Synthetic approaches in oxynitride chemistry

IF 9.1 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Progress in Solid State Chemistry Pub Date : 2018-09-01 DOI:10.1016/j.progsolidstchem.2017.11.001

Amparo Fuertes

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引用次数: 32

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 N₂ molecule with respect to O₂ 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 NH₃. 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.

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氮氧化物化学合成方法

混合阴离子氧化物是一种具有多种物理化学性质的新兴材料。其中氮氧化物因其优异的光催化、介电、发光和电子性能而受到广泛的研究。氮化物比氧化物表现出更多的正生成自由能，这是因为N2分子相对于O2具有更高的稳定性，而氮相对于氧具有不利的电子亲和能力。然而，氮氧化物的稳定性比氮化物高，并且它们很容易在反应性气体如NH3的存在下由氧化物形成。除了氨解之外，在过去的几年中还发展了几种合成策略，从而稳定了具有各种结构的相关材料。本文综述了氮氧化物合成的最新进展，重点介绍了动力学因素的重要性、制备参数对阳离子结构类型和氧化态的影响以及对物理性质的影响。

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来源期刊

Progress in Solid State Chemistry 化学-无机化学与核化学

CiteScore

14.10

自引率

3.30%

发文量

期刊介绍： Progress in Solid State Chemistry offers critical reviews and specialized articles written by leading experts in the field, providing a comprehensive view of solid-state chemistry. It addresses the challenge of dispersed literature by offering up-to-date assessments of research progress and recent developments. Emphasis is placed on the relationship between physical properties and structural chemistry, particularly imperfections like vacancies and dislocations. The reviews published in Progress in Solid State Chemistry emphasize critical evaluation of the field, along with indications of current problems and future directions. Papers are not intended to be bibliographic in nature but rather to inform a broad range of readers in an inherently multidisciplinary field by providing expert treatises oriented both towards specialists in different areas of the solid state and towards nonspecialists. The authorship is international, and the subject matter will be of interest to chemists, materials scientists, physicists, metallurgists, crystallographers, ceramists, and engineers interested in the solid state.