have synthesized Prussian white microcubes in large quantities by a facile hydrothermal method for the first time.
► It is the first report about air-stable PW.
► The shape of crystals strongly depended on the concentration of K4[Fe(CN)6], the hydrothermal temperature and the reaction duration.
► A layer-by-layer growth mechanism was proposed to explain the formation of PW microcubes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 46, Issue 5, May 2011, Pages 702–707
نویسندگان
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