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Synthetic approaches in oxynitride chemistry
Progress in Solid State Chemistry ( IF 9.1 ) Pub Date : 2018-09-01 , DOI: 10.1016/j.progsolidstchem.2017.11.001
Amparo Fuertes

Abstract Mixed anion oxides are emerging materials showing a variety of physical and chemical properties. Among them oxynitrides are widely investigated because of notable photocatalytic, dielectric, luminescent and electronic properties. Nitrides show more positive free energies of formation than oxides because of the higher stability of N 2 molecule with respect to O 2 and the unfavourable electron affinity of nitrogen compared to oxygen. However the stability of oxynitrides is higher than for nitrides, and they easily form from oxides in presence of reactive gases as NH 3 . In addition to ammonolysis several synthetic strategies have been developed in the last years leading to the stabilization of relevant materials with a variety of structures. In this review we will discuss recent progress in the synthesis of oxynitrides emphasizing the importance of kinetic factors and the influence of preparative parameters on the structure types and oxidation states of the cations, and the consequences on physical properties.

中文翻译:

氮氧化物化学中的合成方法

摘要 混合阴离子氧化物是一种具有多种物理和化学性质的新兴材料。其中氮氧化物因其显着的光催化、介电、发光和电子特性而被广泛研究。由于 N 2 分子相对于 O 2 的稳定性更高以及与氧相比氮的不利电子亲合力,氮化物显示出比氧化物更多的正自由能。然而,氮氧化物的稳定性高于氮化物,并且它们在反应性气体 NH 3 存在下很容易由氧化物形成。除了氨解之外,最近几年还开发了几种合成策略,使具有各种结构的相关材料稳定。
更新日期:2018-09-01
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