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Study of the Phase-Evolution Mechanism of an Fe-Se System at the Nanoscale: Optimization of Synthesis Conditions for the Isolation of Pure Phases and Their Controlled Growth.
Langmuir ( IF 3.7 ) Pub Date : 2020-02-12 , DOI: 10.1021/acs.langmuir.9b03643 Monika Ghalawat 1 , Pankaj Poddar 1
Langmuir ( IF 3.7 ) Pub Date : 2020-02-12 , DOI: 10.1021/acs.langmuir.9b03643 Monika Ghalawat 1 , Pankaj Poddar 1
Affiliation
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The iron selenide (Fe-Se) family of nanoparticles (FexSey-where x/y ranges from 1:2 to 1:1) has been fabricated by a thermal decomposition method. The control over solution chemistry has been developed by intensively investigating the effect of reaction parameters by means of wide-angle X-ray scattering, leading to the rich insights into the phase-evolution mechanism of the Fe-Se system. The phase transformation followed the FeSe2 → Fe3Se4 → Fe7Se8 → FeSe sequence in the temperature range of 110-300 °C. The deep mechanistic insight helped in the identification of optimized conditions needed to crystallize the individual phase of the Fe-Se system as well as control of the morphology, crystalline phase purity, and thermal stability of the obtained Fe-Se nanoparticles.
中文翻译：
纳米级Fe-Se体系的相演化机理研究：分离纯相及其受控生长的合成条件优化。
硒化铁（Fe-Se）纳米粒子家族（FexSey，其中x / y为1：2至1：1）已通过热分解方法制备。通过广角X射线散射对反应参数的影响进行深入研究，已经开发出了对溶液化学的控制，从而使人们对Fe-Se系统的相演化机理有了更深刻的认识。在110-300°C的温度范围内，相转变遵循FeSe2→Fe3Se4→Fe7Se8→FeSe序列。深入的机械研究有助于确定结晶Fe-Se系统各相所需的最佳条件，以及控制所获得的Fe-Se纳米颗粒的形态，结晶相纯度和热稳定性。
更新日期：2020-02-13
中文翻译：
纳米级Fe-Se体系的相演化机理研究：分离纯相及其受控生长的合成条件优化。
硒化铁（Fe-Se）纳米粒子家族（FexSey，其中x / y为1：2至1：1）已通过热分解方法制备。通过广角X射线散射对反应参数的影响进行深入研究，已经开发出了对溶液化学的控制，从而使人们对Fe-Se系统的相演化机理有了更深刻的认识。在110-300°C的温度范围内，相转变遵循FeSe2→Fe3Se4→Fe7Se8→FeSe序列。深入的机械研究有助于确定结晶Fe-Se系统各相所需的最佳条件，以及控制所获得的Fe-Se纳米颗粒的形态，结晶相纯度和热稳定性。
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